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-<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="An open source, self-hosted implementation of the Tailscale control server."><meta name=author content="Headscale authors"><link href=https://juanfont.github.io/headscale/development/ref/tls/ rel=canonical><link href=../routes/ rel=prev><link href=../policy/ rel=next><link rel=icon href=../../assets/favicon.png><meta name=generator content="mkdocs-ProperDocs 1.6.7, mkdocs-materialx-10.2.2"><title>TLS - Headscale</title><link rel=stylesheet href=../../assets/stylesheets/main.1d60cbd7.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.a45159b5.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><script>__md_scope=new URL("../..",location),__md_hash=e=>[...e].reduce(((e,_)=>(e<<5)-e+_.charCodeAt(0)),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script><meta property=og:type content=website><meta property=og:title content="TLS - Headscale"><meta property=og:description content="An open source, self-hosted implementation of the Tailscale control server."><meta property=og:image content=https://juanfont.github.io/headscale/development/assets/images/social/ref/tls.png><meta property=og:image:type content=image/png><meta property=og:image:width content=1200><meta property=og:image:height content=630><meta content=https://juanfont.github.io/headscale/development/ref/tls/ property=og:url><meta property=twitter:card content=summary_large_image><meta property=twitter:title content="TLS - Headscale"><meta property=twitter:description content="An open source, self-hosted implementation of the Tailscale control server."><meta property=twitter:image content=https://juanfont.github.io/headscale/development/assets/images/social/ref/tls.png></head> <body dir=ltr data-md-color-scheme=default data-md-color-primary=indigo data-md-color-accent=indigo data-mx-topbar=glass> <input class=md-toggle data-md-toggle=drawer type=checkbox id=__drawer autocomplete=off> <input class=md-toggle data-md-toggle=toc type=checkbox id=__toc autocomplete=off> <input class=md-toggle data-md-toggle=search type=checkbox id=__search autocomplete=off> <label class=md-overlay for=__drawer></label> <label class=md-overlay for=__toc></label> <div data-md-component=skip> <a href=#running-the-service-via-tls-optional class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <div data-md-color-scheme=default data-md-component=outdated hidden> </div> <header class=md-header data-md-component=header> <nav class="md-header__inner md-grid" aria-label=Header> <a href=../.. title=Headscale class="md-header__button md-logo" aria-label=Headscale data-md-component=logo> <img src=../../assets/logo/headscale3-dots.svg alt=logo> </a> <label class="md-header__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3zm0 5h18v2H3zm0 5h18v2H3z"/></svg> </label> <div class=md-header__title data-md-component=header-title> <div class=md-header__ellipsis> <div class=md-header__topic> <span class=md-ellipsis> Headscale </span> </div> <div class=md-header__topic data-md-component=header-topic> <span class=md-ellipsis> TLS </span> </div> </div> </div> <form class=md-header__option data-md-component=palette> <input class=md-option data-md-color-media=(prefers-color-scheme) data-md-color-scheme=default data-md-color-primary=indigo data-md-color-accent=indigo aria-label="Switch to light mode" type=radio name=__palette id=__palette_0> <label class="md-header__button md-icon" title="Switch to light mode" for=__palette_1 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="m14.3 16-.7-2h-3.2l-.7 2H7.8L11 7h2l3.2 9zM20 8.69V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12zm-9.15 3.96h2.3L12 9z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme=default data-md-color-primary=indigo data-md-color-accent=indigo aria-label="Switch to dark mode" type=radio name=__palette id=__palette_1> <label class="md-header__button md-icon" title="Switch to dark mode" for=__palette_2 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a4 4 0 0 0-4 4 4 4 0 0 0 4 4 4 4 0 0 0 4-4 4 4 0 0 0-4-4m0 10a6 6 0 0 1-6-6 6 6 0 0 1 6-6 6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-sLine truncated
