二进制安装Kubernetes（k8s） v1.23.7 IPv4/IPv6双栈

2.2.k8s与etcd下载及安装（仅在master01操作）

2.2.1解压k8s安装包

解压k8s安装文件
tar -xf kubernetes-server-linux-amd64.tar.gz  --strip-components=3 -C /usr/local/bin kubernetes/server/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy}

解压etcd安装文件
tar -xf etcd-v3.5.4-linux-amd64.tar.gz --strip-components=1 -C /usr/local/bin etcd-v3.5.4-linux-amd64/etcd{,ctl}

# 查看/usr/local/bin下内容

ls /usr/local/bin/
etcd  etcdctl  kube-apiserver  kube-controller-manager  kubectl  kubelet  kube-proxy  kube-scheduler

2.2.2查看版本

[root@k8s-master01 ~]#  kubelet --version
Kubernetes v1.23.7
[root@k8s-master01 ~]# etcdctl version
etcdctl version: 3.5.4
API version: 3.5
[root@k8s-master01 ~]# 

2.2.3将组件发送至其他k8s节点

Master=\'k8s-master02 k8s-master03\'
Work=\'k8s-node01 k8s-node02\'

for NODE in $Master; do echo $NODE; scp /usr/local/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy} $NODE:/usr/local/bin/; scp /usr/local/bin/etcd* $NODE:/usr/local/bin/; done

for NODE in $Work; do     scp /usr/local/bin/kube{let,-proxy} $NODE:/usr/local/bin/ ; done

2.3创建证书相关文件

mkdir pki
cd pki
cat > admin-csr.json << EOF 
{
  \"CN\": \"admin\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"system:masters\",
      \"OU\": \"Kubernetes-manual\"
    }
  ]
}
EOF

cat > ca-config.json << EOF 
{
  \"signing\": {
    \"default\": {
      \"expiry\": \"876000h\"
    },
    \"profiles\": {
      \"kubernetes\": {
        \"usages\": [
            \"signing\",
            \"key encipherment\",
            \"server auth\",
            \"client auth\"
        ],
        \"expiry\": \"876000h\"
      }
    }
  }
}
EOF

cat > etcd-ca-csr.json  << EOF 
{
  \"CN\": \"etcd\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"etcd\",
      \"OU\": \"Etcd Security\"
    }
  ],
  \"ca\": {
    \"expiry\": \"876000h\"
  }
}
EOF

cat > front-proxy-ca-csr.json  << EOF 
{
  \"CN\": \"kubernetes\",
  \"key\": {
     \"algo\": \"rsa\",
     \"size\": 2048
  },
  \"ca\": {
    \"expiry\": \"876000h\"
  }
}
EOF

cat > kubelet-csr.json  << EOF 
{
  \"CN\": \"system:node:\\$NODE\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"L\": \"Beijing\",
      \"ST\": \"Beijing\",
      \"O\": \"system:nodes\",
      \"OU\": \"Kubernetes-manual\"
    }
  ]
}
EOF

cat > manager-csr.json << EOF 
{
  \"CN\": \"system:kube-controller-manager\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"system:kube-controller-manager\",
      \"OU\": \"Kubernetes-manual\"
    }
  ]
}
EOF

cat > apiserver-csr.json << EOF 
{
  \"CN\": \"kube-apiserver\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"Kubernetes\",
      \"OU\": \"Kubernetes-manual\"
    }
  ]
}
EOF


cat > ca-csr.json   << EOF 
{
  \"CN\": \"kubernetes\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"Kubernetes\",
      \"OU\": \"Kubernetes-manual\"
    }
  ],
  \"ca\": {
    \"expiry\": \"876000h\"
  }
}
EOF

cat > etcd-csr.json << EOF 
{
  \"CN\": \"etcd\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"etcd\",
      \"OU\": \"Etcd Security\"
    }
  ]
}
EOF


cat > front-proxy-client-csr.json  << EOF 
{
  \"CN\": \"front-proxy-client\",
  \"key\": {
     \"algo\": \"rsa\",
     \"size\": 2048
  }
}
EOF


cat > kube-proxy-csr.json  << EOF 
{
  \"CN\": \"system:kube-proxy\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"system:kube-proxy\",
      \"OU\": \"Kubernetes-manual\"
    }
  ]
}
EOF


cat > scheduler-csr.json << EOF 
{
  \"CN\": \"system:kube-scheduler\",
  \"key\": {
    \"algo\": \"rsa\",
    \"size\": 2048
  },
  \"names\": [
    {
      \"C\": \"CN\",
      \"ST\": \"Beijing\",
      \"L\": \"Beijing\",
      \"O\": \"system:kube-scheduler\",
      \"OU\": \"Kubernetes-manual\"
    }
  ]
}
EOF

cd ..
mkdir bootstrap
cd bootstrap
cat > bootstrap.secret.yaml << EOF 
apiVersion: v1
kind: Secret
metadata:
  name: bootstrap-token-c8ad9c
  namespace: kube-system
type: bootstrap.kubernetes.io/token
stringData:
  description: \"The default bootstrap token generated by \'kubelet \'.\"
  token-id: c8ad9c
  token-secret: 2e4d610cf3e7426e
  usage-bootstrap-authentication: \"true\"
  usage-bootstrap-signing: \"true\"
  auth-extra-groups:  system:bootstrappers:default-node-token,system:bootstrappers:worker,system:bootstrappers:ingress
 
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubelet-bootstrap
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:node-bootstrapper
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: node-autoapprove-bootstrap
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:certificates.k8s.io:certificatesigningrequests:nodeclient
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: node-autoapprove-certificate-rotation
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:certificates.k8s.io:certificatesigningrequests:selfnodeclient
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:nodes
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: \"true\"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:kube-apiserver-to-kubelet
rules:
  - apiGroups:
      - \"\"
    resources:
      - nodes/proxy
      - nodes/stats
      - nodes/log
      - nodes/spec
      - nodes/metrics
    verbs:
      - \"*\"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: system:kube-apiserver
  namespace: \"\"
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:kube-apiserver-to-kubelet
subjects:
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: kube-apiserver
EOF


