vRA cluster node could report as "down" on load balancer when under heavy load

Products

• VMware Aria Suite

Issue/Introduction

Under heavy load or post failover operation, a vRA node might be flagged as 'down' (Error 503) on the external load balancer.

As of vRA 7.5, vIDM health check is included as dependency on the vRA node health check.
Under stress, the healthcheck of the embedded vIDM instance is taking longer to respond, prematurely flagging vRA node as down in load balancer.

Environment

VMware vRealize Automation 7.5.x

Resolution

VMware is aware of this issue.

A resolution for this issue is being evaluated for inclusion in a future release.

To work around this issue, you will need to follow these steps:

1. Download the file attached to this article (vra-7.5.0-hf10053539.pl).
2. Snapshot or Backup all vRealize Automation appliances prior to deploying the patch.
3. Copy the file to all vRealize Automation appliances.
4. Unzip the patch using the following command:

gunzip vra-7.5.0-hf10053539.pl.gz

5. Update the extracted files execution rights using the following command:

chmod +x vra-7.5.0-hf10053539.pl

6. Execute the patch using the following command:

./vra-7.5.0-hf10053539.pl