bootstrap-vz/bootstrapvz/providers/gce/tasks/boot.py

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from bootstrapvz.base import Task
from bootstrapvz.common import phases
from bootstrapvz.common.tasks import grub
import os.path
class ConfigureGrub(Task):
description = 'Change grub configuration to allow for ttyS0 output'
phase = phases.system_modification
successors = [grub.InstallGrub_1_99, grub.InstallGrub_2]
@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*$', r'\1console=ttyS0,38400n8"')
sed_i(grub_config, r'^.*(GRUB_TIMEOUT=).*$', r'GRUB_TIMEOUT=0')