10-06-2017 08:33 AM
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?
10-06-2017 12:29 PM
If you are referring to upgrading in place, in general:
- Follow RedHat instructions for upgrading OS in place:
- 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.
02-28-2019 03:05 PM
For posterity, I will helpfully refer to the Cloudera documentation on the topic.
(Good work docs folks. I love the evironment customization.)