'Disable notifications for this host' option only preventing DOWN notifications

[michaeljgoodman]

I have a standard Nagios Core setup on Rocky Linux with a very minimal config. I have a custom command setup to send emails via sendgrid. This is what I use for my notifications.

Steps to reproduce:

• Setup Nagios Core with default config files
• Add hosts
• Add notification method
• Change the state of a host
• Confirm receipt of notification
• Select a host in the 'Hosts' page
• Select 'Disable notifications for this host'
• Wait a moment
• Icon appears next to host in 'Hosts' list to indicate notifications are disabled
• Change the same host's state again

Expected behaviour:

• I receive notifications initially
• After selecting 'Disable notifications for this host' and confirming that the icon is present, I would not expect to see any notifications for that host

Observed behaviour:

• I receive UP and DOWN notifications as I change the state of the host initially
• After choosing 'Disable notifications for this host', I still receive "Nagios Alert: systemname is UP" notifications whenever a system comes back online after being previously down.
• If the host goes up and down multiple times, I will receive only UP notifications each time it comes back up

I have tested:

• Also disabling service notifications
• Also disabling child host notifications
• Killing all http and worker processes, deleting my retention file, and restarting Nagios
• Rebuilding Nagios from scratch and reintroducing my config files

System version:
Nagios® Core™
Version 4.4.13
June 01, 2023

OS:
Rocky Linux 8
Linux localhost.localdomain 4.18.0-477.13.1.el8_8.x86_64 #_1 SMP Tue May 30 22:15:39 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

[sawolf]

Hi Michael, thanks for reaching out. I suspect that receiving recovery notifications for an already-DOWN host is expected (there are other parts of the system that expect recovery notifications to match non-OK notifications one-to-one), but I agree that receiving multiple recovery notifications is wrong. I'll try to look into this soon.

[michaeljgoodman]

Thanks for getting back. Yes I'd expect at most for there to be an accompanying "Host UP" notification paired with "Host DOWN" notifications that occurred before the user disables notifications for a host.

But after that disable option has been selected, I'd expect all notifications to cease, regardless of type.

[tsadpbb]

Could you provide some more specifics on the configurations you did? I was not able to replicate this issue on Rocky Linux 8. When I disabled notifications, I did not receive any notifications, even if the host was switching between up and down.