cd ..
mkdir coredns
cd coredns
cat > coredns.yaml << EOF 
apiVersion: v1
kind: ServiceAccount
metadata:
  name: coredns
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:coredns
rules:
  - apiGroups:
    - \"\"
    resources:
    - endpoints
    - services
    - pods
    - namespaces
    verbs:
    - list
    - watch
  - apiGroups:
    - discovery.k8s.io
    resources:
    - endpointslices
    verbs:
    - list
    - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: \"true\"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:coredns
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:coredns
subjects:
- kind: ServiceAccount
  name: coredns
  namespace: kube-system
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns
  namespace: kube-system
data:
  Corefile: |
    .:53 {
        errors
        health {
          lameduck 5s
        }
        ready
        kubernetes cluster.local in-addr.arpa ip6.arpa {
          fallthrough in-addr.arpa ip6.arpa
        }
        prometheus :9153
        forward . /etc/resolv.conf {
          max_concurrent 1000
        }
        cache 30
        loop
        reload
        loadbalance
    }
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: coredns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
    kubernetes.io/name: \"CoreDNS\"
spec:
  # replicas: not specified here:
  # 1. Default is 1.
  # 2. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  selector:
    matchLabels:
      k8s-app: kube-dns
  template:
    metadata:
      labels:
        k8s-app: kube-dns
    spec:
      priorityClassName: system-cluster-critical
      serviceAccountName: coredns
      tolerations:
        - key: \"CriticalAddonsOnly\"
          operator: \"Exists\"
      nodeSelector:
        kubernetes.io/os: linux
      affinity:
         podAntiAffinity:
           preferredDuringSchedulingIgnoredDuringExecution:
           - weight: 100
             podAffinityTerm:
               labelSelector:
                 matchExpressions:
                   - key: k8s-app
                     operator: In
                     values: [\"kube-dns\"]
               topologyKey: kubernetes.io/hostname
      containers:
      - name: coredns
        image: registry.cn-beijing.aliyuncs.com/dotbalo/coredns:1.8.6 
        imagePullPolicy: IfNotPresent
        resources:
          limits:
            memory: 170Mi
          requests:
            cpu: 100m
            memory: 70Mi
        args: [ \"-conf\", \"/etc/coredns/Corefile\" ]
        volumeMounts:
        - name: config-volume
          mountPath: /etc/coredns
          readOnly: true
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        - containerPort: 9153
          name: metrics
          protocol: TCP
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            add:
            - NET_BIND_SERVICE
            drop:
            - all
          readOnlyRootFilesystem: true
        livenessProbe:
          httpGet:
            path: /health
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        readinessProbe:
          httpGet:
            path: /ready
            port: 8181
            scheme: HTTP
      dnsPolicy: Default
      volumes:
        - name: config-volume
          configMap:
            name: coredns
            items:
            - key: Corefile
              path: Corefile
---
apiVersion: v1
kind: Service
metadata:
  name: kube-dns
  namespace: kube-system
  annotations:
    prometheus.io/port: \"9153\"
    prometheus.io/scrape: \"true\"
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: \"true\"
    kubernetes.io/name: \"CoreDNS\"
spec:
  selector:
    k8s-app: kube-dns
  clusterIP: 10.96.0.10 
  ports:
  - name: dns
    port: 53
    protocol: UDP
  - name: dns-tcp
    port: 53
    protocol: TCP
  - name: metrics
    port: 9153
    protocol: TCP
EOF


cd ..
mkdir metrics-server
cd metrics-server
cat > metrics-server.yaml << EOF 
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-app: metrics-server
    rbac.authorization.k8s.io/aggregate-to-admin: \"true\"
    rbac.authorization.k8s.io/aggregate-to-edit: \"true\"
    rbac.authorization.k8s.io/aggregate-to-view: \"true\"
  name: system:aggregated-metrics-reader
rules:
- apiGroups:
  - metrics.k8s.io
  resources:
  - pods
  - nodes
  verbs:
  - get
  - list
  - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-app: metrics-server
  name: system:metrics-server
rules:
- apiGroups:
  - \"\"
  resources:
  - pods
  - nodes
  - nodes/stats
  - namespaces
  - configmaps
  verbs:
  - get
  - list
  - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server-auth-reader
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server:system:auth-delegator
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:auth-delegator
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: system:metrics-server
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:metrics-server
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  ports:
  - name: https
    port: 443
    protocol: TCP
    targetPort: https
  selector:
    k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  selector:
    matchLabels:
      k8s-app: metrics-server
  strategy:
    rollingUpdate:
      maxUnavailable: 0
  template:
    metadata:
      labels:
        k8s-app: metrics-server
    spec:
      containers:
      - args:
        - --cert-dir=/tmp
        - --secure-port=4443
        - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
        - --kubelet-use-node-status-port
        - --metric-resolution=15s
        - --kubelet-insecure-tls
        - --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem # change to front-proxy-ca.crt for kubeadm
        - --requestheader-username-headers=X-Remote-User
        - --requestheader-group-headers=X-Remote-Group
        - --requestheader-extra-headers-prefix=X-Remote-Extra-
        image: registry.cn-beijing.aliyuncs.com/dotbalo/metrics-server:0.5.0
        imagePullPolicy: IfNotPresent
        livenessProbe:
          failureThreshold: 3
          httpGet:
            path: /livez
            port: https
            scheme: HTTPS
          periodSeconds: 10
        name: metrics-server
        ports:
        - containerPort: 4443
          name: https
          protocol: TCP
        readinessProbe:
          failureThreshold: 3
          httpGet:
            path: /readyz
            port: https
            scheme: HTTPS
          initialDelaySeconds: 20
          periodSeconds: 10
        resources:
          requests:
            cpu: 100m
            memory: 200Mi
        securityContext:
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1000
        volumeMounts:
        - mountPath: /tmp
          name: tmp-dir
        - name: ca-ssl
          mountPath: /etc/kubernetes/pki
      nodeSelector:
        kubernetes.io/os: linux
      priorityClassName: system-cluster-critical
      serviceAccountName: metrics-server
      volumes:
      - emptyDir: {}
        name: tmp-dir
      - name: ca-ssl
        hostPath:
          path: /etc/kubernetes/pki

---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
  labels:
    k8s-app: metrics-server
  name: v1beta1.metrics.k8s.io
spec:
  group: metrics.k8s.io
  groupPriorityMinimum: 100
  insecureSkipTLSVerify: true
  service:
    name: metrics-server
    namespace: kube-system
  version: v1beta1
  versionPriority: 100
EOF

3.相关证书生成

master01节点下载证书生成工具
wget \"https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl_1.6.1_linux_amd64\" -O /usr/local/bin/cfssl
wget \"https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssljson_1.6.1_linux_amd64\" -O /usr/local/bin/cfssljson
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson

3.1.生成etcd证书

特别说明除外，以下操作在所有master节点操作

3.1.1所有master节点创建证书存放目录

mkdir /etc/etcd/ssl -p

3.1.2master01节点生成etcd证书

cd Kubernetes/pki/

# 生成etcd证书和etcd证书的key（如果你觉得以后可能会扩容，可以在ip那多写几个预留出来）

cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca

cfssl gencert \\
   -ca=/etc/etcd/ssl/etcd-ca.pem \\
   -ca-key=/etc/etcd/ssl/etcd-ca-key.pem \\
   -config=ca-config.json \\
   -hostname=127.0.0.1,k8s-master01,k8s-master02,k8s-master03,10.0.0.81,10.0.0.82,10.0.0.83 \\
   -profile=kubernetes \\
   etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd

3.1.3将证书复制到其他节点

Master=\'k8s-master02 k8s-master03\'

for NODE in $Master; do ssh $NODE \"mkdir -p /etc/etcd/ssl\"; for FILE in etcd-ca-key.pem  etcd-ca.pem  etcd-key.pem  etcd.pem; do scp /etc/etcd/ssl/${FILE} $NODE:/etc/etcd/ssl/${FILE}; done; done

3.2.生成k8s相关证书

特别说明除外，以下操作在所有master节点操作

3.2.1所有k8s节点创建证书存放目录

mkdir -p /etc/kubernetes/pki

3.2.2master01节点生成k8s证书

# 生成一个根证书

cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca

# 10.96.0.1是service网段的第一个地址，需要计算，10.0.0.89为高可用vip地址

cfssl gencert   \\
-ca=/etc/kubernetes/pki/ca.pem   \\
-ca-key=/etc/kubernetes/pki/ca-key.pem   \\
-config=ca-config.json   \\
-hostname=10.96.0.1,10.0.0.89,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,x.oiox.cn,k.oiox.cn,l.oiox.cn,o.oiox.cn,10.0.0.81,10.0.0.82,10.0.0.83,10.0.0.84,10.0.0.85,10.0.0.86,10.0.0.87,10.0.0.88,10.0.0.89,192.168.1.90,192.168.1.40,192.168.1.41   \\
-profile=kubernetes   apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver

3.2.3生成apiserver聚合证书

cfssl gencert   -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca 

# 有一个警告，可以忽略

cfssl gencert  \\
-ca=/etc/kubernetes/pki/front-proxy-ca.pem   \\
-ca-key=/etc/kubernetes/pki/front-proxy-ca-key.pem   \\
-config=ca-config.json   \\
-profile=kubernetes   front-proxy-client-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-client

