Detailed explanation of the construction and use of docker private warehouse

1. Download the repository image

docker pull registry

2. Create a private warehouse container -d means background start

docker run -d -p 5000:5000 -v /opt/data/registry:/var/lib/registry registry 

3. Remove the 5000 port restriction from the firewall

firewall-cmd --zone=public --add-port=5000/tcp --permanent

4. Verify whether the private warehouse is started successfully

http://192.3.8.12:5000/v2

5. Packaging image

docker tag my-nginx:v1 192.168.56.200:5000/centos

6. Upload the packaged image to a private warehouse

[root@server1 ~]# docker push 192.168.56.200:5000/centos
The push refers to a repository [192.168.56.200:5000/centos]
Get https://192.168.56.200:5000/v1/_ping: http: server gave HTTP response to HTTPS client 

This problem may be caused by the client using https, but the docker registry does not use https service. One way to handle this is to change the client's request to the address "192.168.56.200:5000" to http.

Solution:

In the "/etc/docker/" directory, create the "daemon.json" file. Write in the file: { "insecure-registries":["192.168.56.200:5000"] }

After saving and exiting, restart Docker.

7. The problem occurred again when uploading again, because selinux was not turned off. (Use the setenforce 0 command to temporarily disable it, or you can run vi /etc/sysconfig/selinux and change the line inside to SELINUX=disabled, save the change, and then reboot.)

8. View the image in the private warehouse
http://192.3.8.187:5000/v2/_catalog

9. In this way, the image of the private warehouse is downloaded on server2.

docker pull 192.168.56.200:5000/centos 

10. Backup and restore of warehouse images.

Directly back up /opt/data/registry regularly, and restore it by directly hanging it under the docker-registry image and starting it.

docker run -d -p 5000:5000 -v /opt/data/registry:/var/lib/registry registry

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.