+<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="An open source, self-hosted implementation of the Tailscale control server."><meta name=author content="Headscale authors"><link href=https://juanfont.github.io/headscale/development/ref/tls/ rel=canonical><link href=../routes/ rel=prev><link href=../policy/ rel=next><link rel=icon href=../../assets/favicon.png><meta name=generator content="mkdocs-ProperDocs 1.6.7, mkdocs-materialx-10.2.2"><title>TLS - Headscale</title><link rel=stylesheet href=../../assets/stylesheets/main.1d60cbd7.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.a45159b5.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><script>__md_scope=new URL("../..",location),__md_hash=e=>[...e].reduce(((e,_)=>(e<<5)-e+_.charCodeAt(0)),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script><meta property=og:type content=website><meta property=og:title content="TLS - Headscale"><meta property=og:description content="An open source, self-hosted implementation of the Tailscale control server."><meta property=og:image content=https://juanfont.github.io/headscale/development/assets/images/social/ref/tls.png><meta property=og:image:type content=image/png><meta property=og:image:width content=1200><meta property=og:image:height content=630><meta content=https://juanfont.github.io/headscale/development/ref/tls/ property=og:url><meta property=twitter:card content=summary_large_image><meta property=twitter:title content="TLS - Headscale"><meta property=twitter:description content="An open source, self-hosted implementation of the Tailscale control server."><meta property=twitter:image content=https://juanfont.github.io/headscale/development/assets/images/social/ref/tls.png></head> <body dir=ltr data-md-color-scheme=default data-md-color-primary=indigo data-md-color-accent=indigo data-mx-topbar=glass> <input class=md-toggle data-md-toggle=drawer type=checkbox id=__drawer autocomplete=off> <input class=md-toggle data-md-toggle=toc type=checkbox id=__toc autocomplete=off> <input class=md-toggle data-md-toggle=search type=checkbox id=__search autocomplete=off> <label class=md-overlay for=__drawer></label> <label class=md-overlay for=__toc></label> <div data-md-component=skip> <a href=#running-the-service-via-tls-optional class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <div data-md-color-scheme=default data-md-component=outdated hidden> </div> <header class=md-header data-md-component=header> <nav class="md-header__inner md-grid" aria-label=Header> <a href=../.. title=Headscale class="md-header__button md-logo" aria-label=Headscale data-md-component=logo> <img src=../../assets/logo/headscale3-dots.svg alt=logo> </a> <label class="md-header__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3zm0 5h18v2H3zm0 5h18v2H3z"/></svg> </label> <div class=md-header__title data-md-component=header-title> <div class=md-header__ellipsis> <div class=md-header__topic> <span class=md-ellipsis> Headscale </span> </div> <div class=md-header__topic data-md-component=header-topic> <span class=md-ellipsis> TLS </span> </div> </div> </div> <form class=md-header__option data-md-component=palette> <input class=md-option data-md-color-media=(prefers-color-scheme) data-md-color-scheme=default data-md-color-primary=indigo data-md-color-accent=indigo aria-label="Switch to light mode" type=radio name=__palette id=__palette_0> <label class="md-header__button md-icon" title="Switch to light mode" for=__palette_1 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="m14.3 16-.7-2h-3.2l-.7 2H7.8L11 7h2l3.2 9zM20 8.69V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12zm-9.15 3.96h2.3L12 9z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme=default data-md-color-primary=indigo data-md-color-accent=indigo aria-label="Switch to dark mode" type=radio name=__palette id=__palette_1> <label class="md-header__button md-icon" title="Switch to dark mode" for=__palette_2 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a4 4 0 0 0-4 4 4 4 0 0 0 4 4 4 4 0 0 0 4-4 4 4 0 0 0-4-4m0 10a6 6 0 0 1-6-6 6 6 0 0 1 6-6 6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-sLine truncated
