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diff --git a/health/guides/systemdunits/systemd_target_unit_failed_state.md b/health/guides/systemdunits/systemd_target_unit_failed_state.md new file mode 100644 index 000000000..843405147 --- /dev/null +++ b/health/guides/systemdunits/systemd_target_unit_failed_state.md @@ -0,0 +1,52 @@ +### Understand the alert + +The `systemd_target_unit_failed_state` alert is triggered when a `systemd` target unit goes into a failed state. Systemd is the system and service manager for Linux, and target units are groups of systemd units that are organized for a specific purpose. If this alert is triggered, it means there is an issue with one of your systemd target units. + +### What does failed state mean? + +A systemd target unit in the failed state means that one or more units/tasks of that target, whether it's a service, or any other kind of systemd unit, have encountered an issue and cannot continue running. + +### Troubleshoot the alert + +1. First, you need to identify which systemd target unit is causing the alert. You can list all the failed units by running: + + ``` + systemctl --failed --all + ``` + +2. Once you have identified the problematic target unit, check its status for more information about the issue. Replace `<target_unit>` with the actual target unit name: + + ``` + systemctl status <target_unit> + ``` + +3. Look at the logs of the failed target unit to collect more details on the issue: + + ``` + journalctl -u <target_unit> + ``` + +4. Based on the information gathered in steps 2 and 3, troubleshoot and fix the problem(s) in your target unit. This may involve: + - Editing the unit file + - Checking the services and processes that compose the target + - Looking into configuration files and directories. + +5. Reload the systemctl daemon to apply any changes you made, then restart the target unit: + + ``` + sudo systemctl daemon-reload + sudo systemctl restart <target_unit> + ``` + +6. Verify that the target unit has been successfully restarted: + + ``` + systemctl is-active <target_unit> + ``` + +7. Continue monitoring the target unit to ensure that it remains stable and does not return to a failed state. + +### Useful resources + +1. [systemd man pages (targets)](https://www.freedesktop.org/software/systemd/man/systemd.target.html) +2. [systemd Targets - ArchWiki](https://wiki.archlinux.org/title/Systemd#Targets) |