Re: I tried to stop Node manager through REST API,...

prasad4u_com · ‎11-14-2016

prasad4u_com · ‎10-03-2016

prasad4u_com · ‎08-15-2016

prasad4u_com · ‎08-04-2016

Please find the attachments.nnui1.pngtop-and-dfsadmin-report.txt

prasad4u_com · ‎08-04-2016

prasad4u_com · ‎07-27-2016

Thank you. @bmadala

prasad4u_com · ‎07-27-2016

I am asking about user limit factor in yarn queue manager? if we click on created queue under root, it shows user limit factor. what is the significance of it?

prasad4u_com · ‎07-27-2016

@Neeraj Sabharwal @Artem Ervits Can anyone help me with explanation? if i put user limit factor as 3.5, what it will do?

prasad4u_com · ‎07-27-2016

prasad4u_com · ‎06-30-2016

Thank you @Benjamin Leonhardi

prasad4u_com · ‎06-30-2016

@Artem Ervits @Neeraj Sabharwal Can anyone of you guys help me ?

prasad4u_com · ‎06-30-2016

prasad4u_com · ‎06-14-2016

@Paula Morais I got the solution for this. After decommissioning the node, first you need to check /etc/hosts file whether decommissioned host is present or not on Name node host. I am sure, it will be there, try to delete that decommissioned host name and restart Namenodes, later check /etc/hosts file. You need to restart the HDFS and Mapreduce i believe, anyway it will show you on ambari dash board which services need to be restarted. Thank you and let me know it is worked for you or not. It worked for me.

prasad4u_com · ‎03-16-2016

@vpoornalingam We are having a small cluster with 30 nodes, in which 18 are data nodes. We assigned 15GB for ambari-server. we deployed our packages through slider in hadoop cluster as a long running jobs. We are not using any ecosystems. Thank you. For how many days, we need to store the AMS data? Is there any specific calculation for that?

prasad4u_com · ‎03-15-2016

@Terry Padgett Thank you.I am asking about ambari server backup, which is having metrics data from the last 2 months and captured most of the disk space. Let me know the process how to backup the metrics data and ambari server up and running without having downtime. Is there any downtime while doing the backup?

prasad4u_com · ‎03-15-2016

Presently, we are running ambari server on ec2 instance and using rds instance i.e Mysql as database. Ambari server's disk space is 80% full now. What is the best way to take backup and ambari server up and running. Can anyone please tell me the procedure?

prasad4u_com · ‎03-10-2016

@Shivaji Thank you.

prasad4u_com · ‎03-10-2016

@Geoffrey Shelton Okot we are writing a multi-node application that "heals" itself when a node is lost. In order to test the "healing" process we need to kill one of the node containers. Is there a way to do this? Is there any application in the Hadoop ecosystem that does this? We are running our packages through slider in hadoop cluster as long running jobs.

prasad4u_com · ‎03-10-2016

@Geoffrey Shelton OkotI am asking to kill the container directly. I am aware of killing application. Thank you.

prasad4u_com · ‎03-10-2016

prasad4u_com · ‎03-09-2016

@Artem Ervits I am still wondering, whatever we will do through ambari, we can do them through REST api right? Why REST api is having limitiation for RECOMMISSION? Is there any theoretical reason?

prasad4u_com · ‎03-08-2016

curl -u admin:password -i -H 'X-Requested-By: ambari' -X PUT -d ' {"RequestInfo":{"context":"Stop NODEMANAGER"}, "Body": {"HostRoles": {"state": "INSTALLED"}}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/$hostname/host_components/NODEMANAGER

prasad4u_com · ‎03-08-2016

It got worked for me with the following command :. curl -u admin:password -i -H 'X-Requested-By: ambari' -X PUT -d ' {"RequestInfo":{"context":"Stop NODEMANAGER"}, "Body": {"HostRoles": {"state": "INSTALLED"}}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/$hostname/host_components/NODEMANAGER I dont know what is the difference between both commands?

prasad4u_com · ‎03-08-2016

Here my command : curl -u admin:Password -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.

prasad4u_com · ‎03-08-2016

@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.

prasad4u_com · ‎03-07-2016

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..

prasad4u_com · ‎03-07-2016

curl -u admin:password -i -H 'X-Requested-By:ambari' -X PUT –d'{"RequestInfo":{"context":"Stop DATANODE"},"Body":"HostRoles":{"state":"INSTALLED"}}' http://viceroy10:8080/api/v1/clusters/et_cluster/serf120int.etops.tllsc.net /host_components/DATANODE Error : curl: (3) [globbing] nested braces not supported at pos 18 HTTP/1.1 404 Not Found User: admin et-Cookie: AMBARISESSIONID=1mc7f72vpbasxqwkzdiyphjv2;Path=/;HttpOnly Expires: Thu, 01 Jan 1970 00:00:00 GMT Content-Length: 0 Server: Jetty(8.1.17.v20150415) curl: (3) <url> malformed If i use the curl command without using request info, it is working fine. curl -u admin:password -i -H 'X-Requested-By: ambari' -X PUT -d '{"HostRoles": {"state": "INSTALLED"}}' http://viceroy10:8080/api/v1/clusters/et_cluster/hosts/serf120int.etops.tllsc.net/host_components/DATANODE What is the reason for failing above curl command?

prasad4u_com · ‎03-04-2016

@Artem Ervits I tried to recommission by using above curl command. I got the following error.. "status" : 500, "message" : "An internal system exception occurred: Unsupported action RECOMMISSION for Service: YARN and Component: RESOURCEMANAGER"

prasad4u_com · ‎03-03-2016

@Artem Ervits Mostly, it wouldn't work because i didn't see any dfs.include and yarn.include parameters in configurations. 🙂

prasad4u_com · ‎03-03-2016

Thank you @Artem Ervits I would like to give a try with the above curl commands, will post the result.

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