Deleted host records not reflected on Nagios

[PaulS]

For all support requests, we need to know:
1.Linux Distribution and version?
CentOS release 6.9 (Final)

2.32 or 64bit?
x86_64

3.VMware Image or Manual Install of XI?
VMware Image

4.Are there special configurations on your system, ie; is Gnome installed? Are you using a proxy? Are you using SSL?
No special configurations

Issue:
Deleted host records not reflected on Nagios, we are still getting alerts for deleted hosts.

For example:

Following hosts were deleted from Core Configuration Manager > Hosts, but we are still getting Nagios alerts for these hosts.
AMLV7-HYPPLNP1
AMLV7-HYPESBP1

No host records was found on nagios databases:
mysql> use nagios;
Database changed
mysql> select * from nagios_hosts where alias like "AMLV7-HYP%";
Empty set (0.00 sec)

mysql> select * from nagios_hosts where display_name like "AMLV7-HYP%";
Empty set (0.00 sec)

mysql>


mysql> use nagiosql;
Database changed
mysql> select * from tbl_host where host_name like "AMLV7-HYP%";
Empty set (0.00 sec)

mysql>

But we are still getting Nagios alerts for the deleted hosts:

***** Nagios XI Alert *****

Nagios has detected a problem with this host.

Notification Type: PROBLEM
Host: AMLV7-HYPPLNP1
State: DOWN
Address: xxx.xxx.xxx.xxx
Info: CRITICAL - xxx.xxx.xxx.xxx: rta nan, lost 100%
Date/Time: 2018-07-26 05:39:37


***** Nagios XI Alert *****

Nagios has detected a problem with this host.

Notification Type: PROBLEM
Host: amlv7-hypfsd1
State: DOWN
Address: xxx.xxx.xxx.xxx
Info: CRITICAL - xxx.xxx.xxx.xxx: rta nan, lost 100%
Date/Time: 2018-07-26 05:40:28

Please assists.

Thank you.

[rexconsulting]

I've seen this before with multiple nagios daemons running.

Run this command:

Code: Select all

ps -ef|grep 'nagios -d'|grep -v grep

Do you have more than one nagios daemon running? Note you should see two processes, one the child of the other, but you should not see more than two.

[scottwilkerson]

Multiple parents would be my suspicion as well

Code: Select all

service nagios stop
killall-9 nagios
service nagios start

[PaulS]

Hi,

There are only 2 Nagios processes running:

[root@AMCON-NAGIOSP1 ~]# ps -ef|grep 'nagios -d'|grep -v grep
nagios 16373 1 0 Jul26 ? 00:06:48 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios 16412 16373 0 Jul26 ? 00:00:05 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
[root@AMCON-NAGIOSP1 ~]#

We have tried reset the Nagios and rebooted the server, but still no luck.

Thank you.

[scottwilkerson]

Please open a ticket in the Support Center
https://support.nagios.com/tickets/

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