I have a simple example of a service unit and bash script on rhel7 using Type=notify that I was trying to get working. When the service unit is configured to start the script as root things work as expected. When adding User=testuser it fails. While the script initially starts (as seen on process list), Journalct -xe reports many lines like the following and the service eventually timesout. I am not even clear what these referenced PIDs are associated with as they don't exist in the process list.
Jul 15 13:37:25 tstcs03.ingdev systemd[1]: Cannot find unit for notify message of PID 7193. Jul 15 13:37:28 tstcs03.ingdev systemd[1]: Cannot find unit for notify message of PID 7290. Jul 15 13:37:31 tstcs03.ingdev systemd[1]: Cannot find unit for notify message of PID 7388. Jul 15 13:37:34 tstcs03.ingdev systemd[1]: Cannot find unit for notify message of PID 7480. [Unit] Description=My Test [Service] Type=notify User=testuser ExecStart=/home/iatf/test.sh [Install] WantedBy=multi-user.target Test.sh (owned by testuser with execute permission) #!/bin/bash systemd-notify --status="Starting..." sleep 5 systemd-notify --ready --status="Started" while [ 1 ] ; do systemd-notify --status="Processing..." sleep 3 systemd-notify --status="Waiting..." sleep 3 done
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