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27 commits

Author SHA1 Message Date
Michael Crosby
dcbca94904 Add external function to get cgroup stats 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-20 17:36:20 -07:00
Michael Crosby
ab15aa234c Refactor stats and add them to all subsystems 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-20 12:02:39 -07:00
Michael Crosby
b5b44ad439 Squashed commit of the following: 
commit 75af1649b063abbc5d662fd2f8bc4ff62c927687
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 01:32:42 2014 -0400

    more refactor

commit 43b36d0f15d634497127bcb17dacaa70ae92e903
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 01:11:49 2014 -0400

    refactored cgroup param parsing to util func

commit e3738b0168a075bd92ec828879b0e46bdbbe3845
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 00:57:19 2014 -0400

    dat error checking

commit 57872bcc59403ecd308cfe97c78f73d6ca58d165
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 00:43:25 2014 -0400

    proper use of fmt.Errorf

commit 43dad6acc0cb21aac2b04ce074699879898ee820
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 00:36:45 2014 -0400

    proper placement of defer

commit b7f20b934b2bc92cd39397dbc608b77bff28493c
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 00:34:39 2014 -0400

    defers, error checking, panic avoidance

commit 7a9a6ff267f8806dfe6676486f73fe89b72968fb
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 00:22:00 2014 -0400

    data param to use container info instead of host

commit 0e0cf7309be1644687160d6519db792b23cd26e9
Author: Evan Hazlett <ejhazlett@gmail.com>
Date:   Sun Apr 20 00:11:29 2014 -0400

    added stats for cpuacct, memory, and blkio

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-20 11:34:28 -07:00
Michael Crosby
810cf722cc Add remove method to subsystems 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-18 22:17:31 -07:00
Michael Crosby
bb89b83c68 Break down groups into subsystems 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-18 22:10:30 -07:00
Michael Crosby
8cc8aca9cc Move raw cgroups into fs package (filesystem) 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-18 21:34:26 -07:00
Michael Crosby
9f508e4b3e Move systemd code into pkg 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-18 21:30:08 -07:00
Michael Crosby
a183681b1d Refactor cgroups file locations 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-18 21:14:58 -07:00
Michael Crosby
f95367f57f Ignore not exist errors for joining default subsystems 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-14 00:07:48 +00:00
Alexander Larsson
e5ba166e75 Join memory and cpu cgroup in systemd too 
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: crosbymichael)
 2014-04-11 17:29:40 +00:00
Michael Crosby
1dd3c38cb5 Join cpuacct, freezer, perf_event, and blkio groups 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-11 17:28:27 +00:00
Michael Crosby
27ceac34af Setup cgroups for all subsystems 
Fixes #5117
Fixes #5118
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-04-11 17:28:27 +00:00
Kevin Wallace
cba2eef566 Allow non-privileged containers to create device nodes. 
Such nodes could already be created by importing a tarball to a container; now
they can be created from within the container itself.

This gives non-privileged containers the mknod kernel capability, and modifies
their cgroup settings to allow creation of *any* node, not just whitelisted
ones.  Use of such nodes is still controlled by the existing cgroup whitelist.

Docker-DCO-1.1-Signed-off-by: Kevin Wallace <kevin@pentabarf.net> (github: kevinwallace)
 2014-04-03 18:44:13 +00:00
Michael Crosby
ffa86e398a Fix compile and unit test errors after merge 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-27 08:25:01 +00:00
Michael Crosby
42be9fb9d2 Merge branch 'master' into pluginflag 
Conflicts:
	pkg/cgroups/cgroups.go
	pkg/libcontainer/nsinit/exec.go
	pkg/libcontainer/nsinit/init.go
	pkg/libcontainer/nsinit/mount.go
	runconfig/hostconfig.go
	runconfig/parse.go
	runtime/execdriver/driver.go
	runtime/execdriver/lxc/lxc_template.go
	runtime/execdriver/lxc/lxc_template_unit_test.go
	runtime/execdriver/native/default_template.go
	runtime/execdriver/native/driver.go

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-27 08:00:18 +00:00
Alexander Larsson
33fab479ef cgroups: Add systemd implementation of cgroups 
This implements cgroup.Apply() using the systemd apis.
We create a transient unit called "docker-$id.scope" that contains
the container processes. We also have a way to set unit specific
properties, currently only defining the Slice to put the
scope in.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-27 22:44:31 +01:00
Alexander Larsson
7cd539bc3d cgroups: Join groups by writing to cgroups.procs, not tasks 
cgroups.procs moves all the threads of the process, and "tasks" just
the one thread. I believe there is a risk that we move the main thread,
but then we accidentally fork off one of the other threads if the go
scheduler randomly switched to another thread. So, it seems safer (and
more correct) to use cgroups.procs.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-27 21:47:47 +01:00
Alexander Larsson
fce532280b cgroups: Splity out Apply/Cleanup to separate file/interface 
This leaves only the generic cgroup helper functions in cgroups.go and
will allow easy implementations of other cgroup managers.

This also wires up the call to Cleanup the cgroup which was missing
before.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-27 21:47:47 +01:00
Michael Crosby
cb12e80969 Add cpuset.cpus to cgroups and native driver options 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-24 05:33:11 +00:00
Michael Crosby
d8025d1066 Fix cgroups swap issue when it is not supported 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-25 19:45:57 -08:00
Michael Crosby
d388db815c Look for cpu subsystem instead of memory 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-24 10:46:20 -08:00
Michael Crosby
ccc915b7b9 Move rest of cgroups functions into cgroups pkg 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
1cecb00003 Refactory cgroups into general pkg 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Alexander Larsson
3de41b34a2 libcontainer: Initial version of cgroups support 
This is a minimal version of raw cgroup support for libcontainer.
It has only enough for what docker needs, and it has no support
for systemd yet.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-02-21 14:56:16 -08:00
Alexander Larsson
455aa20483 execdriver: Make GetPidsForContainer() a driver call 
The current implementation is lxc specific.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-01-28 16:21:49 +01:00
Paul Nasrat
1e4c9aed91 Don't expose cgroups via the execdriver API. 
Use Resources to represent container limits rather than a cgroup specific field.

Docker-DCO-1.1-Signed-off-by: Paul Nasrat <pnasrat@gmail.com> (github: pnasrat)
 2014-01-20 17:06:24 -05:00
Paul Nasrat
13860a3ba9 Extract cgroups pkg. 
Initial move before enhancing cgroups package.

Docker-DCO-1.1-Signed-off-by: Paul Nasrat <pnasrat@gmail.com> (github: pnasrat)
 2014-01-20 14:15:44 -05:00