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<h1>Update</h1>
<h2 id="automatic-update">Automatic update<a class="headerlink" href="#automatic-update" title="Permanent link">&para;</a></h2>
<p>An update script in your mailcow-dockerized directory will take care of updates.</p>
<p>But use it with caution! If you think you made a lot of changes to the mailcow code, you should use the manual update guide below.</p>
<p>Run the update script:
<div class="highlight"><pre><span></span><code>./update.sh
</code></pre></div></p>
<p>If it needs to, it will ask you how you wish to proceed.
Merge errors will be reported.
Some minor conflicts will be auto-corrected (in favour for the mailcow: dockerized repository code).</p>
<h3 id="options">Options<a class="headerlink" href="#options" title="Permanent link">&para;</a></h3>
<div class="highlight"><pre><span></span><code># Options can be combined
# - Check for updates and show changes
./update.sh --check
# Do not try to update docker-compose, **make sure to use the latest docker-compose available**
./update.sh --no-update-compose
# - Do not start mailcow after applying an update
./update.sh --skip-start
# - Force update (unattended, but unsupported, use at own risk)
./update.sh --force
# - Run garbage collector to cleanup old image tags and exit
./update.sh --gc
# - Update with merge strategy option &quot;ours&quot; instead of &quot;theirs&quot;
# This will **solve conflicts** when merging in favor for your local changes and should be avoided. Local changes will always be kept, unless we changed file XY, too.
./update.sh --ours
# - Don&#39;t update, but prefetch images and exit
./update.sh --prefetch
</code></pre></div>
<h3 id="i-forgot-what-i-changed-before-running-updatesh">I forgot what I changed before running update.sh<a class="headerlink" href="#i-forgot-what-i-changed-before-running-updatesh" title="Permanent link">&para;</a></h3>
<p>See <code>git log --pretty=oneline | grep -i "before update"</code>, you will have an output similar to this:</p>
<div class="highlight"><pre><span></span><code>22cd00b5e28893ef9ddef3c2b5436453cc5223ab Before update on 2020-09-28_19_25_45
dacd4fb9b51e9e1c8a37d84485b92ffaf6c59353 Before update on 2020-08-07_13_31_31
</code></pre></div>
<p>Run <code>git diff 22cd00b5e28893ef9ddef3c2b5436453cc5223ab</code> to see what changed.</p>
<h3 id="can-i-roll-back">Can I roll back?<a class="headerlink" href="#can-i-roll-back" title="Permanent link">&para;</a></h3>
<p>Yes.</p>
<p>See the topic above, instead of a diff, you run checkout:</p>
<div class="highlight"><pre><span></span><code>docker-compose down
# Replace commit ID 22cd00b5e28893ef9ddef3c2b5436453cc5223ab by your ID
git checkout 22cd00b5e28893ef9ddef3c2b5436453cc5223ab
docker-compose pull
docker-compose up -d
</code></pre></div>
<h3 id="hooks">Hooks<a class="headerlink" href="#hooks" title="Permanent link">&para;</a></h3>
<p>You can hook into the update mechanism by adding scripts called <code>pre_commit_hook.sh</code> and <code>post_commit_hook.sh</code> to your mailcows root directory. See <a href="../u_e-update-hooks/">this</a> for more details.</p>
<h2 id="footnotes">Footnotes<a class="headerlink" href="#footnotes" title="Permanent link">&para;</a></h2>
<ul>
<li>There is no release cycle regarding updates.</li>
</ul>
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