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8 Commits

Author SHA1 Message Date
Martin Pitt
574edc9006 nspawn: Add try-{host,guest} journal link modes
--link-journal={host,guest} fail if the host does not have persistent
journalling enabled and /var/log/journal/ does not exist. Even worse, as there
is no stdout/err any more, there is no error message to point that out.

Introduce two new modes "try-host" and "try-guest" which don't fail in this
case, and instead just silently skip the guest journal setup.

Change -j to mean "try-guest" instead of "guest", and fix the wrong --help
output for it (it said "host" before).

Change systemd-nspawn@.service.in to use "try-guest" so that this unit works
with both persistent and non-persistent journals on the host without failing.

https://bugs.debian.org/770275
2014-11-21 14:27:26 +01:00
Lennart Poettering
a931ad47a8 core: introduce new Delegate=yes/no property controlling creation of cgroup subhierarchies
For priviliged units this resource control property ensures that the
processes have all controllers systemd manages enabled.

For unpriviliged services (those with User= set) this ensures that
access rights to the service cgroup is granted to the user in question,
to create further subgroups. Note that this only applies to the
name=systemd hierarchy though, as access to other controllers is not
safe for unpriviliged processes.

Delegate=yes should be set for container scopes where a systemd instance
inside the container shall manage the hierarchies below its own cgroup
and have access to all controllers.

Delegate=yes should also be set for user@.service, so that systemd
--user can run, controlling its own cgroup tree.

This commit changes machined, systemd-nspawn@.service and user@.service
to set this boolean, in order to ensure that container management will
just work, and the user systemd instance can run fine.
2014-11-05 18:49:14 +01:00
Lennart Poettering
ce38dbc84b nspawn: when running in a service unit, use systemd for restarts
THis way we can remove cgroup priviliges after setup, but get them back
for the next restart, as we need it.
2014-07-03 12:51:07 +02:00
Jonathan Liu
d8e40d62ab units: use KillMode=mixed for systemd-nspawn@.service
This causes the container to shut down cleanly when the service is
stopped.
2014-05-30 09:36:29 -04:00
Lennart Poettering
c480d2f8bc units: make use of nspawn's --keep-unit switch in systemd-nspawn@.service 2014-02-11 21:13:51 +01:00
Zbigniew Jędrzejewski-Szmek
9cb74bcb23 man,units: fix installation of systemd-nspawn@.service and add example 2013-11-09 19:02:53 -05:00
Lennart Poettering
3331234adc nspawn: update unit file
ControlGroup= is obsolete, so let's drop it from the default nspawn unit
file.
2013-09-17 11:59:47 -05:00
Lennart Poettering
05947befce units: add an easy-to-use unit template file systemd-nspawn@.service for running containers as system services 2013-04-30 08:36:02 -03:00