Graphs for individual cores - not working

Troubleshooting
1

CMK version:

cee 2.4.0p10

OS version:

Oracle Linux 8.9

Error message:

I had it, but the CPU utilization per core display stopped working.

I only noticed this after upgrading from 2.3 to 2.4, but I can see from the graphs that it stopped working earlier.

2025.09.02-cpu
2025.09.02-cpu997×932 203 KB

The rule seems to match the host.

2025.09.02-rule
2025.09.02-rule1058×73 4.67 KB

I can somehow force these graphs to recreate, and I might even lose the historical data, but I’d like to get this functionality back.

2

i have an error

Error creating RRD for pnp_multiple;xxx;CPU utilization;cpu_core_util_1;2.001158: Tried to create /opt/omd/sites/checkmk/var/pnp4nagios/perfdata/xxx/CPU_utilization_cpu_core_util_1.rrd, but this RRD exists.
3

these commands helped me:

cmk-convert-rrds --delete-rrds
cmk-convert-rrds