@Ayyavaru Typically there is no external steps needed from CM side as CM only needs DB to be up so it depends on your plan honestly. However I would suggest you to take BACKUP of CM database for safe side [1] as well as plan downtime for this activity. You can use mysqldump to back up databases without having to shut them database down (see https://dev.mysql.com/doc/refman/5.7/en/mysqldump-sql-format.html). However, to ensure you get a good back, you should make sure there is no activity. i.e. you can get the back up by stopping the Cloudera manager server or any service for the database you are backing up. We strongly encourage that you consult your DBA or database vendor. After that you have to check the db.properties is rightly pointed to the database configured for CM. Hope this helps.  [1]https://docs.cloudera.com/documentation/enterprise/latest/topics/cm_ag_backup_dbs.html#concept_tyh_rmq_bl ... View more

@Pottie As per my you just have to install the krb packages on the new host rest will be fine and will be taken care by itself while adding host.  ... View more

@vidanimegh what java version you are using? This seems you are hitting a well known issue with java.  Cloudera product releases using one of the following JDK versions:  OpenJDK 1.8 u242 and later updates(example u252, u262 etc)  OpenJDK 11.0.6 and later updates  Oracle JDK 8u241 and later updates are affected by this. Below are the instructions to mitigate this issue.     Instructions: On all impacted nodes, this issue has been solved pursuant to implementing the steps below based on the environment. Edit the java.security file located in the active JDK on each node. You can find this file at one of the following locations:  <JAVA_HOME>/jre/lib/security/  <JAVA_HOME>/conf/security  Add or alter the sun.security.krb5.disableReferrals parameter so that it is set to true: sun.security.krb5.disableReferrals=true This change disables the new feature addition in the upgraded JDK release and no longer sets the bit in the AS-REQ which advertises the Name Type. This effectively disables the feature additions for RFC-6806. ... View more

@Hotty I agree with @aakash_nand there is no easy guidelines available by which you can configure.    However you can use this reference if you want Presto Plugin in Ranger it may give you a good start.  https://cwiki.apache.org/confluence/display/RANGER/Presto+Plugin ... View more