Hi,

I wish to address a problem that I was facing few days back.
Here's the problem statement:

Certificates of Kafka broker in Control plane expired which impacted Kafka 
Mirror maker service in all dataplanes. As a result, we renewed Kafka broker 
certificates manually in Control plane which restored kafka mirror maker 
service.

Short Term actions include:

Delete Kafka-mirror maker pods in different data planes to check if the newly 
created pods are able to use the certificate.


My question here is, how can we setup alert/notification for certificate 
expiry. Is there any exporter which can capture the logs, and create a metric 
to monitor it and push it to Prometheus so that we can get alerting on the same.

Please do send me necessary links/tools which is useful to deal with this.


Thanks,
Aninditya

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