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Monit 2 Telegram

2022-03-10

https://github.com/matriphe/monit2telegram

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GitHub - matriphemonit2telegram A simple script to send Monit alerts using Telegram bot.

title: Summary
collapse: open
Note Description

style: number

A simple script to send Monit alerts using Telegram bot.

By default, Monit only sends alert notifications via email. But we can also set a hook to execute a script. When executing the script, Monit sets a few environment variables about the alert.

This tiny script transforms those variables into a text message and pipes them to Telegram using a bash script for delivery.

This script is inspired by Monit2Twilio.

Requirements

Create Telegram Bot

If you don't have a Telegram Bot, just create one. By using a Telegram bot you don’t have to use a real Telegram client or reuse your Telegram account.

Getting Bot Token

You will get a Telegram Bot Token after bot created. Keep this token, we will use it later. The bot token is looked like this.

123456789:aBcDeFgHiJkLmN-OpQrStUvWXyZ12345678

Getting Chat ID

To send messages to a Telegram chat, you must first needs to start a chat with the bot. Clicking on the bot link after creation should be enough, it will automatically send a message of /start to the bot.

To get the Chat ID from Telegram bot, execute this command using getUpdates function of Telegram API.

title: Get Chat ID
~~~bash
curl --silent "https://api.telegram.org/bot{TOKEN}/getUpdates" | jq
~~~

title: Output
~~~javascript
{
 "ok": true,
 "result": [
 {
 "update_id": 17082016,
 "message": {
 "message_id": 17,
 "from": {
 "id": 22031984,
 "first_name": "User"
 },
 "chat": {
 "id": 22031984,
 "first_name": "User",
 "type": "private"
 },
 "date": 1471402800,
 "text": "Hello from the other side~"
 }
 }
 ]
}
~~~

In this example the Chat ID to look out for is 22031984. Replace {TOKEN} with your Telegram bot token.

Usage

Clone this repo or download the zipped file.

~~~bash
git clone https://github.com/matriphe/monit2telegram.git 
cd monit2telegram
~~~

Put your Telegram Bot ID and Chat ID in telegramrc and save it to the /etc directory (/etc/telegramrc).

~~~bash
cp telegramrc /etc/telegramrc
~~~

Put sendtelegram.sh and monit2telegram.sh to /usr/local/bin and make them executable.

~~~bash
cp sendtelegram.sh /usr/local/bin/sendtelegram
chmod +x /usr/local/bin/sendtelegram
cp monit2telegram.sh /usr/local/bin/monit2telegram
chmod +x /usr/local/bin/monit2telegram
~~~

Test the sendtelegram script by running this command.

~~~bash
sendtelegram -c /etc/telegramrc -m "Hello from the other side!"
~~~

title: output
~~~bash
Sending message 'Hello from the other side!' to 22031984
Done!
~~~

You should see Telegram message sent by your Telegram bot.

Set Up Monit

Now you can add Monit alert by adding this line to Monit configuration file.

title: monitrc
~~~bash
check file nginx.pid with path /var/run/nginx.pid
    if changed pid then exec "/usr/local/bin/monit2telegram"
~~~

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