Switched from SNMP to NCPA, mem and swap graph missing

[TBT]

We recently switched a few hosts using SNMP over to NCPA for monitoring. Both performance graphs for Memory Usage and Swap Usage are empty stating "No data to display". The other associated performance graphs such as CPU, Disk, etc are working.

perf1.png

If you change the Time Range, going back prior to the switch, the data is present.

perf2.png

Also, viewing the Service Status, all the Status Information is present.

perf3.png

Please advise.

[cdienger]

It's likely the format of the data used to graph changed. Move the rrd and xml files for these services(/usr/local/nagios/share/perfdata/<host>/<service_description>.[rrd|xml]), wait 15 minutes or so(depends on the check interval), and new files should be created with data visible in a graph.

[TBT]

Move them where?

[ssax]

Just rename them (or delete them) and they will be automatically rebuilt on the next check (then wait 15 minutes). This occurs if you change the check command on an existing service that initially contained a different number/type of metrics. Did you do that?

[TBT]

Removing the *.rrd and *.xml files in question resolved this issue. Thank you.

[ssax]

Are we okay to lock this up and mark it as resolved?

[TBT]

Yes.