lxc-idmap

lxc-idmap is a utility that generates the configuration needed to map the provided UIDs and GIDs between the host and a lxc container.

Usage

``` Usage: lxc-idmap [OPTIONS] [MAPPINGS]...

Arguments: [MAPPINGS]... Mappings for both uid and gid

Options: -u, --uid Mappings only for uid

-g, --gid Mappings only for gid

  --debug
      Print debug messages in stderr

-h, --help Print help (see a summary with '-h')

-V, --version Print version

Mappings can be provided in the following format:

CT_ID_START[-CT_ID_END][:HOST_ID_START[-HOST_ID_END]]

CTIDSTART and CTIDEND are the UID/GID range start and end from the container's view. If CTIDEND is not provided it defaults to the same value as CTIDSTART. HOSTIDSTART and HOSTIDEND are the UID/GID range start and end from the host's view. If HOSTIDEND is not provided it defaults to HOSTIDSTART + CTIDEND - CTIDSTART

All range bounds are inclusive. ```

Example

``` $ lxc-idmap 1005

ct.conf

UID mappings

lxc.idmap = u 0 100000 1005 lxc.idmap = u 1005 1005 1 lxc.idmap = u 1006 101006 64530

GID mappings

lxc.idmap = g 0 100000 1005 lxc.idmap = g 1005 1005 1 lxc.idmap = g 1006 101006 64530

/etc/subuid

1000:100000:65536 1000:1005:1

/etc/subgid

1000:100000:65536 1000:1005:1 ```