Best enterprise data backup software12/2/2023 ![]() The snapshot in question is removed to free up the space.Docker utility is executed and the data is saved.Current state of the container is saved to the new image.Bacula’s Docker module provides a lot of useful additional features alongside the core backup and recovery ones.ĭocker backup with Bacula Enterprise consists of three simple steps: Docker backup and restore with Bacula Enterpriseīacula Enterprise utilizes its modular capability to allow for native integration of various systems and services, including Docker. It’s important to mention that this method should not be relied on as a single backup source since the backup data is still stored on the host, and therefore would be lost in case of a data loss or disaster that affects the host as well. If the procedure is done correctly, the entire state of the application should be restored. $ docker run -d -v dckr-volume-2:/var/lib/dckr/content -p 80:2368 dckr:latest ![]() ![]() The first step is to stop the container using the following command: In this example our container in question is called dckr-site with the volume called dckr-volume, it’s mounted at /var/lib/dckr/content/ and stores all of the data there. This copy is the backup we’re looking for. The idea of a docker backup volume is to get a volume copy as a compressed file in one of the local directories. Usually, Docker volumes are managed by the Docker daemon, however, we will not be interacting with that at all. ![]() The entirety of Docker volume data may be harder to make visible inside of your centralized file system, since it works in a slightly different manner than the traditional storage locations – and you would have to create Docker backup volumes for the same purpose you usually create backups of your regular data. You would also have to know multiple commands to be able to grab a shell on a running Docker to be able to see the current status. For example, you would have to learn several different commands to do something as simple as copying information out of the container. Of course, using docker volumes to store container data might not exactly be convenient and there are some growing pains here and there. Since Docker volumes are borderline necessary to realistically create different Docker containers with persistent data, it is only natural to make sure that you also have Docker backup volumes – this kind of data is at least as important as any other data inside of your system, if not more important. At the same time, this portable approach makes it possible to manage Docker volumes with various external tools – such as bucket based storage, nfs, etc. Volumes themselves are portable when it comes to different Docker installations, meaning that there is no need to worry about the host’s operating system. However, this kind of isolation also makes it harder to create Docker backup volumes.Īdditionally, volumes eliminate the need to worry about GUI and UID between the Docker container system and the OS. For example, data that is stored in the Docker container via volumes gets effectively isolated from the rest of the file system, making it that much harder to be affected by system-wide cyberattacks. This kind of approach offers several different advantages. When it comes to persistent data management inside of the running Docker containers, Docker volumes are the most recommended way to manage it all. These volumes need to be backed up for data continuity. Docker volume backup and restoreĪnother type of Docker backups is via volumes – persistent storage providers for Docker containers. # docker pull localhost:5000/backup-image:v1Īs with the previous example, both the localhost name and the port number is the subject to change if needed.
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