- Docker compose: ping_group_range sysctl, without which ping monitors
silently report DOWN in containers
- README: data retention table (1000 checks / 5000 state changes per
monitor, 200 logs, pruned automatically), group-alert limitation note
- config-as-code: apply is not atomic + re-run convergence, backup
redaction footgun (/api/backup/export redacts by default), opsgenie
example (provider count was stale at 9), ntfy auth keys
lerko
