topic Re: Identify Primary and Secondary hosts in Cluster Environement in Administration and Deployment

Identify Primary and Secondary hosts in Cluster Environement

sudipta_goswami — Fri, 13 May 2016 02:01:11 GMT

Hi Gurus,

Is there any way we can trace which one to be the primary and secondary nodes in a clustered environment. This question is for all the tiers when we have clustered deployment.

So I want to know which is the

1. Primary Metadata node

2. Primary Mid Tier node

3. Primary Compute node

I understand that during the installation there should be many documents made available. But still is there any way I can figure it out,

Please shed some light on this.

Regards,

Sudipta.

Re: Identify Primary and Secondary hosts in Cluster Environement

Mark_sas — Tue, 17 May 2016 00:54:10 GMT

From a Metadata Server perspective, the primary node is known as the "master," and it can change in the case of failover. You can determine the master node by following the instructions under Monitoring Clustered Metadata Servers at http://support.sas.com/documentation/cdl/en/bisag/68240/HTML/default/viewer.htm#n1qmrerr6rvigxn132cnapd3r2c1.htm.

From a Middle Tier perspective, if you've forgotten which machine is your primary node, there are certain Web apps which are not clusterable, and therefore only live on the primary node. You can find the list of such apps in the Exceptions to the Middle-Tier Cluster Support section of http://support.sas.com/documentation/cdl/en/whatsdiff/66129/HTML/default/viewer.htm#n1roydrale7528n14alj43gi257f.htm.

From a SAS Application Server (compute tier) perspective (I'm assuming you're not talking about SAS Grid Manager), there's not really a primary node. You just have peer machines which host multiple servers (workspace, stored process, pooled workspace, etc.).

Re: Identify Primary and Secondary hosts in Cluster Environement

sudipta_goswami — Wed, 18 May 2016 13:46:25 GMT

Thanks Mark.

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