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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

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• Click on the Retry button. In most cases, this will solve install failures due to package install problems due to intermittent software repository availability (i.e., "No more mirrors to retry").

Install Wizard failed with warning during Start/Test phase

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• 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. 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.

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 <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.