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ErrorDetecting/backend/docs/tailscale_start_guide.md

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# Tailscale 启动指南
本文档用于在本项目部署/联调环境中启动与验证 Tailscale 连接。覆盖两类常见环境:
- 机器/VM 有 systemd可用 `systemctl` 管理 `tailscaled`
- 容器/受限环境无 systemd例如 PID 1 不是 systemd使用 userspace networking 启动 `tailscaled`
## 1. 前置检查
确认已安装:
```bash
which tailscale
tailscale version
```
查看当前状态:
```bash
tailscale status
```
如果提示 `failed to connect to local tailscaled`,说明 `tailscaled` 没有运行或 socket 不对。
## 2. 方式 Asystemd 环境启动(推荐)
启动并设置开机自启:
```bash
sudo systemctl start tailscaled
sudo systemctl enable tailscaled
```
登录并启用(首次需要网页登录授权):
```bash
sudo tailscale up --accept-dns=false --accept-routes=false
```
验证:
```bash
tailscale status
tailscale ip -4
```
## 3. 方式 B无 systemd / 容器环境启动userspace networking
`systemctl` 不可用(例如 PID 1 不是 systemd用 userspace networking 启动 `tailscaled`
```bash
sudo tailscaled \
--tun=userspace-networking \
--socket=/var/run/tailscale/tailscaled.sock \
--state=/var/lib/tailscale/tailscaled.state
```
为了让其在后台运行且不占用终端,可使用:
```bash
sudo nohup tailscaled \
--tun=userspace-networking \
--socket=/var/run/tailscale/tailscaled.sock \
--state=/var/lib/tailscale/tailscaled.state \
>/tmp/tailscaled.log 2>&1 &
```
首次登录(会输出一个 URL打开后完成授权
```bash
sudo tailscale up --accept-dns=false --accept-routes=false
```
验证:
```bash
tailscale status
tailscale ip -4
```
## 4. 常用参数说明
- `--accept-dns=false`:避免 Tailscale 接管系统 DNS更稳妥减少联调环境干扰
- `--accept-routes=false`:不接收其它节点宣告的子网路由(除非明确需要)
如果你看到 `Some peers are advertising routes but --accept-routes is false` 属正常提示。
## 5. 常见问题
### 5.1 `Logged out.` / `NeedsLogin`
执行:
```bash
sudo tailscale up --accept-dns=false --accept-routes=false
```
根据输出提示访问登录链接完成授权。
### 5.2 `failed to connect to local tailscaled`
说明 `tailscaled` 未运行或 socket 路径不一致:
- systemd 环境:确认 `sudo systemctl status tailscaled`
- 无 systemd 环境:确认 `tailscaled` 进程存在,以及 `--socket` 路径与 `tailscale` 命令一致
### 5.3 退出/停止
退出网络:
```bash
sudo tailscale down
```
停止守护进程:
- systemd`sudo systemctl stop tailscaled`
- 无 systemd`sudo pkill tailscaled`