https://ops.freeedge.uk/tags/%E7%9B%91%E6%8E%A7/ Recent content in 监控 on Ops FreeEdge Hugo en-us Sat, 04 Apr 2026 03:30:00 +0000 https://ops.freeedge.uk/posts/tailscale-observability/ Sat, 04 Apr 2026 03:30:00 +0000 https://ops.freeedge.uk/posts/tailscale-observability/ <h1 id="tailscale-可观测性prometheus-指标导出与-grafana-监控面板深度解析">Tailscale 可观测性：Prometheus 指标导出与 Grafana 监控面板深度解析</h1> <h2 id="引言">引言</h2> <p>Tailscale 作为一款基于 WireGuard 的零配置 VPN 解决方案，以其简便性和安全性深受 DevOps 工程师青睐。然而，在生产环境中部署 Tailscale tailnet（Tailscale 网络）时，可观测性是确保系统稳定性和性能的关键。本文将深入探讨 Tailscale 的 Prometheus 指标导出机制，包括客户端指标端点（端口 8080，默认 webclient）、Prometheus 抓取配置、核心指标解析（如设备连接、DERP 延迟相关、ACL 命中）、Grafana 仪表板搭建、告警规则设计，以及 tailnet 健康监控的实际案例。通过这些技术实践，您可以构建一个全面的可观测性栈，实现对 Tailscale 网络的实时监控和故障诊断。</p> <p>Tailscale 从 v1.78.0 开始支持客户端指标导出，这些指标覆盖子网路由、DERP 中继、吞吐量、丢包等维度。尽管任务提及端口 9090（可能指 tailscaled 调试端点），本文基于官方文档重点使用标准 webclient 端点（100.100.100.100:80/metrics 或 Tailscale IP:8080/metrics）。</p> <h2 id="tailscale-指标端点详解">Tailscale 指标端点详解</h2> <p>Tailscale 客户端暴露 Prometheus 兼容的 <code>/metrics</code> 端点，支持本地访问和 tailnet 内远程抓取。</p> <h3 id="启用指标导出">启用指标导出</h3> <ol> <li><strong>本地访问</strong>：无需额外配置，直接访问 <code>http://100.100.100.100/metrics</code>（quad-100 地址，端口 80）。</li> <li><strong>tailnet 远程访问</strong>： <ul> <li>执行 <code>tailscale set --webclient</code> 启用 web 界面（默认监听 Tailscale IP:8080）。</li> <li>在 tailnet 策略文件中添加 ACL： <div class="goat svg-container "> <svg xmlns="http://www.w3.org/2000/svg" font-family="Menlo,Lucida Console,monospace" viewBox="0 0 504 57" > <g transform='translate(8,16)'> <text text-anchor='middle' x='0' y='4' fill='currentColor' style='font-size:1em'>"</text> <text text-anchor='middle' x='0' y='36' fill='currentColor' style='font-size:1em'>]</text> <text text-anchor='middle' x='8' y='4' fill='currentColor' style='font-size:1em'>a</text> <text text-anchor='middle' x='16' y='4' fill='currentColor' style='font-size:1em'>c</text> <text text-anchor='middle' x='16' y='20' fill='currentColor' style='font-size:1em'>{</text> <text 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