VMware Aria Operations node fails to boot up when upgrading from 8.18.5 to 8.18.6

Products

• VCF Operations

Issue/Introduction

• VMware Aria Operations node fails to boot up when upgrading from 8.18.5 to 8.18.6 
• Launching web console shows the the following error in the UI

  Firstboot failed
  Please see the log files in the following directory
  /var/log/firstboot/

•  Browser language is set to English and when taking the cluster offline the reason given was in English as per KB Upgrade Aria Operations failed with the error "firstboot failed" on the console. 

Environment

VCF Operations/Automation (formerly VMware Aria Suite)

Resolution

1. Revert to snapshots as per KB Revert to Snapshots after failed upgrade 
2. Power on the nodes in the order documented in KB Shutdown and Startup sequence for Aria Operations cluster 
3. Confirm that all nodes in the cluster are in sync and have the same timezone running the command on each node in the cluster 

   watch -n 1 date

4. To set the timezone run the following commands:
   1. List all the available timezones 

      timedatectl list-timezones

   2. Set the timezone: 

      timedatectl set-timezone <timezone>

5. Bring the cluster back online 
6. Try the upgrade again