Hi! I ran into an issue over the weekend where our automated system updated some of our brokers with a certificate signed by a new certificate authority but didn't update the truststore on the other brokers. I've dumped the stacktrace in a gist <https://gist.github.com/TylerLubeck/a734514d8a2e9936f35e223f90f21307> for context.
>From what I've been able to tell, this error only shows up in logs. It'd be useful to have this reported via other metrics as well so I can detect the problem sooner next time around. I *think* it'll be something like updating the SSLTransportLayer <https://github.com/apache/kafka/blob/be58580e14be93618f11e609389ff6bb16317702/clients/src/main/java/org/apache/kafka/common/network/SslTransportLayer.java#L50> to have a counter of number of failures and then registering itself as an mbean via CoreUtils <https://github.com/apache/kafka/blob/33d06082117d971cdcddd4f01392006b543f3c01/core/src/main/scala/kafka/utils/CoreUtils.scala#L140>. That said, I'm new to Java development and have only touched JMX from the 'oh neat, metrics' side of things. Is this worth pursuing? Is this roughly the right track? I'm more than happy to add this in but I'm not entirely sure how to start. Thanks, Tyler Lubeck (813) 469 - 1499 www.TylerLubeck.com <http://www.tylerlubeck.com/> www.linkedin.com/in/tylerlubeck/
