Critical systemd Units Need Their Own Health Signal
Container monitoring does not cover host services such as Docker, networking, tunnels, backup timers or other systemd-managed dependencies.
systemd
systemd Logs Became Part of My VoIP Troubleshooting
Service state, bind failures and restart loops often explained a broken PBX before I needed to inspect a single SIP packet.
Backup Job Exit Status Belongs in Prometheus
A systemd timer can fire on schedule while the backup service itself fails, times out or exits before producing a valid set.
Backup Journals Make Failed Automation Debuggable
A red backup alert identifies the outcome but usually does not explain which command, mount or permission caused the failure.
KillMode Matters When a Backup Script Spawns Child Processes
Stopping only the shell does not necessarily stop pg_dump, tar or helper processes that the shell launched.
Backup Jobs Need a Maximum Runtime
A backup that hangs forever can block future runs and create false confidence without ever producing a usable recovery point.