320 lines
9.0 KiB
Python
320 lines
9.0 KiB
Python
import os
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import re
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import shutil
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import tempfile
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from subprocess import check_call, call, CalledProcessError
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# Stuff copied from cinder py charm, needs to go somewhere
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# common.
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from misc_utils import (
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ensure_block_device,
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clean_storage,
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)
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from swift_storage_context import (
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SwiftStorageContext,
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SwiftStorageServerContext,
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RsyncContext,
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)
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from charmhelpers.fetch import (
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apt_upgrade,
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apt_update
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)
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from charmhelpers.core.host import (
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mkdir,
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mount,
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service_restart,
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lsb_release
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)
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from charmhelpers.core.hookenv import (
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config,
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log,
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DEBUG,
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INFO,
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ERROR,
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unit_private_ip,
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)
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from charmhelpers.contrib.storage.linux.utils import (
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is_block_device,
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is_device_mounted,
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)
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from charmhelpers.contrib.openstack.utils import (
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configure_installation_source,
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get_os_codename_install_source,
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get_os_codename_package,
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save_script_rc as _save_script_rc,
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)
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from charmhelpers.contrib.openstack import (
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templating,
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context
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)
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from charmhelpers.core.decorators import (
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retry_on_exception,
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)
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PACKAGES = [
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'swift', 'swift-account', 'swift-container', 'swift-object',
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'xfsprogs', 'gdisk', 'lvm2', 'python-jinja2', 'python-psutil',
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]
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TEMPLATES = 'templates/'
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ACCOUNT_SVCS = [
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'swift-account', 'swift-account-auditor',
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'swift-account-reaper', 'swift-account-replicator'
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]
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CONTAINER_SVCS = [
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'swift-container', 'swift-container-auditor',
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'swift-container-updater', 'swift-container-replicator',
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'swift-container-sync'
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]
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OBJECT_SVCS = [
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'swift-object', 'swift-object-auditor',
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'swift-object-updater', 'swift-object-replicator'
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]
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SWIFT_SVCS = [
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'swift-account-auditor',
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'swift-account-reaper',
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'swift-account-replicator',
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'swift-account-server',
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'swift-container-auditor',
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'swift-container-replicator',
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'swift-container-server',
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'swift-container-sync',
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'swift-container-updater',
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'swift-object-auditor',
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'swift-object-replicator',
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'swift-object-server',
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'swift-object-updater',
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]
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RESTART_MAP = {
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'/etc/rsync-juju.d/050-swift-storage.conf': ['rsync'],
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'/etc/swift/account-server.conf': ACCOUNT_SVCS,
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'/etc/swift/container-server.conf': CONTAINER_SVCS,
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'/etc/swift/object-server.conf': OBJECT_SVCS,
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'/etc/swift/swift.conf': ACCOUNT_SVCS + CONTAINER_SVCS + OBJECT_SVCS
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}
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SWIFT_CONF_DIR = '/etc/swift'
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SWIFT_RING_EXT = 'ring.gz'
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def ensure_swift_directories():
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'''
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Ensure all directories required for a swift storage node exist with
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correct permissions.
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'''
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dirs = [
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SWIFT_CONF_DIR,
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'/var/cache/swift',
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'/srv/node',
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]
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[mkdir(d, owner='swift', group='swift') for d in dirs
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if not os.path.isdir(d)]
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def register_configs():
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release = get_os_codename_package('python-swift', fatal=False) or 'essex'
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configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
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openstack_release=release)
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configs.register('/etc/swift/swift.conf',
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[SwiftStorageContext()])
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configs.register('/etc/rsync-juju.d/050-swift-storage.conf',
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[RsyncContext(), SwiftStorageServerContext()])
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for server in ['account', 'object', 'container']:
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configs.register('/etc/swift/%s-server.conf' % server,
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[SwiftStorageServerContext(),
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context.BindHostContext()]),
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return configs
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def swift_init(target, action, fatal=False):
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'''
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Call swift-init on a specific target with given action, potentially
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raising exception.
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'''
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cmd = ['swift-init', target, action]
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if fatal:
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return check_call(cmd)
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return call(cmd)
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def do_openstack_upgrade(configs):
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new_src = config('openstack-origin')
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new_os_rel = get_os_codename_install_source(new_src)
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log('Performing OpenStack upgrade to %s.' % (new_os_rel))
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configure_installation_source(new_src)
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dpkg_opts = [
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'--option', 'Dpkg::Options::=--force-confnew',
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'--option', 'Dpkg::Options::=--force-confdef',
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]
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apt_update()
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apt_upgrade(options=dpkg_opts, fatal=True, dist=True)
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configs.set_release(openstack_release=new_os_rel)
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configs.write_all()
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[service_restart(svc) for svc in
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(ACCOUNT_SVCS + CONTAINER_SVCS + OBJECT_SVCS)]
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def _is_storage_ready(partition):
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"""
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A small helper to determine if a given device is suitabe to be used as
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a storage device.
