?Have you stopped the agent running on the host? If not then it will
re-register.
After stopping the agent, delete the host from api/v1/hosts/<hostname> as well.
________________________________
From: Kartik Mathur <kar...@bluedata.com>
Sent: Thursday, September 15, 2016 11:43 PM
To: user@ambari.apache.org
Subject: Unable to delete host from ambari using API (HDP2.4 with Ambari 2.2)
I have 7 nodes HDP 2.4 with ambari 2.2 cluster -
This is the closest document that I am able to find for deleting host using
APIs.
My host has these services running -
1) Zookeeper_server
2)DATANODE
3)NODEMANAGER
4)RegionServer
5)FLUME
1) I first decommision data and node manager using this -
curl -u admin:admin -i -H 'X-Requested-By: ambari' -X POST -d '{
"RequestInfo":{ "context":"Decommission DataNode", "command":"DECOMMISSION",
"parameters":{ "slave_type":"DATANODE", "excluded_hosts":"bluedata-69.bdlocal"
}, "operation_level":{ "level":"HOST_COMPONENT", "cluster_name":"h2" } },
"Requests/resource_filters":[ { "service_name":"HDFS",
"component_name":"NAMENODE" } ] }'
http://10.35.229.2:8080/api/v1/clusters/h2/requests
2)Next I stop and delete all components (listed above, which I am successfully
able to)
3) Strange thing happens after this -
There is a random behavior on ambari UI where we sometimes see this host and
sometimes not , besides now if I try to delete host from ambari API it gives me
server error and tells host does not exist!! , however I can still go on UI and
delete the host.
All I wanted to do is decommision data node and delete a host in a clean way
using ambari APIs , please assist
Thanks
Kartik
