CPU Temperature graphs not working in 24.7.7

[awilkin87]

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Describe the bug

After upgrading to 24.7.7, I found that the reporting graphs were not working. I reset the RRD data and restarted the system. The graphs re-populated, except for the cputemp graph.

After some troubleshooting, I tracked the issue to the recent RRD refactoring (#7836). I found that the sysctl command to get CPU temps was returning an error. Also, the RRD filename is not defined in Types/Temperature.php.

To Reproduce

Steps to reproduce the behavior:

1. Install OPNsense 24.7.6
2. Ensure Thermal Sensors are configured correctly under System -> Settings -> Miscellaneous
3. Ensure "Enables the RRD graphing backend" is checked under Reporting -> Settings.
4. Ensure non-zero values are displayed in the System/Cputemp graph under Reporting -> Health.
5. Upgrade to OPNsense 24.7.7
6. Go to Reporting -> Settings
7. Click "Reset RRD Data"
8. Wait over 1 minute

Actual behavior

• The system-cputemp RRD is not recreated
• There is no System/Cputemp graph under Reporting -> Health, or if there is a graph it does not update.

Expected behavior

• The system-cputemp RRD should be listed under Reporting -> Settings
• The System/Cputemp graph under Reporting -> Health should appear with non-zero values.

Describe alternatives you considered

N/A

Screenshots

N/A

Relevant log files

N/A

Additional context

N/A

Environment

Software version used and hardware type if relevant, e.g.:

OPNsense 24.7.7 (amd64).
Intel® Pentium® J3710 2.64Ghz Quad Core (using coretemp)
Network Intel® I225-V

[awilkin87]

I've submitted a pull request with a fix: #8024