VMware Aria Operations 8.18.0 keep redirecting while access UI by browser

Products

• VMware Aria Operations (formerly vRealize Operations) 8.x

Issue/Introduction

• User is unable to access VMware Aria Operations from UI.
• Accessing Operations UI presents the message "Back To Previous Page".
• VMware Aria Operations Admin UI shows Cluster Status Failure. 

Environment

VMware Aria Operations 8.18.0

Cause

• Issue is related to not enough free space
• "df -h" command shows  /storage/db is 96% use%.

Resolution

If any of the partition is full or higher than 95% of usage please follow kb below to add more free space:

Adding additional storage to a node in Aria Operations