3.2.4生成controller-manage的证书

cfssl gencert \\
   -ca=/etc/kubernetes/pki/ca.pem \\
   -ca-key=/etc/kubernetes/pki/ca-key.pem \\
   -config=ca-config.json \\
   -profile=kubernetes \\
   manager-csr.json | cfssljson -bare /etc/kubernetes/pki/controller-manager

# 设置一个集群项

kubectl config set-cluster kubernetes \\
     --certificate-authority=/etc/kubernetes/pki/ca.pem \\
     --embed-certs=true \\
     --server=https://10.0.0.89:8443 \\
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

# 设置一个环境项，一个上下文

kubectl config set-context system:kube-controller-manager@kubernetes \\
    --cluster=kubernetes \\
    --user=system:kube-controller-manager \\
    --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

# 设置一个用户项

kubectl config set-credentials system:kube-controller-manager \\
     --client-certificate=/etc/kubernetes/pki/controller-manager.pem \\
     --client-key=/etc/kubernetes/pki/controller-manager-key.pem \\
     --embed-certs=true \\
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

# 设置默认环境

kubectl config use-context system:kube-controller-manager@kubernetes \\
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

cfssl gencert \\
   -ca=/etc/kubernetes/pki/ca.pem \\
   -ca-key=/etc/kubernetes/pki/ca-key.pem \\
   -config=ca-config.json \\
   -profile=kubernetes \\
   scheduler-csr.json | cfssljson -bare /etc/kubernetes/pki/scheduler

kubectl config set-cluster kubernetes \\
     --certificate-authority=/etc/kubernetes/pki/ca.pem \\
     --embed-certs=true \\
     --server=https://10.0.0.89:8443 \\
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config set-credentials system:kube-scheduler \\
     --client-certificate=/etc/kubernetes/pki/scheduler.pem \\
     --client-key=/etc/kubernetes/pki/scheduler-key.pem \\
     --embed-certs=true \\
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config set-context system:kube-scheduler@kubernetes \\
     --cluster=kubernetes \\
     --user=system:kube-scheduler \\
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config use-context system:kube-scheduler@kubernetes \\
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

cfssl gencert \\
   -ca=/etc/kubernetes/pki/ca.pem \\
   -ca-key=/etc/kubernetes/pki/ca-key.pem \\
   -config=ca-config.json \\
   -profile=kubernetes \\
   admin-csr.json | cfssljson -bare /etc/kubernetes/pki/admin

kubectl config set-cluster kubernetes     \\
  --certificate-authority=/etc/kubernetes/pki/ca.pem     \\
  --embed-certs=true     \\
  --server=https://10.0.0.89:8443     \\
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config set-credentials kubernetes-admin  \\
  --client-certificate=/etc/kubernetes/pki/admin.pem     \\
  --client-key=/etc/kubernetes/pki/admin-key.pem     \\
  --embed-certs=true     \\
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config set-context kubernetes-admin@kubernetes    \\
  --cluster=kubernetes     \\
  --user=kubernetes-admin     \\
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config use-context kubernetes-admin@kubernetes  --kubeconfig=/etc/kubernetes/admin.kubeconfig

3.2.5创建ServiceAccount Key ——secret

openssl genrsa -out /etc/kubernetes/pki/sa.key 2048
openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub

3.2.6将证书发送到其他master节点

for NODE in k8s-master02 k8s-master03; do  for FILE in $(ls /etc/kubernetes/pki | grep -v etcd); do  scp /etc/kubernetes/pki/${FILE} $NODE:/etc/kubernetes/pki/${FILE}; done;  for FILE in admin.kubeconfig controller-manager.kubeconfig scheduler.kubeconfig; do  scp /etc/kubernetes/${FILE} $NODE:/etc/kubernetes/${FILE}; done; done

3.2.7查看证书

ls /etc/kubernetes/pki/
admin.csr      apiserver-key.pem  ca.pem                      front-proxy-ca.csr      front-proxy-client-key.pem  scheduler.csr
admin-key.pem  apiserver.pem      controller-manager.csr      front-proxy-ca-key.pem  front-proxy-client.pem      scheduler-key.pem
admin.pem      ca.csr             controller-manager-key.pem  front-proxy-ca.pem      sa.key                      scheduler.pem
apiserver.csr  ca-key.pem         controller-manager.pem      front-proxy-client.csr  sa.pub

# 一共23个就对了

ls /etc/kubernetes/pki/ |wc -l
23

4.k8s系统组件配置

4.1.etcd配置

4.1.1master01配置

cat > /etc/etcd/etcd.config.yml << EOF 
name: \'k8s-master01\'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: \'https://10.0.0.81:2380\'
listen-client-urls: \'https://10.0.0.81:2379,http://127.0.0.1:2379\'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: \'https://10.0.0.81:2380\'
advertise-client-urls: \'https://10.0.0.81:2379\'
discovery:
discovery-fallback: \'proxy\'
discovery-proxy:
discovery-srv:
initial-cluster: \'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380\'
initial-cluster-token: \'etcd-k8s-cluster\'
initial-cluster-state: \'new\'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: \'off\'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: \'/etc/kubernetes/pki/etcd/etcd.pem\'
  key-file: \'/etc/kubernetes/pki/etcd/etcd-key.pem\'
  client-cert-auth: true
  trusted-ca-file: \'/etc/kubernetes/pki/etcd/etcd-ca.pem\'
  auto-tls: true
peer-transport-security:
  cert-file: \'/etc/kubernetes/pki/etcd/etcd.pem\'
  key-file: \'/etc/kubernetes/pki/etcd/etcd-key.pem\'
  peer-client-cert-auth: true
  trusted-ca-file: \'/etc/kubernetes/pki/etcd/etcd-ca.pem\'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

4.1.2master02配置

cat > /etc/etcd/etcd.config.yml << EOF 
name: \'k8s-master02\'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: \'https://10.0.0.82:2380\'
listen-client-urls: \'https://10.0.0.82:2379,http://127.0.0.1:2379\'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: \'https://10.0.0.82:2380\'
advertise-client-urls: \'https://10.0.0.82:2379\'
discovery:
discovery-fallback: \'proxy\'
discovery-proxy:
discovery-srv:
initial-cluster: \'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380\'
initial-cluster-token: \'etcd-k8s-cluster\'
initial-cluster-state: \'new\'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: \'off\'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: \'/etc/kubernetes/pki/etcd/etcd.pem\'
  key-file: \'/etc/kubernetes/pki/etcd/etcd-key.pem\'
  client-cert-auth: true
  trusted-ca-file: \'/etc/kubernetes/pki/etcd/etcd-ca.pem\'
  auto-tls: true
peer-transport-security:
  cert-file: \'/etc/kubernetes/pki/etcd/etcd.pem\'
  key-file: \'/etc/kubernetes/pki/etcd/etcd-key.pem\'
  peer-client-cert-auth: true
  trusted-ca-file: \'/etc/kubernetes/pki/etcd/etcd-ca.pem\'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

