This Puppet module helps manage promtotwilio, which is "a simple and stupid program that will receive webhooks from Prometheus to send them as text message (using Twilio) with the summary of the alert."
You need a Twilio account and before using this module should test that you can send SMS manually, e.g. with curl.
Once the prerequisites of this module are taken care of, its usage is fairly straightforward:
class { 'promtotwilio':
sid => 'your-twilio-account-sid',
token => 'your-twilio-auth-token',
sender => 'your-twilio-phone-number',
receiver => 'phone-number-to-send-sms-to',
port => 9191,
}
You can download promtotwilio from a custom URL using the url parameter, or you can place a copy of promtotwilio on your Puppet fileserver. The source parameter defines where the Puppet File resource gets the binary from.
The default listen port, 9090, may conflict with Prometheus. If you're using unpatched version of promtotwilio then port 9090 is your only choice.
To have alerts sent via SMS you need to configure Alertmanager routes in /etc/alertmanager/alertmanager.conf. Here's a simplistic example where alerts of critical severity get routed as SMS; other alerts will use default route (e.g. email).
route:
--- snip ---
routes:
- match:
severity: critical
receiver: sms
receivers:
- name: sms
webhook_configs:
- url: http://127.0.0.1:9191/send