Delete All JournalNodes
You may need to delete any JournalNodes.
Prerequisites
Check to see if you need to delete JournalNodes, on the Ambari Server host:
curl -u <AMBARI_USER>:<AMBARI_PW> -H "X-Requested-By:
ambari" -i -X GET
<AMBARI_PROTO>://localhost:<AMBARI_PORT>/api/v1/clusters/<CLUSTER_NAME>/host_components?HostRoles/component_name=JOURNALNODE
If this returns an empty items array, you can go on to Delete the Additional NameNode.
Otherwise you must delete the JournalNodes.
To delete the JournalNodes:
Steps
On the Ambari Server host, run the following command:
curl -u <AMBARI_USER>:<AMBARI_PW> -H "X-Requested-By: ambari" -i -X DELETE <AMBARI_PROTO>://localhost:<AMBARI_PORT>/api/v1/clusters/<CLUSTER_NAME>/hosts/<JOURNALNODE1_HOSTNAME>/host_components/JOURNALNODE curl -u <AMBARI_USER>:<AMBARI_PW> -H "X-Requested-By: ambari" -i -X DELETE <AMBARI_PROTO>://localhost:<AMBARI_PORT>/api/v1/clusters/<CLUSTER_NAME>/hosts/<JOURNALNODE2_HOSTNAME>/host_components/JOURNALNODE curl -u <AMBARI_USER>:<AMBARI_PW> -H "X-Requested-By: ambari" -i -X DELETE <AMBARI_PROTO>://localhost:<AMBARI_PORT>/api/v1/clusters/<CLUSTER_NAME>/hosts/<JOURNALNODE3_HOSTNAME>/host_components/JOURNALNODEVerify that all the JournalNodes have been deleted. On the Ambari Server host:
curl -u <AMBARI_USER>:<AMBARI_PW> -H "X-Requested-By: ambari" -i -X GET <AMBARI_PROTO>://localhost:<AMBARI_PORT>/api/v1/clusters/<CLUSTER_NAME>/host_components?HostRoles/component_name=JOURNALNODEThis should return an empty
itemsarray.
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