Notification by Telegram

Send Icinga 2 notification via Telegram

Prepare

Create your bot

Obviously you need a bot to begin:

Follow the official Telegram guide and do not forget to grab your bot API TOKEN (referred to here as BOTTOKEN) afterwards

Get your chat_id(s)

You can notify a specific TG user account or throw a message to a TG group.

In order to do so you need to know the corresponding (hidden) ID also called chat_id (-q TELEGRAM_CHATID).

If you want to notify a group/channel:

1. add your bot to that group/channel

2. send with your favorite client a simple mention msg to your bot (e.g. hi @mybot)

3. catch updates for your bot: curl https://api.telegram.org/bot<BOTTOKEN>/getUpdates

4. review the output, an example below:

   "message":{"message_id":91, "from":{"id":123456789, "is_bot":false,"first_name":"foo","username":"foobar","language_code":"de"}, "chat":{"id":-987654321, "title":"","type":"group","all_members_are_administrators":true},"date":1563547428,"group_chat_created":true}}]}`

   There are 2 important parts here:

   • a) "from":{"id":123456789 which is the unique user/chat_id of the user who sends a message to your bot (required to send to a notify to that person directly)
   • b) "chat":{"id":-987654321 which is the unique group/channel id of the group where the message has been sent

If you do not want to notify a group i.e. just a direct user notification:

1. do the same as above, just at step 1 make a direct message to your bot instead
2. as you have done a direct message you will only get a "from" id which is all you need here

Examples

Testing a notification

sending a test notification (replace the token, botname and chat id obviously)

sudo -u nagios ./service-by-telegram.sh -4 127.0.0.1 -l myhostname -o testingTGnotifiy -p <myBotname> -q <myGroupChatId> -r "<1234134325:blafasel>" -s CRITICAL -c mycomment -b mycommentuser -i https://myicingaserver/icingaweb2 -n maaaaaaaaaaa -d"$(date +%F-%T)" -e serviceshort -u fullservicename -D

Icinga2 objects

Example Notification Object

apply Notification "Host by Telegram" to Host {
    command = "Notify Host By Telegram"
    interval = 1h
    assign where host.vars.notification_type == "Telegram"
    users = [ "telegram_unixe" ]
    vars.notification_logtosyslog = true
    vars.telegram_bot = "<YOUR_TELEGRAM_BOT_NAME>"
    vars.telegram_chatid = "<YOUR_TELEGRAM_CHAT_ID>"
    vars.telegram_bottoken = "<YOUR_TELEGRAM_BOT_TOKEN>"
}

Example Command Definitions

object NotificationCommand "Notify Host By Telegram" {
    import "plugin-notification-command"
    command = [ "/etc/icinga2/scripts/host-by-telegram.sh" ]
    arguments += {
        "-4" = {
            required = true
            value = "$address$"
        }
        "-6" = "$address6$"
        "-b" = "$notification.author$"
        "-c" = "$notification.comment$"
        "-d" = {
            required = true
            value = "$icinga.long_date_time$"
        }
        "-i" = "$icingaweb2url$"
        "-l" = {
            required = true
            value = "$host.name$"
        }
        "-n" = "$host.display_name$"
        "-o" = {
            required = true
            value = "$host.output$"
        }
        "-p" = {
            required = true
            value = "$telegram_bot$"
        }
        "-q" = {
            required = true
            value = "$telegram_botid$"
        }
        "-r" = {
            required = true
            value = "$telegram_bottoken$"
        }
        "-s" = {
            required = true
            value = "$host.state$"
        }
        "-t" = {
            required = true
            value = "$notification.type$"
        }
        "-v" = "$notification_logtosyslog$"
    }
}

object NotificationCommand "Notify Service By Telegram" {
    import "plugin-notification-command"
    command = [ "/etc/icinga2/scripts/service-by-telegram.sh" ]
    arguments += {
        "-4" = {
            required = true
            value = "$address$"
        }
        "-6" = "$address6$"
        "-b" = "$notification.author$"
        "-c" = "$notification.comment$"
        "-d" = {
            required = true
            value = "$icinga.long_date_time$"
        }
        "-e" = {
            required = true
            value = "$service.name$"
        }
        "-i" = "$icingaweb2url$"
        "-l" = {
            required = true
            value = "$host.name$"
        }
        "-n" = "$host.display_name$"
        "-o" = {
            required = true
            value = "$service.output$"
        }
        "-p" = {
            required = true
            value = "$telegram_bot$"
        }
        "-q" = {
            required = true
            value = "$telegram_botid$"
        }
        "-r" = {
            required = true
            value = "$telegram_bottoken$"
        }
        "-s" = {
            required = true
            value = "$service.state$"
        }
        "-t" = {
            required = true
            value = "$notification.type$"
        }
        "-u" = {
            required = true
            value = "$service.display_name$"
        }
        "-v" = "$notification_logtosyslog$"
    }
}

Example Director config