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使用kubeadm部署kubernetes1.15.0叢集環境資訊安裝docker編輯kubeadm初始化yaml配置檔案編輯flannel 網絡插件yml配置檔案執行master節點初始化執行worker節點初始化worker節點加入叢集最終狀态

文章目錄

  • 環境資訊
  • 安裝docker
  • 編輯kubeadm初始化yaml配置檔案
  • 編輯flannel 網絡插件yml配置檔案
  • 執行master節點初始化
  • 執行worker節點初始化
    • worker節點先pull需要的鏡像
    • worker節點初始化
  • worker節點加入叢集
  • 最終狀态

環境資訊

  • 用vmware workstation裝2台centos作為節點伺服器
hostname ip os role
node1 192.168.6.128 CentOS Linux release 7.6.1810 (Core) master
node2 192.168.6.129 CentOS Linux release 7.6.1810 (Core) worker
  • kubernetes: 1.15.0
  • docker: 18.09.8
    • 用docker最新的19版本總出問題，而且19版本不在kubernetes1.15支援清單中，是以換回18版本

安裝docker

  • node1和node2執行
  • 一鍵執行腳本 
# bash docker-install.sh 18.09.8-3.el7
           
#! /usr/bin/env bash 
# leo 20190812
# docker YUM一鍵安裝
# 安裝最新版 		./docker-install.sh 
# 安裝指定舊版本 	./docker-install.sh 18.09.8-3.el7

echo "安裝關聯工具..."
yum install -y yum-utils device-mapper-persistent-data lvm2

echo "添加阿裡yum源..."
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

echo "開啟舊版本倉庫"
yum-config-manager --enable docker-ce-edge

echo "更新緩存..."
yum makecache fast

if [ $# -eq 1 ]
then
  echo "安裝docker-ce-$1"
  yum -y install docker-ce-$1
else 
  echo "安裝最新版docker-ce"
  yum -y install docker-ce
fi 

echo "開機啟動..."
systemctl enable docker

echo "鏡像加速..."
mkdir -p /etc/docker
cat >> /etc/docker/daemon.json << 'EOF'
{
  "registry-mirrors": ["https://ydfo52fm.mirror.aliyuncs.com"]
}
EOF

echo "啟動docker..."
systemctl start docker

echo "檢視版本資訊"
docker version
docker info

編輯kubeadm初始化yaml配置檔案

  • node1執行
  • master ip:192.168.6.128
  • image倉庫位址：registry.cn-hangzhou.aliyuncs.com/google_containers
    • 官方倉庫在牆外，下載下傳實在痛苦，換成阿裡雲提供的國内下載下傳位址
  • pod子網：10.244.0.0/16
  • service子網：10.96.0.0/12
  • kubeadm.yaml 
apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: abcdef.0123456789abcdef
  ttl: 24h0m0s
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 192.168.6.128
  bindPort: 6443
nodeRegistration:
  criSocket: /var/run/dockershim.sock
  name: node1
  taints:
  - effect: PreferNoSchedule
    key: node-role.kubernetes.io/master
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
  type: CoreDNS
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: registry.cn-hangzhou.aliyuncs.com/google_containers
kind: ClusterConfiguration
kubernetesVersion: v1.15.0
networking:
  dnsDomain: cluster.local
  podSubnet: 10.244.0.0/16
  serviceSubnet: 10.96.0.0/12
scheduler: {}

