Last Updated on 2023-02-09

KB00018: Preventing accidental shutdowns

EVA ICS versions: 3.4.2 and 3.x above


Sometimes EVA ICS processes might be shut down by accident or due to a failure of the OS startup system.


To prevent such behavior on production mission-critical systems, enable an additional watchdog with system cron daemon (edit /etc/crontab file):

*/1 * * * * root  /opt/eva/sbin/


The feature is available in EVA ICS 3.4.2 and above, starting from the build 2023020903

The above watchdog script does the following:

  • checks EVA ICS registry state and restarts it if not available

  • checks enabled components and restarts them if they are not running

The watchdog script aborts checks if:

  • the system uptime is less than 600 seconds (10 minutes)

  • there is another copy of the watchdog script running


To prevent conflicts, the watchdog script must be disabled in the system cron during updates or manual maintenance.