Facing issue in adding shard to mongos

[rakhi_maheshwari1 (Rakhi Maheshwari)]

@tapiocaPENGUIN

Firewall issue blocking communication between the mongos and the shard servers

Hi tapioca,
Thankyou so much for the solution. In my case hostname mapping was not done due to which I was not able to ping the server from mongos.
Now I am able to add the shard successfully.