how to remove a host which include journal node component using ambari

Dimd — Thu, 30 Jun 2016 21:21:02 GMT

a host crashed which include journal node,but now ambari can not remove host which include jurnal node, anyone has i

Re: how to remove a host which include journal node component using ambari

sunile_manjee — Thu, 30 Jun 2016 23:00:36 GMT

@Dim Guy please take a look at documentation here.

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 host afterdeleting 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

See the property, "host_components" for all the host.

Sample:

Output: ... "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" } }] ...

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

Re: how to remove a host which include journal node component using ambari

vpoornalingam — Fri, 01 Jul 2016 02:41:24 GMT

@Dim Guy / @Sunile Manjee

It might be required to stop the component as well before Deleting the host components in the host:

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

Re: how to remove a host which include journal node component using ambari

sunile_manjee — Sun, 03 Jul 2016 10:01:17 GMT

@vpoornalingam I believe your right. Might actually be safer to stop first.

question how to remove a host which include journal node component using ambari in Archives of Support Questions (Read Only)

how to remove a host which include journal node component using ambari

Re: how to remove a host which include journal node component using ambari

Removing a Host (2.1.0)

Verified against releases 2.1.0

Re: how to remove a host which include journal node component using ambari

Re: how to remove a host which include journal node component using ambari