Last question can also be solved by updating /etc/hosts on the host01 with the new IP pointing to app01
My question is if there’s a reason why if this is not OK and I should update the app to listen on all interfaces as in the solution 
Thank you!
Last question can also be solved by updating /etc/hosts on the host01 with the new IP pointing to app01
My question is if there’s a reason why if this is not OK and I should update the app to listen on all interfaces as in the solution
Thank you!