Good morning
We have come across a very strange issue. We have 709 hosts that are placed in a host group. We then use the host group to perform 10 service checks on. What we see happening is, that as soon as the host count goes over the 450 mark, notifications for any services no longer works, but notifications for the host still does.
Is there some kind of limit that I am unaware of that you can shed some light on this to get it sorted.
Thank you for you help.
Some system stats:
Centos 7 Patched
MemTotal: 32770856 kB
Nagios Core 4.4.5
Object Config Source: Config files (uncached)
OBJECT CONFIG PROCESSING TIMES (* = Potential for precache savings with -u option)
----------------------------------
Read: 0.245358 sec
Resolve: 0.005150 sec *
Recomb Contactgroups: 0.000751 sec *
Recomb Hostgroups: 0.011950 sec *
Dup Services: 0.070955 sec *
Recomb Servicegroups: 0.031589 sec *
Duplicate: 0.000016 sec *
Inherit: 0.021004 sec *
Register: 0.643437 sec
Free: 0.010164 sec
============
TOTAL: 1.040377 sec * = 0.035355 sec (3.40%) estimated savings
Timing information on configuration verification is listed below.
CONFIG VERIFICATION TIMES
----------------------------------
Object Relationships: 0.021366 sec
Circular Paths: 0.000739 sec
Misc: 0.000616 sec
============
TOTAL: 0.022721 sec
RETENTION DATA TIMES
----------------------------------
Read and Process: 2.577103 sec
============
TOTAL: 2.577103 sec
EVENT SCHEDULING TIMES
-------------------------------------
Get service info: 0.595980 sec
Get host info info: 0.078644 sec
Get service params: 0.000016 sec
Schedule service times: 0.000002 sec
Schedule service events: 0.077317 sec
Get host params: 0.000002 sec
Schedule host times: 0.000586 sec
Schedule host events: 0.007500 sec
============
TOTAL: 0.760047 sec
Projected scheduling information for host and service checks
is listed below. This information assumes that you are going
to start running Nagios with your current config files.
HOST SCHEDULING INFORMATION
---------------------------
Total hosts: 4080
Total scheduled hosts: 0
Host inter-check delay method: SMART
Average host check interval: 0.00 sec
Host inter-check delay: 0.00 sec
Max host check spread: 30 min
First scheduled check: N/A
Last scheduled check: N/A
SERVICE SCHEDULING INFORMATION
-------------------------------
Total services: 34424
Total scheduled services: 0
Service inter-check delay method: SMART
Average service check interval: -nan sec
Inter-check delay: 0.00 sec
Interleave factor method: SMART
Average services per host: 8.44
Service interleave factor: 0
Max service check spread: 30 min
First scheduled check: Thu Jan 1 01:00:00 1970
Last scheduled check: Thu Jan 1 01:00:00 1970
CHECK PROCESSING INFORMATION
----------------------------
Average check execution time: 0.00s
Estimated concurrent checks: -nan (-nan per cpu core)
Max concurrent service checks: Unlimited
PERFORMANCE SUGGESTIONS
-----------------------
I have no suggestions - things look okay.