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homelab/k8s-ng/core/prom-stack/alertmanager-config.yaml
T
Aleksandr Bogomiakov 9b0530fb70
Update Kubernetes Services Wiki / Generate and Update K8s Wiki (push) Successful in 9s
Bound Telegram alert messages and identify affected workloads
2026-10-12 18:23:21 +01:00

72 lines
3.8 KiB
YAML

apiVersion: monitoring.coreos.com/v1alpha1
kind: AlertmanagerConfig
metadata:
name: telegram
labels:
alertmanager: main
annotations:
argocd.argoproj.io/sync-wave: "1"
spec:
route:
groupBy: [cluster, namespace, alertname]
# A two-minute grace period absorbs alerts which resolve immediately and
# never need to interrupt a human.
groupWait: 2m
groupInterval: 10m
repeatInterval: 12h
receiver: telegram
routes:
- receiver: "null"
matchers:
- name: alertname
value: Watchdog|InfoInhibitor
matchType: =~
# Informational alerts remain queryable in Prometheus but do not page the
# Telegram chat. Warning and critical alerts still use the parent route.
- receiver: "null"
matchers:
- name: severity
value: info
matchType: =
receivers:
- name: telegram
telegramConfigs:
- botToken:
name: alertmanager-telegram
key: bot-token
# Telegram chat IDs are routing identifiers rather than credentials;
# AlertmanagerConfig only supports an integer here, not a Secret ref.
chatID: 124317807
sendResolved: true
parseMode: HTML
# Bound the rendered HTML, including escaped text, before Telegram's
# 4096-character limit. Keep the full group accessible in Prometheus.
message: |-
{{- define "telegram.alert.text" -}}
{{- $escaped := html . -}}
{{- $short := printf "%.500s" $escaped -}}
{{- $short | reReplaceAll "&[^;]*$" "" | safeHtml -}}{{- if ne $short $escaped }}…{{ end -}}
{{- end -}}
{{- $alerts := .Alerts.Resolved -}}
{{- if eq .Status "firing" }}{{ $alerts = .Alerts.Firing }}{{ end -}}
{{ if eq .Status "firing" }}🔥 <b>FIRING · {{ len .Alerts.Firing }}</b>{{ else }}✅ <b>RESOLVED · {{ len .Alerts.Resolved }}</b>{{ end }}
{{ with .CommonLabels.alertname }}<b>{{ printf "%.64s" . }}</b>{{ end }}{{ with .CommonLabels.severity }} · <code>{{ printf "%.16s" . }}</code>{{ end }}
{{ range $index, $alert := $alerts }}{{ if lt $index 3 }}
{{- $context := "" -}}
{{- with .Labels.namespace }}{{ $context = printf "Namespace: %s\n" . }}{{ end -}}
{{- if .Labels.daemonset }}{{ $context = printf "%sDaemonSet: %s\n" $context .Labels.daemonset -}}
{{- else if .Labels.deployment }}{{ $context = printf "%sDeployment: %s\n" $context .Labels.deployment -}}
{{- else if .Labels.statefulset }}{{ $context = printf "%sStatefulSet: %s\n" $context .Labels.statefulset -}}
{{- else if .Labels.job_name }}{{ $context = printf "%sJob: %s\n" $context .Labels.job_name -}}
{{- else if .Labels.pod }}{{ $context = printf "%sPod: %s\n" $context .Labels.pod -}}
{{- end -}}
{{- with .Labels.node }}{{ $context = printf "%sNode: %s\n" $context . -}}
{{- else }}{{ if and (not .Labels.daemonset) (not .Labels.deployment) (not .Labels.statefulset) .Labels.instance }}{{ $context = printf "%sInstance: %s\n" $context .Labels.instance }}{{ end }}{{ end -}}
{{ if eq .Status "firing" }}🔴{{ else }}🟢{{ end }} {{ template "telegram.alert.text" (printf "%s%s\n%s" $context .Annotations.summary .Annotations.description) }}
Started: {{ .StartsAt | tz "Europe/London" | date "2006-01-02 15:04 MST" }}
{{ end }}{{ end }}
{{ if gt (len $alerts) 3 }}Showing the first 3 of {{ len $alerts }} alerts; open Prometheus for the full group.{{ end }}
<a href="https://prom.hexor.cy/alerts">📈 Open alerts</a>{{ with .CommonAnnotations.runbook_url }}{{ if le (len .) 256 }} · <a href="{{ . }}">📖 Runbook</a>{{ end }}{{ end }}
- name: "null"