前言

为避免直接在k8s的master上进行kubectl等相关行为的操作，而导致误操作k8s上master的故障，现进行在其它服务器上的操作配置

连接配置

请自行准备1台linux服务器

安装kubectl工具

]# cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
exclude=kubelet kubeadm kubectl
EOF
]# sudo yum install -y kubelet-1.20.9 kubeadm-1.20.9 kubectl-1.20.9 --disableexcludes=kubernetes ; sudo systemctl enable --now kubelet ; echo 'source <(kubectl completion bash)' >>~/.bashrc ; echo 'source <(kubeadm completion bash)' >>~/.bashrc

配置连接

• config配置文件从k8s的master的节点下的/root/.kube/config获取，并在linux服务器上修改为k8s的master节点的IP

]# mkdir -p /root/.kube
]# cd /root/.kube
]# cat > config <<-EOF
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: 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
    server: https://192.168.2.213:6443
  name: kubernetes
contexts:
- context:
    cluster: kubernetes
    user: kubernetes-admin
  name: kubernetes-admin@kubernetes
current-context: kubernetes-admin@kubernetes
kind: Config
preferences: {}
users:
- name: kubernetes-admin
  user:
    client-certificate-data: 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
    client-key-data: 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
EOF

测试

]# kubectl get node
NAME                STATUS   ROLES                  AGE   VERSION
a   Ready    control-plane,master   38h   v1.20.9
b   Ready    <none>                 38h   v1.20.9
c   Ready    <none>                 38h   v1.20.9

结语

… …