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How to achieve interconnection between docker containers, I believe that many inexperienced people do not know what to do. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Random mapping: ports will not conflict. -P (Big P)

[root@tcy1 tcy] # docker run-P-d-name mynginx1 nginx72decf04199f8ca77d0c59351cc04a360c125b1bd5a949a31c572bda8ca0486a

The mapping relationship is as follows: port 80 of docker is mapped to port 32768 of the host.

[root@tcy1 tcy] # docker ps-lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES72decf04199f nginx "nginx-g 'daemon of 12 seconds ago Up 7 seconds 0.0.0.0 lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES72decf04199f nginx 32768-> 80/tcp mynginx1

2. Designated port:

1 、 HostPort:ContainerPort

HostPort is the local port and ContainerPort is the port in the container.

[root@tcy1 tcy] # docker run-d-p 92:80-- name mynginx2 nginxf1a2dc37908b7e612df81301b068d2ee88bb49f79dd23eab12eb02172e5d7fe1 [root@tcy1 tcy] # docker ps-lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESf1a2dc37908b nginx "nginx-g'daemon of About a minute ago Up About a minute 0.0.0.0 name mynginx2 nginxf1a2dc37908b7e612df81301b068d2ee88bb49f79dd23eab12eb02172e5d7fe1 92-> 80/tcp mynginx2

2. IP:HostPort:ContainerPort, mapped to the specified port of the specified address

Docker run-d-p 127.0.0.1 92purl 80-- name mynginx2 nginx

3. IP::ContainerPort, which is mapped to any port of the specified address

Docker run-d-p 127.0.0.1-name mynginx2 nginx

III. Interconnection of containers

Container interconnection is a way to allow applications in multiple containers to interact quickly. It creates a connection between the source and the receiving container, and the receiving container can quickly access the source container through the container name without specifying a specific IP address. The connection system is performed according to the name of the container.

1. Random mapping: ports will not conflict. -P (Big P)

[root@tcy1 tcy] # docker run-P-d-name mynginx1 nginx72decf04199f8ca77d0c59351cc04a360c125b1bd5a949a31c572bda8ca0486a

The mapping relationship is as follows: port 80 of docker is mapped to port 32768 of the host.

[root@tcy1 tcy] # docker ps-lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES72decf04199f nginx "nginx-g 'daemon of 12 seconds ago Up 7 seconds 0.0.0.0 lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES72decf04199f nginx 32768-> 80/tcp mynginx1

2. Designated port: 91 is the port of the host and 80 is the port in the container.

[root@tcy1 tcy] # docker run-d-p 92:80-- name mynginx2 nginxf1a2dc37908b7e612df81301b068d2ee88bb49f79dd23eab12eb02172e5d7fe1 [root@tcy1 tcy] # docker ps-lCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESf1a2dc37908b nginx "nginx-g'daemon of About a minute ago Up About a minute 0.0.0.0name mynginx2 nginxf1a2dc37908b7e612df81301b068d2ee88bb49f79dd23eab12eb02172e5d7fe1 92-> 80/tcp mynginx2 after reading the above, have you mastered how to interconnect docker containers? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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