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General Troubleshooting

Wiki MarkupAmbari Server: Check /var/log/ambari-server/ambari-server.\[log\|out\] for errors.
Ambari Agent: Check /var/log/ambari-agent/ambari-agent.\[log\|out\] for errors.
Note that if Ambari Agent has any output in /var/log/ambari-agent/ambari-agent.out, it is indicative of a significant problem.

Services fail to start up

...

• and remove them :
  rpm -e <package name>

HTTP error 400 – Bad Request – during REST call (POST, PUT, DELETE) to Ambari server

Ambari Server now expects an additional HTTP header called "X-Requested-By" for all non-GET calls. The value can be set to anything. For example:

curl -i -H 'X-Requested-By: mycompany' -X POST -d '{"Clusters": {"version": "HDP-2.0.6"}}' --user admin:admin http://hadoop1.mycompany.com:8080/api/v1/clusters/cluster1

Note that there are some issues with Ambari current release 1.2.5 in case you have spaces in baseDN/managerDN. Please take a look at: https://issues.apache.org/jira/browse/ambari-3006^{Image Removed}. The fix will be available in 1.4.1 release of Ambari. In case you are running into issues and cant get rid of spaces in the managerDN/baseDN - keep reading.

I have created a jar with the patch applied on top of branch-1.2.5. The jar is posted at http://people.apache.org/~mahadev/ambari/ambari-server-1.2.5.17.jar^{Image Removed}.

Download the above jar and follow the following steps for fixing the issue:

• Stop ambari server using

ambari-server stop

• Replace the ambari server jar with the downloaded jar. Please backup the ambari-server jar before you overwrite in case you run into issues.

cp <download<downloaded_ambari_server_jar> /usr/lib/ambari-server/ambari-server-1.2.5.17.jar

• Restart Ambari Server

ambari-server start

This should fix the issue with spaces in LDAP dn names.