Container Networking

Setting Expectation

Not a deep-dive kind
Container networking introduction
Container network interfaces
Network drivers
Overlay and docker swarms

No Network Alert!!

Container networking introduction

Network Namespace

A namespace is a way of scoping a particular set of identifiers. Using a namespace, you can use the same identifier multiple times in different namespaces. You can also restrict an identifier set visible to particular processes.

Scott's Weblog

Networking aspects

Need to talk to external world
Reach container from external world
Inter container connectivity within the same host
Inter container connectivity across hosts
Discover services
Loadbalance services
Secure multi-tenant services

Evolution

network interfaces

Hell lot of specs

Why kubernetes move with CNI standards? Confession

Guess how then kubernetes supports docker?

Network drivers

Bridge driver


					$ docker run --rm -p 8080:5000  avikjis27/node-server

Host only


					$ docker run --rm  --net=host avikjis27/node-server

None driver


					$ docker run --rm  --net=none avikjis27/node-server

Docker Swarm


					$ vagrant up


					$ sudo docker service create --name node-server 
					--replicas 3 --publish published=8080,target=5000 
					avikjis27/node-server