解压安装包
[root@k8s-master1 ~]# tar zxf kubernetes-node-linux-amd64.tar.gz
拷贝配置文件到指定目录
[root@k8s-master1 ~]# cp -a /root/kubernetes/node/bin/kubelet /opt/kubernetes/bin/ [root@k8s-master1 ~]# cp -a /root/kubernetes/node/bin/kube-proxy /opt/kubernetes/bin/
部署kubelet
- 创建配置文件
[root@k8s-master1 ~]# cat > /opt/kubernetes/cfg/kubelet.conf << EOF KUBELET_OPTS="--logtostderr=false \\ --v=2 \\ --log-dir=/opt/kubernetes/logs \\ --hostname-override=k8s-master1 \\ --network-plugin=cni \\ --kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \\ --bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \\ --config=/opt/kubernetes/cfg/kubelet-config.yml \\ --cert-dir=/opt/kubernetes/ssl \\ --pod-infra-container-image=lizhenliang/pause-amd64:3.0" EOF
- –hostname-override:显示名称,集群中唯一
- –network-plugin:启用CNI
- –kubeconfig:空路径,会自动生成,后面用于连接apiserver
- –bootstrap-kubeconfig:首次启动向apiserver申请证书
- –config:配置参数文件
- –cert-dir:kubelet证书生成目录
- –pod-infra-container-image:管理Pod网络容器的镜像
配置参数文件
cat > /opt/kubernetes/cfg/kubelet-config.yml << EOF kind: KubeletConfiguration apiVersion: kubelet.config.k8s.io/v1beta1 address: 0.0.0.0 port: 10250 readOnlyPort: 10255 cgroupDriver: cgroupfs clusterDNS: - 10.0.0.2 clusterDomain: cluster.local failSwapOn: false authentication: anonymous: enabled: false webhook: cacheTTL: 2m0s enabled: true x509: clientCAFile: /opt/kubernetes/ssl/ca.pem authorization: mode: Webhook webhook: cacheAuthorizedTTL: 5m0s cacheUnauthorizedTTL: 30s evictionHard: imagefs.available: 15% memory.available: 100Mi nodefs.available: 10% nodefs.inodesFree: 5% maxOpenFiles: 1000000 maxPods: 110 EOF
拷贝已经生成的 kubelet bootstrap kubeconfig 配置文件
[root@k8s-node1 ~]# scp -r /opt/kubernetes/cfg/bootstrap.kubeconfig 10.10.1.37:/opt/kubernetes/cfg/
systemd管理kubelet
[root@k8s-master1 ~]#
cat > /usr/lib/systemd/system/kubelet.service << EOF
[Unit]
Description=Kubernetes Kubelet
After=docker.service
[Service]
EnvironmentFile=/opt/kubernetes/cfg/kubelet.conf
ExecStart=/opt/kubernetes/bin/kubelet \$KUBELET_OPTS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
启动并设置开机启动
[root@k8s-master1 ~]# systemctl daemon-reload [root@k8s-master1 ~]# systemctl start kubelet [root@k8s-master1 ~]# systemctl enable kubelet
批准kubelet证书申请并加入集群
[root@k8s-master1 ~]# kubectl get csr NAME AGE SIGNERNAME REQUESTOR CONDITION node-csr-73i3ezAXElnfKMp6GZxOtgoBUsYTY3HhFboiiqrZa_s 33s kubernetes.io/kube-apiserver-client-kubelet kubelet-bootstrap Pending [root@k8s-master1 ~]# kubectl certificate approve node-csr-73i3ezAXElnfKMp6GZxOtgoBUsYTY3HhFboiiqrZa_s certificatesigningrequest.certificates.k8s.io/node-csr-73i3ezAXElnfKMp6GZxOtgoBUsYTY3HhFboiiqrZa_s approved [root@k8s-master1 ~]# kubectl get node NAME STATUS ROLES AGE VERSION k8s-node1 Ready <none> 17h v1.18.5 k8s-node2 Ready <none> 17h v1.18.5 [root@k8s-master1 ~]# kubectl get node NAME STATUS ROLES AGE VERSION k8s-master1 NotReady <none> 6s v1.18.5 k8s-node1 Ready <none> 17h v1.18.5 k8s-node2 Ready <none> 17h v1.18.5
另外一台也按这样操作即可
[root@k8s-master2 ~]# kubectl get node NAME STATUS ROLES AGE VERSION k8s-master1 NotReady <none> 4m21s v1.18.5 k8s-master2 NotReady <none> 48s v1.18.5 k8s-node1 Ready <none> 17h v1.18.5 k8s-node2 Ready <none> 17h v1.18.5
部署CNI网络
- 同样的方法,创建目录和解压即可
[root@k8s-master1 ~]# mkdir -p /opt/cni/bin [root@k8s-master1 ~]# tar zxvf cni-plugins-linux-amd64-v0.8.6.tgz -C /opt/cni/bin
- 查看网络状态
[root@k8s-master1 ~]# kubectl get node NAME STATUS ROLES AGE VERSION k8s-master1 Ready <none> 9m13s v1.18.5 k8s-master2 Ready <none> 5m40s v1.18.5 k8s-node1 Ready <none> 17h v1.18.5 k8s-node2 Ready <none> 17h v1.18.5
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