Looking at your host hyper-vhost1, it has the IP 10.x.x.11 assigned, is that the new IP or the old IP? Can you show a screenshot of the notification emails you're referring to as well? Now that we have your objects.cache it'll help to line things up.
Looking at 'carbackup1' I see this notification firing -
May 31 08:57:17 nagiosxi nagios: HOST NOTIFICATION: nagiosadmin;carbackup1.x.x;DOWN;xi_host_notification_handler;CRITICAL - 10.x.x.66: Host unreachable @ 10.x.x.10. rta nan, lost 100%
But, I don't see a corresponding host in your cache at all. Is this the one you were referring to? I did find 'carbackup14', but it doesn't appear to be the same one.
killed all but one of those processes. made a ccm change and applied. more nagios processes started during that so i killed the other old one as well. now have just the self-started new ones:
still seeing alerts on the operations screen for devices that have been removed from ccm, like the backup1. did notice that the notifications for that are going to a contact that doesnt exist.
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will check again in the morning to see if alerts have resolved themselves. thanks!
There will be child processes that started (which are ok), but if the PPID isn't equal to the PID for the single Nagios process that's when I'd be worried.
If you're still seeing issues in the morning, please post the output of ps -ef once again.
To be honest, it's hard to say. It could have been from a multitude of different things happening. Most of the time relating to a time when the nagios service would be stopped / started.
I've seen it happen in the past because the old process couldn't be killed for whatever reason, and then a new one spawns.