podman-machine-os-apply - Apply an OCI image to a Podman Machine's OS
podman machine os apply [options] image [vm]
Apply machine OS changes from an OCI image.
VM's that use OS's that use rpm-ostreee have the capability to rebase
itself from the content of an OCI image.
podman machine image apply takes an OCI image with
container native ostree functionality and rebases itself on that
image.
By default, Podman machines on Mac, Linux, and Windows Hyper-V use a customized rpm-ostree based distribution (Fedora CoreOS). Machines based on Microsoft WSL use a customized Fedora distribution and cannot be updated with this command.
Note: WSL-based machines are upgradable by using the
podman machine ssh <machine_name> command followed by
sudo dnf update. This can, however, result in unexpected
results in Podman client and server version differences.
Podman machine images are stored as OCI images at
quay.io/podman/machine-os. When applying an image using
this command, the fully qualified OCI reference name must be used
including tag where the tag is the version of Podman that is inside the
VM. By default, Podman will attempt to pull only the statement version
as itself.
For more information, see the rpm-ostree documentation.
The default machine name is podman-machine-default. If a
machine name is not specified as an argument, then the OS changes will
be applied to podman-machine-default.
Print usage statement.
Restart VM after applying changes.
Update the default Podman machine to the latest development version of the bootable OCI image.
Note: This may result in having a newer Podman version inside the machine than the client. Unexpected results may occur.
Update the default Podman machine to the most recent Podman 5.4 bootable OCI image.
$ podman machine os apply quay.io/podman/machine-os:5.4
Update the specified Podman machine to latest Podman 5.3 bootable OCI image.
$ podman machine os apply quay.io/podman/machine-os:5.3 mymachine
podman(1), podman-machine(1), podman-machine-os(1)
February 2023, Originally compiled by Ashley Cui acui@redhat.com