kubespray添加删除etcd节点master节点.md

###kubespray删除etcd节点 首先通过etcdctl工具删除etcd集群中的待删除节点，例如node01

etcdctl --endpoints=https://192.168.124.171:2379,https://192.168.124.172:2379,https://192.168.124.173:2379 --ca-file=/etc/ssl/etcd/ssl/ca.pem --key-file=/etc/ssl/etcd/ssl/member-node01-key.pem --cert-file=/etc/ssl/etcd/ssl/member-node01.pem member list

找出node01的id 删除etcd member node01

etcdctl --endpoints=https://192.168.124.171:2379,https://192.168.124.172:2379,https://192.168.124.173:2379 --ca-file=/etc/ssl/etcd/ssl/ca.pem --key-file=/etc/ssl/etcd/ssl/member-node01-key.pem --cert-file=/etc/ssl/etcd/ssl/member-node01.pem member remove node01id

###kubespray添加etcd节点 在hosts.ini中添加新的机器，执行cluster.yml脚本（加上-l etcd 所有的 node） 例如，原hosts.ini为

[all]
node01 ansible_host=192.168.124.171 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key
node02 ansible_host=192.168.124.172 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key
node03 ansible_host=192.168.124.173 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key

[kube-deploy]
node01

[etcd]
node01

[kube-master]
node01
node02

[kube-node]
node01
node02
node03

[k8s-cluster:children]
kube-master
kube-node

添加新的etcd节点后的hosts.ini为

[all]
node01 ansible_host=192.168.124.171 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key
node02 ansible_host=192.168.124.172 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key
node03 ansible_host=192.168.124.173 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key

[kube-deploy]
node01

[etcd]
node01
node02
node03

[kube-master]
node01
node02

[kube-node]
node01
node02
node03

[k8s-cluster:children]
kube-master
kube-node

执行命令，添加etcd节点

ansible-playbook -i inventory/rong/hosts.ini cluster.yml -l node01,node02,node03 -v

###kubespray添加master节点 例如，原hosts.ini为

[all]
node01 ansible_host=192.168.124.171 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key

[kube-deploy]
node01

[etcd]
node01

[kube-master]
node01


[kube-node]
node01

[k8s-cluster:children]
kube-master
kube-node

添加新的master节点后的hosts.ini为

[all]
node01 ansible_host=192.168.124.171 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key
node02 ansible_host=192.168.124.172 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key

[kube-deploy]
node01

[etcd]
node01


[kube-master]
node01
node02

[kube-node]
node01


[k8s-cluster:children]
kube-master
kube-node

执行命令，添加master节点

ansible-playbook -i inventory/rong/hosts.ini cluster.yml  -v

###kubespray删除master节点

例如，原hosts.ini为

[all]
node01 ansible_host=192.168.124.171 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key
node02 ansible_host=192.168.124.172 ansible_ssh_user=root ansible_ssh_private_key_file=./deploy.key

[kube-deploy]
node01

[etcd]
node01

[kube-master]
node01
node02


[kube-node]
node01

[k8s-cluster:children]
kube-master
kube-node

需要删除master节点node02。 执行命令，删除master节点node02。

ansible-playbook -i inventory/rong/hosts.ini remove-node.yml  -v --extra-vars "node=node02“

总结： 如果一个节点是etcd，master，worker节点角色，添加时。 1）当作etcd节点添加； 2）当作master节点添加； 3）当作worker节点添加。

如果一个节点是etcd，master，worker节点角色，删除时。 1）当作etcd节点删除； 2）当作worker节点删除；（此时，已经从k8s集群中删除，删除master和删除worker节点是一样的操作）