kubernetes集群名称怎么看？或者怎么设置kubernetes集群名称？是一开始设置hosts里面master的名称吗？
嗯，可以通过 下面的命令来查看集群相关的信息
┌──[root@vms81.liruilongs.github.io]-[~]
└─$kubectl config view
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: DATA+OMITTED
server: https://192.168.26.81:6443
name: kubernetes
contexts:
- context:
cluster: kubernetes
namespace: liruilong-deploy-create
user: kubernetes-admin
name: kubernetes-admin@kubernetes
current-context: kubernetes-admin@kubernetes
kind: Config
preferences: {}
users:
- name: kubernetes-admin
user:
client-certificate-data: REDACTED
client-key-data: REDACTED
clusters 为相关集群信息，他是一个数组，如果多集群的话，会一次展示，比如下面，只有一个集群，名字是 kubernetes , 这是 使用 kubeadm 安装 默认的集群名字
┌──[root@vms81.liruilongs.github.io]-[~]
└─$kubectl config view -o json | jq .clusters
[
{
"name": "kubernetes",
"cluster": {
"server": "https://192.168.26.81:6443",
"certificate-authority-data": "DATA+OMITTED"
}
}
]
如果你想改变集群的名字，可以直接修改 kubeconfig 文件中的 name 字段,如果希望多集群切换，就需要合并 kubeconfig 文件，需要修改集群的名字 ，类似下面这样
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: LS0.........0tCg==
server: https://192.168.26.81:6443
name: cluster1
- cluster:
certificate-authority-data: LS0.........0tCg==
server: https://192.168.26.91:6443
name: cluster2
contexts:
- context:
cluster: cluster1
namespace: kube-public
user: kubernetes-admin1
name: context1
- context:
cluster: cluster2
namespace: kube-system
user: kubernetes-admin2
name: context2
current-context: context2
kind: Config
preferences: {}
users:
- name: kubernetes-admin1
user:
client-certificate-data: LS0.......0tCg==
client-key-data: LS0......LQo=
- name: kubernetes-admin2
user:
client-certificate-data: LS0.......0tCg==
client-key-data: LS0......0tCg==
修改完看到的信息会是这样
┌──[root@vms81.liruilongs.github.io]-[~/.kube]
└─$kubectl config get-contexts
CURRENT NAME CLUSTER AUTHINFO NAMESPACE
* context1 cluster1 kubernetes-admin1 kube-public
context2 cluster2 kubernetes-admin2 kube-system
kubernetes 本身是没有"集群名称"这个概念的。不知道你是从哪儿听说到的这个概念