批改cloudera manager管理主机名（转）

修改cloudera manager管理主机名（转）

I installed the Cloudera Manager 4 on a 1GbE default setup on eth0/bond0 and now I need to use 10GbE or Infiniband IB or 40GbE without the reinstall. How I did it!!

?The assumptions here are that you already have a CM 4.x already installed with the default embedded postgres DB on a linux server
. If you want to learn how-to just ask...?Let's start here where I have a 3 cluster setup with yosemite001 - yosemite003??hostname = yosemite00[1-3].somedomain.com = CM Installed on 1GbE?

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Shutdown all servicesservice cloudera-scm-agent stop on all nodes?service cloudera-scm-server stop on CM server

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From here if you have a paid or supported version, You are about to lose it or maybe they say "Cool good job!!"? proceed at your own risk...from the CM Serveras root su – postgres (If you have installed on a different database then login using that credentials)

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psql -h localhost -p 7432 -U scm

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à?When asked for the password open another terminal and run

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[root@yosemite001 ~]# grep password /etc/cloudera-scm-server/db.properties

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com.cloudera.cmf.db.password=TVkDZxuNCw

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paste the password & you should see the scm prompt

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scm=>? select host_id,host_identifier,name,ip_address from hosts;??-->?Check the current config and save the values in a file/notepad you will need this if you need to flip back.?

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host_id |??? host_identifier??? |???????? name????????? |?? ip_address

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---------+-----------------------+-----------------------+----------------

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?????? 2 | yosemite001.somedomain.com |?yosemite001.somedomain.com | 192.168.0.11

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?????? 3 | yosemite002.somedomain.com |?yosemite002.somedomain.com | 192.168.0.12

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?????? 4 | yosemite003.somedomain.com |?yosemite003.somedomain.com | 192.168.0.13

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(3 rows)

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scm=> update hosts set (host_identifier,name,ip_address) = ('yosemite001-10g.somedomain.com','yosemite001-10g.somedomain.com','192.168.10.11') where host_id=2;

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UPDATE 1

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Update all the other rows.

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Check if the updates went through

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scm=>? select host_id,host_identifier,name,ip_address from hosts;

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host_id |???? host_identifier?????????????????????? |?????????? name?????????????????????????????????? |?? ip_address

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---------+-------------------------------------+---------------------------------------+----------------

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?????? 3 | yosemite002.somedomain.com??? | yosemite002.somedomain.com??? | 192.168.0.12

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?????? 4 | yosemite003.somedomain.com??? | yosemite003.somedomain.com??? | 192.168.0.13???????2 |?yosemite001-somedomain.com | yosemite001-ib.somedomain.com | 192.168.10.11(3 rows)

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Exit the tool ?“\q;”

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edit the /etc/cloudera-scm-agent/config.ini and update the server and the listen ip & hostname section on all nodes to the new interface ip & address

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edit /etc/sysconfig/network with the new hostname for the interface

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run hostname yosemite001-10g (Update all hostnames on the servers)

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run “exec bash” and verify the hostname change is done

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Run on the CM Server

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chkconfig cloudera-scm-server on

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service cloudera-scm-server start

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Run the following on all the nodes

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chkconfig cloudera-scm-agent on

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service cloudera-scm-agent start on all the nodes

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Login to the GUI verify the host changes and “Good health”

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Force CM to rerun the configuration to register the changes (mimic changes and revert to force CM a rerun of config )

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Go to the hdfs->system-wide config edit/changes and make any minimal changes and save and revert back to original and save

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Do the same for mapreduce as well

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Restart the services

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Verify the client functionality by running Terasort.

转自： http://bigdata-helpline.blogspot.com/2013/03/change-ip-or-hostname-for-already.html

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另外两篇修改主机名文章：

https://groups.google.com/a/cloudera.org/forum/#!msg/scm-users/m2U9m4BfH0w/lGoq_UvOs-oJ

https://groups.google.com/a/cloudera.org/forum/#!topic/scm-users/eyaN5p5cl8o

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