x/anvil
Code Issues Proposed changes
anvil/devstack/components/nova.py
Joshua Harlow 6e4382cb42 Made it so that the config uses a shared cache (which is shared with the password gen). 
Adjusted some naming to have slightly shorter variable names (pw_gen).
Removed need for section in password generator.
Adjusted passing of the renamed variable around and the other places pw_gen should be used.

Added helper class that can be used by both pw_gen and cfg to get ids and adjusted print out of the config to
now just print out the shared cache, which seems to make sense to me.
2012-03-12 21:03:08 -07:00

921 lines
36 KiB
Python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from urlparse import urlunparse
from devstack import cfg_helpers
from devstack import component as comp
from devstack import date
from devstack import exceptions
from devstack import libvirt as virsh
from devstack import log as logging
from devstack import settings
from devstack import shell as sh
from devstack import utils
from devstack.components import db
from devstack.components import keystone
#id
TYPE = settings.NOVA
LOG = logging.getLogger('devstack.components.nova')
#special generated conf
API_CONF = 'nova.conf'
#how we reference some config files (in applications)
CFG_FILE_OPT = '--config-file'
#normal conf
PASTE_CONF = 'nova-api-paste.ini'
PASTE_SOURCE_FN = 'api-paste.ini'
POLICY_CONF = 'policy.json'
LOGGING_SOURCE_FN = 'logging_sample.conf'
LOGGING_CONF = "logging.conf"
CONFIGS = [PASTE_CONF, POLICY_CONF, LOGGING_CONF]
ADJUST_CONFIGS = [PASTE_CONF]
#this is a special conf
NET_INIT_CONF = 'nova-network-init.sh'
NET_INIT_CMD_ROOT = [sh.joinpths("/", "bin", 'bash')]
#this db will be dropped then created
DB_NAME = 'nova'
#this makes the database be in sync with nova
DB_SYNC_CMD = [
{'cmd': ['%BINDIR%/nova-manage', CFG_FILE_OPT, '%CFGFILE%', 'db', 'sync']},
]
#these are used for nova volumens
VG_CHECK_CMD = [
{'cmd': ['vgs', '%VOLUME_GROUP%'],
'run_as_root': True}
]
VG_DEV_CMD = [
{'cmd': ['losetup', '-f', '--show', '%VOLUME_BACKING_FILE%'],
'run_as_root': True}
]
VG_CREATE_CMD = [
{'cmd': ['vgcreate', '%VOLUME_GROUP%', '%DEV%'],
'run_as_root': True}
]
VG_LVS_CMD = [
{'cmd': ['lvs', '--noheadings', '-o', 'lv_name', '%VOLUME_GROUP%'],
'run_as_root': True}
]
VG_LVREMOVE_CMD = [
{'cmd': ['lvremove', '-f', '%VOLUME_GROUP%/%LV%'],
'run_as_root': True}
]
RESTART_TGT_CMD = [
{'cmd': ['stop', 'tgt'], 'run_as_root': True},
{'cmd': ['start', 'tgt'], 'run_as_root': True}
]
# NCPU, NVOL, NAPI ... are here as possible subcomponents of nova
NCPU = "cpu"
NVOL = "vol"
NAPI = "api"
NOBJ = "obj"
NNET = "net"
NCERT = "cert"
NSCHED = "sched"
NCAUTH = "cauth"
NXVNC = "xvnc"
SUBCOMPONENTS = [NCPU, NVOL, NAPI,
NOBJ, NNET, NCERT, NSCHED, NCAUTH, NXVNC]
#the pkg json files nova requires for installation
REQ_PKGS = ['general.json', 'nova.json']
# Additional packages for subcomponents
ADD_PKGS = {
NAPI:
[
'n-api.json',
],
NCPU:
[
'n-cpu.json',
],
NVOL:
[
'n-vol.json',
],
}
# What to start
APP_OPTIONS = {
#these are currently the core components/applications
'nova-api': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-compute': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-volume': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-network': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-scheduler': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-cert': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-objectstore': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-consoleauth': [CFG_FILE_OPT, '%CFGFILE%'],
