darthferretus / alertmanager-bot

Bot for Prometheus' Alertmanager

Bot for Prometheus' Alertmanager

This is the Alertmanager bot for Prometheus that notifies you on alerts.
Just configure the Alertmanager to send Webhooks to the bot and that's it.

Additionally you can always send commands to get up-to-date information from the alertmanager.

Why?

Alertmanager already integrates a lot of different messengers as receivers for alerts.
I want to extend this basic functionality.

Previously the Alertmanager could only talk to you via a chat, but now you can talk back via commands.
You can ask about current ongoing alerts and silences.
In the future I plan to also support silencing via the chat, so you can silences after getting an alert from within the chat.
A lot of other things can be added!

Messengers

Right now it supports Telegram, but I'd like to add more in the future.

Commands

/start

Hey, Matthias! I will now keep you up to date!
/help

/stop

Alright, Matthias! I won't talk to you again.
/help

/alerts

🔥 FIRING 🔥
NodeDown (Node scraper.krautreporter:8080 down)
scraper.krautreporter:8080 has been down for more than 1 minute.
Started: 1 week 2 days 3 hours 50 minutes 42 seconds ago

🔥 FIRING 🔥 monitored_service_down (MONITORED SERVICE DOWN) The monitoring service 'digitalocean-exporter' is down. Started: 10 seconds ago

/silences

NodeDown 🔕
job="ranch-eye" monitor="exporter-metrics" severity="page"
Started: 1 month 1 week 5 days 8 hours 27 minutes 57 seconds ago
Ends: -11 months 2 weeks 2 days 19 hours 15 minutes 24 seconds

RancherServiceState 🔕
job="rancher" monitor="exporter-metrics" name="scraper" rancherURL="http://rancher.example.com/v1" severity="page" state="inactive"
Started: 1 week 2 days 3 hours 46 minutes 21 seconds ago
Ends: -3 weeks 1 day 13 minutes 24 seconds

/chats

Currently these chat have subscribed: @MetalMatze

/status

AlertManager
Version: 0.5.1
Uptime: 3 weeks 1 day 6 hours 15 minutes 2 seconds
AlertManager Bot
Version: 0.3.1
Uptime: 3 weeks 1 hour 17 minutes 19 seconds

/help

I'm a Prometheus AlertManager Bot for Telegram. I will notify you about alerts.
You can also ask me about my /status, /alerts & /silences

Available commands:
/start - Subscribe for alerts.
/stop - Unsubscribe for alerts.
/status - Print the current status.
/alerts - List all alerts.
/silences - List all silences.
/chats - List all users and group chats that subscribed.

Installation

Docker

docker pull metalmatze/alertmanager-bot:0.3.1

Start as a command:

Bolt Storage

docker run -d \
	-e 'ALERTMANAGER_URL=http://alertmanager:9093' \
	-e 'BOLT_PATH=/data/bot.db' \
	-e 'STORE=bolt' \
	-e 'TELEGRAM_ADMIN=1234567' \
	-e 'TELEGRAM_TOKEN=XXX' \
	-v '/srv/monitoring/alertmanager-bot:/data'
	--name alertmanager-bot \
	alertmanager-bot:0.3.1

Consul Storage

docker run -d \
	-e 'ALERTMANAGER_URL=http://alertmanager:9093' \
	-e 'CONSUL_URL=localhost:8500' \
	-e 'STORE=consul' \
	-e 'TELEGRAM_ADMIN=1234567' \
	-e 'TELEGRAM_TOKEN=XXX' \
	--name alertmanager-bot \
	alertmanager-bot:0.3.1

Usage within docker-compose:

alertmanager-bot:
  image: metalmatze/alertmanager-bot:0.3.1
  environment:
    ALERTMANAGER_URL: http://alertmanager:9093
    BOLT_PATH: /data/bot.db
    STORE: bolt
    TELEGRAM_ADMIN: '1234567'
    TELEGRAM_TOKEN: XXX
    TEMPLATE_PATHS: /templates/default.tmpl
  volumes:
  - /srv/monitoring/alertmanager-bot:/data

Build from source

go get github.com/metalmatze/alertmanager-bot

Configuration

ENV Variable	Description
ALERTMANAGER_URL	Address of the alertmanager, default: http://localhost:9093
BOLT_PATH	Path on disk to the file where the boltdb is stored, default: /tmp/bot.db
CONSUL_URL	The URL to use to connect with Consul, default: localhost:8500
LISTEN_ADDR	Address that the bot listens for webhooks, default: 0.0.0.0:8080
STORE	The type of the store to use, choose from bolt (local) or consul (distributed)
TELEGRAM_ADMIN	The Telegram user id for the admin. The bot will only reply to messages sent from an admin. All other messages are dropped and logged on the bot's console.
TELEGRAM_TOKEN	Token you get from @botfather
TEMPLATE_PATHS	Path to custom message templates, default template is ./default.tmpl, in docker - /templates/default.tmpl

Authentication

Additional users may be allowed to command the bot by giving multiple instances of the --telegram.admin command line option or by specifying a newline-separated list of telegram user IDs in the TELEGRAM_ADMIN environment variable.

- TELEGRAM_ADMIN="**********\n************"
--telegram.admin=1 --telegram.admin=2

Alertmanager Configuration

Now you need to connect the Alertmanager to send alerts to the bot.
A webhook is used for that, so make sure your LISTEN_ADDR is reachable for the Alertmanager.

For example add this to your alertmanager.yml configuration:

receivers:
- name: 'alertmananger-bot'
  webhook_configs:
  - send_resolved: true
    url: 'http://alertmanager-bot:8080'

Development

Get all dependencies. We use golang/dep.
Fetch all dependencies with:

dep ensure -v -vendor-only

Build the binary using make:

make install

In case you have $GOPATH/bin in your $PATH you can now simply start the bot by running:

alertmanager-bot

Missing

Commands

• /silence - show a specific silence
• /silence_del - delete a silence by command
• /silence_add - add a silence for a alert by command

More Messengers

At the moment I only implemented Telegram, because it's so freakin' easy to do.

Messengers considered to add in the future:

• Slack
• Mattermost
• Matrix

If one is missing for you just open an issue.