DataDog & Mendix: how do I create monitoring and notifications when an app is down?

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I really hope I find some DataDog experts here :-) Google hasn't been too helpful.  We're using DataDog and I would love to create some kind of monitoring to poll a URL/host and have it notify me on Slack when the Mendix application is down (503 error). It has been working fine, so this issue doesn't stem from a faulty API key or installation I think. I've looked at all the monitoring options DataDog has to offer but haven't come across one that does the job. We're not using DataDog Agent (I'm actually not even sure if that's possible with Mendix) so I feel like I'm limited. So far I've tried the Status Monitor, but I only have 4 service checks available there and none seem to work.  I've tried Log Monitoring, but can't find something to pinpoint the application going down to filter on. I read something online about a HTTP check but that needs the Agent to work...  Basically all tips and tricks are welcome. I've also looked into Mendix Alerts and sending them through a Webhook to Slack, but I wanted to try DataDog first since we already use this. But yes, suggestions on other tooling are welcome too. I'd just like a Slack notification when an app is down. 
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Searched for 2 days, asked the question here and found the answer within the hour. Love it.

 

I went to Digital Experience in DataDog, created API tests (there's even a template available!) and just filled in the fields. Run test every 30 seconds, notify when I you don't receive a 200 OK from the endpoint. You can do this for acceptance or test environments too. I already configured the Slack integration and selected my channels, but keep in mind you have to do this to get the notifications. 

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Hi Manon Kovacs, How did you manage to connect DataDog to Mendix? For some reasons, mendix is not sending data to DataDog. Can you please share your steps?

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