this post was submitted on 22 Feb 2024
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it's not always sunny with podman (lemmy.ml)
submitted 10 months ago* (last edited 10 months ago) by GravitySpoiled@lemmy.ml to c/linux@lemmy.ml
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I am moving from docker to podman and selinux because I thought that podman is more secure and hence, the future. I thought the transition will be somewhat seamless. I even prepaired containers but once I migrated I still ran into issues.

minor issue: it's podman-compose instead of podman compose. The hyphen feels like a step back because we moved from docker-compose to docker compose. But thT's not a real issue.

podman does not autostart containers after boot. You have to manually start them, or write a start script. Or create a systemd unit for each of them.

Spinning up fresh services works most of the time but using old services that worked great with docker are a pain. I am wasting minutes after minutes because I struggle with permissions and other weird issues.

podman can't use lower number ports such that you have to map the ports outside of the machine and forward them properly.

Documentation and tutorials are "all" for docker. Github issues are "all" for docker. There isn't a lot of information floating around.

I'm still not done and I really wonder why I should move forward and not go back to docker. Painful experience so far. https://linuxhandbook.com/docker-vs-podman/ and following pages helped me a lot to get rid of my frustration with podman.

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[–] nickwitha_k@lemmy.sdf.org 3 points 10 months ago

For the low-port issue, maybe try something like how K8S tends to handle it:

  • One container that is either rootful or allowed to use low ports. Run a reverse proxy like HAProxy or Envoy in this.
  • All other containers for services, run on high ports, pointing to them in the reverse proxy container's config.
  • Don't use bare http, unless required. Getting valid TLS certs is dead easy and free with LetsEncrypt.