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How to do an OS upgrade on cloudera cluster from Redhat 6 to Redhat 7

How to do an OS upgrade on cloudera cluster from Redhat 6 to Redhat 7

New Contributor

We have few 100+ node CDH clusters running on Redhat 6.5. What is the process to upgrade the entire cluster from Redhat 6.5 to Redhat 7?

2 REPLIES 2

Re: How to do an OS upgrade on cloudera cluster from Redhat 6 to Redhat 7

Super Guru

@rbodolla,

 

If you are referring to upgrading in place, in general:

 

- Follow RedHat instructions for upgrading OS in place: 

https://access.redhat.com/solutions/637583

 

- Install el7 CM/agent/daemon packages on the host after upgraded

- ensure el7 parcels are available for download/distribution.

 

Depending on your needs, you may want to decommission the host so that blocks are copied to another node (HDFS).  I would recommend that if you are undertaking this procedure, you plan well and also do a test by adding a node or testing with one as a trial.  There are bound to be small issues in various places.

 

I've never done it myself, so if anyone else has experience, it would be good to hear from them.

 

-Ben

Re: How to do an OS upgrade on cloudera cluster from Redhat 6 to Redhat 7

Contributor

For posterity, I will helpfully refer to the Cloudera documentation on the topic.

 

(Good work docs folks.  I love the evironment customization.)