question Re: Nodes with different OS Versions in Support Questions

Nodes with different OS Versions

chriswalton007 — Wed, 04 Apr 2018 13:52:44 GMT

Hi,

Is it possible to have nodes within the cluster running different versions of Centos? Would this require any extra steps when upgrading?

Re: Nodes with different OS Versions

chriswalton007 — Mon, 09 Apr 2018 08:43:01 GMT

Came across this article: https://community.cloudera.com/t5/Cloudera-Manager-Installation/How-to-do-an-OS-upgrade-on-15-nodes-cloudera-cluster-from-centos/td-p/36537

Which appears to show how this can be done.

Re: Nodes with different OS Versions

RajeshBodolla — Tue, 10 Apr 2018 09:24:12 GMT

Yes you can. You just need the parcels for both the versions. But you will face an issue when upgrading all CM agents at the same time as CM accepts one URL for upgrading the packages. You can overcome this by manually upgrading the CM Agents on the hosts that have the issue.

Re: Nodes with different OS Versions

Fawze — Wed, 29 May 2019 11:27:44 GMT

@chriswalton007 Hi Chris, i'm unbale to reach the limk, do you mind share the exact steps you managed to overcome this?

Thanks in advance.

@RajeshBodolla What about the CDH parcels, for other extra custom parcels like anaconda and airflow, i will face the same issue.

what about the NameNode and the Mysql?

Re: Nodes with different OS Versions

RajeshBodolla — Wed, 29 May 2019 11:31:23 GMT

@Fawze You can mention multiple parcel links in cloudera manager so it should not be an issue.

Re: Nodes with different OS Versions

Fawze — Wed, 29 May 2019 11:38:59 GMT

How i will choose which parcels to distribute to each node? or it will try
to distribute both parcels on the node and one of them will fail?

Re: Nodes with different OS Versions

chriswalton007 — Wed, 29 May 2019 12:20:59 GMT

We just added the nodes and the correct parcels are downloaded and installed automatically.

Re: Nodes with different OS Versions

RajeshBodolla — Wed, 29 May 2019 12:27:30 GMT

Clouder amanager would automatically distribute the parcels that the cluster requires.

Re: Nodes with different OS Versions

Fawze — Wed, 29 May 2019 12:31:59 GMT

so you installed the Cloudera manager agent manually and then the parcels
distributed automatically?

Did you face any issue?

Re: Nodes with different OS Versions

RajeshBodolla — Wed, 29 May 2019 12:42:51 GMT

If you install cloudera manager packages and start the agent, it will not distribute the parcels.

The parcels will be distributed only when you add the host to the cluster.

Re: Nodes with different OS Versions

Fawze — Wed, 29 May 2019 13:02:59 GMT

I'm using cloudera manager, once i added the node i need to provide the url
for the cloudera manager packages, once this step finish, an automatic step
kicked to distribute the parcels.