編輯flannel 網絡插件yml配置檔案

  • node1執行
  • 多網卡時指定 --iface=ens33 
args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=ens33
  • kube-flannel.yml 
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
  name: psp.flannel.unprivileged
  annotations:
    seccomp.security.alpha.kubernetes.io/allowedProfileNames: docker/default
    seccomp.security.alpha.kubernetes.io/defaultProfileName: docker/default
    apparmor.security.beta.kubernetes.io/allowedProfileNames: runtime/default
    apparmor.security.beta.kubernetes.io/defaultProfileName: runtime/default
spec:
  privileged: false
  volumes:
    - configMap
    - secret
    - emptyDir
    - hostPath
  allowedHostPaths:
    - pathPrefix: "/etc/cni/net.d"
    - pathPrefix: "/etc/kube-flannel"
    - pathPrefix: "/run/flannel"
  readOnlyRootFilesystem: false
  # Users and groups
  runAsUser:
    rule: RunAsAny
  supplementalGroups:
    rule: RunAsAny
  fsGroup:
    rule: RunAsAny
  # Privilege Escalation
  allowPrivilegeEscalation: false
  defaultAllowPrivilegeEscalation: false
  # Capabilities
  allowedCapabilities: ['NET_ADMIN']
  defaultAddCapabilities: []
  requiredDropCapabilities: []
  # Host namespaces
  hostPID: false
  hostIPC: false
  hostNetwork: true
  hostPorts:
  - min: 0
    max: 65535
  # SELinux
  seLinux:
    # SELinux is unsed in CaaSP
    rule: 'RunAsAny'
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: flannel
rules:
  - apiGroups: ['extensions']
    resources: ['podsecuritypolicies']
    verbs: ['use']
    resourceNames: ['psp.flannel.unprivileged']
  - apiGroups:
      - ""
    resources:
      - pods
    verbs:
      - get
  - apiGroups:
      - ""
    resources:
      - nodes
    verbs:
      - list
      - watch
  - apiGroups:
      - ""
    resources:
      - nodes/status
    verbs:
      - patch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: flannel
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: flannel
subjects:
- kind: ServiceAccount
  name: flannel
  namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: flannel
  namespace: kube-system
---
kind: ConfigMap
apiVersion: v1
metadata:
  name: kube-flannel-cfg
  namespace: kube-system
  labels:
    tier: node
    app: flannel
data:
  cni-conf.json: |
    {
      "name": "cbr0",
      "plugins": [
        {
          "type": "flannel",
          "delegate": {
            "hairpinMode": true,
            "isDefaultGateway": true
          }
        },
        {
          "type": "portmap",
          "capabilities": {
            "portMappings": true
          }
        }
      ]
    }
  net-conf.json: |
    {
      "Network": "10.244.0.0/16",
      "Backend": {
        "Type": "vxlan"
      }
    }
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-amd64
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      hostNetwork: true
      nodeSelector:
        beta.kubernetes.io/arch: amd64
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-amd64
        command:
        - cp
        args:
        - -f
        - /etc/kube-flannel/cni-conf.json
        - /etc/cni/net.d/10-flannel.conflist
        volumeMounts:
        - name: cni
          mountPath: /etc/cni/net.d
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      containers:
      - name: kube-flannel
        image: quay.io/coreos/flannel:v0.11.0-amd64
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=ens33
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            cpu: "100m"
            memory: "50Mi"
        securityContext:
          privileged: false
          capabilities:
             add: ["NET_ADMIN"]
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        volumeMounts:
        - name: run
          mountPath: /run/flannel
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      volumes:
        - name: run
          hostPath:
            path: /run/flannel
        - name: cni
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-arm64
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      hostNetwork: true
      nodeSelector:
        beta.kubernetes.io/arch: arm64
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-arm64
        command:
        - cp
        args:
        - -f
        - /etc/kube-flannel/cni-conf.json
        - /etc/cni/net.d/10-flannel.conflist
        volumeMounts:
        - name: cni
          mountPath: /etc/cni/net.d
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      containers:
      - name: kube-flannel
        image: quay.io/coreos/flannel:v0.11.0-arm64
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=ens33
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            cpu: "100m"
            memory: "50Mi"
        securityContext:
          privileged: false
          capabilities:
             add: ["NET_ADMIN"]
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        volumeMounts:
        - name: run
          mountPath: /run/flannel
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      volumes:
        - name: run
          hostPath:
            path: /run/flannel
        - name: cni
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-arm
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      hostNetwork: true
      nodeSelector:
        beta.kubernetes.io/arch: arm
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-arm
        command:
        - cp
        args:
        - -f
        - /etc/kube-flannel/cni-conf.json
        - /etc/cni/net.d/10-flannel.conflist
        volumeMounts:
        - name: cni
          mountPath: /etc/cni/net.d
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      containers:
      - name: kube-flannel
        image: quay.io/coreos/flannel:v0.11.0-arm
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=ens33
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            cpu: "100m"
            memory: "50Mi"
        securityContext:
          privileged: false
          capabilities:
             add: ["NET_ADMIN"]
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        volumeMounts:
        - name: run
          mountPath: /run/flannel
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      volumes:
        - name: run
          hostPath:
            path: /run/flannel
        - name: cni
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-ppc64le
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      hostNetwork: true
      nodeSelector:
        beta.kubernetes.io/arch: ppc64le
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-ppc64le
        command:
        - cp
        args:
        - -f
        - /etc/kube-flannel/cni-conf.json
        - /etc/cni/net.d/10-flannel.conflist
        volumeMounts:
        - name: cni
          mountPath: /etc/cni/net.d
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      containers:
      - name: kube-flannel
        image: quay.io/coreos/flannel:v0.11.0-ppc64le
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=ens33
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            cpu: "100m"
            memory: "50Mi"
        securityContext:
          privileged: false
          capabilities:
             add: ["NET_ADMIN"]
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        volumeMounts:
        - name: run
          mountPath: /run/flannel
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      volumes:
        - name: run
          hostPath:
            path: /run/flannel
        - name: cni
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-s390x
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      hostNetwork: true
      nodeSelector:
        beta.kubernetes.io/arch: s390x
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-s390x
        command:
        - cp
        args:
        - -f
        - /etc/kube-flannel/cni-conf.json
        - /etc/cni/net.d/10-flannel.conflist
        volumeMounts:
        - name: cni
          mountPath: /etc/cni/net.d
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      containers:
      - name: kube-flannel
        image: quay.io/coreos/flannel:v0.11.0-s390x
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface=ens33
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            cpu: "100m"
            memory: "50Mi"
        securityContext:
          privileged: false
          capabilities:
             add: ["NET_ADMIN"]
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        volumeMounts:
        - name: run
          mountPath: /run/flannel
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      volumes:
        - name: run
          hostPath:
            path: /run/flannel
        - name: cni
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg

