vrutkovs / 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: 0.4.3
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:0.4.3

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 \
	metalmatze/alertmanager-bot:0.4.3

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 \
	metalmatze/alertmanager-bot:0.4.3

ETCD Storage

docker run -d \
	-e 'ALERTMANAGER_URL=http://alertmanager:9093' \
	-e 'ETCD_URL=localhost:2379' \
	-e 'STORE=etcd' \
	-e 'ETCD_TLS_INSECURE=true' \
	-e 'TELEGRAM_ADMIN=1234567' \
	-e 'TELEGRAM_TOKEN=XXX' \
	--name alertmanager-bot \
	metalmatze/alertmanager-bot:0.4.2

docker-compose:

networks:
  alertmanager-bot: {}
services:
  alertmanager-bot:
    command:
    - --alertmanager.url=http://localhost:9093
    - --log.level=info
    - --store=bolt
    - --bolt.path=/data/bot.db
    environment:
      TELEGRAM_ADMIN: "1234"
      TELEGRAM_TOKEN: XXXXXXX
    image: metalmatze/alertmanager-bot:0.4.3
    networks:
    - alertmanager-bot
    ports:
    - 8080:8080
    restart: always
    volumes:
    - ./data:/data
version: "3"

Kubernetes:

apiVersion: v1
items:
- apiVersion: v1
  data:
    admin: MTIzNA==
    token: WFhYWFhYWA==
  kind: Secret
  metadata:
    labels:
      app.kubernetes.io/name: alertmanager-bot
    name: alertmanager-bot
    namespace: monitoring
  type: Opaque
- apiVersion: v1
  kind: Service
  metadata:
    labels:
      app.kubernetes.io/name: alertmanager-bot
    name: alertmanager-bot
    namespace: monitoring
  spec:
    ports:
    - name: http
      port: 8080
      targetPort: 8080
    selector:
      app.kubernetes.io/name: alertmanager-bot
- apiVersion: apps/v1
  kind: StatefulSet
  metadata:
    labels:
      app.kubernetes.io/name: alertmanager-bot
    name: alertmanager-bot
    namespace: monitoring
  spec:
    podManagementPolicy: OrderedReady
    replicas: 1
    selector:
      matchLabels:
        app.kubernetes.io/name: alertmanager-bot
    serviceName: alertmanager-bot
    template:
      metadata:
        labels:
          app.kubernetes.io/name: alertmanager-bot
        name: alertmanager-bot
        namespace: monitoring
      spec:
        containers:
        - args:
          - --alertmanager.url=http://localhost:9093
          - --log.level=info
          - --store=bolt
          - --bolt.path=/data/bot.db
          env:
          - name: TELEGRAM_ADMIN
            valueFrom:
              secretKeyRef:
                key: admin
                name: alertmanager-bot
          - name: TELEGRAM_TOKEN
            valueFrom:
              secretKeyRef:
                key: token
                name: alertmanager-bot
          image: metalmatze/alertmanager-bot:0.4.3
          imagePullPolicy: IfNotPresent
          name: alertmanager-bot
          ports:
          - containerPort: 8080
            name: http
          resources:
            limits:
              cpu: 100m
              memory: 128Mi
            requests:
              cpu: 25m
              memory: 64Mi
          volumeMounts:
          - mountPath: /data
            name: data
        restartPolicy: Always
        volumes:
        - name: data
          persistentVolumeClaim:
            claimName: data
    volumeClaimTemplates:
    - apiVersion: v1
      kind: PersistentVolumeClaim
      metadata:
        labels:
          app.kubernetes.io/name: alertmanager-bot
        name: alertmanager-bot
        namespace: monitoring
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 1Gi
        storageClassName: standard
kind: List

Ansible

If you prefer using configuration management systems (like Ansible) you might be interested in the following role: mbaran0v.alertmanager-bot

Build from source

GO111MODULE=on go get github.com/metalmatze/alertmanager-bot/cmd/alertmanager-bot

Configuration

ENV Variable	CLI flag	Required	Default	Description
ALERTMANAGER_URL	alertmanager.url		http://localhost:9093	Address of the alertmanager
BOLT_PATH	bolt.path		/tmp/bot.db	Path on disk to the file where the boltdb is stored
CONSUL_URL	consul.url		localhost:8500	The URL to use to connect with Consul
LISTEN_ADDR	listen.addr		0.0.0.0:8080	Address that the bot listens for webhooks
STORE	store	✓		The type of the store to use, choose from bolt (local), consul or etcd (distributed)
STORE_KEY_PREFIX	storeKeyPrefix		telegram/chats	Key prefix for the store
ETCD_URL	etcd.url		localhost:2379	The URL that's used to connect to the ETCD store
ETCD_TLS_INSECURE	etcd.tls.insecure		false	Use TLS connection to ETCD store or not
ETCD_TLS_INSECURE_SKIP_VERIFY	etcd.tls.insecureSkipVerify			Skip server certificates verification
ETCD_TLS_CERT	etcd.tls.cert			Path to the TLS cert file
ETCD_TLS_KEY	etcd.tls.key			Path to the TLS key file
ETCD_TLS_CACERT	etcd.tls.ca			Path to the TLS trusted CA cert file
LOG_JSON	log.json			Tell the application to log json and not key value pairs
LOG_LEVEL	log.level		info	The log level to use for filtering logs. Possible values: debug, info, warn, error
TELEGRAM_ADMIN	telegram.admin	✓		The Telegram user id for the admin (not the bot itself, you, the user). The bot will only reply to messages sent from an admin. All other messages are dropped and logged on the bot's console. Your user id you can get from @userinfobot.
TELEGRAM_TOKEN	telegram.token	✓		Token you get from @botfather
TEMPLATE_PATHS	template.paths		/templates/default.tmpl	Path to custom message templates

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

Development

Build the binary using make:

make

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.