Docker: How I can create a docker container with specific number of network interfaces ?

Question

There are multiple cases:
1. A number of containers have been launched in the same host. how these container communicate to each other
2. Out of "x" numbers of containers in the same host, I want to enable communication between two specific containers. How I can achieve this ?
3. Containers have been launched into different hosts machine and I want to enable communication between these containers. What are the options available ?

Answer 1

It is good question. Sometime it happens you need multiple network interfaces within the same container.
As far as I studied docker networking, pipework can help you to create multiple interfaces within the container.

Create a docker container using following command format:
sudo docker run -itd --name= --net=none

Add interfaces to the instantiated docker container:
sudo pipework bridge0 -i eth0 dhclient
sudo pipework bridge1 -i eth1 dhclient

Hope you can use these above commands to complete your task.