Workflow to use for vRO Cluster Demonstrations

This simple workflow can be used to demonstrate the failover behavior in case of a vRealize Orchestrator node failure. It creates the number of VMs that your specify. I suggest 30. During the execution of the workflow power off one node of the cluster and you will be able to demonstrate that the execution continues on another node.

The workflow is available as a downloadable package:

com.vmwarebits.clustertest.zip

Process a text file from a Resource Element through an Array

This example workflow shows how you can use a ResourceElement containing a list of virtual machine names and execute a workflow for each of the VMs in the list. The workflows and actions are available as a package here: com.vmwarebits.vmlistExample.zip.

To use the workflow yoi create a ResourceElement and import a text file that contains the virtual machine names, such as in the next image.

Preparing SQL Server Express for a vRealize Automation 7 Proof of Concept Setup

For a vRealize Automation 7 deployment including Infrastructure As A Service (IAAS) a Microsoft SQL database server is a requirement. Not everyone has access to that software and when setting up a Proof of Concept environment it is not always justifiable to purchase a SQL Server license. Therefor in the case of a PoC it's a viable solution to use SQL Express.

Enable tftp service and firewall rules for vCenter 6 Appliance Autodeploy and make them persistent

When using the vCenter 6 appliance as an Autodeploy server you can also use the appliance as your TFTP-server. But for that to work you need to start that service and enable access to it via a firewall rule.

Of course you also need to enable the Autodeploy service itself, which can be done from the vSphere Web Client under Home - Administration - Deployment - System Configuration - Services. 

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Mem.MemMinFreePct calculation example

One of the topics in the VMware vSphere Optimize and Scale course is how the amount of RAM is calculated that your host should have available as a minimum before processes such as ballooning and swapping become active.

The course material provides this table that shows us how this minimal free memory is calculated:

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