Docker备份容器

作者：E4b9a6，创建：2021-06-16，字数：1345，已阅：77，最后更新：2024-03-10

在NAS上运行的Docker容器PhotoPrism需要备份以防万一（当然备份原始照片数据更重要）

备份步骤

commit container
save container to tar file

恢复步骤

load container by tar file

全部步骤指令

Bash

# 打印当前所有容器
❯ docker ps
CONTAINER ID   IMAGE                          COMMAND                  CREATED       STATUS       PORTS                     NAMES
a48bc98b4a21   photoprism/photoprism:latest   "/entrypoint.sh phot…"   2 weeks ago   Up 5 hours   0.0.0.0:32342->2342/tcp   chancel_photoprism_1
f1d7d5ac091f   mariadb:10.5                   "docker-entrypoint.s…"   2 weeks ago   Up 5 hours   3306/tcp                  chancel_mariadb_1

# 提交需要备份的容器
❯ docker commit -p a48bc98b4a21 photoprism-container-backup

# 查看镜像列表
❯ docker images
REPOSITORY                    TAG       IMAGE ID       CREATED         SIZE
photoprism-container-backup   latest    cc71161fb644   4 minutes ago   14.3GB
hello-world                   latest    d1165f221234   2 weeks ago     13.3kB
mariadb                       10.5      e27cf5bc24fe   2 weeks ago     401MB
photoprism/photoprism         latest    f81f7b1e47a4   3 weeks ago     1.3GB

# 导出已保存的镜像备份为tar压缩文件
❯ docker save -o ~/photoprism-container-backup.tar photoprism-container-backup

# 导入已保存的镜像备份tar文件
❯ docker load -i ~/photoprism-container-backup.tar

# 重新使用镜像运行容器
docker run -d -p 32342:2342 container-backup photoprism-container-backup

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