Network

Question 1

List networks

Answer 1

docker network ls

Question 2

Get detailed info of a network

Answer 2

docker network inspect network_name

Question 3

Create/Delete a network

Answer 3

docker network create network_name

docker network rm network_name

Question 4

Delete all unused networks

Answer 4

docker network prune

Question 5

Add/remove a container to existing network

Answer 5

docker network connect network-name container

docker network disconnect network-name container

Question 6

Create network specifying a subnet and gateway of this subnet

Answer 6

docker network create –subnet 10.0.1.0/24 –gateway 10.0.1.1 my_net
docker network create –subnet 10.2.0.0/16 –gateway 10.2.0.1 –ip-range=10.2.5.0/24 –driver=bridge –label=host4net br001
docker network inspect br001

Question 7

Create container and network, assign container to a network

Answer 7

1. docker container run –name nginx-cont -d nginx
   docker network create my_net
   docker network connect nginx-cont my_net
2. docker network create –subnet 10.2.0.0/16 –gateway 10.0.0.1 –ip-range=10.2.5.0 –driver=bridge –label=host1net br001
   2.1.
   docker container run –name centos-cont -dit –network br001 centos /bin/bash
   yum -y update
   yum install -y net-tools
   ip addr=> ip will be from ip-range, for example 10.2.5.1
   2.2.
   docker container run –name nginx-cont –ip 10.2.5.100 -d –network br001 nginx
   docker container inspect nginx-cont | grep -i ipaddr