I had a fully working Prometheus instance running on Debian 10, although I cannot remember what version it was (but it was up to date). Rules were working fine.
I have since upgraded Debian to 11, and Prom is now running version 2.24.1. However my rules files are no longer loading.
The relevant config in the (unchanged) Prom yml is:
# Load rules once and periodically evaluate them according to the global 'evaluation_interval'. rule_files: - /home/prometheus-user/prometheus/rules/*.yml
Two files exist in there, and
promtool is successfully able to check and load them:
$ ll /home/prometheus-user/prometheus/rules/*.yml -rw-r--r-- 1 prometheus-user prometheus 2725 Jan 23 22:03 /home/prometheus-user/prometheus/rules/alerts.yml -rw-r--r-- 1 prometheus-user prometheus 373 Aug 25 2020 /home/prometheus-user/prometheus/rules/recording-rules.yml
Under Rules in the web ui I see:
Rules No rules defined
But the configuration seems to have loaded fine via the web ui.
Running Prom with the debug log level doesn’t seem to show anything interesting.
Any help or tips appreciated!