A server error has occurred. Send the following information to Cloudera.

[#1]

I'm using CM 5.2,

When i change the IP on my cluster , then restart CM, it wont detect my new IP address.

   Then i try to fix by edit /etc/cloudera-scm-agent/config.ini, but still don't work.

       TILL NOW, I STILL CAN ACCESS TO CLOUDERA MANAGER.

Then, i try to update coudera manager to 5.3, hope that the update can auto reconfig the IP, this is when i got the whole new error, i can access to CM, but the HOME, CLUSTER and HOST tab wont show anything and i got this error: 

A server error has occurred. Send the following information to Cloudera.

Path: http://192.168.6.10:7180/cmf/parcel/topLevelCount

Version: Cloudera Express 5.3.0 (#166 built by jenkins on 20141218-0505 git: 9ec4939d0a7b563597da611c675725916369a60d)

javax.persistence.PersistenceException:org.hibernate.exception.GenericJDBCException: Could not open connection
at AbstractEntityManagerImpl.java line 1387
in org.hibernate.ejb.AbstractEntityManagerImpl convert()

[#2 · Accepted solution]

> GenericJDBCException: Could not open connection

This implies Cloudera Manager is unable to connect to the database. If
you're using the embedded postgresql database, ensure it is running.
Visit the file /etc/cloudera-scm-server/db.properties. Use the
authentication creds in it and try to connect to the database
directly, like "psql -U user -p password database". Does it work?