这篇文章主要介绍K8S多master中如何部署Master02，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
| 角色 | 地址 | 安装组件 |
|---|
| master | 192.168.142.220 | kube-apiserver kube-controller-manager kube-scheduler etcd |
| master02 | 192.168.142.120 | kube-apiserver kube-controller-manager kube-scheduler |
| node1 | 192.168.142.136 | kubelet kube-proxy docker flannel etcd |
| node2 | 192.168.142.132 | kubelet kube-proxy docker flannel etcd |
| nginx1 | 192.168.142.130 | nginx keepalived |
| nginx2 | 192.168.142.140 | nginx keepalived |
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
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