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<h1 id="installing-older-versions-of-mongodb-on-arch-linux">Installing Older Versions of MongoDB on Arch Linux</h1>
<p>2023-09-11</p>
<p>I&#8217;ve recently been using Arch Linux for my main work environment on my ThinkPad X260. It&#8217;s been great. As someone who is constantly drawn to minimalist operating systems such as Alpine or OpenBSD, it&#8217;s nice to use something like Arch that boasts that same minimalist approach but with greater documentation&#47;support.</p>
<p>Another major reason for the switch was the need to run older versions of &#8220;services&#8221; locally. Most people would simply suggest using Docker or vmm, but I personally run projects in self-contained, personalized directories on my system itself. I am aware of the irony in that statement&#8230; but that&#8217;s just my personal preference.</p>
<p>So I thought I would share my process of setting up an older version of MongoDB (3.4 to be precise) on Arch Linux.</p>
<h2 id="aur-to-the-rescue">AUR to the Rescue</h2>
<p>You will need to target the specific version of MongoDB using the very awesome AUR packages:</p>
<pre><code>yay -S mongodb34-bin
</code></pre>
<p>Follow the instructions and you&#8217;ll be good to go. Don&#8217;t forget to create the <code>&#47;data&#47;db</code> directory and give it proper permissions:</p>
<pre><code>mkdir -p &#47;data&#47;db&#47;
chmod -R 777 &#47;date&#47;db
</code></pre>
<h2 id="what-about-my-tools">What About My &#8220;Tools&#8221;?</h2>
<p>If you plan to use MongoDB, then you most likely want to utilize the core database tools (restore, dump, etc). The problem is you can&#8217;t use the default <code>mongodb-tools</code> package when trying to work with older versions of MongoDB itself. The package will complain about conflicts and ask you to override your existing version. This is <em>not</em> what we want.</p>
<p>So, you&#8217;ll have to build from source locally:</p>
<pre><code>git clone https:&#47;&#47;github.com&#47;mongodb&#47;mongo-tools
cd mongodb-tools
.&#47;make build
</code></pre>
<p>Then you&#8217;ll need to copy the built executables into the proper directory in order to use them from the terminal:</p>
<pre><code>cp bin&#47;* &#47;usr&#47;local&#47;bin&#47;
</code></pre>
<p>And that&#8217;s it! Now you can run <code>mongod</code> directly or use <code>systemctl</code> to enable it by default. Hopefully this helps anyone else curious about running older (or even outdated!) versions of MongoDB.</p>
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