Cloud Lab-23: Resource Group vCenter Advance Configuration – “Cluster Configuration (HA/DRS)”

In my last post, i prepared VM Templates. which will be used in cloud environment for VM and vAPP this post, i am going to configure vCenter RG Group Cluster .i would strongly recommended you to read my Lab scenario post to understand this post. Ok let start.


In this Lab we will perform following tasks

  1. Configure Resource Group Cluster

1-Configure Resource Group Cluster

To create a cluster -> Right Click on Data Center -> New Cluster


Enter the cluster Name and Turn on DRS and HA feature. In production you should on EVC mode as well if you have same process family for all the hosts in the cluster (e.g AMD / Intel)


Expend the DRS settings -> Click the arrow sign from left side of DRS word


In our Lab gold cluster we add three hosts and one of them will be act as standby host. If you expand VSphere HA settings .you will notice in admission control policy we select “Host failure cluster tolerates” option. Which we will change later to as Standby host. Standby host setting is not visible in this screen.

Other enabled settings are “Enable hosts monitoring” and “VM Monitoring only”.


When all settings are completed -> Click Ok

Below is our newly added cluster.


Now it’s time to add some host in the cluster. To add a host in the cluster just drag the host into the cluster and it will be added as shown below.


Keep viewing recent task.


Now use the same procedure to add the reset of the host into the cluster. Here is final look of our gold cluster.


Now do some advance setting for Gold Cluster HA. These settings are not visible in the first screen

Select he Cluster- > Manage -> Settings- > VSphere HA -> Click Edit


Following setting need to change in Admission control section -> expand the admission control setting move to down.


In down you will see the highlighted setting. In this setting we add a standby host for our HA. Standby host is use to hold all the VM of the failure host if any fail in our cluster.

To add a standby hosts -> Click + Sign.


Select the standby host -> Click “Ok”


Review the settings


Now move to Datastore heart beating section -> expand and do the highlighted settings.

*Select minimum two shared datastore for head beat*

Why we used data store heartbeat?

When the master host in a vSphere HA cluster cannot communicate with a slave host over the management network, the master host uses datastore heart beating to determine whether the slave host has failed, is in a network partition, or is network isolated. If the slave host has stopped datastore heart beating, it is considered to have failed and its virtual machines are restarted elsewhere.


When HA setting completed -> Click OK.

VSphere DRS

As highlighted we off the power management feature in my lab. But in production you should on power management feature. if you NIC and hardware supports it.


Now our first Cluster settings is completed lest moved to the next cluster.

Right Click On Datacenter-> Create Cluster.

Enter the Cluster name and turn on DRS, HA Features


Use drag and drop to add the host in the cluster.


Now do the Datastore heartbeat and other Cluster advance setting such as HA and DRS as we did in our Gold Cluster. In my lab datastore heartbeat and DRS settings are same for all cluster but HA admission control policy may vary in every cluster. In silver cluster I choose “host failure cluster tolerates (1)” as an admission control policy


When all the settings of the silver cluster is completed then moved to our third and last cluster.

Right Click On Datacenter-> Create Cluster.

Enter the Cluster name and turn on DRS, HA Features


In this cluster every other settings are same as our other cluster except we use “percentage based reserved failure” capacity as our admission control policy


Here is final look of our Resource group cluster which we used for cloud.



Leave a Reply

Please log in using one of these methods to post your comment: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s