How to change ownership of files for Foglight user (4327248)

An FMS on Linux was running as user foglight but it was upgraded using root. Now all the files belong to root and the system is running as root. This solution also applies if Foglight or Foglight for Virtualization Enterprise Edition were accidentially started as root.

What is the safest way to change it back to user foglight?

Change ownership of all files in $FGLHOME recursively.

Stop Foglight

chown -R foglight /opt/foglight (substitute correct path if needed)

Start Foglight as foglight user (or vfoglight if appropriate)