Safe systemd overrides without editing vendor units
Use drop-ins, inspect the merged unit and keep rollback close at hand.
Read the note →Independent technical reference
Small systems deserve
careful operations.
Field notes for people who run Linux services without a large platform team: clear defaults, observable changes and recovery plans that have actually been rehearsed.
Recently revised
Working notes
Short references, reviewed when tools or behaviour change.
A practical cache-control checklist
Match browser and intermediary caching to the way each asset changes.
Read the note →Backups are evidence, not assurance
A compact restore drill for catching silent failures before an incident.
Read the note →Editorial principles
Useful under pressure
- 01
State the boundary
Every note says what it covers and what it deliberately leaves out.
- 02
Prefer reversible changes
Back up the current state, validate new configuration, then switch.
- 03
Test recovery
A green backup job is not the same thing as a successful restore.