Shulou(Shulou.com)06/01 Report--

In view of how to communicate between docker containers, this article introduces the corresponding analysis and solutions in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

How do docker containers communicate? The main ways to communicate between docker containers are as follows:

1. Access through the container ip

After the container is restarted, the ip changes. Access through the container ip is not a good solution. Communicating by using the ip address of the container will result in the hard coding of the ip address, which is not convenient for migration, and the ip address will change after the container is restarted, unless a fixed ip is used.

two。 Ip:port access through the host

Through the ip:port access of the host, it communicates through the ip of the host and the port number exposed by the container. The communication mode is relatively simple, and the limited communication can only be carried out by listening to the processes in the exposed port.

3. Establish a connection through link (not officially recommended)

When running the container, specify the parameter link so that the source container and the linked container can communicate with each other, and the accepted container can obtain some data of the source container, such as environment variables. Through the link mechanism of docker, you can communicate with another container through a name. Link mechanism makes it convenient for the container to find other containers, and can safely transmit some connection information to other containers.

4. Via User-defined networks (recommended)

Docker network to create a bridging network by assigning containers to the newly created bridging network during docker run so that containers in the same bridging network can access each other.

Create a network

Docker network create test-network

When you start the container, join the created network

Docker run-it-- network test-network-- network-alias mysql-e MYSQL_ROOT_PASSWORD=123 mysql:5.7

Start the linked container

Docker run-it-network test-network-network-alias centos centos / bin/bash

The container cloud is realized by deploying container services on cluster servers through docker technology. It is secure and reliable, with tens of thousands of Linux images, powerful, lightweight and flexible, and can easily serve as cluster services and build VPCs freely and easily.

This is the answer to the question about how to communicate between docker containers. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.