修改兩個kubeconfig.json的內容

{
    "kind": "Config",
    "apiVersion": "v1",
    "preferences": {},
    "clusters": [ {
        "name": "externalCluster", # 修改這里-1
        "cluster": {
            "server": "https://119.xxx.xxx.xxx:5443",
            "insecure-skip-tls-verify": true
        }
    }],
    "users": [{
        "name": "user", # 修改這里-2
        "user": {
            "client-certificate-data": "LS0tLS1CRUdJTxM...",
            "client-key-data": "LS0tLS1CRUdJTiB...."
        }
    }],
    "contexts": [{
        "name": "external", # 修改這里-3
        "context": {
            "cluster": "externalCluster", # 修改這里-1
            "user": "user" # 修改這里-2
        }
    }],
    "current-context": "external" # 修改這里-3
}

合并kubeconfig.json

# 備份原始 kubeconfig 文件
cp ~/.kube/config ~/.kube/config.bak

# 合并 kubeconfig1.json 和 kubeconfig2.json
KUBECONFIG=kubeconfig1.json:kubeconfig2.json kubectl config view --flatten > ~/.kube/config

使用方式

# 切換集群
kubectl config use-context Cluster-A-Context
# 查看集群信息
kubectl cluster-info