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====== Docker - Networking - Docker Network Drivers ======

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

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===== Bridge Networks =====

  * 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:

<code bash>
docker network create my-bridge-network
</code>

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===== Host Networks =====

  * 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:

<code bash>
docker run --network host my-image
</code>

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===== Overlay Networks =====

  * 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:

<code bash>
docker network create -d overlay my-overlay-network
</code>

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===== Macvlan Networks =====

 * 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:

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

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