Nomad Agent Syslog Errors

[mpass99]

Regularly, we see multiple errors in the syslog of the Nomad runners. We should investigate and try to resolve them.

• Systemd
  • docker-XYZ.scope: Failed to set 'cpuset.cpus' attribute on '/system.slice/docker-XYZ.scope' to '': No space left on device
    • Can be triggered with a systemctl daemon-reload
• Dockerd
  • Your kernel does not support memory swappiness capabilities or the cgroup is not mounted. Memory swappiness discarded.
  • level=info msg="ignoring event" topic=/tasks/delete
• Nomad
  • After System Reboot:

agent.plugin_loader: skipping external plugins since plugin_dir doesn't exist: plugin_dir=/opt/nomad/data/plugins
[...]
client.fingerprint_mgr: failed to detect bridge kernel module, bridge network mode disabled:
error=
| 4 errors occurred:
| \t* failed to find /sys/module/bridge: stat /sys/module/bridge: no such file or directory
| \t* module bridge not in /proc/modules
| \t* module bridge not in /lib/modules/6.8.0-39-generic/modules.builtin
| \t* module bridge not in /lib/modules/6.8.0-39-generic/modules.dep