'nova-xvpvncproxy': [CFG_FILE_OPT, '%CFGFILE%'],
}
# Sub component names to actual app names (matching previous dict)
SUB_COMPONENT_NAME_MAP = {
NCPU: 'nova-compute',
NVOL: 'nova-volume',
NAPI: 'nova-api',
NOBJ: 'nova-objectstore',
NNET: 'nova-network',
NCERT: 'nova-cert',
NSCHED: 'nova-scheduler',
NCAUTH: 'nova-consoleauth',
NXVNC: 'nova-xvpvncproxy',
}
#subdirs of the checkout/download
BIN_DIR = 'bin'
CONFIG_DIR = "etc"
#network class/driver/manager templs
QUANTUM_MANAGER = 'nova.network.quantum.manager.QuantumManager'
QUANTUM_IPAM_LIB = 'nova.network.quantum.melange_ipam_lib'
NET_MANAGER_TEMPLATE = 'nova.network.manager.%s'
FIRE_MANAGER_TEMPLATE = 'nova.virt.libvirt.firewall.%s'
#sensible defaults
DEF_IMAGE_SERVICE = 'nova.image.glance.GlanceImageService'
DEF_SCHEDULER = 'nova.scheduler.simple.SimpleScheduler'
DEF_GLANCE_PORT = 9292
DEF_GLANCE_SERVER = "%s" + ":%s" % (DEF_GLANCE_PORT)
DEF_INSTANCE_PREFIX = 'instance-'
DEF_INSTANCE_TEMPL = DEF_INSTANCE_PREFIX + '%08x'
DEF_FIREWALL_DRIVER = 'IptablesFirewallDriver'
DEF_FLAT_VIRT_BRIDGE = 'br100'
DEF_NET_MANAGER = 'FlatDHCPManager'
DEF_VOL_PREFIX = 'volume-'
DEF_VOL_TEMPL = DEF_VOL_PREFIX + '%08x'
#default virt types
DEF_VIRT_DRIVER = 'libvirt'
DEF_VIRT_TYPE = 'qemu'
#virt drivers to there connection name
VIRT_DRIVER_CON_MAP = {
'libvirt': 'libvirt',
'xenserver': 'xenapi',
'vmware': 'vmwareapi',
'baremetal': 'baremetal',
}
#only turned on if vswitch enabled
QUANTUM_OPENSWITCH_OPS = {
'libvirt_vif_type': 'ethernet',
'libvirt_vif_driver': 'nova.virt.libvirt.vif.LibvirtOpenVswitchDriver',
'linuxnet_interface_driver': 'nova.network.linux_net.LinuxOVSInterfaceDriver',
'quantum_use_dhcp': True,
}
#this is a special conf
CLEANER_DATA_CONF = 'nova-clean.sh'
CLEANER_CMD_ROOT = [sh.joinpths("/", "bin", 'bash')]
#rhel6/fedora libvirt policy
#http://wiki.libvirt.org/page/SSHPolicyKitSetup
LIBVIRT_POLICY_FN = "/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla"
LIBVIRT_POLICY_CONTENTS = """
[libvirt Management Access]
Identity=unix-group:libvirtd
Action=org.libvirt.unix.manage
ResultAny=yes
ResultInactive=yes
ResultActive=yes
"""
POLICY_DISTROS = [settings.RHEL6, settings.FEDORA16]
#xenserver specific defaults
XS_DEF_INTERFACE = 'eth1'
XA_CONNECTION_ADDR = '169.254.0.1'
XS_VNC_ADDR = XA_CONNECTION_ADDR
XS_DEF_BRIDGE = 'xapi1'
XA_CONNECTION_PORT = 80
XA_DEF_USER = 'root'
XA_DEF_CONNECTION_URL = urlunparse(('http', "%s:%s" % (XA_CONNECTION_ADDR, XA_CONNECTION_PORT), "", '', '', ''))
#vnc specific defaults
VNC_DEF_ADDR = '127.0.0.1'
#std compute extensions
STD_COMPUTE_EXTS = 'nova.api.openstack.compute.contrib.standard_extensions'
#pip files that nova requires
REQ_PIPS = ['general.json', 'nova.json']
#config keys we warm up so u won't be prompted later
WARMUP_PWS = ['rabbit']
#used to wait until started before we can run the data setup script
WAIT_ONLINE_TO = settings.WAIT_ALIVE_SECS
#nova conf default section
NV_CONF_DEF_SECTION = "[DEFAULT]"
def _canon_virt_driver(virt_driver):
if not virt_driver:
return DEF_VIRT_DRIVER
virt_driver = virt_driver.strip().lower()
if not (virt_driver in VIRT_DRIVER_CON_MAP):
return DEF_VIRT_DRIVER
return virt_driver
def _canon_libvirt_type(virt_type):
