bootstrap-vz/bootstrapvz/plugins/docker_daemon/tasks.py
Victor Marmol fb8507c0f4 Enable the memory cgroup for the Docker plugin.
This will allow for the enforcement and tracking of memory limits and usage.
2014-06-23 19:38:38 +00:00

62 lines
1.9 KiB
Python

from bootstrapvz.base import Task
from bootstrapvz.common import phases
from bootstrapvz.common.tasks import boot
from bootstrapvz.common.tasks import initd
from bootstrapvz.providers.gce.tasks import boot as gceboot
import os
import os.path
import shutil
ASSETS_DIR = os.path.normpath(os.path.join(os.path.dirname(__file__), 'assets'))
class AddDockerDeps(Task):
description = 'Add packages for docker deps'
phase = phases.package_installation
DOCKER_DEPS = ['aufs-tools', 'btrfs-tools', 'git', 'iptables',
'procps', 'xz-utils', 'ca-certificates']
@classmethod
def run(cls, info):
for pkg in cls.DOCKER_DEPS:
info.packages.add(pkg)
class AddDockerBinary(Task):
description = 'Add docker binary'
phase = phases.system_modification
DOCKER_URL = 'https://get.docker.io/builds/Linux/x86_64/docker-latest'
@classmethod
def run(cls, info):
import urllib
bin_docker = os.path.join(info.root, 'usr/bin/docker')
urllib.urlretrieve(cls.DOCKER_URL, bin_docker)
os.chmod(bin_docker, 0755)
class AddDockerInit(Task):
description = 'Add docker init script'
phase = phases.system_modification
successors = [initd.InstallInitScripts]
@classmethod
def run(cls, info):
init_src = os.path.join(ASSETS_DIR, 'init.d/docker')
info.initd['install']['docker'] = init_src
default_src = os.path.join(ASSETS_DIR, 'default/docker')
default_dest = os.path.join(info.root, 'etc/default/docker')
shutil.copy(default_src, default_dest)
class EnableMemoryCgroup(Task):
description = 'Change grub configuration to enable the memory cgroup'
phase = phases.system_modification
successors = [boot.InstallGrub]
predecessors = [boot.ConfigureGrub, gceboot.ConfigureGrub]
@classmethod
def run(cls, info):
from bootstrapvz.common.tools import sed_i
grub_config = os.path.join(info.root, 'etc/default/grub')
sed_i(grub_config, r'^(GRUB_CMDLINE_LINUX*=".*)"\s*$', r'\1 cgroup_enable=memory"')