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"""
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return is_block_device(partition) and not is_device_mounted(partition)
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def find_block_devices():
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found = []
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incl = ['sd[a-z]', 'vd[a-z]', 'cciss\/c[0-9]d[0-9]']
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with open('/proc/partitions') as proc:
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print proc
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partitions = [p.split() for p in proc.readlines()[2:]]
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for partition in [p[3] for p in partitions if p]:
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for inc in incl:
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_re = re.compile(r'^(%s)$' % inc)
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if _re.match(partition):
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found.append(os.path.join('/dev', partition))
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return [f for f in found if _is_storage_ready(f)]
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def determine_block_devices():
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block_device = config('block-device')
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if not block_device or block_device in ['None', 'none']:
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log('No storage devices specified in config as block-device',
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level=ERROR)
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return None
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if block_device == 'guess':
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bdevs = find_block_devices()
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else:
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bdevs = block_device.split(' ')
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# attempt to ensure block devices, but filter out missing devs
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_none = ['None', 'none', None]
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valid_bdevs = \
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[x for x in map(ensure_block_device, bdevs) if x not in _none]
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log('Valid ensured block devices: %s' % valid_bdevs)
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return valid_bdevs
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def mkfs_xfs(bdev):
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cmd = ['mkfs.xfs', '-f', '-i', 'size=1024', bdev]
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check_call(cmd)
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def setup_storage():
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for dev in determine_block_devices():
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if config('overwrite') in ['True', 'true']:
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clean_storage(dev)
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# if not cleaned and in use, mkfs should fail.
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mkfs_xfs(dev)
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_dev = os.path.basename(dev)
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_mp = os.path.join('/srv', 'node', _dev)
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mkdir(_mp, owner='swift', group='swift')
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mount(dev, '/srv/node/%s' % _dev, persist=True,
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filesystem="xfs")
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check_call(['chown', '-R', 'swift:swift', '/srv/node/'])
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check_call(['chmod', '-R', '0755', '/srv/node/'])
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@retry_on_exception(3, base_delay=2, exc_type=CalledProcessError)
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def fetch_swift_rings(rings_url):
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"""Fetch rings from leader proxy unit.
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Note that we support a number of retries if a fetch fails since we may
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have hit the very small update window on the proxy side.
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"""
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log('Fetching swift rings from proxy @ %s.' % rings_url, level=INFO)
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target = SWIFT_CONF_DIR
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tmpdir = tempfile.mkdtemp(prefix='swiftrings')
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try:
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synced = []
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for server in ['account', 'object', 'container']:
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url = '%s/%s.%s' % (rings_url, server, SWIFT_RING_EXT)
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log('Fetching %s.' % url, level=DEBUG)
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ring = '%s.%s' % (server, SWIFT_RING_EXT)
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cmd = ['wget', url, '--retry-connrefused', '-t', '10', '-O',
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os.path.join(tmpdir, ring)]
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check_call(cmd)
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synced.append(ring)
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# Once all have been successfully downloaded, move them to actual
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# location.
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for f in synced:
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os.rename(os.path.join(tmpdir, f), os.path.join(target, f))
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finally:
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shutil.rmtree(tmpdir)
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def save_script_rc():
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env_vars = {}
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ip = unit_private_ip()
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for server in ['account', 'container', 'object']:
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port = config('%s-server-port' % server)
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url = 'http://%s:%s/recon/diskusage|"mounted":true' % (ip, port)
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svc = server.upper()
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env_vars.update({
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'OPENSTACK_PORT_%s' % svc: port,
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'OPENSTACK_SWIFT_SERVICE_%s' % svc: '%s-server' % server,
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'OPENSTACK_URL_%s' % svc: url,
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})
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_save_script_rc(**env_vars)
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def assert_charm_supports_ipv6():
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"""Check whether we are able to support charms ipv6."""
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if lsb_release()['DISTRIB_CODENAME'].lower() < "trusty":
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raise Exception("IPv6 is not supported in the charms for Ubuntu "
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"versions less than Trusty 14.04")
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def concat_rsync_fragments():
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log('Concatenating rsyncd.d fragments')
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rsyncd_dir = '/etc/rsyncd.d'
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rsyncd_conf = ""
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for filename in sorted(os.listdir(rsyncd_dir)):
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with open(os.path.join(rsyncd_dir, filename), 'r') as fragment:
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rsyncd_conf += fragment.read()
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with open('/etc/rsyncd.conf', 'w') as f:
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f.write(rsyncd_conf)
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def setup_rsync():
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'''
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Ensure all directories required for rsync exist with correct permissions.
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'''
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root_dirs = [
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'/etc/rsync-juju.d',
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]
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[mkdir(d, owner='root', group='root') for d in root_dirs
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if not os.path.isdir(d)]
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rsyncd_base = """uid = nobody
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gid = nogroup
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pid file = /var/run/rsyncd.pid
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syslog facility = daemon
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socket options = SO_KEEPALIVE
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&include /etc/rsync-juju.d
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"""
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f = open('/etc/rsyncd.conf', 'w')
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f.write(rsyncd_base)
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f.close()
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