4.1.3master03配置

cat > /etc/etcd/etcd.config.yml << EOF 
name: \'k8s-master03\'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: \'https://10.0.0.83:2380\'
listen-client-urls: \'https://10.0.0.83:2379,http://127.0.0.1:2379\'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: \'https://10.0.0.83:2380\'
advertise-client-urls: \'https://10.0.0.83:2379\'
discovery:
discovery-fallback: \'proxy\'
discovery-proxy:
discovery-srv:
initial-cluster: \'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380\'
initial-cluster-token: \'etcd-k8s-cluster\'
initial-cluster-state: \'new\'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: \'off\'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: \'/etc/kubernetes/pki/etcd/etcd.pem\'
  key-file: \'/etc/kubernetes/pki/etcd/etcd-key.pem\'
  client-cert-auth: true
  trusted-ca-file: \'/etc/kubernetes/pki/etcd/etcd-ca.pem\'
  auto-tls: true
peer-transport-security:
  cert-file: \'/etc/kubernetes/pki/etcd/etcd.pem\'
  key-file: \'/etc/kubernetes/pki/etcd/etcd-key.pem\'
  peer-client-cert-auth: true
  trusted-ca-file: \'/etc/kubernetes/pki/etcd/etcd-ca.pem\'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

4.2.创建service（所有master节点操作）

4.2.1创建etcd.service并启动

cat > /usr/lib/systemd/system/etcd.service << EOF

[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target

[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
Alias=etcd3.service

EOF

4.2.2创建etcd证书目录

mkdir /etc/kubernetes/pki/etcd
ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/
systemctl daemon-reload
systemctl enable --now etcd

4.2.3查看etcd状态

export ETCDCTL_API=3
etcdctl --endpoints=\"10.0.0.83:2379,10.0.0.82:2379,10.0.0.81:2379\" --cacert=/etc/kubernetes/pki/etcd/etcd-ca.pem --cert=/etc/kubernetes/pki/etcd/etcd.pem --key=/etc/kubernetes/pki/etcd/etcd-key.pem  endpoint status --write-out=table
+-------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
|     ENDPOINT      |        ID        | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+-------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| 10.0.0.83:2379 | 7cb7be3df5c81965 |   3.5.2 |   20 kB |     false |      false |         2 |          9 |                  9 |        |
| 10.0.0.82:2379 | c077939949ab3f8b |   3.5.2 |   20 kB |     false |      false |         2 |          9 |                  9 |        |
| 10.0.0.81:2379 | 2ee388f67565dac9 |   3.5.2 |   20 kB |      true |      false |         2 |          9 |                  9 |        |
+-------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
[root@k8s-master01 pki]# 

5.高可用配置

5.1在master01和master02和master03服务器上操作

5.1.1安装keepalived和haproxy服务

yum -y install keepalived haproxy

5.1.2修改haproxy配置文件（配置文件一样）

# cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak

cat >/etc/haproxy/haproxy.cfg<<\"EOF\"
global
 maxconn 2000
 ulimit-n 16384
 log 127.0.0.1 local0 err
 stats timeout 30s

defaults
 log global
 mode http
 option httplog
 timeout connect 5000
 timeout client 50000
 timeout server 50000
 timeout http-request 15s
 timeout http-keep-alive 15s


frontend monitor-in
 bind *:33305
 mode http
 option httplog
 monitor-uri /monitor

frontend k8s-master
 bind 0.0.0.0:8443
 bind 127.0.0.1:8443
 mode tcp
 option tcplog
 tcp-request inspect-delay 5s
 default_backend k8s-master


backend k8s-master
 mode tcp
 option tcplog
 option tcp-check
 balance roundrobin
 default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
 server  k8s-master01  10.0.0.81:6443 check
 server  k8s-master02  10.0.0.82:6443 check
 server  k8s-master03  10.0.0.83:6443 check
EOF

5.1.3配置keepalived master节点

#cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script \"/etc/keepalived/check_apiserver.sh\"
    interval 5 
    weight -5
    fall 2
    rise 1
}
vrrp_instance VI_1 {
    state MASTER
    interface ens160
    mcast_src_ip 10.0.0.81
    virtual_router_id 51
    priority 100
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        10.0.0.89
    }
    track_script {
      chk_apiserver 
} }

EOF

5.1.4lb02配置keepalived backup节点

# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script \"/etc/keepalived/check_apiserver.sh\"
    interval 5 
    weight -5
    fall 2
    rise 1

}
vrrp_instance VI_1 {
    state BACKUP
    interface ens160
    mcast_src_ip 192.168.1.82
    virtual_router_id 51
    priority 50
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        10.0.0.89
    }
    track_script {
      chk_apiserver 
} }

EOF

5.1.5配置keepalived backup节点

# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script \"/etc/keepalived/check_apiserver.sh\"
    interval 5 
    weight -5
    fall 2
    rise 1

}
vrrp_instance VI_1 {
    state BACKUP
    interface ens160
    mcast_src_ip 192.168.1.83
    virtual_router_id 51
    priority 30
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        10.0.0.89
    }
    track_script {
      chk_apiserver 
} }

EOF

5.1.5健康检查脚本配置

cat >  /etc/keepalived/check_apiserver.sh << EOF
#!/bin/bash

err=0
for k in \\$(seq 1 3)
do
    check_code=\\$(pgrep haproxy)
    if [[ \\$check_code == \"\" ]]; then
        err=\\$(expr \\$err + 1)
        sleep 1
        continue
    else
        err=0
        break
    fi
done

if [[ \\$err != \"0\" ]]; then
    echo \"systemctl stop keepalived\"
    /usr/bin/systemctl stop keepalived
    exit 1
else
    exit 0
fi
EOF

# 给脚本授权

chmod +x /etc/keepalived/check_apiserver.sh

5.1.6启动服务

systemctl daemon-reload
systemctl enable --now haproxy
systemctl enable --now keepalived

5.1.7测试高可用

# 能ping同

[root@k8s-node02 ~]# ping 10.0.0.89

# 能telnet访问

[root@k8s-node02 ~]# telnet 10.0.0.89 8443

# 关闭主节点，看vip是否漂移到备节点

6.k8s组件配置（区别于第4点）

所有k8s节点创建以下目录

mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes

6.1.创建apiserver（所有master节点）

6.1.1master01节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
      --v=2  \\
      --logtostderr=true  \\
      --allow-privileged=true  \\
      --bind-address=0.0.0.0  \\
      --secure-port=6443  \\
      --insecure-port=0  \\
      --advertise-address=10.0.0.81 \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  \\
      --feature-gates=IPv6DualStack=true \\
      --service-node-port-range=30000-32767  \\
      --etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 \\
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \\
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \\
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \\
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \\
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \\
      --authorization-mode=Node,RBAC  \\
      --enable-bootstrap-token-auth=true  \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\
      --requestheader-allowed-names=aggregator  \\
      --requestheader-group-headers=X-Remote-Group  \\
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \\
      --requestheader-username-headers=X-Remote-User \\
      --enable-aggregator-routing=true
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

EOF

6.1.2master02节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
      --v=2  \\
      --logtostderr=true  \\
      --allow-privileged=true  \\
      --bind-address=0.0.0.0  \\
      --secure-port=6443  \\
      --insecure-port=0  \\
      --advertise-address=10.0.0.82 \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  \\
      --feature-gates=IPv6DualStack=true \\
      --service-node-port-range=30000-32767  \\
      --etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 \\
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \\
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \\
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \\
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \\
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \\
      --authorization-mode=Node,RBAC  \\
      --enable-bootstrap-token-auth=true  \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\
      --requestheader-allowed-names=aggregator  \\
      --requestheader-group-headers=X-Remote-Group  \\
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \\
      --requestheader-username-headers=X-Remote-User \\
      --enable-aggregator-routing=true
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

EOF

6.1.3master03节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service  << EOF

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
      --v=2  \\
      --logtostderr=true  \\
      --allow-privileged=true  \\
      --bind-address=0.0.0.0  \\
      --secure-port=6443  \\
      --insecure-port=0  \\
      --advertise-address=10.0.0.83 \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  \\
      --feature-gates=IPv6DualStack=true \\
      --service-node-port-range=30000-32767  \\
      --etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 \\
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \\
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \\
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \\
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \\
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \\
      --authorization-mode=Node,RBAC  \\
      --enable-bootstrap-token-auth=true  \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\
      --requestheader-allowed-names=aggregator  \\
      --requestheader-group-headers=X-Remote-Group  \\
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \\
      --requestheader-username-headers=X-Remote-User \\
      --enable-aggregator-routing=true
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