if not virt_type:
return DEF_VIRT_TYPE
virt_type = virt_type.lower().strip()
if not (virt_type in virsh.LIBVIRT_PROTOCOL_MAP):
return DEF_VIRT_TYPE
else:
return virt_type
class NovaUninstaller(comp.PythonUninstallComponent):
def __init__(self, *args, **kargs):
comp.PythonUninstallComponent.__init__(self, TYPE, *args, **kargs)
self.bindir = sh.joinpths(self.appdir, BIN_DIR)
self.cfgdir = sh.joinpths(self.appdir, CONFIG_DIR)
def pre_uninstall(self):
self._clear_libvirt_domains()
self._clean_it()
def _clean_it(self):
#these environment additions are important
#in that they eventually affect how this script runs
sub_components = self.component_opts or SUBCOMPONENTS
env = dict()
env['ENABLED_SERVICES'] = ",".join(sub_components)
env['BIN_DIR'] = self.bindir
env['VOLUME_NAME_PREFIX'] = self.cfg.getdefaulted('nova', 'volume_name_prefix', DEF_VOL_PREFIX)
cleaner_fn = sh.joinpths(self.bindir, CLEANER_DATA_CONF)
if sh.isfile(cleaner_fn):
LOG.info("Cleaning up your system by running nova cleaner script [%s]." % (cleaner_fn))
cmd = CLEANER_CMD_ROOT + [cleaner_fn]
sh.execute(*cmd, run_as_root=True, env_overrides=env)
def _clear_libvirt_domains(self):
virt_driver = _canon_virt_driver(self.cfg.get('nova', 'virt_driver'))
if virt_driver == 'libvirt':
inst_prefix = self.cfg.getdefaulted('nova', 'instance_name_prefix', DEF_INSTANCE_PREFIX)
libvirt_type = _canon_libvirt_type(self.cfg.get('nova', 'libvirt_type'))
virsh.clear_libvirt_domains(self.distro, libvirt_type, inst_prefix)
class NovaInstaller(comp.PythonInstallComponent):
def __init__(self, *args, **kargs):
comp.PythonInstallComponent.__init__(self, TYPE, *args, **kargs)
self.bindir = sh.joinpths(self.appdir, BIN_DIR)
self.cfgdir = sh.joinpths(self.appdir, CONFIG_DIR)
self.paste_conf_fn = self._get_target_config_name(PASTE_CONF)
self.volumes_enabled = False
if not self.component_opts or NVOL in self.component_opts:
self.volumes_enabled = True
self.xvnc_enabled = False
if not self.component_opts or NXVNC in self.component_opts:
self.xvnc_enabled = True
def _get_pkgs(self):
pkgs = list(REQ_PKGS)
sub_components = self.component_opts or SUBCOMPONENTS
for c in sub_components:
fns = ADD_PKGS.get(c, [])
pkgs.extend(fns)
return pkgs
def _get_symlinks(self):
links = comp.PythonInstallComponent._get_symlinks(self)
source_fn = sh.joinpths(self.cfgdir, API_CONF)
links[source_fn] = sh.joinpths(self._get_link_dir(), API_CONF)
return links
def _get_pips(self):
return list(REQ_PIPS)
def _get_download_locations(self):
places = list()
places.append({
'uri': ("git", "nova_repo"),
'branch': ("git", "nova_branch"),
})
return places
def warm_configs(self):
for pw_key in WARMUP_PWS:
self.cfg.get("passwords", pw_key)
driver_canon = _canon_virt_driver(self.cfg.get('nova', 'virt_driver'))
if driver_canon == 'xenserver':
self.cfg.get("passwords", "xenapi_connection")
def _get_config_files(self):
return list(CONFIGS)
def _setup_network_initer(self):
LOG.info("Configuring nova network initializer template %s.", NET_INIT_CONF)
(_, contents) = utils.load_template(self.component_name, NET_INIT_CONF)
params = self._get_param_map(NET_INIT_CONF)
contents = utils.param_replace(contents, params, True)
tgt_fn = sh.joinpths(self.bindir, NET_INIT_CONF)
sh.write_file(tgt_fn, contents)
sh.chmod(tgt_fn, 0755)
self.tracewriter.file_touched(tgt_fn)
def _sync_db(self):
LOG.info("Syncing the database with nova.")
