Unable to Login to UI after upgrade from 4.16.01 to 4.16.05

[adevegowda]

After the upgrade of LDAP from 4.16.01 to 4.16.05, we are seeing the following issues:

1. Unable to login to edge UI

   Unknown username and password combination.
   

2. Unable to start management server which is in dead state.

[adevegowda · Accepted solution]

1. Checked the system.log of Management server and noticed the following exception in it:

   2017-12-09 02:08:12,521 main ERROR KERNEL - MicroKernel.deployAll() : MicroKernel.deployAll() : Error in deploying the deployment : ZooKeeperService 
   com.apigee.rest.framework.security.UnAuthorizedException: Invalid EmailId Password for authentication 
   at com.apigee.rbac.datastore.ldap.LdapContextFactory.logAndThrowAuthnFailedException(LdapContextFactory.java:149) ~[rbac-1.0.0.jar:na] 
   at com.apigee.rbac.datastore.ldap.LdapContextFactory.createDirCtx(LdapContextFactory.java:91) 
   ...<snipped>
   	

2. The stacktrace indicated that we are passing incorrect email id/password to LDAP from the management server.
3. During the upgrade of LDAP, the password is changed to a new password.
4. However, this new password was not updated in the management server. The management server was still using the old password and as a result the authentication failed.
5. Updated the new password on the Management Server node:

   /<inst_root>/apigee/apigee-service/bin/apigee-service edge-management-server store_ldap_credentials -p newPword
   

6. After this, the management server started successfully without any errors.
7. We were also able to login to UI successfully.