Systemd tips and tricks: Difference between revisions
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== How to permanently disable EEE (Energy Efficient Ethernet) on network card == | |||
'''Energy-Efficient Ethernet''' ('''EEE''') is a set of enhancements<ref>https://en.wikipedia.org/wiki/Energy-Efficient_Ethernet</ref>. To disable EEE on network card we can use systemd service unit to run the ethtool command (e.g. /etc/systemd/system/disable-eee.service<ref>https://unix.stackexchange.com/questions/729508/how-to-permanently-disable-eee-energy-efficient-ethernet-on-ethernet-card</ref> )<syntaxhighlight lang="bash"> | |||
/etc/systemd/system/disable-eee.service | |||
Description=HM disable eee on NIC | |||
Before=network-pre.target | |||
Wants=network-pre.target | |||
[Service] | |||
Type=oneshot | |||
RemainAfterExit=true | |||
ExecStartPre=/usr/sbin/ethtool --set-eee eno1 eee off | |||
ExecStart=/usr/sbin/ethtool --set-eee eno2 eee off | |||
[Install] | |||
WantedBy=multi-user.target | |||
</syntaxhighlight> | |||
== How to read live-tail logs of multiple services with journalctl == | == How to read live-tail logs of multiple services with journalctl == | ||
#Systemd - How to read live-tail logs of multiple services with journalctl<ref>https://gist.github.com/MrAndrewMal/764e69e35cef7e7b38f05e561d670c9f</ref> | #Systemd - How to read live-tail logs of multiple services with journalctl<ref>https://gist.github.com/MrAndrewMal/764e69e35cef7e7b38f05e561d670c9f</ref> | ||
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== Ensure the mount path is accessible before the service == | == Ensure the mount path is accessible before the service == | ||
<[Unit] | <[Unit] | ||
RequiresMountsFor=<path required | RequiresMountsFor=<path required> | ||
This will ensure the path is accessible before starting the service and also will mount it if it's not already (unless it has noauto specified). | This will ensure the path is accessible before starting the service and also will mount it if it's not already (unless it has noauto specified). | ||
== Reference == | == Reference == | ||
<references /> | <references /> | ||
Revision as of 11:05, 4 January 2024
How to permanently disable EEE (Energy Efficient Ethernet) on network card
Energy-Efficient Ethernet (EEE) is a set of enhancements[1]. To disable EEE on network card we can use systemd service unit to run the ethtool command (e.g. /etc/systemd/system/disable-eee.service[2] )
/etc/systemd/system/disable-eee.service
Description=HM disable eee on NIC
Before=network-pre.target
Wants=network-pre.target
[Service]
Type=oneshot
RemainAfterExit=true
ExecStartPre=/usr/sbin/ethtool --set-eee eno1 eee off
ExecStart=/usr/sbin/ethtool --set-eee eno2 eee off
[Install]
WantedBy=multi-user.target
How to read live-tail logs of multiple services with journalctl
#Systemd - How to read live-tail logs of multiple services with journalctl[3] $sudo journalctl --follow _SYSTEMD_UNIT=docker.service + _SYSTEMD_UNIT=apache2.service
Ensure the mount path is accessible before the service
<[Unit] RequiresMountsFor=<path required>
This will ensure the path is accessible before starting the service and also will mount it if it's not already (unless it has noauto specified).