執行master節點初始化

  • node1執行
  • 一鍵執行腳本 master-node-init.sh
  • 節點名稱：node1
  • 節點IP：192.168.6.128
  • 記得關firewalld和selinux 
#!/bin/bash 
# leo 20190812
# master節點一鍵初始化

echo "設定hostname與hosts"
hostnamectl set-hostname node1
cat >> /etc/hosts << EOF
192.168.6.128 node1
192.168.6.129 node2
EOF

echo "開啟ipvs"
yum -y install ipvsadm ipset bind-utils
cat > /etc/sysconfig/modules/ipvs.modules <<EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF
chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack_ipv4

echo "關swap、配置核心"
swapoff -a
sed -i 's/\/dev\/mapper\/centos-swap swap/#\/dev\/mapper\/centos-swap swap/g' /etc/fstab 
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness=0
EOF
sysctl -p /etc/sysctl.d/k8s.conf

echo "配置iptables forward預設政策"
iptables -P FORWARD ACCEPT

echo "修改docker cgroup"
cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": ["https://ydfo52fm.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
systemctl restart docker 

echo "編輯kubernetes倉庫"
cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

echo "安裝kubelet kubeadm kubectl"
yum -y install kubelet kubeadm kubectl

echo "初始化"
systemctl enable kubelet
kubeadm init --config kubeadm.yaml
#kubeadm init --kubernetes-version=1.15.0 --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=192.168.6.128 --image-repository registry.cn-hangzhou.aliyuncs.com/google_containers

mkdir -p ~/.kube
cp -i /etc/kubernetes/admin.conf ~/.kube/config
chown $(id -u):$(id -g) ~/.kube/config 

echo "安裝flannel 網絡插件"
kubectl apply -f kube-flannel.yml 

echo "檢視狀态"
kubectl get nodes 
kubectl get pods --all-namespaces -o wide

執行worker節點初始化

worker節點先pull需要的鏡像

  • node2執行
  • 執行 pull-image.sh 
#!/bin/bash

images=(
  registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.15.0
  registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.15.0
  registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.15.0
  registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.15.0
  quay.io/coreos/flannel:v0.11.0-amd64
  registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.3.1
  registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.3.10
  registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1
)

for imageName in ${images[@]} ; do
    docker pull $imageName
done

worker節點初始化

  • node2執行
  • 一鍵執行腳本 worker-node-init.sh
  • 節點名稱：node2
  • 節點IP：192.168.6.129
  • 記得關firewalld和selinux 
#!/bin/bash 
# leo 20190812
# master節點一鍵初始化

