Help with pnp4nagios graph

[nagmoto]

Hi,

We have few servers for which check_uptime graph is working and for few servers it is not working. When i looked at the perfdata i see this error message and i am really not sure what is error here:

Perfdata Log:
2015-02-03 13:45:55 [26218] [0] RRDs::update /var/lib/pnp4nagios/test.example.com/check_uptime_1A.rrd 1422992755:1
2015-02-03 13:45:55 [26218] [0] RRDs::update ERROR /var/lib/pnp4nagios/test.example.com/check_uptime_1A.rrd: expected 2 data source readings (got 2) from 1422992755

I have attached 2 graphs, one is working and other one is not working. Please let me know if you need more details.

[abrist]

Can you post the output of the working and non-working checks?
Could you also increase the debug verbosity to see if there re additional errors?
http://support.nagios.com/wiki/index.ph ... h_Problems

[nagmoto]

Here are the check outputs:

Graph is working for this server:
[root@server1 ~]# /usr/lib64/nagios/plugins/contrib/check_uptime.pl -w 5
OK: Linux server1 2.6.32-431.el6.x86_64 - up 279 days 8 hours 15 minutes

Graph is not working on this server:
[root@server2 ~]# /usr/lib64/nagios/plugins/contrib/check_uptime.pl
OK: Linux server2 2.6.18-238.el5 - up 192 days 3 hours 56 minutes


Here is the increased debug verbosity:

2015-02-03 16:49:27 [20546] [2] Using Config File /etc/pnp4nagios/process_perfdata.cfg parameters
2015-02-03 16:49:27 [20546] [2] Default Timeout: 15 secs.
2015-02-03 16:49:27 [20546] [2] Config Timeout: 15 secs.
2015-02-03 16:49:27 [20546] [2] Actual Timeout: 15 secs.
2015-02-03 16:49:27 [20546] [1] process_perfdata.pl-0.6.22 starting in SYNC Mode
2015-02-03 16:49:27 [20546] [2] Datatype set to 'SERVICEPERFDATA'
2015-02-03 16:49:27 [20546] [1] Found Performance Data for server2 / check_uptime_1A (type=1)
2015-02-03 16:49:27 [20546] [2] Adapting Template using ARG 1
2015-02-03 16:49:27 [20546] [2] Adapting Template to check_uptime_1A -a 5.php (added ARG1)
2015-02-03 16:49:27 [20546] [2] Adapting Template to check_uptime_1A -a 5.php as defined in /etc/pnp4nagios/check_commands/check_nrpe.cfg
2015-02-03 16:49:27 [20546] [2] data2rrd called
2015-02-03 16:49:27 [20546] [2] RRDs::update /var/lib/pnp4nagios/server2/check_uptime_1A.rrd 1423003767:1
2015-02-03 16:49:27 [20546] [0] RRDs::update /var/lib/pnp4nagios/server2/check_uptime_1A.rrd 1423003767:1
2015-02-03 16:49:27 [20546] [0] RRDs::update ERROR /var/lib/pnp4nagios/server2/check_uptime_1A.rrd: expected 2 data source readings (got 2) from 1423003767
2015-02-03 16:49:27 [20546] [1] PNP exiting (runtime 0.002487s) ...

[lmiltchev]

Perhaps the RRD on server2 has different number of datasources than what the plugin is sending. Have you tried deleting the offending RRD and waiting for it to be recreated?

[nagmoto]

lmiltchev,

So you are saying I need to delete check_uptime.rrd file of the server2 from this directory /var/lib/pnp4nagios/server2 and pnp4nagios will recreate it ?I haven't tried deleting any file till now.

[slansing]

It should re-create it yes, as long as you are still checking that and it is returning performance data.

[nagmoto]

please close this thread.