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 (1.4.1)
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1. Note all the host components associated with the service.
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curl -u admin:admin -X GET http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME
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...
Stop the whole service (ensure correct values are provided for AMBARI_SERVER_HOST, SERVICE_NAME):
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curl -u admin:admin -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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Stop individual components (ensure correct values are provided for AMBARI_SERVER_HOST, HOSTNAME, COMPONENT_NAME):
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curl -u admin:admin -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
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3. Delete the whole SERVICE
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curl -u admin:admin -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME
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...
1. Note all the host components associated with the service.
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curl -u admin:admin -X GET http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME
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...
Stop the whole service (ensure correct values are provided for AMBARI_SERVER_HOST, SERVICE_NAME):
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curl -u admin:admin -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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Stop individual components (ensure correct values are provided for AMBARI_SERVER_HOST, HOSTNAME, COMPONENT_NAME):
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curl -u admin:admin -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
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3. Put MASTER and SLAVE components into MAINTENANCE mode
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curl -u admin:admin -X PUT -d '{"HostRoles": {"state": "MAINTENANCE"}}' http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/hosts/HOSTNAME/host_components/COMPONENTNAME
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4. Delete MASTER and SLAVE components
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curl -u admin:admin -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/hosts/HOSTNAME/host_components/COMPONENTNAME
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5. Delete the whole SERVICE
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curl -u admin:admin -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/services/SERVICENAME
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1. Get a list of host components mapped to the host
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curl -u admin:admin -X GET http://AMBARI_SERVER_HOST:8080/api/v1/clusters/c1/hosts/HOSTNAME
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See the property, "host_components" for all the host.
Sample:
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Output:
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"host_components" : [
{
"href" : "http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME/host_components/DATANODE",
"HostRoles" : {
"cluster_name" : "CLUSTERNAME",
"component_name" : "DATANODE",
"host_name" : "HOSTNAME"
}
},
{
"href" : "http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME/host_components/GANGLIA_MONITOR",
"HostRoles" : {
"cluster_name" : "CLUSTERNAME",
"component_name" : "GANGLIA_MONITOR",
"host_name" : "HOSTNAME"
}
}]
...
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2. DELETE all host components mapped to this host
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E.g. Delete DATANODE
curl -u admin:admin -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME/host_components/DATANODE
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3. DELETE the host
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curl -u admin:admin -X DELETE http://AMBARI_SERVER_HOST:8080/api/v1/clusters/CLUSTERNAME/hosts/HOSTNAME
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