this post was submitted on 15 Mar 2025
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Advantages of rootless podman? (sh.itjust.works)
submitted 1 year ago* (last edited 1 year ago) by someacnt@sh.itjust.works to c/selfhosted@lemmy.world
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From what I have seen, rootless podman seems to take more effort (even if marginal) than rootful one. I want to make a more informed decision for the containers, so I would like to ask.

  1. What is a rootless podman good for? How much does it help in terms of security, and does it have other benefits?
  2. One of the benefits commonly mentioned is for when container is breached. Then, running container on sudo-capable user would give no security benefits. Does it mean I should run podman services on a non-privileged user?

Thank you!

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[–] sugar_in_your_tea@sh.itjust.works 1 points 1 year ago

In an ideal world, sure, but all software has bugs (example vulnerabilities here). Proper security design doesn't ask "how can X happen?" but "what if X happens?" If you break out of a docker container, you have root access to the system because the docker daemon runs as root.

With podman, there is no root docker daemon, so you'd also need privilege escalation in addition to breaking out of the container.