EOF

6.1.4启动apiserver（所有master节点）

systemctl daemon-reload && systemctl enable --now kube-apiserver

# 注意查看状态是否启动正常

systemctl status kube-apiserver

6.2.配置kube-controller-manager service

所有master节点配置，且配置相同
172.16.0.0/12为pod网段，按需求设置你自己的网段

cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF

[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-controller-manager \\
      --v=2 \\
      --logtostderr=true \\
      --address=127.0.0.1 \\
      --root-ca-file=/etc/kubernetes/pki/ca.pem \\
      --cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem \\
      --cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem \\
      --service-account-private-key-file=/etc/kubernetes/pki/sa.key \\
      --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig \\
      --leader-elect=true \\
      --use-service-account-credentials=true \\
      --node-monitor-grace-period=40s \\
      --node-monitor-period=5s \\
      --pod-eviction-timeout=2m0s \\
      --controllers=*,bootstrapsigner,tokencleaner \\
      --allocate-node-cidrs=true \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108 \\
      --cluster-cidr=172.16.0.0/12,fc00::/48 \\
      --node-cidr-mask-size-ipv4=24 \\
      --node-cidr-mask-size-ipv6=64 \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \\
      --feature-gates=IPv6DualStack=true

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

6.2.1启动kube-controller-manager，并查看状态

systemctl daemon-reload
systemctl enable --now kube-controller-manager
systemctl  status kube-controller-manager

6.3.配置kube-scheduler service

6.3.1所有master节点配置，且配置相同

cat > /usr/lib/systemd/system/kube-scheduler.service << EOF

[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-scheduler \\
      --v=2 \\
      --logtostderr=true \\
      --address=127.0.0.1 \\
      --leader-elect=true \\
      --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

6.3.2启动并查看服务状态

systemctl daemon-reload
systemctl enable --now kube-scheduler
systemctl status kube-scheduler

7.TLS Bootstrapping配置

7.1在master01上配置

cd /root/Kubernetes/bootstrap

kubectl config set-cluster kubernetes     \\
--certificate-authority=/etc/kubernetes/pki/ca.pem     \\
--embed-certs=true     --server=https://10.0.0.89:8443     \\
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config set-credentials tls-bootstrap-token-user     \\
--token=c8ad9c.2e4d610cf3e7426e \\
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config set-context tls-bootstrap-token-user@kubernetes     \\
--cluster=kubernetes     \\
--user=tls-bootstrap-token-user     \\
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config use-context tls-bootstrap-token-user@kubernetes     \\
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

# token的位置在bootstrap.secret.yaml，如果修改的话到这个文件修改

mkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config

7.2查看集群状态，没问题的话继续后续操作

kubectl get cs

Warning: v1 ComponentStatus is deprecated in v1.19+
NAME                 STATUS    MESSAGE                         ERROR
scheduler            Healthy   ok                              
controller-manager   Healthy   ok                              
etcd-0               Healthy   {\"health\":\"true\",\"reason\":\"\"}   
etcd-2               Healthy   {\"health\":\"true\",\"reason\":\"\"}   
etcd-1               Healthy   {\"health\":\"true\",\"reason\":\"\"} 

kubectl create -f bootstrap.secret.yaml

8.node节点配置

8.1.在master01上将证书复制到node节点

cd /etc/kubernetes/
 
for NODE in k8s-master02 k8s-master03 k8s-node01 k8s-node02; do ssh $NODE mkdir -p /etc/kubernetes/pki; for FILE in pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig; do scp /etc/kubernetes/$FILE $NODE:/etc/kubernetes/${FILE}; done; done

8.2.kubelet配置

8.2.1所有k8s节点创建相关目录

mkdir -p /var/lib/kubelet /var/log/kubernetes /etc/systemd/system/kubelet.service.d /etc/kubernetes/manifests/



所有k8s节点配置kubelet service
cat > /usr/lib/systemd/system/kubelet.service << EOF

[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=containerd.service
Requires=containerd.service

[Service]
ExecStart=/usr/local/bin/kubelet \\
    --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig  \\
    --kubeconfig=/etc/kubernetes/kubelet.kubeconfig \\
    --config=/etc/kubernetes/kubelet-conf.yml \\
    --network-plugin=cni  \\
    --cni-conf-dir=/etc/cni/net.d  \\
    --cni-bin-dir=/opt/cni/bin  \\
    --container-runtime=remote  \\
    --runtime-request-timeout=15m  \\
    --container-runtime-endpoint=unix:///run/containerd/containerd.sock  \\
    --cgroup-driver=systemd \\
    --node-labels=node.kubernetes.io/node= \\
    --feature-gates=IPv6DualStack=true

Restart=always
StartLimitInterval=0
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF

注意若是CentOS7，将 --node-labels=node.kubernetes.io/node=\'\' 替换为 --node-labels=node.kubernetes.io/node=
将 \'\' 删除

8.2.2所有k8s节点创建kubelet的配置文件

cat > /etc/kubernetes/kubelet-conf.yml <

systemctl daemon-reload
systemctl restart kubelet
systemctl enable --now kubelet

[root@k8s-master01 ~]# kubectl  get node
NAME           STATUS   ROLES    AGE     VERSION
k8s-master01   Ready       2m33s   v1.23.7
k8s-master02   Ready       2m26s   v1.23.7
k8s-master03   Ready       2m27s   v1.23.7
k8s-node01     Ready       21s     v1.23.7
k8s-node02     Ready       21s     v1.23.7
[root@k8s-master01 ~]#

cd /root/Kubernetes/
kubectl -n kube-system create serviceaccount kube-proxy

kubectl create clusterrolebinding system:kube-proxy \\
--clusterrole system:node-proxier \\
--serviceaccount kube-system:kube-proxy

SECRET=$(kubectl -n kube-system get sa/kube-proxy \\
    --output=jsonpath=\'{.secrets[0].name}\')

JWT_TOKEN=$(kubectl -n kube-system get secret/$SECRET \\
--output=jsonpath=\'{.data.token}\' | base64 -d)

PKI_DIR=/etc/kubernetes/pki
K8S_DIR=/etc/kubernetes

kubectl config set-cluster kubernetes \\
--certificate-authority=/etc/kubernetes/pki/ca.pem \\
--embed-certs=true \\
--server=https://10.0.0.89:8443 \\
--kubeconfig=${K8S_DIR}/kube-proxy.kubeconfig

kubectl config set-credentials kubernetes \\
--token=${JWT_TOKEN} \\
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

kubectl config set-context kubernetes \\
--cluster=kubernetes \\
--user=kubernetes \\
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

kubectl config use-context kubernetes \\
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

for NODE in k8s-master02 k8s-master03; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig; done

for NODE in k8s-node01 k8s-node02; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig;  done

cat >  /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-proxy \\
  --config=/etc/kubernetes/kube-proxy.yaml \\
  --v=2

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

cat > /etc/kubernetes/kube-proxy.yaml << EOF
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:
  acceptContentTypes: \"\"
  burst: 10
  contentType: application/vnd.kubernetes.protobuf
  kubeconfig: /etc/kubernetes/kube-proxy.kubeconfig
  qps: 5
clusterCIDR: 172.16.0.0/12,fc00::/48 
configSyncPeriod: 15m0s
conntrack:
  max: null
  maxPerCore: 32768
  min: 131072
  tcpCloseWaitTimeout: 1h0m0s
  tcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: \"\"
iptables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 0s
  syncPeriod: 30s
ipvs:
  masqueradeAll: true
  minSyncPeriod: 5s
  scheduler: \"rr\"
  syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: \"ipvs\"
nodePortAddresses: null
oomScoreAdj: -999
portRange: \"\"
udpIdleTimeout: 250ms

