kubeadm集群添加新节点

1.生成添加node节点token

kubeadm token create --print-join-command

结果示例

 kubeadm join 10.10.10.10:6443 --token xxxxxx.xxx...xxx --discovery-token-ca-cert-hash sha256:xxxxx...xxxxb

2.在master上生成用于新master加入的证书获取Using certificate key

kubeadm init phase upload-certs --experimental-upload-certs

结果示例

 [root@master ~]# kubeadm init phase upload-certs --experimental-upload-certs
...
...
 [upload-certs] Using certificate key:
 e799a655f667fc327ab8c91f4f2541b57b96d2693ab5af96314ebddea7a68526

添加node，执行1步骤生成的命令

命令示例

kubeadm join 10.10.10.10:6443 --token xxxxxx.xxx...xxx --discovery-token-ca-cert-hash sha256:xxxxx...xxxx

添加master，把1步骤的命令后面加上 --experimental-control-plane --certificate-key 末尾加上2步骤生成的Using certificate key。

命令示例

kubeadm join 10.10.10.10:6443 --token xxxxxx.xxx...xxx --discovery-token-ca-cert-hash sha256:xxxxx...xxxx --experimental-control-plane --certificate-key xxx...xxx