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containers / podlet

Generate Podman Quadlet files from a Podman command, compose file, or existing object
https://crates.io/crates/podlet
Mozilla Public License 2.0
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Convert docker-compose files into Kubernetes YAML or `.container` quadlet files #9

Closed Lunarequest closed 1 year ago

Lunarequest commented 1 year ago

it would be very useful it podlet could convert compose files to quadlet files!

k9withabone commented 1 year ago

I agree! However, maybe generating kubernetes pod yaml from a compose file would be a better fit? I guess it depends on if you want each container to be more separate with each having their own .container file or all together in a pod defined in a kubernetes yaml file with a .kube quadlet file for systemd integration.

Lunarequest commented 1 year ago

I agree! However, maybe generating kubernetes pod yaml from a compose file would be a better fit? I guess it depends on if you want each container to be more separate with each having their own .container file or all together in a pod defined in a kubernetes yaml file with a .kube quadlet file for systemd integration.

the main use case for docker-compose is that kubernetes is can be overly "heavy" so to speak for a simple container deployment eg just a webserver and a db. However I see the other side where someone may want to "translate" the compose to a k3s+podman deployment so maybe a flag to switch between the 2 modes?

k9withabone commented 1 year ago

The other thing with podman pods is that all containers in a pod share a network and UID/GID namespace. From my understanding, the default network configuration for rootless podman is such that containers not in a pod can't communicate with each other unless they use the host's IP. So someone translating a docker-compose file into separate .container files won't necessarily have the same behavior that they are expecting. However, a .network file could also be created that all the containers join via the "Network=" option. I think I'm going to try to get in touch with the podman-compose people to see what they might recommend and see where they had trouble converting docker things into podman.

k9withabone commented 1 year ago

Also, I've only been using docker/podman for about a year and only with my own small home lab. I haven't tried using k3s or anything very complicated, so please correct me if I say something wrong, or you have a different/better opinion.