Removing a Service (2.1.0)

Verified against releases 2.1.0

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. 

Before the PUT or DELETE calls, you can do a GET to ensure that the API is referring to a valid resource.

1.Note all the host components associated with the service.

curl -u admin:admin -H "X-Requested-By: ambari"-X GET  http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME

2.Ensure the service is stopped(you can use the Ambari Web-UI to stop the service as well)

Stop the whole service(ensure correct values are provided for AMBARI_SERVER_HOST, SERVICE_NAME):

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

Stop individual components (ensure correct values are provided for AMBARI_SERVER_HOST, HOSTNAME, COMPONENT_NAME): 

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:

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

curl -u admin:admin -H "X-Requested-By: ambari" -X DELETE   http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME

Removing a Host (2.1.0)

Verified against releases 2.1.0

The preferred way to remove a host is to move the master services from the

host, decommission the slave nodes and then remove the hostafterdeleting

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. 

1.Get a list of host components mapped to the host

curl -u admin:admin -H "X-Requested-By: ambari" -X GET  http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/hosts/HOSTNAME

2.DELETE all host components mapped to this host

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

3.DELETE the host

curl -u admin:admin -H "X-Requested-By: ambari" -X DELETE   http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME