Docker Host Architecture with Isolated Networks and Shared Volumes

This diagram showcases a Docker Host setup with two isolated networks—net-1 and net-2—each containing application and database containers, along with persistent data volumes.

net-1:

Hosts two application containers: app-1 and app-2

Connects to two MySQL database containers: mysql-db and mysql-db-2

Shares a common volume labeled petclinic-data for data persistence

net-2:

Contains one application container: app-3

Connects to a separate database container: mysql-db-3

Uses its own volume: petclinic-data-2

A dashed line from app-3 in net-2 to mysql-db-2 in net-1 indicates cross-network communication, highlighting flexibility in container interactions across isolated environments.

This setup demonstrates best practices in Docker networking, data isolation, and volume management for scalable and maintainable containerized applications.