mp = dict()
mp['BINDIR'] = self.bindir
mp['CFGFILE'] = sh.joinpths(self.cfgdir, API_CONF)
utils.execute_template(*DB_SYNC_CMD, params=mp)
def post_install(self):
comp.PythonInstallComponent.post_install(self)
#extra actions to do nova setup
self._setup_db()
self._sync_db()
self._setup_cleaner()
self._setup_network_initer()
#check if we need to do the vol subcomponent
if self.volumes_enabled:
vol_maker = NovaVolumeConfigurator(self)
vol_maker.setup_volumes()
def _setup_cleaner(self):
LOG.info("Configuring cleaner template %s.", CLEANER_DATA_CONF)
(_, contents) = utils.load_template(self.component_name, CLEANER_DATA_CONF)
tgt_fn = sh.joinpths(self.bindir, CLEANER_DATA_CONF)
sh.write_file(tgt_fn, contents)
sh.chmod(tgt_fn, 0755)
self.tracewriter.file_touched(tgt_fn)
def _setup_db(self):
LOG.info("Fixing up database named %s.", DB_NAME)
db.drop_db(self.cfg, self.pw_gen, DB_NAME)
db.create_db(self.cfg, self.pw_gen, DB_NAME)
def _generate_nova_conf(self):
LOG.info("Generating dynamic content for nova configuration (%s)." % (API_CONF))
conf_gen = NovaConfConfigurator(self)
nova_conf_contents = conf_gen.configure()
conf_fn = self._get_target_config_name(API_CONF)
LOG.info("Writing nova configuration to %s" % (conf_fn))
LOG.debug(nova_conf_contents)
self.tracewriter.dirs_made(*sh.mkdirslist(sh.dirname(conf_fn)))
self.tracewriter.cfg_file_written(sh.write_file(conf_fn, nova_conf_contents))
def _get_source_config(self, config_fn):
name = config_fn
if config_fn == PASTE_CONF:
# Return the paste api template
return comp.PythonInstallComponent._get_source_config(self, PASTE_SOURCE_FN)
elif config_fn == LOGGING_CONF:
name = LOGGING_SOURCE_FN
srcfn = sh.joinpths(self.cfgdir, "nova", name)
contents = sh.load_file(srcfn)
return (srcfn, contents)
def _get_param_map(self, config_fn):
mp = dict()
if config_fn == NET_INIT_CONF:
mp['NOVA_DIR'] = self.appdir
mp['CFG_FILE'] = sh.joinpths(self.cfgdir, API_CONF)
mp['FLOATING_RANGE'] = self.cfg.getdefaulted('nova', 'floating_range', '172.24.4.224/28')
mp['TEST_FLOATING_RANGE'] = self.cfg.getdefaulted('nova', 'test_floating_range', '192.168.253.0/29')
mp['TEST_FLOATING_POOL'] = self.cfg.getdefaulted('nova', 'test_floating_pool', 'test')
mp['FIXED_NETWORK_SIZE'] = self.cfg.getdefaulted('nova', 'fixed_network_size', '256')
mp['FIXED_RANGE'] = self.cfg.getdefaulted('nova', 'fixed_range', '10.0.0.0/24')
else:
mp.update(keystone.get_shared_params(self.cfg, self.pw_gen, 'nova'))
return mp
def configure(self):
configs_made = comp.PythonInstallComponent.configure(self)
self._generate_nova_conf()
configs_made += 1
# TODO: maybe this should be a subclass that handles these differences
driver_canon = _canon_virt_driver(self.cfg.get('nova', 'virt_driver'))
if (self.distro in POLICY_DISTROS) and driver_canon == 'libvirt':
dirs_made = list()
with sh.Rooted(True):
dirs_made = sh.mkdirslist(sh.dirname(LIBVIRT_POLICY_FN))
sh.write_file(LIBVIRT_POLICY_FN, LIBVIRT_POLICY_CONTENTS)
self.tracewriter.dirs_made(*dirs_made)
self.tracewriter.cfg_file_written(LIBVIRT_POLICY_FN)
configs_made += 1
