by KayesPotrinak » Mon Mar 06, 2023 11:48 pm
It sounds like the upgrade process from Nagios Core 4.4.5 to 4.4.10 may have caused some issues with your hosts and host groups disappearing after a server reboot. There are a few things you can try to fix this:
Check the Nagios Core configuration files: Make sure that the configuration files for your hosts and host groups are still present and have not been modified during the upgrade process.
Restart the Nagios Core service: Try restarting the Nagios Core service to see if this resolves the issue. You can do this by running the command "sudo service nagios restart" in the terminal.
Check Nagios Core logs: Check the Nagios Core logs for any error messages that may be related to the issue. The logs are usually located in the /var/log/nagios directory.
Rebuild your hosts and host groups: If none of the above steps work, you may need to rebuild your hosts and host groups from scratch. This can be done by manually adding them back into the Nagios Core configuration files.
It's important to take precautions before making any changes to the Nagios Core configuration files to avoid any further issues. You may want to create backups of the configuration files before attempting any fixes.