Question

Graphics partially work

  • 18 April 2024
  • 7 replies
  • 42 views
I
Badge +1

Hello,

 

I configured a fresh install of Centreon version 23.10.6 few months ago and I'm experiencing a strange problem with the service graphs.
Some of them stop filling up after a random time but information collected are still correct, only the graph is impacted. SNMP v2c and v3 with a snmp user have been configured and tested on Windows and Linux to contact monitored servers. This happens randomly on Windows or Linux, sometimes in the same subnet (so not a firewall issue), sometimes not, and randomly on SNMP v2 or v3. On the same monitored host, not all services are impacted.

When I restart the poller, graphics works for about 1 or 2 hours, then stop filling up.
Does anyone have any ideas?

Thank you in advance,
Regards.

7 replies

Laurent
Rank
Userlevel 6
Badge +18

HI @itadmin so the monitoring of the resources in sNMPv2/v3 are ok (no UNKNOWN status) but associated graph stop randomly some times?

Can you check if you have enougth space on the file system where are stored the graph: /var/lib/centreon/metrics?

Do you have error in /var/log/centreon-broker/central-rrd-master.log on the central server?

I
Badge +1

Hello,

 

Thank you for your reply.

Exactly, they stop working randomly as in this picture on the last day

Disk space is ok on the VM.
After restarting the poller I have this error:

I though it was maybe a permission issue on the folder but I think it seems ok:
 

The file above does not exist in this folder.

Thank you in advance,
Regards

Laurent
Rank
Userlevel 6
Badge +18

Do you use rrdcached?

Do you have only one cbd process managing RRD?

# ps aux | grep cbd
centreo+   156  2.5  0.7 1080192 31580 ?  Sl Apr21  31:12 /usr/sbin/cbd /etc/centreon-broker/central-broker.json
centreo+   157  1.7  0.8 946508 32940 ?  Sl  Apr21  21:16 /usr/sbin/cbd /etc/centreon-broker/central-rrd.json

 

I
Badge +1

I don’t have configured anything regarding the rrdcached with this installation, so I don’t know (and I don’t have configure it on previous centreon installations). I followed official documentation for the installation


Only one process for the RRD:

# ps aux | grep cbd
centreo+     873  0.3  0.4 943592 37536 ?        Sl   09:52   0:22 /usr/sbin/cbd /etc/centreon-broker/central-broker.json
centreo+     874  0.2  0.3 835740 30188 ?        Sl   09:52   0:15 /usr/sbin/cbd /etc/centreon-broker/central-rrd.json

 

Laurent
Rank
Userlevel 6
Badge +18

Can you go to “Monitoring > Performance > Graph”, select you service and display graph for last 7 days and make a print screen?

I
Badge +1

Of course:
 

 

Laurent
Rank
Userlevel 6
Badge +18

As you can see, most of times the status of this service is UNKNOWN. So if you look in /var/log/centreon-engine/centengine.log, you will see UNKNOWN logs for this service.

It is most a SNMP stability issue on your resource/network than a problem on Centreon.

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