nodetool-no-pass status command on both primary and worker nodes will show that all nodes are up and running.Reviewing the runtime and Cassandra logs at /var/log/vmware/loginsight/ will reveal certificate-related errors, as illustrated below.
runtime.log[2025-06-12 09:15:57.626+0000] ["netty-event-loop-67"/##.###.###.# ERROR] [play.core.server.netty.PlayRequestHandler] [Exception caught in Netty]io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: Received fatal alert: unknown ca
cassandra.log2025-06-12T09:28:40,252 AbstractChannelHandlerContext.java:311 - An exception 'java.lang.NullPointerException' [enable DEBUG level for full stacktrace] was thrown by a user handler's exceptionCaught() method while handling the followingio.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: java.lang.Unknown_ca
Aria Operations for logs 8.18.x
This can cause if the admin account password is changed and when it's integrated to any other Endpoints end up locking it
This can occur be due to anomalies in the custom certificates.
Note: Ensure that snapshots of all nodes (both primary and worker nodes) are securely taken before making any changes.
To resolve the issue, please refer to the following Knowledge Base (KB) articles to unlock the account:
Error when trying to check the status of the local user account
"FAILED: Unable to get user data. Possible Cassandra is down" - Aria Operations for Logs
If the above steps does not resolve the issue, please proceed with the following steps to switch to self-signed certificates:
Generate a self-signed certificate and install it by following the instructions in this KB article.
Once the self-signed certificate is successfully applied, the admin account will be unlocked.
If you wish to revert to using custom (CA-signed) certificates afterward:
Generate a new Certificate Signing Request (CSR) using this documentation.
Submit the CSR to a trusted Certificate Authority (CA), and request that the signed certificate be encoded in PEM format.
Once you receive the signed certificate, upload and install it by following this documentation.