Start the Ambari Server
Run the following command on the Ambari Server host:
ambari-server start
To check the Ambari Server processes:
ambari-server status
To stop the Ambari Server:
ambari-server stop
![[Note]](../common/images/admon/note.png) | Note |
|---|---|
If you plan to use an existing database instance for Hive or for Oozie, you must prepare those databases before installing your Hadoop cluster. |
On Ambari Server start, Ambari runs a database consistency check looking for issues. If any issues are found, Ambari Server start will abort and a message will be printed to console “DB configs consistency check failed.” More details will be written to the following log file:
/var/log/ambari-server/ambari-server-check-database.log
You can force Ambari Server to start by skipping this check with the following option:
ambari-server start --skip-database-check
If you have database issues, by choosing to skip this check, do not
make any changes to your cluster topology or perform a cluster upgrade until you correct the
database consistency issues. Please contact Hortonworks Support and provide the
ambari-server-check-database.log output for assistance.
Next Steps