echo "設定hostname與hosts"
hostnamectl set-hostname node2
cat >> /etc/hosts << EOF
192.168.6.128 node1
192.168.6.129 node2
EOF

echo "開啟ipvs"
yum -y install ipvsadm ipset bind-utils
cat > /etc/sysconfig/modules/ipvs.modules <<EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF
chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack_ipv4

echo "關swap、配置核心"
swapoff -a
sed -i 's/\/dev\/mapper\/centos-swap swap/#\/dev\/mapper\/centos-swap swap/g' /etc/fstab 
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness=0
EOF
sysctl -p /etc/sysctl.d/k8s.conf

echo "配置iptables forward預設政策"
iptables -P FORWARD ACCEPT

echo "修改docker cgroup"
cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": ["https://ydfo52fm.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
systemctl restart docker 

echo "編輯kubernetes倉庫"
cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

echo "安裝kubelet kubeadm kubectl"
yum -y install kubelet kubeadm kubectl

echo "初始化"
systemctl enable kubelet

worker節點加入叢集

  • token會過期，以實際為準 
kubeadm join 192.168.6.128:6443 --token abcdef.0123456789abcdef \
    --discovery-token-ca-cert-hash sha256:9daddb894949b89ad7abe8e8ec35f3f015bf770b8fe30998244d631b1ef25776
  • 加入成功 
>     --discovery-token-ca-cert-hash sha256:9daddb894949b89ad7abe8e8ec35f3f015bf770b8fe30998244d631b1ef25776
[preflight] Running pre-flight checks
[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
[kubelet-start] Downloading configuration for the kubelet from the "kubelet-config-1.15" ConfigMap in the kube-system namespace
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Activating the kubelet service
[kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...

This node has joined the cluster:
* Certificate signing request was sent to apiserver and a response was received.
* The Kubelet was informed of the new secure connection details.

Run 'kubectl get nodes' on the control-plane to see this node join the cluster.

最終狀态 

[[email protected] ~]# kubectl get nodes -o wide
NAME    STATUS   ROLES    AGE   VERSION   INTERNAL-IP     EXTERNAL-IP   OS-IMAGE                KERNEL-VERSION               CONTAINER-RUNTIME
node1   Ready    master   13m   v1.15.2   192.168.6.128   <none>        CentOS Linux 7 (Core)   3.10.0-957.27.2.el7.x86_64   docker://18.9.8
node2   Ready    <none>   64s   v1.15.2   192.168.6.129   <none>        CentOS Linux 7 (Core)   3.10.0-957.27.2.el7.x86_64   docker://18.9.8
[[email protected] ~]# kubectl get pods --all-namespaces -o wide 
NAMESPACE     NAME                            READY   STATUS    RESTARTS   AGE   IP              NODE    NOMINATED NODE   READINESS GATES
kube-system   coredns-6967fb4995-ctl64        1/1     Running   0          13m   10.244.0.2      node1   <none>           <none>
kube-system   coredns-6967fb4995-sccgw        1/1     Running   0          13m   10.244.0.3      node1   <none>           <none>
kube-system   etcd-node1                      1/1     Running   0          12m   192.168.6.128   node1   <none>           <none>
kube-system   kube-apiserver-node1            1/1     Running   0          12m   192.168.6.128   node1   <none>           <none>
kube-system   kube-controller-manager-node1   1/1     Running   0          12m   192.168.6.128   node1   <none>           <none>
kube-system   kube-flannel-ds-amd64-9z4gg     1/1     Running   0          13m   192.168.6.128   node1   <none>           <none>
kube-system   kube-flannel-ds-amd64-wqpkh     1/1     Running   0          77s   192.168.6.129   node2   <none>           <none>
kube-system   kube-proxy-79lnw                1/1     Running   0          13m   192.168.6.128   node1   <none>           <none>
kube-system   kube-proxy-thn6h                1/1     Running   0          77s   192.168.6.129   node2   <none>           <none>
kube-system   kube-scheduler-node1            1/1     Running   0          12m   192.168.6.128   node1   <none>           <none>
[[email protected] ~]#
kubernetes kubeadm kubernetes1.15.0 Docker k8s叢集 k8s一鍵部署
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