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diff --git a/health/guides/systemdunits/systemd_path_unit_failed_state.md b/health/guides/systemdunits/systemd_path_unit_failed_state.md new file mode 100644 index 000000000..9a4749b6d --- /dev/null +++ b/health/guides/systemdunits/systemd_path_unit_failed_state.md @@ -0,0 +1,61 @@ +### Understand the alert + +This alert is triggered when a `systemd path unit` enters a `failed state`. Service units in a failed state indicate an issue with the service's startup, runtime, or shutdown, which can result in the service being marked as failed. + +### What is a systemd path unit? + +`systemd` is an init system and system manager that manages services and their dependencies on Linux systems. A `path unit` is a type of unit configuration file that runs a service in response to the existence or modification of files and directories. These units are used to monitor files and directories and trigger actions based on changes to them. + +### Troubleshoot the alert + +1. Identify the failed systemd path unit + +First, you need to identify which path unit is experiencing issues. To list all failed units: + + ``` + systemctl --state=failed + ``` + +Take note of the units indicated as 'path' in the output. + +2. Inspect the path unit status + +To get more details about the specific failed path unit, run: + + ``` + systemctl status <failed-path-unit> + ``` + +Replace `<failed-path-unit>` with the name of the failed path unit you identified previously. + +3. Review logs for the failed path unit + +To view the logs for the failed path unit, use the `journalctl` command: + + ``` + journalctl -u <failed-path-unit> + ``` + +Again, replace `<failed-path-unit>` with the name of the failed path unit. Review the logs to identify possible reasons for the failure. + +4. Reload the unit configuration (if necessary) + +If you discovered an issue in the unit configuration file and resolved it, reload the configuration by running: + + ``` + sudo systemctl daemon-reload + ``` + +5. Restart the failed path unit + +Once you have identified and resolved the issue causing the failed state, try to restart the path unit: + + ``` + sudo systemctl restart <failed-path-unit> + ``` + +Replace `<failed-path-unit>` with the name of the failed path unit. Then, monitor the path unit status to ensure it is running without issues. + +### Useful resources + +1. [Introduction to Systemd Units and Unit Files](https://www.digitalocean.com/community/tutorials/understanding-systemd-units-and-unit-files) |