k8s-新增master节点
在当前唯一的master节点上运行如下命令第一步：kubeadm init phase upload-certs --upload-certs执行结果如下：1 # kubeadm init phase upload-certs --upload-certs2 I1109 14:34:00.836965 5988 version.go:255] remote version is much newer: v1.25.3; falling back to: stable-1.22
3 Storing the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
4 Using certificate key:
5 ecf2abbfdf3a7bc45ddb2de75152ec12889971098d69939b98e4451b53aa3033第二步：
kubeadm token create --print-join-command执行结果如下# kubeadm token create --print-join-command
kubeadm join 172.16.0.1:6443 --token xxxxxx --discovery-token-ca-cert-hash sha256:xxxxxxx第三步：将得到的token和key进行拼接，得到如下命令：kubeadm join 172.16.0.1:6443 --token q466v0.hbk3qjreznjsf8ew --discovery-token-ca-cert-hash xxxxxxx --control-plane --certificate-key xxxxxxx注意事项：
[*]不要使用 --experimental-control-plane，会报错
[*]要加上--control-plane --certificate-key ，不然就会添加为node节点而不是master
[*]join的时候节点上不要部署，如果部署了kubeadm reset后再join
第四步：join之后在原先唯一的master节点上成功后，显示如下消息：This node has joined the cluster and a new control plane instance was created:
* Certificate signing request was sent to apiserver and approval was received.
* The Kubelet was informed of the new secure connection details.
* Control plane (master) label and taint were applied to the new node.
* The Kubernetes control plane instances scaled up.
* A new etcd member was added to the local/stacked etcd cluster.
To start administering your cluster from this node, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
Run 'kubectl get nodes' to see this node join the cluster.这样，我们在任何一个master节点上使用命令
kubectl get nodes都能看到现在是全部的节点：# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master Ready master 57m v1.18.0
k8s-master1 Ready master 21m v1.18.0
k8s-master2 Ready master 21m v1.18.0
k8s-node1 Ready <none> 56m v1.18.0
k8s-node2 Ready <none> 56m v1.18.0
k8s-node3 Ready <none> 56m v1.18.0
k8s-node4 Ready <none> 56m v1.18.0
k8s-node5 Ready <none> 56m v1.18.0报错：1. 第一次加入集群的时候会有以下报错： 1 Running pre-flight checks
2 Reading configuration from the cluster...
3 FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
4 error execution phase preflight:
5 One or more conditions for hosting a new control plane instance is not satisfied.
6
7 unable to add a new control plane instance a cluster that doesn't have a stable controlPlaneEndpoint address
8
9 Please ensure that:
10 * The cluster has a stable controlPlaneEndpoint address.
11 * The certificates that must be shared among control plane instances are provided.
12
13
14 To see the stack trace of this error execute with --v=5 or higher解决办法如下：查看kubeadm-config.yaml
kubectl -n kube-system get cm kubeadm-config -oyaml
发现没有controlPlaneEndpoint
添加controlPlaneEndpoint
kubectl -n kube-system edit cm kubeadm-config
大概在这么个位置：
kind: ClusterConfiguration
kubernetesVersion: v1.18.0
controlPlaneEndpoint: 172.16.0.56:6443
然后再在准备添加为master的节点上执行kubeadm join的命令
来源:https://www.cnblogs.com/qianyuliang/p/17044626.html
免责声明：由于采集信息均来自互联网，如果侵犯了您的权益，请联系我们【E-Mail:cb@itdo.tech】 我们会及时删除侵权内容，谢谢合作！
页:
[1]