return configs_made
class NovaRuntime(comp.PythonRuntime):
def __init__(self, *args, **kargs):
comp.PythonRuntime.__init__(self, TYPE, *args, **kargs)
self.cfgdir = sh.joinpths(self.appdir, CONFIG_DIR)
self.bindir = sh.joinpths(self.appdir, BIN_DIR)
def _setup_network_init(self):
tgt_fn = sh.joinpths(self.bindir, NET_INIT_CONF)
if sh.isfile(tgt_fn):
LOG.info("Creating your nova network to be used with instances.")
#still there, run it
#these environment additions are important
#in that they eventually affect how this script runs
if utils.service_enabled(settings.QUANTUM, self.instances, False):
LOG.info("Waiting %s seconds so that quantum can start up before running first time init." % (WAIT_ONLINE_TO))
sh.sleep(WAIT_ONLINE_TO)
env = dict()
env['ENABLED_SERVICES'] = ",".join(self.instances.keys())
setup_cmd = NET_INIT_CMD_ROOT + [tgt_fn]
LOG.info("Running (%s) command to initialize nova's network." % (" ".join(setup_cmd)))
sh.execute(*setup_cmd, env_overrides=env, run_as_root=False)
LOG.debug("Removing (%s) file since we successfully initialized nova's network." % (tgt_fn))
sh.unlink(tgt_fn)
def post_start(self):
self._setup_network_init()
def get_dependencies(self):
deps = comp.PythonRuntime.get_dependencies(self)
if utils.service_enabled(settings.QUANTUM, self.instances, False):
deps.append(settings.QUANTUM)
return deps
def _get_apps_to_start(self):
result = list()
if not self.component_opts:
apps = sorted(APP_OPTIONS.keys())
for app_name in apps:
result.append({
'name': app_name,
'path': sh.joinpths(self.bindir, app_name),
})
else:
for short_name in self.component_opts:
full_name = SUB_COMPONENT_NAME_MAP.get(short_name)
if full_name and full_name in APP_OPTIONS:
result.append({
'name': full_name,
'path': sh.joinpths(self.bindir, full_name),
})
return result
def pre_start(self):
# Let the parent class do its thing
comp.PythonRuntime.pre_start(self)
virt_driver = _canon_virt_driver(self.cfg.get('nova', 'virt_driver'))
if virt_driver == 'libvirt':
virt_type = _canon_libvirt_type(self.cfg.get('nova', 'libvirt_type'))
LOG.info("Checking that your selected libvirt virtualization type [%s] is working and running." % (virt_type))
if not virsh.virt_ok(virt_type, self.distro):
msg = ("Libvirt type %s for distro %s does not seem to be active or configured correctly, "
"perhaps you should be using %s instead." % (virt_type, self.distro, DEF_VIRT_TYPE))
raise exceptions.StartException(msg)
virsh.restart(self.distro)
def _get_param_map(self, app_name):
params = comp.PythonRuntime._get_param_map(self, app_name)
params['CFGFILE'] = sh.joinpths(self.cfgdir, API_CONF)
return params
def _get_app_options(self, app):
return APP_OPTIONS.get(app)
#this will configure nova volumes which in a developer box
#is a volume group (lvm) that are backed by a loopback file
class NovaVolumeConfigurator(object):
def __init__(self, ni):
self.cfg = ni.cfg
self.appdir = ni.appdir
def setup_volumes(self):
self._setup_vol_groups()
def _setup_vol_groups(self):
LOG.info("Attempting to setup volume groups for nova volume management.")
