Nagios Support Forum

Posted: **Tue May 07, 2024 1:43 pm**

OS : Red Hat Enterprise Linux 7.9
Os was not upgraded recently . There was no patches or upgrade done on nagios recently
all database are ok

We are facing an urgent issue as our monitoring engine just stopped working and wont start or will stop after starting with the following logs

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[1715106052] NDO-3: Started event_handler thread
[1715106052] NDO-3: Started service_check thread
[1715106052] NDO-3: Started host_check thread
[1715106052] NDO-3: Started timed_event thread
[1715106052] NDO-3: Started comment thread
[1715106052] NDO-3: Started downtime thread
[1715106052] NDO-3: Started flapping thread
[1715106052] NDO-3: Started service_status thread
[1715106052] NDO-3: Started host_status thread
[1715106052] NDO-3: Started contact_status thread
[1715106052] NDO-3: Started acknowledgement thread
[1715106052] NDO-3: Started statechange thread
[1715106052] NDO-3: Started notification thread
[1715106053] NDO-3: Ended contact_status thread
[1715106055] NDO-3: Ended host_check thread
[1715106055] NDO-3: Ended host_status thread
[1715106088] NDO-3: Ended service_check thread
[1715106088] NDO-3: Ended statechange thread
[1715106088] NDO-3: Ended acknowledgement thread
[1715106088] NDO-3: Ended timed_event thread
[1715106088] NDO-3: Ended notification thread
[1715106088] NDO-3: Ended flapping thread
[1715106088] NDO-3: Ended event_handler thread
[1715106097] NDO-3: Ended service_status thread
[1715106117] NDO-3: Ended downtime thread
[1715106431] NDO-3: Ended comment thread

Posted: **Tue May 07, 2024 6:32 pm**

We have updated to newest version and its still does not fix the issue .
There is no pid showing in nagios xi ui and nagios core ui but i clearly see the process running

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[root@olexpnagiosp01 nagiosxi]# ps -ef |grep -i "2536"
nagios     2536      1 84 19:26 ?        00:05:10 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios     2538   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2539   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2540   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2541   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2542   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2543   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2544   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2545   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2546   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2547   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2548   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios     2549   2536  0 19:26 ?        00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh

Posted: **Tue May 07, 2024 7:55 pm**

Check the status output for the service and the logs.

Posted: **Thu May 09, 2024 10:52 am**

its started back and after a config change it went down again .

@kg2857

i can share some logs from today as it went down at 10:23 am

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