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Posted to user@ambari.apache.org by Daniel Haviv <da...@gmail.com> on 2015/01/27 19:31:47 UTC

Managing an existing cluster

> Hi,
> We have a cluster that was manually installed using CDH rpms that we want to manage using Ambari.
> Is it possible to somehow manage an existing running cluster?
> 
> Thanks,
> Daniel

Re: Managing an existing cluster

Posted by Daniel Haviv <da...@gmail.com>.

I suspected so :)

Thank you.

Daniel

> On 27 בינו׳ 2015, at 21:41, Benoit Perroud <be...@noisette.ch> wrote:
> 
> Not really.
> 
> What you can do though is replace few components at the time, like starting with zookeeper, HDFS, etc and reduce the downtime.
> 
> CDH5.3 and HDP 2.2 /should/ (no guarantee here) be protocol compatible with HDFS, which means you could be able to stop HDFS from CDH, start with the same fsimage and datanode datadir the HDP version and run finalize metadata upgrade, saving lots of migration time (i.e. copying all the data from CDH:hftp to HDP:hdfs, requiring double capacity).
> 
> Benoit
> 
> 
> 2015-01-27 19:31 GMT+01:00 Daniel Haviv <da...@gmail.com>:
>>> Hi,
>>> We have a cluster that was manually installed using CDH rpms that we want to manage using Ambari.
>>> Is it possible to somehow manage an existing running cluster?
>>> 
>>> Thanks,
>>> Daniel
>

Re: Managing an existing cluster

Posted by Benoit Perroud <be...@noisette.ch>.

Not really.

What you can do though is replace few components at the time, like starting
with zookeeper, HDFS, etc and reduce the downtime.

CDH5.3 and HDP 2.2 /should/ (no guarantee here) be protocol compatible with
HDFS, which means you could be able to stop HDFS from CDH, start with the
same fsimage and datanode datadir the HDP version and run finalize metadata
upgrade, saving lots of migration time (i.e. copying all the data from
CDH:hftp to HDP:hdfs, requiring double capacity).

Benoit


2015-01-27 19:31 GMT+01:00 Daniel Haviv <da...@gmail.com>:

> Hi,
> We have a cluster that was manually installed using CDH rpms that we want
> to manage using Ambari.
> Is it possible to somehow manage an existing running cluster?
>
> Thanks,
> Daniel
>
>