21 Days of Docker-Day 19 -Docker Networking Deep Dive

On Day 9, Day 10 and Day 11 I discussed Docker Networking, let go one level down and dig deeper into it.

21 Days of Docker-Day 9- Docker Networking - Part 1

21 Days of Docker-Day 19 -Docker Networking Deep Dive

21 Days of Docker-Day 11- Docker Networking - Part 3

What is Container Networking Model(CNM) and Libnetwork?

• The CNM is an open-source container networking specification that contributed to the community by Docker Inc.
• Docker’s libnetwork is a library that provides an implementation for CNM.
• However, third-party plugins can be used to replace the built-in Docker driver.
• Libnetwork is cross-platform and open-source.

• CNM has interfaces for both IPAM plugins and network plugin. The IPAM plugin APIs can be used to create/delete address pools and allocate/deallocate container IP addresses. The network plugin APIs are used to create/delete networks and add/remove containers from networks.

Docker Networking on Linux

• Docker networking uses the Linux Kernel extensive networking capabilities(eg: TCP/IP stack, VXLAN, DNS)
• Docker networking utilizes many Linux Kernel networking features(network namespaces, bridges, iptables, veth pairs…)
• Linux Bridges: L2 virtual switches implemented in the kernel
• Network namespaces: Used for isolating container network stacks
• veth pairs: Connecting containers to container networks
• iptables: Used for port mapping, load balancing, network isolation

To read the complete post

21 Days of Docker-Day 19 -Docker Networking Deep Dive

Please follow me with my Journey

• Website:http://100daysofdevops.com/
• Twitter:@100daysofdevops OR @lakhera2015
• Facebook:https://www.facebook.com/groups/795382630808645/
• Medium:https://medium.com/@devopslearning
• GitHub:https://github.com/100daysofdevops/21_Days_of_Docker

This time to make learning more interactive, I am adding

• Slack
• Meetup

Please feel free to join this group.

Slack:

https://100daysofdevops.slack.com/join/shared_invite/enQtNzg1MjUzMzQzMzgxLWM4Yjk0ZWJiMjY4ZWE3ODBjZjgyYTllZmUxNzFkNTgxZjQ4NDlmZjkzODAwNDczOTYwOTM2MzlhZDNkM2FkMDA

Meetup Group

If you are in the bay area, please join this meetup group https://www.meetup.com/100daysofdevops/