MSK Connect support jks keystore location ?

yes, this can be done using S3. Upload the JKS file into S3 and check out the sample Java code in the link below.

Reference: https://docs.aws.amazon.com/kinesisanalytics/latest/java/example-keystore.html

I had the same question, and it really is for MSK Connect, not MSK itself. For instance, the elastic-search sink connector uses a truststore for ssl validation Example config:

elastic.https.ssl.truststore.location=some/path/truststore.jks
elastic.https.ssl.truststore.password=asdfasdf
elastic.https.ssl.truststore.type=JKS
elastic.https.ssl.protocol=TLS

How can we provide the path to a truststore for a given connector on MSK connect?

Also would like to see answer for this in order to authenticate against self hosted kafka cluster and not MSK. Can i provide keystore(s) via custom plugin zip?