Hello @satvaddi  From the shared logs I see below error 2025-03-19 12:17:12,085 FATAL knox.gateway (GatewayServer.java:main(195)) - Failed to start gateway: org.apache.knox.gateway.services.ServiceLifecycleException: Public certificate for the gateway cannot be found with the alias invgcscdp71901.informatica.com. Please check the identity certificate alias. org.apache.knox.gateway.services.ServiceLifecycleException: Public certificate for the gateway cannot be found with the alias invgcscdp71901.informatica.com. Please check the identity certificate alias. It looks like the newly generated certificate does not have the alias name set as the host FQDN. Please verify the certificate alias name and update it in the Knox configuration at the following path: CM UI  => Knox => Configuration => Security - TLS Certificate Alias (Optional) ... View more

hi @Atlas  Hi Atlas, do you see any information in Atlas application logs? Please retry the API and share the stack trace from Atlas application logs. ... View more

Hi @Prith  Currently, RHEL 9.4 is not certified by any CDP version. The Cloudera support matrix will show only the certified version. You can try installing the latest version of CDP and CM. ... View more

Hi @therealsrikanth  I understand you want to enable Kerberos authentication in an open-source Hadoop cluster. Please refer to the following document to configure Kerberos authentication. https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SecureMode.html ... View more

@Mugarte10Seems to be an issue with Ambari DB, If you have the Ambari database back up, can you try restoring the Ambari database, Also take the backup of ambari DB of the current state. ... View more

Can you check database logs to see if there are any connection blocked messages? If possible, try restarting database service. ... View more

@sacindhiman85  Can you try moving /etc/ranger/admin/rangeradmin.jceks file to some backup location and restart ranger ... View more

@sacindhiman85  Can you check is db details are correct in ranger configs and make sure the db is up and running Also try moving /etc/ranger/admin/rangeradmin.jceks file to some backup location and restart ranger ... View more

@Mugarte10Can you confirm if you have made any changes, like decommissioning a node or upgrading the cluster?   ... View more