https://kohanyi.net/tags/server/Recent content in Server on Kohanyi NewsHugoen-us<a href="https://creativecommons.org/licenses/by-sa/4.0/" target="_blank" rel="noopener">CC BY-SA 4.0</a>Wed, 19 Aug 2026 10:00:00 +0000https://kohanyi.net/posts/2026/08/setting-up-serial-console-access-on-a-linux-server/Wed, 19 Aug 2026 10:00:00 +0000https://kohanyi.net/posts/2026/08/setting-up-serial-console-access-on-a-linux-server/<p>If your server has a virtual serial port &ndash; like HP iLO, Dell iDRAC, or any BMC that exposes a serial console over SSH &ndash; this gets you keyboard-in-the-face access before the network stack is even up.</p> <p>Useful for debugging boot issues, GRUB recovery, or just not having to walk to the machine room.</p> <hr> <h2 id="find-your-serial-port">Find your serial port</h2> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-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>sudo dmesg | grep tty </span></span></code></pre></div><p>Look for something like <code>ttyS0</code>, <code>ttyS1</code>, etc. On many systems:</p>