¿Cómo se define la red en el archivo de redacción de Docker?

How do you define network in the docker compose file?

When you run docker-compose up , the following happens:

1. A network called myapp_default is created.
2. A container is created using web ‘s configuration. It joins the network myapp_default under the name web .
3. A container is created using db ‘s configuration. It joins the network myapp_default under the name db .

1. Open Oracle VM VirtualBox Manager.
2. Select the VM used by Docker.
3. Click Settings -> Network.
4. Adapter 1 should (default?) be “Attached to: NAT”
5. Click Advanced -> Port Forwarding.
6. Add rule: Protocol TCP, Host Port 8080, Guest Port 8080 (leave Host IP and Guest IP empty)
7. Guest is your docker container and Host is your machine.

By default, Docker Compose automatically creates a network specifically for the application stack (which is why you didn’t define one in the compose file). Look at the logs using the docker-compose logs -f command.

According to the Docker Compose’s compose-file documentation: depends_on – Express dependency between services. links – Link to containers in another service and also express dependency between services in the same way as depends_on.

Deploying the tool involves three main steps. First, you create a Dockerfile to define your app. Second, you create a Compose configuration file that defines app services. Lastly, you fire up a command-line tool to start and control the app.

The Compose file is a YAML file defining services, networks and volumes. The default path for a Compose file is ./docker-compose.yml .

In the Internet Protocol Version 4, the address 0.0. 0.0 is a non-routable meta-address used to designate an invalid, unknown or non-applicable target. This address is assigned specific meanings in a number of contexts, such as on clients or on servers.

When you start Docker, a default bridge network (also called bridge ) is created automatically, and newly-started containers connect to it unless otherwise specified. You can also create user-defined custom bridge networks. User-defined bridge networks are superior to the default bridge network.

Docker Compose is designed from the ground up to simplify the deployment of microservices. For starters, Docker Compose is designed to run on a single host or cluster, while Kubernetes is more agile in incorporating multiple cloud environments and clusters.

Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration.

Docker – Container Linking. Container Linking allows multiple containers to link with each other. It is a better option than exposing ports. Let’s go step by step and learn how it works.

Docker (and probably any container technology) uses linux network namespaces to isolate container network from host network . When Docker creates and runs a container; it creates a separate network namespace (container network) and puts the container into it. Then, Docker connects the new container network to linux bridge docker0 using a veth pair.

Overview of Networking in Docker. Networking in Docker is the means through which containers communicate with each other and external workloads. The most distinctive and flexible feature of Docker containers is the ability to network with the workloads that might or might not be of Docker in nature.