docker容器的备份和恢复

1. 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

2. 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

3. 恢复镜像

docker load -i ~/gitlab-backup.tar

4. 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