Overview of Docker Networks

Main Commands for Working with Networks

• network ls — list all networks
• docker network rm $(docker network ls -q) — remove all networks
• docker network inspect bridge — inspect the bridge network
• docker network create — create a network (default type is bridge)
• docker network connect NETWORK CONTAINER — connect a network to a container
• docker network disconnect NETWORK CONTAINER — disconnect a network from a container
• docker network inspect x6d9725041b2 | NetworkID:"sdfsdfsfsdfsFDFFDFgb" — view network ID

Working with Ports

• -p Host port:Container port
• -p 9980:9980 — open a port
• -p 9980:9980 -p 1111:1111 — open two ports
• -p 0.0.0.0:9980:9980 — open a port only for IPv4
• -p 127.0.0.1:9980:9980 — access only from the host computer

Configuring IPv6

Create a file /etc/docker/daemon.json with the following content:

{ "ipv6": true, "fixed-cidr-v6": "2001:db8:1::/64" }

When creating a network, use the parameter --ipv6.

Network Types and Their Configuration

Creating a MACVLAN Network

• Enable promisc mode: sudo ip link set eth0 promisc on
• In VirtualBox, enable Promiscuous Mode: Allow All
• Example command:

  docker network create -d macvlan --subnet=192.168.10.0/24 --gateway=192.168.10.1 -o parent=eth0

Creating an IPVLAN Network

• Clones the MAC address of the host interface
• Example command:

  docker network create -d ipvlan --subnet=192.168.0.0/24 --gateway=192.168.0.1

Running a Container with a Specific Network

Example command:

docker run --network=ipvlan1 --ip=192.168.10.100 --name CONTAINER1 CONTAINERIMG