 </span><span id=__span-0-2><a id=__codelineno-0-2 name=__codelineno-0-2 href=#__codelineno-0-2></a><span class=w>  </span><span class=nt>cert_path</span><span class=p>:</span><span class=w> </span><span class=s>""</span>
 </span><span id=__span-0-3><a id=__codelineno-0-3 name=__codelineno-0-3 href=#__codelineno-0-3></a><span class=w>  </span><span class=nt>key_path</span><span class=p>:</span><span class=w> </span><span class=s>""</span>
-</span></code></pre></div> <p>The certificate should contain the full chain, else some clients, like the Tailscale Android client, will reject it.</p> <h2 id=lets-encrypt-acme>Let's Encrypt / ACME<a class=headerlink href=#lets-encrypt-acme title="Permanent link">&para;</a></h2> <p>To get a certificate automatically via <a href=https://letsencrypt.org/ >Let's Encrypt</a>, set <code>tls.acme.hostname</code> to the desired certificate hostname. This name must resolve to the IP address(es) headscale is reachable on (i.e., it must correspond to the <code>server_url</code> configuration parameter). The certificate and Let's Encrypt account credentials will be stored in the directory configured in <code>tls.acme.cache_dir</code>. If the path is relative, it will be interpreted as relative to the directory the configuration file was read from.</p> <div class="language-yaml highlight"><span class=filename>config.yaml</span><pre><span></span><code><span id=__span-1-1><a id=__codelineno-1-1 name=__codelineno-1-1 href=#__codelineno-1-1></a><span class=nt>tls</span><span class=p>:</span>
+</span></code></pre></div> <p>The certificate should contain the full chain, else some clients, like the Tailscale Android client, will reject it.</p> <h3 id=reloading-the-certificate>Reloading the certificate<a class=headerlink href=#reloading-the-certificate title="Permanent link">&para;</a></h3> <p>Headscale reads the certificate and key again when it receives a SIGHUP signal, so a renewed certificate takes effect without a restart. Either reload Headscale via its systemd service (<code>sudo systemctl reload headscale</code>) or send the signal directly (<code>sudo kill -HUP $(pidof headscale)</code>). The same signal also <a href=../policy/ >reloads the policy</a>. New connections get the new certificate; open connections stay as they are.</p> <p>If the files cannot be loaded, or the certificate is expired or not yet valid, Headscale logs an error and keeps serving the previous certificate. <code>systemctl reload</code> reports success either way, because it only delivers the signal. Look for <code>TLS certificate reloaded</code> in the log, or <a href=#checking-certificate-expiry>check the served certificate</a>.</p> <h2 id=lets-encrypt-acme>Let's Encrypt / ACME<a class=headerlink href=#lets-encrypt-acme title="Permanent link">&para;</a></h2> <p>To get a certificate automatically via <a href=https://letsencrypt.org/ >Let's Encrypt</a>, set <code>tls.acme.hostname</code> to the desired certificate hostname. This name must resolve to the IP address(es) headscale is reachable on (i.e., it must correspond to the <code>server_url</code> configuration parameter). The certificate and Let's Encrypt account credentials will be stored in the directory configured in <code>tls.acme.cache_dir</code>. If the path is relative, it will be interpreted as relative to the directory the configuration file was read from.</p> <div class="language-yaml highlight"><span class=filename>config.yaml</span><pre><span></span><code><span id=__span-1-1><a id=__codelineno-1-1 name=__codelineno-1-1 href=#__codelineno-1-1></a><span class=nt>tls</span><span class=p>:</span>
 </span><span id=__span-1-2><a id=__codelineno-1-2 name=__codelineno-1-2 href=#__codelineno-1-2></a><span class=w>  </span><span class=nt>acme</span><span class=p>:</span>
 </span><span id=__span-1-3><a id=__codelineno-1-3 name=__codelineno-1-3 href=#__codelineno-1-3></a><span class=w>    </span><span class=nt>hostname</span><span class=p>:</span><span class=w> </span><span class=s>""</span>
 </span><span id=__span-1-4><a id=__codelineno-1-4 name=__codelineno-1-4 href=#__codelineno-1-4></a><span class=w>    </span><span class=nt>http_listen</span><span class=p>:</span><span class=w> </span><span class=s>":http"</span>