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  1. Ambari
  2. AMBARI-25254

The Cluster Install Wizard fails MariaDB (MySQL) connection test

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Critical
    • Resolution: Unresolved
    • Affects Version/s: 2.7.3
    • Fix Version/s: None
    • Component/s: ambari-web
    • Labels:
      None
    • Environment:

      CentOS 7.6

      MariaDB 5.5.60

      mariadb-java-client 2.4.1

      Description

      Installing on CentOS 7 by following the documentation.

      I arrive at the Customize Services -> DATABASES -> RANGER page and do the required configuration for my MariaDB instance using the mariadb-java-client-2.4.1. Specifically, I update the Driver class name to: org.mariadb.jdbc.Driver

      Pressing the Test Connection button I get "Connection Failed" with this stdout:

       

      2019-04-16 16:52:50,190 - Host checks started.
      2019-04-16 16:52:50,190 - Check execute list: db_connection_check
      2019-04-16 16:52:50,191 - DB connection check started.
      WARNING: File /var/lib/ambari-agent/cache/DBConnectionVerification.jar already exists, assuming it was downloaded before
      WARNING: File /var/lib/ambari-agent/cache/mariadb-java-client-2.4.1.jar already exists, assuming it was downloaded before
      2019-04-16 16:52:50,192 - call['/usr/lib/jvm/java-1.8.0/bin/java -cp /var/lib/ambari-agent/cache/DBConnectionVerification.jar:/var/lib/ambari-agent/cache/mariadb-java-client-2.4.1.jar -Djava.library.path=/var/lib/ambari-agent/cache org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://opher-dev7.radcom.co.il:3306" "root" [PROTECTED] com.mysql.jdbc.Driver'] {}
      2019-04-16 16:52:50,284 - call returned (1, 'ERROR: Unable to connect to the DB. Please check DB connection properties.\njava.lang.ClassNotFoundException: com.mysql.jdbc.Driver')
      2019-04-16 16:52:50,284 - DB connection check completed.
      2019-04-16 16:52:50,285 - Host checks completed.
      2019-04-16 16:52:50,285 - Check db_connection_check was unsuccessful. Exit code: 1. Message: ERROR: Unable to connect to the DB. Please check DB connection properties.
      java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
      
      Command failed after 1 tries
      

      Note that the wizard is wrongly trying to load the

      com.mysql.jdbc.Driver

      class!

       

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            • Assignee:
              Unassigned
              Reporter:
              ophers Opher Shachar
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              Dates

              • Created:
                Updated: