https://blog.jcea.es/esTue, 24 Mar 2026 14:02:02 GMTNikola (getnikola.com)http://blogs.law.harvard.edu/tech/rsshttps://blog.jcea.es/posts/20230823-ntp_systemd.htmlJesús Cea Avión<div><p>En entornos <a class="reference external" href="https://es.wikipedia.org/wiki/GNU/Linux">Linux</a> que utilicen <a class="reference external" href="https://es.wikipedia.org/wiki/Systemd">Systemd</a> es común que el protocolo <a class="reference external" href="https://es.wikipedia.org/wiki/Network_Time_Protocol">NTP</a> lo gestione <a class="reference external" href="https://es.wikipedia.org/wiki/Systemd">Systemd</a>, así que hay que aprender a plegarse al signo de los tiempos.</p> <p>Veamos cómo ver detalles de sincronización de tiempo con <a class="reference external" href="https://es.wikipedia.org/wiki/Systemd">Systemd</a>:</p> <pre class="code console"><a name="rest_code_9ca0ed906f9147f3824642d80527b014-1"></a><span class="gp">jcea@jcea:~$</span> timedatectl status <a name="rest_code_9ca0ed906f9147f3824642d80527b014-2"></a><span class="go"> Local time: mar 2023-08-22 15:44:17 CET</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-3"></a><span class="go"> Universal time: mar 2023-08-22 14:44:17 UTC</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-4"></a><span class="go"> RTC time: mar 2023-08-22 14:44:17</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-5"></a><span class="go"> Time zone: Europe/Madrid (CET, +0100)</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-6"></a><span class="go">System clock synchronized: yes</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-7"></a><span class="go"> NTP service: active</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-8"></a><span class="go"> RTC in local TZ: no</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-9"></a> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-10"></a><span class="gp">jcea@jcea:~$</span> timedatectl timesync-status <a name="rest_code_9ca0ed906f9147f3824642d80527b014-11"></a><span class="go"> Server: 2620:2d:4000:1::41 (ntp.ubuntu.com)</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-12"></a><span class="go">Poll interval: 34min 8s (min: 32s; max 34min 8s)</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-13"></a><span class="go"> Leap: normal</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-14"></a><span class="go"> Version: 4</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-15"></a><span class="go"> Stratum: 2</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-16"></a><span class="go"> Reference: 4FF33C32</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-17"></a><span class="go"> Precision: 1us (-25)</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-18"></a><span class="go">Root distance: 785us (max: 5s)</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-19"></a><span class="go"> Offset: -48.589ms</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-20"></a><span class="go"> Delay: 31.949ms</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-21"></a><span class="go"> Jitter: 20.555ms</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-22"></a><span class="go"> Packet count: 40</span> <a name="rest_code_9ca0ed906f9147f3824642d80527b014-23"></a><span class="go"> Frequency: +16,668ppm</span> </pre></div>NTPSistemas OperativosSystemdhttps://blog.jcea.es/posts/20230823-ntp_systemd.htmlWed, 23 Aug 2023 11:38:00 GMT