File Server shows in disconnected state on UI

Problem description

Pinging the IP address is successful. But pinging the FQDN is giving the following error-
“Name or service not known”

DNS is unable to resolve IP to the correct FQDN.

In main_service.log, we can see the error “Name or service not known”.

For Windows

Navigate to the below directory:
C:\Windows\System32\drivers\etc
Open the hosts file in notepad
Add the IP address and FQDN in the following format-
102.54.xx.xx rhino.acme.com
Save the file

For Linux,

Edit the hosts file by entering the below command:
vi /etc/hosts
Add the IP address and FQDN in the following format-
102.54.xx.xx rhino.acme.com
Save the file
Press Escape key and type :wq!

Ping the FQDN to verify if it is successful
If it is unsuccessful, request the customer to further verify the FQDN and correct the DNS entries.