[AMBARI-17889] Bad error message if user has not performed ambari-server setup for jdbc driver before configuring custom DB

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.5.0
• Component/s: ambari-server
• Assignee: Vitaly Brodetskyi
• Reporter: Vitaly Brodetskyi
• Created: 25/Jul/16 17:15
• Updated: 15/Sep/16 17:03
• Resolved: 15/Sep/16 14:28

Description

While installing a cluster, I forgot to call:
ambari-server setup --jdbc-db=mysql --jdbc-driver=/usr/share/java/mysql-connector-java.jar

Check DB connection failed with:

2016-07-13 00:56:32,751 - There was an unknown error while checking database connectivity: cannot concatenate 'str' and 'NoneType' objects
Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/custom_actions/scripts/check_host.py", line 144, in actionexecute
    db_connection_check_structured_output = self.execute_db_connection_check(config, tmp_dir)
  File "/var/lib/ambari-agent/cache/custom_actions/scripts/check_host.py", line 285, in execute_db_connection_check
    jdbc_url = jdk_location + jdbc_driver_mysql_name
TypeError: cannot concatenate 'str' and 'NoneType' objects
2016-07-13 00:56:32,752 - Check db_connection_check was unsuccessful. Exit code: 1. Message: cannot concatenate 'str' and 'NoneType' objects

Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/custom_actions/scripts/check_host.py", line 506, in <module>
    CheckHost().execute()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 280, in execute
    method(env)
  File "/var/lib/ambari-agent/cache/custom_actions/scripts/check_host.py", line 206, in actionexecute
    raise Fail(error_message)
resource_management.core.exceptions.Fail: Check db_connection_check was unsuccessful. Exit code: 1. Message: cannot concatenate 'str' and 'NoneType' objects

Issue Links

• links to: review request