Hey!
Environment: k8s, kube prometheus stack
I’m new to writing Prometheus rules and wanted to reach out to get a better
understanding and any guidance on best practices. I’m in the process of
implementing custom rules and need to understand the elements that make up
a rule namely metadata labels and rule labels. Outcomes where possible and
applicable making the process repeatable and less static.
In the example below, the rule labels $labels is a map; but what is in the
map how can I see all the elements to know what's important? and available
for example the namespace isn't working.
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
name: awscni
labels:
ruleset: custom
mandatory: "true"
namespace: monitoring
spec:
groups:
- name: rules-awscni
rules:
- alert: CNIAvailableIPsLow
expr: sum(awscni_ip_max) - sum(awscni_assigned_ip_addresses) < 180
for: 10m
labels:
severity: critical
namespace: "{{ $labels.namespace }}"
annotations:
summary: "AWS EKS available IP addresses low"
description: "The AWS EKS CNI available IP addresses is less than
50.\n VALUE = {{ $value }}"
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