Question 84947 in Docker Question posted in
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How is Podman different from Docker?

I know that Docker and Kubernetes solve the same problem. Most users can simply alias Docker to Podman (alias docker=podman) without any problems.

So what is the difference between them?

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Answers


  1. 0

    Here is some core difference between Docker and Podman:

    Docker Podman
    Docker is a monolithic, powerful, independent tool Podman has a modular approach, relying on specialized tools for specific duties
    Docker uses daemon Podman doesn’t use daemon
    Docker daemon requires root privileges Podman containers can run non-privileged users
    It is less secure than Podman cause it needs root access It is more secure than docker cause rootless containers are considered safer than others

    You can get a lot of articles about Docker vs Podman on the internet.

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  2. 0

    Podman is more secure and lightweight than Docker. Docker relies on a daemon running in the background of your system. Whenever you access the Docker CLI or API to run and manage containers, you are, in effect, communicating with that daemon. Podman is daemonless! If you execute a command with the Podman CLI, it will execute those commands and run the containers directly on the system. Thus, Podman doesn’t rely on a Single Point of Failure, and, equally important, you can run containers rootless. The Docker daemon runs in the background with root privileges. In effect:

    1. Podman containers run as a non-root user by default

    2. Users can run their own containers, and while doing that, the containers run in a user namespace where they are strictly isolated and not accessible to other users

    3. Containers are daemonless and run on top of the lightweight CRI-o container runtime

    Note rootless containers do not have an IP address, can only bind to a nonprivileged port and must be the owner of the directory they use for storage.

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