forked from brl/citadel
57 lines
2.1 KiB
Plaintext
57 lines
2.1 KiB
Plaintext
|
|
||
|
|
= Citadel Realms
|
||
|
|
[topic]
|
||
|
|
@link[guide >index#user]
|
||
|
|
|
||
|
|
Citadel contains only the base operating system and the GNOME desktop, it does not
|
||
|
|
include any applications. To be able to install and run applications Citadel can
|
||
|
|
create spaces which are called Realms.
|
||
|
|
|
||
|
|
A Realm is a container similar to a Docker or LXC container in which any Linux
|
||
|
|
distribution could be installed. We use a Debian based image but it would not be
|
||
|
|
difficult to create an image for another Linux distribution.
|
||
|
|
|
||
|
|
The realm containers are launched with systemd-nspawn but this is a detail of
|
||
|
|
how they are implemented and not something it is necessary to learn about in
|
||
|
|
order to use them.
|
||
|
|
|
||
|
|
== The $em(current) realm
|
||
|
|
|
||
|
|
Multiple realms may be launched at once but the GNOME Desktop is only associated with
|
||
|
|
one of the running realms. This realm is called the `current` realm.
|
||
|
|
|
||
|
|
When displaying applications available to launch from the desktop, GNOME will only
|
||
|
|
be aware of applications that are installed in the realm which is set as `current`
|
||
|
|
and any application launched from the desktop will run inside this current realm.
|
||
|
|
|
||
|
|
Setting another realm as current does not affect any applications that are already running.
|
||
|
|
Changing the current realm only means that any further applications which are launched
|
||
|
|
will now run in the newly chosen realm.
|
||
|
|
|
||
|
|
== Realm directory layout
|
||
|
|
|
||
|
|
The realms base directory is stored on the storage partition at `/storage/realms` and is bind mounted to `/realms` on the root filesystem for convenience.
|
||
|
|
|
||
|
|
[screen]
|
||
|
|
/realms
|
||
|
|
config
|
||
|
|
/Shared
|
||
|
|
/skel
|
||
|
|
/default.realm -> realm-main
|
||
|
|
/realm-main
|
||
|
|
/realm-project
|
||
|
|
/realm-testing
|
||
|
|
|
||
|
|
=== /realms/config
|
||
|
|
|
||
|
|
This is the global realm configuration file. Options set in this file apply to every realm
|
||
|
|
unless the same option has been overridden with a different value in the config file for
|
||
|
|
a realm.
|
||
|
|
|
||
|
|
=== /realms/Shared
|
||
|
|
|
||
|
|
This directory is bind mounted to `/home/user/Shared` of each running realm that has
|
||
|
|
the option `use-shared-dir` enabled. It's a convenient way to move files between
|
||
|
|
different realms and between citadel and realms.
|
||
|
|
|