Alert Manager memory alert format issue

[Ankit Shah]

Hi,

We have configured alert manager if memory usage per container goes above 8 GB. 

we are getting alert but usage value is coming in "7.073439744e+09" this format. is there anyway we can convert this to more user friendly format like "8.x GB",

we tried going through code but didnt find an option.

[Julius Volz]

Yes, you can use one of these templating functions in your alerting rule annotations: https://prometheus.io/docs/prometheus/latest/configuration/template_reference/#numbers

For example, something like this:

alert: MyMemoryHighAlert

expr: container_memory_usage_bytes > 8 * 1024^3

annotations:

  summary: "Container {{$labels.name}} on {{$labels.instance}} is using {{$value | humanize1024}} GiB of memory."

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Julius Volz

PromLabs - promlabs.com