How to Take a Backup and restore of a Docker Container?
Introduction:
Backing up Docker containers is critical for ensuring business continuity, especially in production environments. But unlike traditional applications, Docker containers are ephemeral by design. In this guide.
Step 1:
First, list all running containers.
| docker ps -a |
Step 2:
Use the docker export command to save the container’s entire filesystem to a .tar file.
| docker export image_name > image_backup.tar |
Step 3:
Restore the Backup with “docker import” command
| docker import image_backup.tar image_restored:latest |
Verify:
| docker images |
Step 4:
Run a Container from the Restored Image.
| docker run -it –name container_restored image_restored:latest /bin/bash |
Conclusion:
Backing up a Docker container using the docker export and “docker import” method is a straightforward way to capture the entire filesystem of a container at a point in time. It’s especially useful for archiving or migrating container states across systems.
