Find out how to switch on the Docker checkpoint function for running container snapshots with this quick tutorial from expert Jack Wallen.
In a recent TechRepublic video, Jack Wallen demonstrates how to enable the Docker checkpoint function to take photos of your running containers to conserve a state for backup or later use. The following is a modified records of his tutorial.
Initially, you should include the repository for the CRIU package with the following command: SUDU add-apt-repository ppa: criu/ppa.
Update APT with this command: sudo apt-get update.
Then set up CRIU with this command: sudo apt-get install criu -y.
Next, we need to allow Docker speculative functions.
First, develop a new file with the command sudo nano/ etc/docker/daemon. json.
Because file, add the following: “Speculative”: true. Conserve and close the file.
Reboot the Docker Daemon with sudo systemctl restart docker.
Release an NGINX container with the command docker run– name nginx-checkpoint -p 8005:80 -d nginx.
Develop the checkpoint with this command: docker checkpoint create– leave-running=real nginx-checkpoint checkpoint.
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