topic Re: i want to monitor certificate expiry date ( not ssl ) in Dynatrace Managed Q&A

Monitor expiration date of certificate (not SSL) in Dynatrace Managed

superuser786 — Mon, 05 Jan 2026 11:03:34 GMT

i have https endpoint and the output will be like below, i want to configure dynatrace alert if expiry date 15days before.. is it possible in dynatrace and how to configure?

Output:

{
"status": "UP",
"details": {
"AB_TEST": {
"issuer": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"subject": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"serial": xxxxxxxxxx,
"validity": {
"from": "2025-01-28T11:39:52", -------> i want to configure this alert before certificate expiry
"to": "2026-02-27T11:39:51"
},

Re: i want to monitor certificate expiry date ( not ssl )

superuser786 — Mon, 08 Dec 2025 10:53:55 GMT

i am using managed dynatrace

Re: i want to monitor certificate expiry date ( not ssl )

AntonPineiro — Mon, 08 Dec 2025 11:17:41 GMT

Hi,

You can explore Synthetic monitoring. You can create a Synthetic monitor and alert base on certificate expiration.

Best regards

Re: i want to monitor certificate expiry date ( not ssl )

Kenny_Gillette — Mon, 08 Dec 2025 15:25:18 GMT

still should be able to use Classic Synthetics

Re: i want to monitor certificate expiry date ( not ssl )

sujit_k_singh — Mon, 08 Dec 2025 21:53:40 GMT

Hello,

Synthetic monitoring is the best solution in this context, i have used this and works perfectly.

Thanks,

Tijust

Re: i want to monitor certificate expiry date ( not ssl )

superuser786 — Tue, 09 Dec 2025 05:18:28 GMT

i am aware that synthetic for only SSL, but my query is how to monitor synthetic with the output of the endpoint that i attached above

Re: i want to monitor certificate expiry date ( not ssl )

superuser786 — Tue, 09 Dec 2025 05:25:43 GMT

i cant achieve using synthetic why because its only for SSL certificate validations, can you share how do you achieve the api output text to monitor and send the alert? i have attached my code out put above chat

Re: i want to monitor certificate expiry date ( not ssl )

sujit_k_singh — Tue, 09 Dec 2025 05:32:41 GMT

ok, understood, To achieve this, you can create an HTTP Synthetic Monitor in Dynatrace. Start by navigating to Synthetic → Create HTTP monitor, and enter the URL of your endpoint that returns the JSON with certificate details. Once the monitor is set up, add a JavaScript validation step after the request. In this step, you’ll parse the JSON response and calculate how many days remain until the expiry date.

If the endpoint data is coming in logs instead of being accessible via a direct URL, then a Synthetic monitor won’t work because it needs an HTTP endpoint to call. In that case If the JSON snippet appears in your logs instead of an API endpoint, you can leverage Log Monitoring. The idea is to extract the expiry date from the log and turn it into a metric for alerting. First, create a log processing rule to capture the validity.to field as a custom attribute. Next, convert that date into a timestamp and calculate the difference from the current time. Once you have this value, push it as a custom metric (like, days_until_expiry). Finally, set up a custom alerting rule that triggers when days_until_expiry is less than 15

Re: i want to monitor certificate expiry date ( not ssl )

AntonPineiro — Tue, 09 Dec 2025 08:02:47 GMT

Hi,

You can use Synthetic using custom Javascript&colon;

Make GET request.
Extract information you want for JSON.
Compare date with actual date.
Create event failure if lower than 15 days.

Best regards