mp = dict()
backing_file = self.cfg.getdefaulted('nova', 'volume_backing_file', sh.joinpths(self.appdir, 'nova-volumes-backing-file'))
vol_group = self.cfg.getdefaulted('nova', 'volume_group', 'nova-volumes')
backing_file_size = utils.to_bytes(self.cfg.getdefaulted('nova', 'volume_backing_file_size', '2052M'))
mp['VOLUME_GROUP'] = vol_group
mp['VOLUME_BACKING_FILE'] = backing_file
mp['VOLUME_BACKING_FILE_SIZE'] = backing_file_size
try:
utils.execute_template(*VG_CHECK_CMD, params=mp)
LOG.warn("Volume group already exists: %s" % (vol_group))
except exceptions.ProcessExecutionError as err:
# Check that the error from VG_CHECK is an expected error
if err.exit_code != 5:
raise
LOG.info("Need to create volume group: %s" % (vol_group))
sh.touch_file(backing_file, die_if_there=False, file_size=backing_file_size)
vg_dev_result = utils.execute_template(*VG_DEV_CMD, params=mp)
if vg_dev_result and vg_dev_result[0]:
LOG.debug("VG dev result: %s" % (vg_dev_result))
# Strip the newlines out of the stdout (which is in the first
# element of the first (and only) tuple in the response
(sysout, _) = vg_dev_result[0]
mp['DEV'] = sysout.replace('\n', '')
utils.execute_template(*VG_CREATE_CMD, params=mp)
# One way or another, we should have the volume group, Now check the
# logical volumes
self._process_lvs(mp)
# Finish off by restarting tgt, and ignore any errors
utils.execute_template(*RESTART_TGT_CMD, check_exit_code=False)
def _process_lvs(self, mp):
LOG.info("Attempting to setup logical volumes for nova volume management.")
lvs_result = utils.execute_template(*VG_LVS_CMD, params=mp)
if lvs_result and lvs_result[0]:
LOG.debug("LVS result: %s" % (lvs_result))
vol_name_prefix = self.cfg.getdefaulted('nova', 'volume_name_prefix', DEF_VOL_PREFIX)
LOG.debug("Using volume name prefix: %s" % (vol_name_prefix))
(sysout, _) = lvs_result[0]
for stdout_line in sysout.split('\n'):
stdout_line = stdout_line.strip()
if stdout_line:
# Ignore blank lines
LOG.debug("Processing LVS output line: %s" % (stdout_line))
if stdout_line.startswith(vol_name_prefix):
# TODO still need to implement the following:
# tid=`egrep "^tid.+$lv" /proc/net/iet/volume | cut -f1 -d' ' | tr ':' '='`
# if [[ -n "$tid" ]]; then
# lun=`egrep "lun.+$lv" /proc/net/iet/volume | cut -f1 -d' ' | tr ':' '=' | tr -d '\t'`
# sudo ietadm --op delete --$tid --$lun
# fi
# sudo lvremove -f $VOLUME_GROUP/$lv
raise NotImplementedError("LVS magic not yet implemented!")
mp['LV'] = stdout_line
utils.execute_template(*VG_LVREMOVE_CMD, params=mp)
# This class has the smarts to build the configuration file based on
# various runtime values. A useful reference for figuring out this
# is at http://docs.openstack.org/diablo/openstack-compute/admin/content/ch_configuring-openstack-compute.html
class NovaConfConfigurator(object):
def __init__(self, ni):
self.cfg = ni.cfg
self.pw_gen = ni.pw_gen
self.instances = ni.instances
self.component_root = ni.component_root
self.appdir = ni.appdir
self.tracewriter = ni.tracewriter
self.paste_conf_fn = ni.paste_conf_fn
self.distro = ni.distro
self.cfgdir = ni.cfgdir
self.xvnc_enabled = ni.xvnc_enabled
self.volumes_enabled = ni.volumes_enabled
self.novnc_enabled = utils.service_enabled(settings.NOVNC, self.instances)
def _getbool(self, name):
return self.cfg.getboolean('nova', name)
def _getstr(self, name, default=''):
return self.cfg.getdefaulted('nova', name, default)
def configure(self):
#everything built goes in here
nova_conf = NovaConf()
#used more than once
hostip = self.cfg.get('host', 'ip')
#verbose on?
