https://www.xga.ie/tags/database/Recent content in Database on XGAHugoen-gbWed, 02 Sep 2026 00:00:00 +0000https://www.xga.ie/posts/zabbix-unattended-upgrade-db-error/Wed, 02 Sep 2026 00:00:00 +0000https://www.xga.ie/posts/zabbix-unattended-upgrade-db-error/<p>I have experienced two Zabbix Server outages this week after unattended-upgrades on our Linux monitoring stack.</p> <h2 id="the-problem"> The problem <a class="heading-link" href="#the-problem"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h2> <p>During an unattended upgrade, <code>needrestart</code> attempted to restart a number of services - including MySQL and Zabbix Server:</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#282a36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>Running kernel seems to be up-to-date. </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span>Restarting services... </span></span><span style="display:flex;"><span> /etc/needrestart/restart.d/systemd-manager </span></span><span style="display:flex;"><span> systemctl restart ... mysql.service ... zabbix-server.service </span></span></code></pre></div><p>Though Zabbix Server seems to hang when MySQL isn&rsquo;t available to it:</p>