Is it possible for containers within a pod to communicate with each other

Question

Can containers within a Kubernetes Pod communicate with each other?

Answer 1

Yes, it is possible for containers to communicate within a pod. 

They reach other on localhost network. 

For example, if you have two containers within a pod, a MySQL container running on port 3306, and a PHP container running on port 80, the PHP container could access the MySQL one through localhost:3306.