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<h2>Backing up nixos state with restic</h2>
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<p>February 16, 2026</p>
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</header><p>I&rsquo;m writing this so I can hopefully remember what I did in six months.</p>
<p>As hard as you try to eliminate all state from your computing life with nixos, the fact remains that you can&rsquo;t get rid of all of it.
For example, I run forgejo on my VPS.
Now I have my config which means I could set up a forgejo instance just how I like it if everything went to pot.
But that wouldn&rsquo;t bring back any of the repos I had there previously.</p>
<p>This is the method I cooked up for backing up some of those important bits and bob on my VPS.</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-nix" data-lang="nix"><span class="line"><span class="cl"><span class="p">{</span> <span class="n">config</span><span class="o">,</span> <span class="o">...</span> <span class="p">}:</span> <span class="p">{</span>
</span></span><span class="line"><span class="cl"> <span class="n">services</span><span class="o">.</span><span class="n">restic</span> <span class="o">=</span> <span class="p">{</span>
</span></span><span class="line"><span class="cl"> <span class="n">backups</span><span class="o">.</span><span class="s2">&#34;hetzner-storage-box&#34;</span> <span class="o">=</span> <span class="p">{</span>
</span></span><span class="line"><span class="cl"> <span class="n">initialize</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span>
</span></span><span class="line"><span class="cl"> <span class="n">user</span> <span class="o">=</span> <span class="s2">&#34;root&#34;</span><span class="p">;</span>
</span></span><span class="line"><span class="cl"> <span class="n">passwordFile</span> <span class="o">=</span> <span class="s2">&#34;/etc/nixos/secrets/restic&#34;</span><span class="p">;</span>
</span></span><span class="line"><span class="cl"> <span class="n">paths</span> <span class="o">=</span> <span class="p">[</span>
</span></span><span class="line"><span class="cl"> <span class="s2">&#34;</span><span class="si">${</span><span class="n">config</span><span class="o">.</span><span class="n">services</span><span class="o">.</span><span class="n">forgejo</span><span class="o">.</span><span class="n">stateDir</span><span class="si">}</span><span class="s2">&#34;</span>
</span></span><span class="line"><span class="cl"> <span class="p">];</span>
</span></span><span class="line"><span class="cl"> <span class="n">repository</span> <span class="o">=</span> <span class="s2">&#34;sftp:user@storagebox:/remotelab&#34;</span><span class="p">;</span>
</span></span><span class="line"><span class="cl"> <span class="n">extraOptions</span> <span class="o">=</span> <span class="p">[</span>
</span></span><span class="line"><span class="cl"> <span class="s2">&#34;sftp.command=&#39;ssh user@storagebox -i /root/.ssh/id_ed25519 -s sftp&#39;&#34;</span>
</span></span><span class="line"><span class="cl"> <span class="p">];</span>
</span></span><span class="line"><span class="cl"> <span class="n">timerConfig</span> <span class="o">=</span> <span class="p">{</span>
</span></span><span class="line"><span class="cl"> <span class="n">OnCalendar</span> <span class="o">=</span> <span class="s2">&#34;daily&#34;</span><span class="p">;</span>
</span></span><span class="line"><span class="cl"> <span class="n">Persistent</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span>
</span></span><span class="line"><span class="cl"> <span class="p">};</span>
</span></span><span class="line"><span class="cl"> <span class="p">};</span>
</span></span><span class="line"><span class="cl"> <span class="p">};</span>
</span></span><span class="line"><span class="cl"><span class="p">}</span>
</span></span></code></pre></div></article>
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