Alert rules with "constans"

[freeseacher]

Hi i want to separate constants with threshold from rules. and made such configuration.

rule_files:
  - "init.rules"
  - "rules/*.rules"

init.rules

prod:disk_used_percent:warning = 80
prod:disk_used_percent:critical = 95

I want to use it in such rule

cat rules/prod.rules 
ALERT disk_usage_percent_warning
  IF disk_used_percent > prod:disk_used_percent:warning
  LABELS {....}
  ANNOTATIONS { .....}

but when i do t manually

disk_used_percent{env="prod",host="wrk01"} > prod:disk_used_percent:warning

return empty result
but

disk_used_percent{dc="BAL",env="prod",fstype="xfs",host="wrk01",job="wrk01",path="/"}   82.29296049154334

and

prod:disk_used_percent:warning{}    80

According to https://prometheus.io/docs/querying/operators/#comparison-binary-operators that seems to be "Between two scalars" and should be fine.
Am i'am doing something wrong?

[brian-brazil]

prod:disk_used_percent:warning is a vector.

It's easiest to use hardcoded values when you can, it's simpler to understand. The more general solution is complicated.

[grobie]

We use threshold metrics in a few places where we want to allow users to configure different thresholds. It gets indeed a lot more complicated though.

@freeseacher Both sides are vectors. You'll either need to the right hand side to a scalar or specify the labels the vector matching should work on.

[lock]

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