DefinIT

vRealize Automation 7.3 Distributed Install – Prerequisites

Pre-requisites - Get your ducks in a row!As a consultant I’ve had the opportunity to design, install and configure dozens of production vRealize Automation deployments, from reasonably small Proof of Concept environments to globally-scaled multi-datacenter fully distributed behemoths. It’s fair to say, that I’ve made mistakes along the way – and learned a lot of lessons as to what makes a deployment a success.

In the end, pretty much everything comes down to getting the pre-requisites right. Nothing that I’ve written here is not already documented in the official documentation, and the installation wizard does a huge amount of the work for you.

For the purposes of this post, I am working with the following components, which have been pre-deployed on a single flat network.

vRA Appliances

Server
CPU
RAM
Disk
vra-app-1
4
18
140
vra-app-2
4
18
140
vRA IaaS Windows Servers
Server
CPU
RAM
Disk
vra-web-1
2
8
60
vra-web-2
2
8
60
vra-man-1
2
8
60
vra-man-2
2
8
60
vra-dem-1
2
4
60
vra-dem-2
2
4
60
vra-sql
2
8
60

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vRealize Automation (vRA) Manager Service error

| 14/01/2015 | Tags: , , , ,

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Recently when do a fresh install of vRealize Automation (vRA) 6.2 I came across the following error after configuring the first end point.

 

Error log example

msdtc-error

 

 

 

 


DataBaseStatsService: ignoring exception: Error executing query usp_SelectAgent Inner Exception: Error executing query usp_SelectAgentCapabilities

and

Error processing ping response Error executing query usp_SelectAgent Inner Exception: Error executing query usp_SelectAgentCapabilities


First of all I checkedĀ to see if the end points were working which in this case they appeared to be, but I wanted to clear the error before continuing the install.

It was clear from the error log at leastĀ one machine was affected by the error, IaaS.

After a little bit of effort searching I came across this extremely helpful article – “Using a Cloned VM as a SQL Server – Gotcha for vCAC Install

Essentially because I had deployed my VMs from the template or clone with MSDTC already installed the deployed VMs shared the same GUID for their MSDTC thus causing problems.

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