THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
At times you may need to delete a service or all host components on a host. This article talks about how to do that using APIs. Be aware of losing data when performing any delete operations. Ensure that your data is backed up and decommissioning of nodes are performed as needed.
From 1.4.3 onwards you need to add "X-Requested-By" header to all curl calls.
E.g. curl -i -uadmin:admin -H "X-Requested-By: ambari" -d '{"HostRoles": { "state": "STARTED"}}' -X PUT 'http://localhost:8080/api/v1/clusters/c1/host_components?HostRoles/stale_configs=false
Removing a Service (2.1.
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Verified against releases 2.1.
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Note: These API calls do not uninstall the packages associated with the service and neither they remove the config or temp folders associated with the service components.
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curl -u admin:admin -H "X-Requested-By: ambari" -X GET http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME
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curl -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '{"RequestInfo":{"context":"Stop Service"},"Body":{"ServiceInfo":{"state":"INSTALLED"}}}' http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICE_NAME |
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curl -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '{"RequestInfo":{"context":"Stop Component"},"Body":{"HostRoles":{"state":"INSTALLED"}}}' http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/hosts/HOSTNAME/host_components/COMPONENT_NAME |
Stop all component instances (ensure correct values are provided for AMBARI_SERVER_HOST, SERVICE_NAME, COMPONENT_NAME) - just another way to stop Service members:
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curl -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '{"RequestInfo":{"context":"Stop All Components"},"Body":{"ServiceComponentInfo":{"state":"INSTALLED"}}}' http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICE_NAME/components/COMPONENT_NAME |
3. Delete the whole SERVICE
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curl -u admin:admin -H "X-Requested-By: ambari" -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME |
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curl -u admin:admin -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME |
Removing a Host (2.1.
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The preferred way to remove a host is to move the master services from the host, decommission the slave nodes and then remove the host after deleting all the host components. However, there are situations such as the host is lost and cannot be brought back online for graceful removal. Under this circumstances the following API calls can be used to clean up the host.
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curl -u admin:admin -H "X-Requested-By: ambari" -X GET http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/hosts/HOSTNAME |
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E.g. Delete DATANODE curl -u admin:admin -H "X-Requested-By: ambari" -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME/host_components/DATANODE |
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curl -u admin:admin -H "X-Requested-By: ambari" -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME
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