以下所有操作均在单master群集已完成部署的情况下进行。如没有部署完成，具体安装步骤请阅读本人之前的博客。

服务器角色分配

一、Master02配置

分隔符前的操作均在master01上进行

复制目录到master02

复制kubernetes目录到master02

[root@master k8s]# scp -r /opt/kubernetes/ root@192.168.142.120:/opt

复制etcd目录到master02

master02一定要有etcd证书，否则apiserver服务无法启动

[root@master k8s]# scp -r /opt/etcd/ root@192.168.142.120:/opt

复制服务启动脚本

kube-apiserver.service kube-controller-manager.service kube-scheduler.service

[root@master k8s]# scp /usr/lib/systemd/system/{kube-apiserver,kube-controller-manager,kube-scheduler}.service root@192.168.142.120:/usr/lib/systemd/system/

修改服务脚本

实际上仅需要修改apiserver即可

[root@master02 k8s]# cd /opt/kubernetes/cfg/
[root@master02 cfg]# vim kube-apiserver
KUBE_APISERVER_OPTS="--logtostderr=true --v=4 --etcd-servers=https://192.168.142.220:2379,https://192.168.142.136:2379,https://192.168.142.132:2379 #注意地址更改
--bind-address=192.168.142.120 --secure-port=6443 #注意地址更改
--advertise-address=192.168.142.120 --allow-privileged=true --service-cluster-ip-range=10.0.0.0/24 --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction --authorization-mode=RBAC,Node --kubelet-https=true --enable-bootstrap-token-auth --token-auth-file=/opt/kubernetes/cfg/token.csv --service-node-port-range=30000-50000 --tls-cert-file=/opt/kubernetes/ssl/server.pem  --tls-private-key-file=/opt/kubernetes/ssl/server-key.pem --client-ca-file=/opt/kubernetes/ssl/ca.pem --service-account-key-file=/opt/kubernetes/ssl/ca-key.pem --etcd-cafile=/opt/etcd/ssl/ca.pem --etcd-certfile=/opt/etcd/ssl/server.pem --etcd-keyfile=/opt/etcd/ssl/server-key.pem"

开启服务

[root@master02 cfg]# systemctl start kube-apiserver.service 
[root@master02 cfg]# systemctl start kube-controller-manager.service 
[root@master02 cfg]# systemctl start kube-scheduler.service

结果验证

//增加环境变量
[root@master02 cfg]# vim /etc/profile
//末尾添加
export PATH=$PATH:/opt/kubernetes/bin/
[root@master02 cfg]# source /etc/profile

//见到如下画面即为成功
[root@master02 cfg]# kubectl get node
NAME              STATUS   ROLES    AGE     VERSION
192.168.142.132   Ready    <none>   2d12h   v1.12.3
192.168.142.136   Ready    <none>   38h     v1.12.3

未完待续~~~

K8S多master部署一：部署Master02

原文：https://blog.51cto.com/14484404/2469977