if self._getbool('verbose'):
nova_conf.add('verbose', True)
# Check if we have a logdir specified. If we do, we'll make
# sure that it exists. We will *not* use tracewrite because we
# don't want to lose the logs when we uninstall
logdir = self._getstr('logdir')
if logdir:
full_logdir = sh.abspth(logdir)
nova_conf.add('logdir', full_logdir)
# Will need to be root to create it since it may be in /var/log
if not sh.isdir(full_logdir):
LOG.debug("Making sure that nova logdir exists at: %s" % full_logdir)
with sh.Rooted(True):
sh.mkdir(full_logdir)
sh.chmod(full_logdir, 0777)
#allow the admin api?
if self._getbool('allow_admin_api'):
nova_conf.add('allow_admin_api', True)
#??
nova_conf.add('allow_resize_to_same_host', True)
#which scheduler do u want?
nova_conf.add('compute_scheduler_driver', self._getstr('scheduler', DEF_SCHEDULER))
#setup network settings
self._configure_network_settings(nova_conf)
#setup nova volume settings
if self.volumes_enabled:
self._configure_vols(nova_conf)
#where we are running
nova_conf.add('my_ip', hostip)
#setup your sql connection
db_dsn = cfg_helpers.fetch_dbdsn(self.cfg, self.pw_gen, DB_NAME)
nova_conf.add('sql_connection', db_dsn)
#configure anything libvirt releated?
virt_driver = _canon_virt_driver(self._getstr('virt_driver'))
if virt_driver == 'libvirt':
libvirt_type = _canon_libvirt_type(self._getstr('libvirt_type'))
self._configure_libvirt(libvirt_type, nova_conf)
#how instances will be presented
instance_template = self._getstr('instance_name_prefix') + self._getstr('instance_name_postfix')
if not instance_template:
instance_template = DEF_INSTANCE_TEMPL
nova_conf.add('instance_name_template', instance_template)
#enable the standard extensions
nova_conf.add('osapi_compute_extension', STD_COMPUTE_EXTS)
#auth will be using keystone
nova_conf.add('auth_strategy', 'keystone')
#vnc settings setup
self._configure_vnc(nova_conf)
#where our paste config is
nova_conf.add('api_paste_config', self.paste_conf_fn)
#what our imaging service will be
self._configure_image_service(nova_conf, hostip)
#ec2 / s3 stuff
nova_conf.add('ec2_dmz_host', self._getstr('ec2_dmz_host', hostip))
nova_conf.add('s3_host', hostip)
#how is your rabbit setup?
nova_conf.add('rabbit_host', self.cfg.getdefaulted('default', 'rabbit_host', hostip))
nova_conf.add('rabbit_password', self.cfg.get("passwords", "rabbit"))
#where instances will be stored
instances_path = self._getstr('instances_path', sh.joinpths(self.component_root, 'instances'))
self._configure_instances_path(instances_path, nova_conf)
#is this a multihost setup?
self._configure_multihost(nova_conf)
#enable syslog??
self._configure_syslog(nova_conf)
#handle any virt driver specifics
self._configure_virt_driver(nova_conf)
#and extract to finish
return self._get_content(nova_conf)
def _get_extra(self, key):
extras = self._getstr(key)
cleaned_lines = list()
extra_lines = extras.splitlines()
for line in extra_lines:
cleaned_line = line.strip()
if len(cleaned_line):
cleaned_lines.append(cleaned_line)
return cleaned_lines
def _convert_extra_flags(self, extra_flags):
converted_flags = list()
for f in extra_flags:
cleaned_opt = f.lstrip("-")
if len(cleaned_opt) == 0:
continue
if cleaned_opt.find("=") == -1:
cleaned_opt += "=%s" % (True)
converted_flags.append(cleaned_opt)
return converted_flags
def _get_content(self, nova_conf):
generated_content = nova_conf.generate()
extra_flags = self._get_extra('extra_flags')
if extra_flags:
LOG.warning("EXTRA_FLAGS is defined and may need to be converted to EXTRA_OPTS!")
