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#monitoring

4 one-liners with this tag.

All one-liners tagged monitoring

Check whether a certificate expires within the next days

#openssl x509 -in /etc/letsencrypt/live/example.com/cert.pem -noout -checkend $(( 30 * 86400 )) && echo "noch gültig" || echo "läuft bald ab"
harmlessSSL and certificates

Find unhealthy Docker containers

#docker ps --filter health=unhealthy
harmlessDocker

Query uptime, memory and restart count of a service

$systemctl show php8.2-fpm -p ActiveState,ActiveEnterTimestamp,MainPID,MemoryCurrent,NRestarts
harmlesssystemd

Show CrowdSec metrics for logs, parsers and bouncers

#cscli metrics
harmlessFirewall

Read first, then run.

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  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
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