With the popularity of Docker containerization technology, more and more developers are beginning to use Docker to build their own applications. However, one thing that is important to keep in mind when using Docker is how to connect to the Docker IP.
Why do you need to connect to Docker’s IP
When using Docker, we usually create multiple containers and connect them through the network. Each container has its own IP address. This IP address is the IP address inside the container, not the IP address of the host. Therefore, if we want to access the container from the host or other containers, we need to know the IP address of the container.
Methods to connect to Docker’s IP
Generally, we can connect to Docker’s IP through the following methods:
- Use the docker inspect command
Use the docker inspect command to obtain detailed information about the specified container, including the container's IP address. The usage is as follows:
docker inspect --format='{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container_name_or_id>
Where, <container_name_or_id></container_name_or_id>
is the container name or container ID to be queried. This command will return the IP address of the container.
- Using Docker DNS Service
Docker provides a built-in DNS service for communication between containers. Each container is automatically assigned a name, which can be used to access the container through the DNS service. The name of the container is automatically generated by the Docker engine by default, in the format In Docker, we can create a custom network and connect the container to the network. When containers are connected to the same network, they can use the corresponding container name or service name to connect to each other without using IP addresses. Create a custom network: Connect the container to this network: Containers in the same network can use the corresponding container name or service name to Connect to each other, for example: Summary Connecting Docker’s IP is an important operation when using Docker. Use the docker inspect command to obtain the IP address of the container, use the Docker DNS service to access the container through the container name, and use the Docker network to connect the containers to the same network using the corresponding container name or service name to connect to each other. These methods can help us better manage and connect Docker containers, making our work more enjoyable and efficient. The above is the detailed content of How to connect docker ip. For more information, please follow other related articles on the PHP Chinese website!docker network create <network_name>
docker run --name <container_name> --network <network_name> <image>
ping <container_name>

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