upgrade CM and CDH

[#1]

what are the things to consider before upgrade cm and cdh.

what are the pre requisite to complete before upgrade cm and cdh please suggest best way to upgrade cm and cdh in production cluster.

Thnks in Advance

[#2 · Accepted solution]

Hi @Tarique,

This is a good place to start planning:

https://www.cloudera.com/documentation/enterprise/latest/topics/cm_ag_upgrading_cm.html

That should cover most of what you need.  If you have questions, let us know.

[#3 · Accepted solution]

Hi @Tarique,

This is a good place to start planning:

https://www.cloudera.com/documentation/enterprise/latest/topics/cm_ag_upgrading_cm.html

That should cover most of what you need.  If you have questions, let us know.

[#4]

Hi,

We are planning for a CDH upgrade now.

Which is the latest stable version in CDH out of 5.13.3 or 5.14.2?

[#5 · Accepted solution]

Current release is 5.14.2 , best practices is select n-1 (where n is the latest) 

Using Parcels is mostly recommended. Refer the attached Upgrade document. 

Thanks 

-Bharat

[#6]

Thanks Bharatm.

But the doc has only covered upto 5.9 upgrade.

Do u have any updated doc which is covering upgrade from 5.8 to 5.14.1 ?

[#7]

Will check if I have new version of the upgrade document.  There won't be much changes other than the target files, the upgrade is preety easy unless if you have very complex cluster. 

How big and complex is your cluster ? HA / Non HA  ? And Are you going by packages/Parcels ? 

Will be happy to help if you have any more questions. 

Thanks 

-Bharat

[#8]

Hey, its approx 40 node cluster. I see Parcels are easy to upgrade. So thought of using them.

[#9]

Ok Great.  I read today Cloudera Manager 5.14.1 release affected #  XSS vulnerability in Cloudera Manager

Check the Technical Service Bulletin 2018-285 (TSB) 

Thanks 

-Bharat

[#10]

it's depend from which CDH version you are upgrading ...

You need to have a look at the services you cluster includes and if it's version was changed for example: Spark, HDFS, Yarn and So on: for example i upgraded my cluster from 5.5.4 to 5.13.0 i just cared about the spark jobs since spark version was changed and there was a need to change the jobs dependancy, and minor changed we did in hive tables refreshment.

I would recommend you to go to Major version -1 so to use 5.13 and use the latest minor version so i recommend 5.13.3