Docker - Networking - Docker Network Drivers

Docker offers multiple network drivers, each suited for different use cases.

• Default network type for standalone containers.
• Containers on the same bridge network can communicate using IP addresses or container names.
• Suitable for applications running on a single host.

Create a new bridge network:

docker network create my-bridge-network

• Containers share the host's network stack.
• No network isolation between the container and the host.
• Offers performance benefits by reducing network overhead.

Run a container using the host network:

docker run --network host my-image

• Used for swarm services and multi-host networking.
• Enables containers running on different Docker hosts to communicate securely.
• Requires a key-value store like Consul or etcd for coordination.

Create an overlay network:

docker network create -d overlay my-overlay-network

* Assigns a MAC address to each container, making it appear as a physical device on the network. * Containers can be directly connected to the physical network. * Useful for legacy applications requiring direct network access.

Create a macvlan network:

docker network create -d macvlan \
  --subnet=192.168.1.0/24 \
  --gateway=192.168.1.1 \
  -o parent=eth0 my-macvlan-network