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podman/docs/source/markdown/podman-machine-set.1.md
Ashley Cui d9ff0fd15d Only allow Rootless runs of Podman Machine 
Podman Machine crashes if run as root. When creating the machine, we write the ignition so that the UID of the core user matches the UID of the user on the host. We by default, create the root user on the machine with UID 0. If the user on the host is root, the core UID and the Root UID collide, causing a the VM not to boot.

[NO NEW TESTS NEEDED]

Signed-off-by: Ashley Cui <acui@redhat.com>
2022-06-29 09:19:09 -04:00

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% podman-machine-set(1)

NAME

podman-machine-set - Sets a virtual machine setting

SYNOPSIS

podman machine set [options] [name]

DESCRIPTION

Change a machine setting.

Rootless only.

OPTIONS

--cpus=number

Number of CPUs. Only supported for QEMU machines.

--disk-size=number

Size of the disk for the guest VM in GB. Can only be increased. Only supported for QEMU machines.

--help

Print usage statement.

--memory, -m=number

Memory (in MB). Only supported for QEMU machines.

--rootful=true|false

Whether this machine should prefer rootful (true) or rootless (false) container execution. This option will also update the current podman remote connection default if it is currently pointing at the specified machine name (or podman-machine-default if no name is specified).

Unlike podman system connection default this option will also make the API socket, if available, forward to the rootful/rootless socket in the VM.

EXAMPLES

To switch the default VM podman-machine-default from rootless to rootful:

$ podman machine set --rootful

or more explicitly:

$ podman machine set --rootful=true

To switch the default VM podman-machine-default from rootful to rootless:

$ podman machine set --rootful=false

To switch the VM myvm from rootless to rootful:

$ podman machine set --rootful myvm

SEE ALSO

podman(1), podman-machine(1)

HISTORY

February 2022, Originally compiled by Jason Greene jason.greene@redhat.com