question Re: Can anyone tell me REST API to put the host component in maintenance mode through REST API? in Archives of Support Questions (Read Only)

Can anyone tell me REST API to put the host component in maintenance mode through REST API?

prasad4u_com — Tue, 08 Mar 2016 05:44:11 GMT

I tried this one..

curl -u admin:OpsAm-iAp1Pass -H "X-Requested-By:ambari" -i -X PUT -d '{"RequestInfo":{"context":"Turn on Maintenance mode"}, "Body":{"ServiceInfo":{"maintenance state":"ON"}}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/serf120int.etops.tllsc.net/host_components/DATANODE

Result :

HTTP/1.1 200 OK User: admin Set-Cookie: AMBARISESSIONID=1acil15v0h4ve2hk9a1ac5gux;Path=/;HttpOnly Expires: Thu, 01 Jan 1970 00:00:00 GMT Content-Type: text/plain Content-Length: 0 Server: Jetty(8.1.17.v20150415)

I checked in ambari dashboard, nothing happend..

Re: Can anyone tell me REST API to put the host component in maintenance mode through REST API?

abajwa — Mon, 19 Aug 2019 10:58:09 GMT

Use the below command instead. Note that to check whether datanode was put into maintenance mode, you will need to go to the Hosts tab in Ambari, navigate to the host running datanode and look for the maintenance icon there (ie the icon won't show up under Ambari > HDFS > Datanode because its a 'slave' component)

curl -u admin:OpsAm-iAp1Pass -H "X-Requested-By:ambari" -i -X PUT -d '{"RequestInfo":{"context":"Turn On Maintenance Mode For DataNode"}, "Body":{"HostRoles":{"maintenance_state":"ON"}}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/serf120int.etops.tllsc.net/host_components/DATANODE

Re: Can anyone tell me REST API to put the host component in maintenance mode through REST API?

prasad4u_com — Tue, 08 Mar 2016 23:11:03 GMT

@Ali Bajwa I tried same for NODEMANAGER, i am getting http 200 code. Its not getting excuted. Here is my command. Can you please tell me is there anything wrong?

curl -u admin:OpsAm-iAp1Pass -H "X-Requested-By:ambari" -i -X PUT -d '{"RequestInfo":{"context":"Stop NODEMANAGER"}, "Body":{"HostRoles":{"state":"INSTALLED"}}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/serf120int.etops.tllsc.net/host_components/NODEMANAGER

Thank you in advance.

Re: Can anyone tell me REST API to put the host component in maintenance mode through REST API?

abajwa — Thu, 10 Mar 2016 01:54:28 GMT

You are invoking the API to stop nodemanager (not put in maintenance mode).

To put it in maintenance mode, try below:

curl -u admin:OpsAm-iAp1Pass -H "X-Requested-By:ambari"-i -X PUT -d '{"RequestInfo":{"context":"Turn On Maintenance Mode For NodeManaager"}, "Body":{"HostRoles":{"maintenance_state":"ON"}}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/serf120int.etops.tllsc.net/host_components/NODEMANAGER