将容器保存为镜像
[root@1-0001 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a40d46499c3a gitlab/gitlab-ce "/assets/wrapper" 2 weeks ago Exited (0) 19 minutes ago gitlab
[root@1-0001 ~]# docker commit -p a40d46499c3a gitlab-backup:1.0.0
[root@1-0001 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
gitlab-backup 1.0.0 fd6ac7c7e8b5 18 minutes ago 2.38GB
镜像保存
现在,为了备份该快照,我们有两个选择,一个是我们可以登录进Docker注册中心,并推送该镜像;另一个是我们可以将Docker镜像打包成tar包备份
[root@1-0001 gitlab]# docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: liuziqun
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
[root@1-0001 ~]# docker tag fd6ac7c7e8b5 liuziqun/gitlab-backup:1.0.0
[root@1-0001 ~]# docker push liuziqun/gitlab-backup:1.0.0
[root@1-0001 ~]# docker save -o ~/gitlab-backup.tar gitlab-backup:1.0.0
恢复镜像
docker load -i ~/gitlab-backup.tar
通过镜像加载容器
docker run -d -p 80:80 gitlab-backup
文件参考自https://blog.csdn.net/web18224617243/article/details/126580908
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