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alertmanager-discord

Give this a webhook (with the DISCORD_WEBHOOK environment variable) and point it as a webhook on alertmanager, and it will post your alerts into a discord channel for you as they trigger:

Warning

This program is not a replacement to alertmanager, it accepts webhooks from alertmanager, not prometheus.

The standard "dataflow" should be:

Prometheus -------------> alertmanager -------------------> alertmanager-discord

alerting:                 receivers:                         
  alertmanagers:          - name: 'discord_webhook'         environment:
  - static_configs:         webhook_configs:                   - DISCORD_WEBHOOK=https://discordapp.com/api/we...
    - targets:              - url: 'http://localhost:9094'  
       - 127.0.0.1:9093

Example alertmanager config:

global:
  # The smarthost and SMTP sender used for mail notifications.
  smtp_smarthost: 'localhost:25'
  smtp_from: '[email protected]'
  smtp_auth_username: 'alertmanager'
  smtp_auth_password: 'password'

# The directory from which notification templates are read.
templates: 
- '/etc/alertmanager/template/*.tmpl'

# The root route on which each incoming alert enters.
route:
  group_by: ['alertname']
  group_wait: 20s
  group_interval: 5m
  repeat_interval: 3h 
  receiver: discord_webhook

receivers:
- name: 'discord_webhook'
  webhook_configs:
  - url: 'http://localhost:9094'

Docker

If you run a fancy docker/k8s infra, you can find the docker hub repo here: https://hub.docker.com/r/benjojo/alertmanager-discord/