Difference between revisions of "Podman"
From NixOS Wiki
(remove (presumably unintended) double negation (keep single negation instead)) |
m (Add notes about getting podman-compose DNS working) |
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# Create a `docker` alias for podman, to use it as a drop-in replacement | # Create a `docker` alias for podman, to use it as a drop-in replacement | ||
dockerCompat = true; | dockerCompat = true; | ||
| + | |||
| + | # Required for containers under podman-compose to be able to talk to each other. | ||
| + | defaultNetwork.dnsname.enable = true; | ||
}; | }; | ||
}; | }; | ||
} | } | ||
</syntaxHighlight> | </syntaxHighlight> | ||
| + | |||
| + | === podman-compose === | ||
| + | <code>podman-compose</code> is a drop-in replacement for <code>docker-compose</code> | ||
=== Using podman with ZFS === | === Using podman with ZFS === | ||
Revision as of 22:18, 4 October 2022
Podman can run rootless containers and be a drop-in replacement for Docker.
Install and configure podman with NixOS service configuration
{ pkgs, ... }:
{
virtualisation = {
podman = {
enable = true;
# Create a `docker` alias for podman, to use it as a drop-in replacement
dockerCompat = true;
# Required for containers under podman-compose to be able to talk to each other.
defaultNetwork.dnsname.enable = true;
};
};
}
podman-compose
podman-compose is a drop-in replacement for docker-compose
Using podman with ZFS
For root using ZFS, podman needs access to the ZFS tools.
virtualisation.podman.extraPackages = [ pkgs.zfs ];
Rootless can't use ZFS directly but the overlay needs POSIX ACL enabled for the underlying ZFS filesystem, ie., acltype=posixacl
Use Podman within nix-shell
https://gist.github.com/adisbladis/187204cb772800489ee3dac4acdd9947
Note that rootless podman requires newuidmap (from shadow). If you're not on NixOS, this cannot be supplied by the Nix package 'shadow' since setuid/setgid programs are not currently supported by Nix.
Run Podman containers as systemd services
{
virtualisation.oci-containers.backend = "podman";
virtualisation.oci-containers.containers = {
container-name = {
image = "container-image";
autoStart = true;
ports = [ "127.0.0.1:1234:1234" ];
};
};
}