添加node
1、master生成token
[[email protected]01 ~]# kubeadm token create --print-join-command kubeadm join 172.19.8.250:8443 --token 83glhm.30nf8cih0q8960nu --discovery-token-ca-cert-hash sha256:30d13676940237d9c4f0c5c05e67cbeb58cc031f97e3515df27174e6cb777f60
2、待加入的node节点确保kubelet，docker已启动
每一个node的kubelet都必须进去设置cgroup-drive和swap关闭的启动选项.
注意检查 /var/lib/kubelet/kubeadm-flags.env
[[email protected]06 ~]# cat /var/lib/kubelet/kubeadm-flags.env KUBELET_KUBEADM_ARGS=--cgroup-driver=systemd --network-plugin=cni --pod-infra-container-image=k8s.gcr.io/pause:3.1
3、 docker采用docker-ce需要注意该文件，如果没有就创建
[[email protected]06 ~]# cat /etc/docker/daemon.json
{
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2",
"storage-opts": [
"overlay2.override_kernel_check=true"
]
}
4、 关闭swap,并注销/etc/fstab 关于swap的配置信息
swapoff -a
5、 启动kubelet和docker
[[email protected]06 ~]# systemctl start kubelet [[email protected]-06 ~]# systemctl strart docker
6、 master 检查节点是否加入
[[email protected]01 ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION node-01 Ready master 2d19h v1.14.1 node-02 Ready master 2d19h v1.14.1 node-03 Ready master 2d19h v1.14.1 node-04 Ready <none> 2d19h v1.14.1 node-05 Ready <none> 2d19h v1.14.1 node-06 Ready <none> 78s v1.14.1
如果node上显示添加成功，但Master上显示不出来，在node机上使用systemctl status kubelet查看下服务的状态，检查里面的各项状态，单独处理。
删除node
1、 删除一个节点前，先驱赶掉上面的pod
kubectl drain node-06 --delete-local-data --force --ignore-daemonsets
此时节点上面的pod开始迁移
检查节点状态，被标记为不可调度节点
[[email protected]01 ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION node-01 Ready master 2d19h v1.14.1 node-02 Ready master 2d18h v1.14.1 node-03 Ready master 2d18h v1.14.1 node-04 Ready <none> 2d18h v1.14.1 node-05 Ready <none> 2d18h v1.14.1 node-06 Ready,SchedulingDisabled <none> 2d18h v1.14.1
最后删除节点
[[email protected]01 ~]# kubectl delete node node-06 node "node-06” deleted [[email protected]-01 ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION node-01 Ready master 2d19h v1.14.1 node-02 Ready master 2d19h v1.14.1 node-03 Ready master 2d19h v1.14.1 node-04 Ready <none> 2d18h v1.14.1 node-05 Ready <none> 2d18h v1.14.1
原文地址：https://www.cnblogs.com/cptao/p/10912709.html
时间： 2024-10-10 19:00:26