bootstrap-vz/bootstrapvz/providers/ec2/__init__.py
Anders Ingemann cf6234bafd Split grub config into small tasks
The way boot options for linux and config params for grub
were configured gave rise to quite a few bugs.
The configuration has now been abstracted so that
options can be added without interfering with the work
of other tasks (no more sed_i!)
2016-06-04 18:48:54 +02:00

140 lines
5.6 KiB
Python

from bootstrapvz.common import task_groups
import tasks.packages
import tasks.connection
import tasks.host
import tasks.ami
import tasks.ebs
import tasks.filesystem
import tasks.boot
import tasks.network
import tasks.initd
from bootstrapvz.common.tasks import volume
from bootstrapvz.common.tasks import filesystem
from bootstrapvz.common.tasks import boot
from bootstrapvz.common.tasks import grub
from bootstrapvz.common.tasks import initd
from bootstrapvz.common.tasks import loopback
from bootstrapvz.common.tasks import kernel
def validate_manifest(data, validator, error):
import os.path
validator(data, os.path.join(os.path.dirname(__file__), 'manifest-schema.yml'))
from bootstrapvz.common.bytes import Bytes
if data['volume']['backing'] == 'ebs':
volume_size = Bytes(0)
for key, partition in data['volume']['partitions'].iteritems():
if key != 'type':
volume_size += Bytes(partition['size'])
if int(volume_size % Bytes('1GiB')) != 0:
msg = ('The volume size must be a multiple of 1GiB when using EBS backing')
error(msg, ['volume', 'partitions'])
else:
validator(data, os.path.join(os.path.dirname(__file__), 'manifest-schema-s3.yml'))
bootloader = data['system']['bootloader']
virtualization = data['provider']['virtualization']
backing = data['volume']['backing']
partition_type = data['volume']['partitions']['type']
enhanced_networking = data['provider']['enhanced_networking'] if 'enhanced_networking' in data['provider'] else None
if virtualization == 'pvm' and bootloader != 'pvgrub':
error('Paravirtualized AMIs only support pvgrub as a bootloader', ['system', 'bootloader'])
if backing != 'ebs' and virtualization == 'hvm':
error('HVM AMIs currently only work when they are EBS backed', ['volume', 'backing'])
if backing == 's3' and partition_type != 'none':
error('S3 backed AMIs currently only work with unpartitioned volumes', ['system', 'bootloader'])
if enhanced_networking == 'simple' and virtualization != 'hvm':
error('Enhanced networking only works with HVM virtualization', ['provider', 'virtualization'])
def resolve_tasks(taskset, manifest):
from bootstrapvz.common.releases import wheezy, jessie
taskset.update(task_groups.get_standard_groups(manifest))
taskset.update(task_groups.ssh_group)
taskset.update([tasks.host.AddExternalCommands,
tasks.packages.DefaultPackages,
tasks.connection.SilenceBotoDebug,
tasks.connection.GetCredentials,
tasks.ami.AMIName,
tasks.connection.Connect,
boot.BlackListModules,
boot.DisableGetTTYs,
initd.AddExpandRoot,
initd.RemoveHWClock,
initd.InstallInitScripts,
tasks.ami.RegisterAMI,
])
if manifest.release > wheezy:
taskset.add(tasks.network.InstallNetworkingUDevHotplugAndDHCPSubinterface)
if manifest.release <= wheezy:
# The default DHCP client `isc-dhcp' doesn't work properly on wheezy and earlier
taskset.add(tasks.network.InstallDHCPCD)
taskset.add(tasks.network.EnableDHCPCDDNS)
if manifest.release >= jessie:
taskset.add(tasks.packages.AddWorkaroundGrowpart)
taskset.add(initd.AdjustGrowpartWorkaround)
if manifest.provider.get('install_init_scripts', True):
taskset.add(tasks.initd.AddEC2InitScripts)
if manifest.volume['partitions']['type'] != 'none':
taskset.add(initd.AdjustExpandRootScript)
if manifest.system['bootloader'] == 'pvgrub':
taskset.add(grub.AddGrubPackage)
taskset.update([grub.AddGrubPackage,
grub.InitGrubConfig,
grub.SetGrubTerminalToConsole,
grub.RemoveGrubTimeout,
grub.DisableGrubRecovery,
tasks.boot.CreatePVGrubCustomRule,
tasks.boot.ConfigurePVGrub,
grub.WriteGrubConfig,
tasks.boot.UpdateGrubConfig,
tasks.boot.LinkGrubConfig])
if manifest.volume['backing'].lower() == 'ebs':
taskset.update([tasks.host.GetInstanceMetadata,
tasks.ebs.Create,
tasks.ebs.Snapshot,
])
taskset.add(tasks.ebs.Attach)
taskset.discard(volume.Attach)
if manifest.volume['backing'].lower() == 's3':
taskset.update([loopback.AddRequiredCommands,
tasks.host.SetRegion,
loopback.Create,
tasks.filesystem.S3FStab,
tasks.ami.BundleImage,
tasks.ami.UploadImage,
tasks.ami.RemoveBundle,
])
taskset.discard(filesystem.FStab)
if manifest.provider.get('enhanced_networking', None) == 'simple':
taskset.update([kernel.AddDKMSPackages,
tasks.network.InstallEnhancedNetworking,
kernel.UpdateInitramfs])
taskset.update([filesystem.Format,
volume.Delete,
])
def resolve_rollback_tasks(taskset, manifest, completed, counter_task):
taskset.update(task_groups.get_standard_rollback_tasks(completed))
counter_task(taskset, tasks.ebs.Create, volume.Delete)
counter_task(taskset, tasks.ebs.Attach, volume.Detach)
counter_task(taskset, tasks.ami.BundleImage, tasks.ami.RemoveBundle)