Hi Darpan,
I suspect that the curl call to delete KNOX only removed it from some of the
database tables.
Removing a services does not make any modifications to the actual agents, such
as removing bits and configs.
If you re-add that service you may have to make sure that no other tables have
references to it. E.g.
DELETE FROM hostcomponentstate WHERE service_name IN ('KNOX');
DELETE FROM hostcomponentdesiredstate WHERE service_name IN ('KNOX');
DELETE FROM servicecomponentdesiredstate WHERE service_name IN ('KNOX');
DELETE FROM servicedesiredstate WHERE service_name IN ('KNOX');
DELETE FROM clusterservices WHERE service_name IN ('KNOXr');
Thanks,
Alejandro
From: Darpan Patel <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Date: Tuesday, December 8, 2015 at 7:32 AM
To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>,
"[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: Issue removing and re-adding the components in Ambari
Hi folks,
I am running Version 2.1.2 of Ambari , HDP 2.3 on multinode cluster.
I was facing the issues in Knox component so decided to remove the service and
re-install it.
So I removed issued following command and it disappeared through Ambari web
portal.
// valid admin
curl -v -u admin:Ambari-AdminPassword -H "X-Requested-By:ambari" -X DELETE
"http://AMBARI_HOST:8080/api/v1/clusters/SecureCluster/services/KNOX";
However when I check in the /usr/hdp/2.3.2.0-2950 directory I found that
knox-server and it's directories were not removed. I manually deleted this
directory and re-initiated the Knox setup through Ambari. It goes up to step 6
and shows a popup saying : Internal Server error.
When I check the Ambari-server logs it looks like service is already present.
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services -
2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: duplicate key
value violates unique constraint "clusterservices_pkey"
Detail: Key (service_name, cluster_id)=(KNOX, 2) already exists.
Error Code: 0
Call: INSERT INTO clusterservices (service_name, service_enabled, cluster_id)
VALUES (?, ?, ?)
bind => [3 parameters bound]
Query:
InsertObjectQuery(org.apache.ambari.server.orm.entities.ServiceDesiredStateEntity@fadf9954)
at
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:340)
at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.processExceptionForCommError(DatabaseAccessor.java:1611)
at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:898)
at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:962)
at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:631)
at
org.eclipse.persistence.internal.databaseaccess.ParameterizedSQLBatchWritingMechanism.executeBatch(ParameterizedSQLBatchWritingMechanism.java:149)
at
org.eclipse.persistence.internal.databaseaccess.ParameterizedSQLBatchWritingMechanism.executeBatchedStatements(ParameterizedSQLBatchWritingMechanism.java:134)
at
org.eclipse.persistence.internal.databaseaccess.ParameterizedSQLBatchWritingMechanism.appendCall(ParameterizedSQLBatchWritingMechanism.java:82)
.......
Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value
violates unique constraint "clusterservices_pkey"
Detail: Key (service_name, cluster_id)=(KNOX, 2) already exists.
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2161)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1890)
What is the way around? Am I supposed to manually remove the Ambari related
database/tables, in which scenario which db/table should we update manually?
Regards,
DP
