65 lines
1.2 KiB
Markdown
65 lines
1.2 KiB
Markdown
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> 本文作者：丁辉
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# Kubectl配置多集群
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## 基础命令
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- 查看和显示当前配置的Kubernetes集群、用户和上下文等信息
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```bash
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kubectl config view
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```
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- 查看当前上下文（context）的名称
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```bash
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kubectl config current-context
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```
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- 切换当前 `kubectl` 上下文（context）
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```bash
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kubectl config use-context $cluster-name
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```
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## 配置Kubectl多集群
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> 前提条件：
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>
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> 使用 `kubectl config view` 命令查看
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>
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> 1. 集群 `cluster-name` 不同(现有：cluster1 和 cluster2)
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> 2. 集群 `cluster-user` 不同(现有：kube-admin-cluster1 和 kube-admin-cluster2)s备份config文件
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1. cluster1 和 cluster2 备份config文件
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```bash
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cp ~/.kube/config ~/.kube/config.bak
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```
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2. 拷贝 cluster2 config 文件到 cluster1 节点上
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```bash
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scp ~/.kube/config root@cluster1:/root
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```
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3. 合并配置文件
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```bash
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KUBECONFIG=~/.kube/config:/root/config kubectl config view --flatten > /tmp/config
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```
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4. 替换 cluster1 config 文件
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```bash
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\mv /tmp/config ~/.kube/config
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```
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5. 测试，在 cluster1 上切换到 cluster2
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```bash
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kubectl config use-context cluster2
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```
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