---
title: 在MacOS中运行k3s
description: 使用Multipass在ubuntu虚拟机中运行k3s
categories: [随笔]
---

# k3s

> <https://github.com/caicloud/kube-ladder>

安装ubuntu家的multipass虚拟机

```sh
brew install multipass
```

(镜像路径在/var/root/Library/Caches/multipassd/qemu/vault/images下)

创建一个虚拟机并启动

```sh
multipass launch -n k3s01 -c 2 -m 2G -d 16G
```

查看虚拟机

```sh
multipass list
multipass info k3s01
```

进入虚拟机终端

```sh
multipass shell k3s01
```

设置root密码，更新apt

```sh
sudo passwd
apt-get update
```

数据卷，数据传输

```sh
multipass mount host-path vm-name:vm-path
multipass umount vm-name
multipass transfer host-file vm-name:vm-path
```

虚拟机操作

```sh
multipass start/stop/delete/purge vm-name
```

指定虚拟机初始化时的配置、执行的命令等

```sh
multipass launch -n vm-name --cloud-init config.yaml

# config.yaml
runcmd:
	- apt-get update # 更新包
	- curl -sfL https://get.k3s.io | sh - # 安装k3s
	- echo "alias k=kubectl" >> ~/.bash_aliases
```

指定k3s启动时config的访问权限，使得在非root用户下也能kubectl管理k3s

```sh
sudo vim /etc/systemd/system/k3s.service

# k3s.service
ExecStart=/usr/local/bin/k3s \
    server --write-kubeconfig-mode "0666" \ # 所有人可读写
    
sudo systemctl daemon-reload # 重新加载配置
sudo systemctl restart k3s # 重启k3s
kubectl get nodes

# 输出
NAME    STATUS   ROLES                  AGE   VERSION
k3s01   Ready    control-plane,master   9h    v1.30.4+k3s1
```

默认集群配置文件路径为`/etc/rancher/k3s/k3s.yaml`

接下来就是参照tutorial动手实践部署k8s各个components就行了。