EOF

 systemctl daemon-reload
 systemctl enable --now kube-proxy

# vim calico.yaml
vim calico-ipv6.yaml
# calico-config ConfigMap处
    \"ipam\": {
        \"type\": \"calico-ipam\",
        \"assign_ipv4\": \"true\",
        \"assign_ipv6\": \"true\"
    },
    - name: IP
      value: \"autodetect\"

    - name: IP6
      value: \"autodetect\"

    - name: CALICO_IPV4POOL_CIDR
      value: \"172.16.0.0/16\"

    - name: CALICO_IPV6POOL_CIDR
      value: \"fc00::/48\"

    - name: FELIX_IPV6SUPPORT
      value: \"true\"

# kubectl apply -f calico.yaml
kubectl apply -f calico-ipv6.yaml

[root@k8s-master01 ~]# kubectl  get pod -A
kube-system   calico-kube-controllers-6f6595874c-2j9l8   1/1     Running   0          67s
kube-system   calico-node-k8rb4                          1/1     Running   0          67s
kube-system   calico-node-lkcls                          1/1     Running   0          67s
kube-system   calico-node-mr8rl                          1/1     Running   0          67s
kube-system   calico-node-q84pm                          1/1     Running   0          67s
kube-system   calico-node-v7dwl                          1/1     Running   0          67s
kube-system   calico-typha-6b6cf8cbdf-cb2wl              1/1     Running   0          67s
[root@k8s-master01 ~]# 

cd CoreDNS/
sed -i \"s#KUBEDNS_SERVICE_IP#10.96.0.10#g\" coredns.yaml

cat coredns.yaml | grep clusterIP:
  clusterIP: 10.96.0.10 

kubectl  create -f coredns.yaml 
serviceaccount/coredns created
clusterrole.rbac.authorization.k8s.io/system:coredns created
clusterrolebinding.rbac.authorization.k8s.io/system:coredns created
configmap/coredns created
deployment.apps/coredns created
service/kube-dns created

安装metrics server
cd metrics-server/

kubectl  create -f . 

serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created

kubectl  top node
NAME           CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   
k8s-master01   154m         1%     1715Mi          21%       
k8s-master02   151m         1%     1274Mi          16%       
k8s-master03   523m         6%     1345Mi          17%       
k8s-node01     84m          1%     671Mi           8%        
k8s-node02     73m          0%     727Mi           9%        

cat<

kubectl get svc
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1            443/TCP   17h


kubectl exec  busybox -n default -- nslookup kubernetes
3Server:    10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local

Name:      kubernetes
Address 1: 10.96.0.1 kubernetes.default.svc.cluster.local

kubectl exec  busybox -n default -- nslookup kube-dns.kube-system
Server:    10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local

Name:      kube-dns.kube-system
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local

telnet 10.96.0.1 443
Trying 10.96.0.1...
Connected to 10.96.0.1.
Escape character is \'^]\'.

 telnet 10.96.0.10 53
Trying 10.96.0.10...
Connected to 10.96.0.10.
Escape character is \'^]\'.

curl 10.96.0.10:53
curl: (52) Empty reply from server

kubectl get po -owide
NAME      READY   STATUS    RESTARTS   AGE   IP              NODE         NOMINATED NODE   READINESS GATES
busybox   1/1     Running   0          17m   172.27.14.193   k8s-node02              

 kubectl get po -n kube-system -owide
NAME                                       READY   STATUS    RESTARTS      AGE   IP               NODE           NOMINATED NODE   READINESS GATES
calico-kube-controllers-5dffd5886b-4blh6   1/1     Running   0             77m   172.25.244.193   k8s-master01              
calico-node-fvbdq                          1/1     Running   1 (75m ago)   77m   10.0.0.81     k8s-master01              
calico-node-g8nqd                          1/1     Running   0             77m   10.0.0.84     k8s-node01                
calico-node-mdps8                          1/1     Running   0             77m   10.0.0.85     k8s-node02                
calico-node-nf4nt                          1/1     Running   0             77m   10.0.0.83     k8s-master03              
calico-node-sq2ml                          1/1     Running   0             77m   10.0.0.82     k8s-master02              
calico-typha-8445487f56-mg6p8              1/1     Running   0             77m   10.0.0.85     k8s-node02                
calico-typha-8445487f56-pxbpj              1/1     Running   0             77m   10.0.0.81     k8s-master01              
calico-typha-8445487f56-tnssl              1/1     Running   0             77m   10.0.0.84     k8s-node01                
coredns-5db5696c7-67h79                    1/1     Running   0             63m   172.25.92.65     k8s-master02              
metrics-server-6bf7dcd649-5fhrw            1/1     Running   0             61m   172.18.195.1     k8s-master03              

# 进入busybox ping其他节点上的pod

kubectl exec -ti busybox -- sh
/ # ping 10.0.0.84
PING 10.0.0.84 (10.0.0.84): 56 data bytes
64 bytes from 10.0.0.84: seq=0 ttl=63 time=0.358 ms
64 bytes from 10.0.0.84: seq=1 ttl=63 time=0.668 ms
64 bytes from 10.0.0.84: seq=2 ttl=63 time=0.637 ms
64 bytes from 10.0.0.84: seq=3 ttl=63 time=0.624 ms
64 bytes from 10.0.0.84: seq=4 ttl=63 time=0.907 ms

# 可以连通证明这个pod是可以跨命名空间和跨主机通信的

cat > deployments.yaml << EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

EOF


kubectl  apply -f deployments.yaml 
deployment.apps/nginx-deployment created

kubectl  get pod 
NAME                               READY   STATUS    RESTARTS   AGE
busybox                            1/1     Running   0          6m25s
nginx-deployment-9456bbbf9-4bmvk   1/1     Running   0          8s
nginx-deployment-9456bbbf9-9rcdk   1/1     Running   0          8s
nginx-deployment-9456bbbf9-dqv8s   1/1     Running   0          8s

# 删除nginx

[root@k8s-master01 ~]# kubectl delete -f deployments.yaml 

cd dashboard/

kubectl  create -f .
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created

cat > admin.yaml << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user

  namespace: kube-system
---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding 
metadata: 
  name: admin-user
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: \"true\"
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:

- kind: ServiceAccount
  name: admin-user
  namespace: kube-system

EOF

kubectl apply -f admin.yaml -n kube-system

serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created

kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
  type: NodePort

kubectl get svc kubernetes-dashboard -n kubernetes-dashboard
NAME                   TYPE       CLUSTER-IP     EXTERNAL-IP   PORT(S)         AGE
kubernetes-dashboard   NodePort   10.98.201.22           443:31245/TCP   10m

kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk \'{print $1}\')
NAME                   TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)         AGE
kubernetes-dashboard   NodePort   10.107.222.221           443:31824/TCP   30s
[root@k8s-master01 dashboard]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk \'{print $1}\')
Name:         admin-user-token-qfmf6
Namespace:    kube-system
Labels:       
Annotations:  kubernetes.io/service-account.name: admin-user
              kubernetes.io/service-account.uid: 944c5bf6-059a-4e5e-8b18-462956dd0466

