Container

Persistence

The image's top layer can be written, but not kept!

• Stopping the container means the total loss of data.

Persistence is achieved through external resources.

• Bind mount: path to the host.

• Volume: managed has a Docker resource.

• External: iSCSI, Database, NFS, etc.

Container Network

Containers execute a configuration in a specific network.

• without an ingress network added by omission.

Typical network mechanisms:

• Bridge: virtual switch.

• Host: network only between the host and the container.

• None: completely isolated-

Services inside containers cannot provide services to other applications.

• It is necessary to explicitly expose the services.

Additionally

Docker Compose.

• Orchestration of Docker containers.

Kubernetes.

• Orchestrator.