- cmd_check_alert received many updates, for example, you can run separate configs with different frequency in the cron
- The following universal checks for linux are described and added to the template:
- CPU usage 90%/95%
- memory usage 80%/90%
- swap usage 70%/80%
- swap usage 1024mb/2048mb in absolute values
- free netfilter conntrack slots
- firewall openness to the whole world except ports 80, 443
- mounted all drives from /etc/fstab
- status of smart disks (previously sent to the mail, now also in monitoring)
- software raid status (previously received by mail, now also in monitoring)
- the presence of uninstalled updates that have an impact on security (according to cvescan for ubuntu and yum database for centos)