Type:  kubernetes.io/service-account-token

Data
====
namespace:  11 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IjZ3RFhuV1U5dmgwbmJESEdHYjR2SUNHeWFjdzMwWnRUb2pYZXNGNUlrb2cifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLXFmbWY2Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiI5NDRjNWJmNi0wNTlhLTRlNWUtOGIxOC00NjI5NTZkZDA0NjYiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.I7QJPtETU3FuIqQEMyq7T0yC7wsr7-mQSlcxr4qBl3JKqODOdp2t3wBgpE76rb8eHtFb7PdJa5-hmsyDPbtOwXoji2RKkt_ODBX0hpc-cS8OC4VFgTTnQVNTObLn1nP2sPTlAMJHkN5gza1W-lJanpXDwm-pzxUfVyoBn0a_AWwCc7AamhFrkSGHwEyoOFiN7-UuLAfWnjJtiiWWhugQbduzhvO78QGCWHGwewpSZ74qzfZgQftchXhJa_284_L9LhIFyh8qin5eoRZUi0ALz3wHsGD0L8hMXWqqSnHPswO3SkBRUMtt9CNCqDpH9WeNMNyut7m5MAg5I0nWMhggJQ
ca.crt:     1363 bytes

[root@hello ~/yaml]# vim deploy.yaml
[root@hello ~/yaml]#
[root@hello ~/yaml]#
[root@hello ~/yaml]# cat deploy.yaml
apiVersion: v1
kind: Namespace
metadata:
  name: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx


---
# Source: ingress-nginx/templates/controller-serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx
  namespace: ingress-nginx
automountServiceAccountToken: true
---
# Source: ingress-nginx/templates/controller-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx-controller
  namespace: ingress-nginx
data:
  allow-snippet-annotations: \'true\'
---
# Source: ingress-nginx/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
  name: ingress-nginx
rules:
  - apiGroups:
      - \'\'
    resources:
      - configmaps
      - endpoints
      - nodes
      - pods
      - secrets
      - namespaces
    verbs:
      - list
      - watch
  - apiGroups:
      - \'\'
    resources:
      - nodes
    verbs:
      - get
  - apiGroups:
      - \'\'
    resources:
      - services
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - networking.k8s.io
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - \'\'
    resources:
      - events
    verbs:
      - create
      - patch
  - apiGroups:
      - networking.k8s.io
    resources:
      - ingresses/status
    verbs:
      - update
  - apiGroups:
      - networking.k8s.io
    resources:
      - ingressclasses
    verbs:
      - get
      - list
      - watch
---
# Source: ingress-nginx/templates/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
  name: ingress-nginx
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: ingress-nginx
subjects:
  - kind: ServiceAccount
    name: ingress-nginx
    namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx
  namespace: ingress-nginx
rules:
  - apiGroups:
      - \'\'
    resources:
      - namespaces
    verbs:
      - get
  - apiGroups:
      - \'\'
    resources:
      - configmaps
      - pods
      - secrets
      - endpoints
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - \'\'
    resources:
      - services
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - networking.k8s.io
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - networking.k8s.io
    resources:
      - ingresses/status
    verbs:
      - update
  - apiGroups:
      - networking.k8s.io
    resources:
      - ingressclasses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - \'\'
    resources:
      - configmaps
    resourceNames:
      - ingress-controller-leader
    verbs:
      - get
      - update
  - apiGroups:
      - \'\'
    resources:
      - configmaps
    verbs:
      - create
  - apiGroups:
      - \'\'
    resources:
      - events
    verbs:
      - create
      - patch
---
# Source: ingress-nginx/templates/controller-rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx
  namespace: ingress-nginx
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: ingress-nginx
subjects:
  - kind: ServiceAccount
    name: ingress-nginx
    namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-service-webhook.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx-controller-admission
  namespace: ingress-nginx
spec:
  type: ClusterIP
  ports:
    - name: https-webhook
      port: 443
      targetPort: webhook
      appProtocol: https
  selector:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-service.yaml
apiVersion: v1
kind: Service
metadata:
  annotations:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx-controller
  namespace: ingress-nginx
spec:
  type: NodePort
  externalTrafficPolicy: Local
  ipFamilyPolicy: SingleStack
  ipFamilies:
    - IPv4
  ports:
    - name: http
      port: 80
      protocol: TCP
      targetPort: http
      appProtocol: http
    - name: https
      port: 443
      protocol: TCP
      targetPort: https
      appProtocol: https
  selector:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx-controller
  namespace: ingress-nginx
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: ingress-nginx
      app.kubernetes.io/instance: ingress-nginx
      app.kubernetes.io/component: controller
  revisionHistoryLimit: 10
  minReadySeconds: 0
  template:
    metadata:
      labels:
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/instance: ingress-nginx
        app.kubernetes.io/component: controller
    spec:
      dnsPolicy: ClusterFirst
      containers:
        - name: controller
          image: registry.cn-hangzhou.aliyuncs.com/chenby/controller:v1.1.3 
          imagePullPolicy: IfNotPresent
          lifecycle:
            preStop:
              exec:
                command:
                  - /wait-shutdown
          args:
            - /nginx-ingress-controller
            - --election-id=ingress-controller-leader
            - --controller-class=k8s.io/ingress-nginx
            - --configmap=$(POD_NAMESPACE)/ingress-nginx-controller
            - --validating-webhook=:8443
            - --validating-webhook-certificate=/usr/local/certificates/cert
            - --validating-webhook-key=/usr/local/certificates/key
          securityContext:
            capabilities:
              drop:
                - ALL
              add:
                - NET_BIND_SERVICE
            runAsUser: 101
            allowPrivilegeEscalation: true
          env:
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
            - name: LD_PRELOAD
              value: /usr/local/lib/libmimalloc.so
          livenessProbe:
            failureThreshold: 5
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            initialDelaySeconds: 10
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 1
          readinessProbe:
            failureThreshold: 3
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            initialDelaySeconds: 10
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 1
          ports:
            - name: http
              containerPort: 80
              protocol: TCP
            - name: https
              containerPort: 443
              protocol: TCP
            - name: webhook
              containerPort: 8443
              protocol: TCP
          volumeMounts:
            - name: webhook-cert
              mountPath: /usr/local/certificates/
              readOnly: true
          resources:
            requests:
              cpu: 100m
              memory: 90Mi
      nodeSelector:
        kubernetes.io/os: linux
      serviceAccountName: ingress-nginx
      terminationGracePeriodSeconds: 300
      volumes:
        - name: webhook-cert
          secret:
            secretName: ingress-nginx-admission
---
# Source: ingress-nginx/templates/controller-ingressclass.yaml
# We don\'t support namespaced ingressClass yet
# So a ClusterRole and a ClusterRoleBinding is required
apiVersion: networking.k8s.io/v1
kind: IngressClass
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: nginx
  namespace: ingress-nginx
spec:
  controller: k8s.io/ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
# before changing this value, check the required kubernetes version
# https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#prerequisites
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  name: ingress-nginx-admission
webhooks:
  - name: validate.nginx.ingress.kubernetes.io
    matchPolicy: Equivalent
    rules:
      - apiGroups:
          - networking.k8s.io
        apiVersions:
          - v1
        operations:
          - CREATE
          - UPDATE
        resources:
          - ingresses
    failurePolicy: Fail
    sideEffects: None
    admissionReviewVersions:
      - v1
    clientConfig:
      service:
        namespace: ingress-nginx
        name: ingress-nginx-controller-admission
        path: /networking/v1/ingresses
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: ingress-nginx-admission
  namespace: ingress-nginx
  annotations:
    helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: ingress-nginx-admission
  annotations:
    helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
rules:
  - apiGroups:
      - admissionregistration.k8s.io
    resources:
      - validatingwebhookconfigurations
    verbs:
      - get
      - update
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: ingress-nginx-admission
  annotations:
    helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: ingress-nginx-admission
subjects:
  - kind: ServiceAccount
    name: ingress-nginx-admission
    namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: ingress-nginx-admission
  namespace: ingress-nginx
  annotations:
    helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
rules:
  - apiGroups:
      - \'\'
    resources:
      - secrets
    verbs:
      - get
      - create
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: ingress-nginx-admission
  namespace: ingress-nginx
  annotations:
    helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: ingress-nginx-admission
subjects:
  - kind: ServiceAccount
    name: ingress-nginx-admission
    namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-createSecret.yaml
apiVersion: batch/v1
kind: Job
metadata:
  name: ingress-nginx-admission-create
  namespace: ingress-nginx
  annotations:
    helm.sh/hook: pre-install,pre-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
spec:
  template:
    metadata:
      name: ingress-nginx-admission-create
      labels:
        helm.sh/chart: ingress-nginx-4.0.10
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/instance: ingress-nginx
        app.kubernetes.io/version: 1.1.0
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/component: admission-webhook
    spec:
      containers:
        - name: create
          image: registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1 
          imagePullPolicy: IfNotPresent
          args:
            - create
            - --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.$(POD_NAMESPACE).svc
            - --namespace=$(POD_NAMESPACE)
            - --secret-name=ingress-nginx-admission
          env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          securityContext:
            allowPrivilegeEscalation: false
      restartPolicy: OnFailure
      serviceAccountName: ingress-nginx-admission
      nodeSelector:
        kubernetes.io/os: linux
      securityContext:
        runAsNonRoot: true
        runAsUser: 2000
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-patchWebhook.yaml
apiVersion: batch/v1
kind: Job
metadata:
  name: ingress-nginx-admission-patch
  namespace: ingress-nginx
  annotations:
    helm.sh/hook: post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-4.0.10
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 1.1.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
spec:
  template:
    metadata:
      name: ingress-nginx-admission-patch
      labels:
        helm.sh/chart: ingress-nginx-4.0.10
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/instance: ingress-nginx
        app.kubernetes.io/version: 1.1.0
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/component: admission-webhook
    spec:
      containers:
        - name: patch
          image: registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1 
          imagePullPolicy: IfNotPresent
          args:
            - patch
            - --webhook-name=ingress-nginx-admission
            - --namespace=$(POD_NAMESPACE)
            - --patch-mutating=false
            - --secret-name=ingress-nginx-admission
            - --patch-failure-policy=Fail
          env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          securityContext:
            allowPrivilegeEscalation: false
      restartPolicy: OnFailure
      serviceAccountName: ingress-nginx-admission
      nodeSelector:
        kubernetes.io/os: linux
      securityContext:
        runAsNonRoot: true
        runAsUser: 2000
[root@hello ~/yaml]#

