人们如何处理Docker容器的持久存储?
我目前正在使用这种方法:构建映像,例如PostgreSQL,然后启动容器
docker run --volumes-from c0dbc34fd631 -d app_name/postgres
恕我直言,这有缺点,我不能(意外地)删除容器“c0dbc34fd631”。
另一个想法是将主机卷“-v”挂载到容器中,然而,容器中的用户id不一定与来自主机的用户id匹配,然后权限可能会被打乱。
注意:除了——volumes-from 'cryptic_id',你还可以使用——volumes-from my-data-container,其中my-data-container是你分配给仅数据容器的名称,例如docker run——name my-data-container…(见公认答案)
根据您的需要,管理持久数据有几个级别:
Store it on your host
Use the flag -v host-path:container-path to persist container directory data to a host directory.
Backups/restores happen by running a backup/restore container (such as tutumcloud/dockup) mounted to the same directory.
Create a data container and mount its volumes to your application container
Create a container that exports a data volume, use --volumes-from to mount that data into your application container.
Backup/restore the same as the above solution.
Use a Docker volume plugin that backs an external/third-party service
Docker volume plugins allow your datasource to come from anywhere - NFS, AWS (S3, EFS, and EBS)
Depending on the plugin/service, you can attach single or multiple containers to a single volume.
Depending on the service, backups/restores may be automated for you.
While this can be cumbersome to do manually, some orchestration solutions - such as Rancher - have it baked in and simple to use.
Convoy is the easiest solution for doing this manually.