You want to automate daily backups of a Docker volume dbdata to a host directory /backups. Which approach is best?

hard📝 Workflow Q8 of 15

Docker - Production Patterns

You want to automate daily backups of a Docker volume dbdata to a host directory /backups. Which approach is best?

AManually run docker run commands each day

BCreate a cron job on the host that runs a container to tar the volume into /backups

CUse docker commit to save the volume state daily

DRestart Docker daemon daily to trigger automatic backups

Step-by-Step Solution

Solution:

Step 1: Identify automation method
Automating backups requires scheduling a repeatable command, like a cron job on the host.
Step 2: Choose correct backup technique
Running a container that mounts the volume and host backup directory to create tar archives is effective and scriptable.
Final Answer:
Create a cron job on the host that runs a container to tar the volume into /backups -> Option B
Quick Check:
Automate backups with cron + container tar [OK]

Quick Trick: Use host cron + container tar for automated backups [OK]

Common Mistakes:

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