[root@hello ~/yaml]# vim backend.yaml
[root@hello ~/yaml]# cat backend.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: default-http-backend
  labels:
    app.kubernetes.io/name: default-http-backend
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: default-http-backend
  template:
    metadata:
      labels:
        app.kubernetes.io/name: default-http-backend
    spec:
      terminationGracePeriodSeconds: 60
      containers:
      - name: default-http-backend
        image: registry.cn-hangzhou.aliyuncs.com/chenby/defaultbackend-amd64:1.5 
        livenessProbe:
          httpGet:
            path: /healthz
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 30
          timeoutSeconds: 5
        ports:
        - containerPort: 8080
        resources:
          limits:
            cpu: 10m
            memory: 20Mi
          requests:
            cpu: 10m
            memory: 20Mi
---
apiVersion: v1
kind: Service
metadata:
  name: default-http-backend
  namespace: kube-system
  labels:
    app.kubernetes.io/name: default-http-backend
spec:
  ports:
  - port: 80
    targetPort: 8080
  selector:
    app.kubernetes.io/name: default-http-backend
[root@hello ~/yaml]#

[root@hello ~/yaml]# vim ingress-demo-app.yaml
[root@hello ~/yaml]#
[root@hello ~/yaml]# cat ingress-demo-app.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-server
spec:
  replicas: 2
  selector:
    matchLabels:
      app: hello-server
  template:
    metadata:
      labels:
        app: hello-server
    spec:
      containers:
      - name: hello-server
        image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/hello-server
        ports:
        - containerPort: 9000
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: nginx-demo
  name: nginx-demo
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx-demo
  template:
    metadata:
      labels:
        app: nginx-demo
    spec:
      containers:
      - image: nginx
        name: nginx
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: nginx-demo
  name: nginx-demo
spec:
  selector:
    app: nginx-demo
  ports:
  - port: 8000
    protocol: TCP
    targetPort: 80
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: hello-server
  name: hello-server
spec:
  selector:
    app: hello-server
  ports:
  - port: 8000
    protocol: TCP
    targetPort: 9000
---
apiVersion: networking.k8s.io/v1
kind: Ingress  
metadata:
  name: ingress-host-bar
spec:
  ingressClassName: nginx
  rules:
  - host: \"hello.chenby.cn\"
    http:
      paths:
      - pathType: Prefix
        path: \"/\"
        backend:
          service:
            name: hello-server
            port:
              number: 8000
  - host: \"demo.chenby.cn\"
    http:
      paths:
      - pathType: Prefix
        path: \"/nginx\"  
        backend:
          service:
            name: nginx-demo
            port:
              number: 8000
[root@hello ~/yaml]#
[root@hello ~/yaml]# kubectl  get ingress
NAME               CLASS    HOSTS                            ADDRESS        PORTS   AGE
ingress-demo-app      app.demo.com                     10.0.0.81   80      20m
ingress-host-bar   nginx    hello.chenby.cn,demo.chenby.cn   10.0.0.81   80      2m17s
[root@hello ~/yaml]#

root@hello:~# kubectl  apply -f deploy.yaml 
namespace/ingress-nginx created
serviceaccount/ingress-nginx created
configmap/ingress-nginx-controller created
clusterrole.rbac.authorization.k8s.io/ingress-nginx created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx created
role.rbac.authorization.k8s.io/ingress-nginx created
rolebinding.rbac.authorization.k8s.io/ingress-nginx created
service/ingress-nginx-controller-admission created
service/ingress-nginx-controller created
deployment.apps/ingress-nginx-controller created
ingressclass.networking.k8s.io/nginx created
validatingwebhookconfiguration.admissionregistration.k8s.io/ingress-nginx-admission created
serviceaccount/ingress-nginx-admission created
clusterrole.rbac.authorization.k8s.io/ingress-nginx-admission created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
role.rbac.authorization.k8s.io/ingress-nginx-admission created
rolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
job.batch/ingress-nginx-admission-create created
job.batch/ingress-nginx-admission-patch created
root@hello:~# 

root@hello:~# kubectl  apply -f backend.yaml 
deployment.apps/default-http-backend created
service/default-http-backend created
root@hello:~# 

root@hello:~# kubectl  apply -f ingress-demo-app.yaml 
deployment.apps/hello-server created
deployment.apps/nginx-demo created
service/nginx-demo created
service/hello-server created
ingress.networking.k8s.io/ingress-host-bar created
root@hello:~# 

[root@hello ~/yaml]# kubectl  get svc -A | grep ingress
default         ingress-demo-app                     ClusterIP   10.68.231.41            80/TCP                       51m
ingress-nginx   ingress-nginx-controller             NodePort    10.68.93.71             80:32746/TCP,443:30538/TCP   32m
ingress-nginx   ingress-nginx-controller-admission   ClusterIP   10.68.146.23            443/TCP                      32m
[root@hello ~/yaml]#

yum install bash-completion -y
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo \"source <(kubectl completion bash)\" >> ~/.bashrc