i want to enable sms notifications for icinga2 so i’m asking witch sms service should i install and how to configure it with icinga2.
not sure if anyone will recommend a special SMS service but I guess most people just use available services out there. All I know have a HTTP-API which makes the script required to send the notifications quite simple as you just need the SMS content being sent via curl to the providers API.
A pretty simple but working example can be found here:
The README contains everything you need to now. In the end it’s up to you if you use that or write your own implementation.
If you want to use your own SMS gateway and am looking for some commercial solution you may want to check https://shop.netways.de/produkt-kategorie/alarmierung/sms-server/ . https://exchange.icinga.com lists plugins for these vendors, too.
I can not say anything regarding any open source SMS gateways / servers.