systemctl daemon-reload drops monitor for PID file and results in failure of starting the service unit due to timeout · Issue #11574 · systemd/systemd · GitHub
Monitoring and alerting of processes/services in Prometheus | by Souvik Haldar | Kartbites | Medium
How to use the systemctl command to manage Systemd services
Issue with privileges (gsad, gvmd) - "Can't open PID file /run/..." - How To - Greenbone Community Forum
boot failure: systemctl status system-fsck-root.service - vConsultants blog
systemctl stop` leaves .PID file behind when daemon is not running · Issue #13 · gdraheim/docker-systemctl-replacement · GitHub
How to create a systemd service in 2 easy steps. - Knoldus Blogs
Find the systemd Unit that Owns a Process | Thomas Stringer
Setup a Linux Service with Child Processes | by Joe Bologna | Medium
An Ultimate Guide of How to Manage Linux Systemd Services With Systemctl Command - Cherry Servers