10.8. Communicating between containers using DNS

Procedure

1. Run a receiver container attached to the mynet network:

   # podman run -d --net mynet --name receiver ubi10 sleep 3000

2. Run a sender container and reach the receiver container by its name:

   # podman run -it --rm --net mynet --name sender alpine ping receiver
   
   PING rcv01 (10.89.0.2): 56 data bytes
   64 bytes from 10.89.0.2: seq=0 ttl=42 time=0.041 ms
   64 bytes from 10.89.0.2: seq=1 ttl=42 time=0.125 ms
   64 bytes from 10.89.0.2: seq=2 ttl=42 time=0.109 ms

   Exit using the CTRL+C.

   You can see that the sender container can ping the receiver container using its name.