Trevor
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Ansible Automation Platform - node types

Is it possible (not is it practical) for all 4 node
types - hop, control, hybrid, execution - to
reside on a single compute node?

Trevor "Red Hat Evangelist" Chandler
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Chetan_Tiwary_
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@Trevor I don't see any technical hindrance in having these 4 nodes reside in a single compute node. 

However, as you already know - it is not the best or recommended solution in all major real time infrastructure which has either performance or resource or isolation as critical requirements. 

Travis
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@Trevor -

First answer would be ... NO!

The DO467 course describes these scenarios very well. 

Hybrid nodes: Have multiple functionalities so they are already running and serving multiple roles. They do both execution and control.

Execution Nodes: Are meant to connect and run EEs and connect to systems to perform tasks and run the playbooks.

Control Nodes: This is automation controller. The DO374 course already has a "Hybrid" setup so the Automation Controller is also an execution node.

Hop Nodes: Do absolutely nothing. They are meant as a means for an execution node to be reached from a "control" node. These are generally machines in a DMZ and are required to be SSH jump boxes so that a control node can make SSH connect to the execution node.

So if you have network connectivity to all boxes, then a hop node isn't needed.

Hybrid node already has both functions of Execution and Control. 

So hope this information helps clear things up.

 

Travis Michette, RHCA XIII
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SENIOR TECHNICAL INSTRUCTOR / CERTIFIED INSTRUCTOR AND EXAMINER
Red Hat Certification + Training
Travis
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@Chetan_Tiwary_ ^^^ see response

Travis Michette, RHCA XIII
https://rhtapps.redhat.com/verify?certId=111-134-086
SENIOR TECHNICAL INSTRUCTOR / CERTIFIED INSTRUCTOR AND EXAMINER
Red Hat Certification + Training
Chetan_Tiwary_
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Thanks @Travis for your valuable input !!

Trevor
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Travis -

Thanks for the response.

I had an understanding of the functionality of each
of the four node types.  However, it appears as though
I needed that additional ingredient that you provided
because my understanding at this point didn't allow me
to provide a YAY or NAY to my query.  Thank you for
leading off with the short answer.

Yes, your response did indeed help to clear things up!!!

Trevor "Red Hat Evangelist" Chandler
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