[JFYI] After Upgrade CRE 1.6 -> 2.2 : Cannot get RRD data for

Troubleshooting
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1

CMK version: 2.2.0p23
OS version: Ubuntu 22.04

Error message:

Cannot create graph

Cannot get RRD data for server/service/...

After Upgrading from CRE 1.6 to 2.0 to 2.1 to CRE 2.2, RRD-Data had no longer been generated. The historical data were visible, but no new data are being rendered.

I search within this forum and learned about cmk –convert-rrds, but the currently running cmk version does not support this switch. I assume this is CEE.

The fix I applied was to …

  • backup the $OLDSITE (cp + omd backup)
  • save output of omd config $OLDSITE show
  • stop the $OLDSITE
  • delete the site (omd rm $OLDSITE)
  • create $NEWSITE
  • copy directory $OLDSITE/etc/check_mk to $NEWSITE/etc/check_mk
  • fix the content
    • chown -R $NEWSITE:$NEWSITE $NEWSITE/etc
    • change all occurrances of $OLDSITE in files under $NEWSITE/etc into $NEWSITE
    • delete all files ending in .pkl in $NEWSITE/etc
    • apply all config values from $OLDSITE to $NEWSITE (omd config $NEWSITE set $KEY $VALUE)
    • start $NEWSITE
    • re-inventorize all hosts (cmk -II ; cmk -R )

I hope, I did not forget to write some points.

This way I lost the perfomance data history, but it’s working again now.

Taking the same SITE-Name for $NEWSITE will make things easier.

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