extra_flags = self._convert_extra_flags(extra_flags)
extra_opts = self._get_extra('extra_opts')
if extra_flags or extra_opts:
new_contents = list()
new_contents.append(generated_content)
new_contents.append("")
new_contents.append("# Extra flags")
new_contents.append("")
new_contents.extend(extra_flags)
new_contents.append("")
new_contents.append("# Extra options")
new_contents.append("")
new_contents.extend(extra_opts)
new_contents.append("")
generated_content = utils.joinlinesep(*new_contents)
return generated_content
def _configure_image_service(self, nova_conf, hostip):
#what image service we will use
img_service = self._getstr('img_service', DEF_IMAGE_SERVICE)
nova_conf.add('image_service', img_service)
#where is glance located?
if img_service.lower().find("glance") != -1:
glance_api_server = self._getstr('glance_server', (DEF_GLANCE_SERVER % (hostip)))
nova_conf.add('glance_api_servers', glance_api_server)
def _configure_vnc(self, nova_conf):
if self.novnc_enabled:
nova_conf.add('novncproxy_base_url', self._getstr('vncproxy_url'))
if self.xvnc_enabled:
nova_conf.add('xvpvncproxy_base_url', self._getstr('xvpvncproxy_url'))
nova_conf.add('vncserver_listen', self._getstr('vncserver_listen', VNC_DEF_ADDR))
# If no vnc proxy address was specified,
# pick a default based on which
# driver we're using.
vncserver_proxyclient_address = self._getstr('vncserver_proxyclient_address')
if not vncserver_proxyclient_address:
drive_canon = _canon_virt_driver(self._getstr('virt_driver'))
if drive_canon == 'xenserver':
vncserver_proxyclient_address = XS_VNC_ADDR
else:
vncserver_proxyclient_address = VNC_DEF_ADDR
nova_conf.add('vncserver_proxyclient_address', vncserver_proxyclient_address)
def _configure_vols(self, nova_conf):
nova_conf.add('volume_group', self._getstr('volume_group'))
vol_name_tpl = self._getstr('volume_name_prefix') + self._getstr('volume_name_postfix')
if not vol_name_tpl:
vol_name_tpl = DEF_VOL_TEMPL
nova_conf.add('volume_name_template', vol_name_tpl)
nova_conf.add('iscsi_helper', 'tgtadm')
def _configure_network_settings(self, nova_conf):
#TODO this might not be right....
if utils.service_enabled(settings.QUANTUM, self.instances, False):
nova_conf.add('network_manager', QUANTUM_MANAGER)
hostip = self.cfg.get('host', 'ip')
nova_conf.add('quantum_connection_host', self.cfg.getdefaulted('quantum', 'q_host', hostip))
nova_conf.add('quantum_connection_port', self.cfg.getdefaulted('quantum', 'q_port', '9696'))
if self.cfg.get('quantum', 'q_plugin') == 'openvswitch':
for (key, value) in QUANTUM_OPENSWITCH_OPS.items():
nova_conf.add(key, value)
if utils.service_enabled(settings.MELANGE_CLIENT, self.instances, False):
nova_conf.add('quantum_ipam_lib', QUANTUM_IPAM_LIB)
nova_conf.add('use_melange_mac_generation', True)
nova_conf.add('melange_host', self.cfg.getdefaulted('melange', 'm_host', hostip))
nova_conf.add('melange_port', self.cfg.getdefaulted('melange', 'm_port', '9898'))
else:
nova_conf.add('network_manager', NET_MANAGER_TEMPLATE % (self._getstr('network_manager', DEF_NET_MANAGER)))
#dhcp bridge stuff???
nova_conf.add('dhcpbridge_flagfile', sh.joinpths(self.cfgdir, API_CONF))
#Network prefix for the IP network that all the projects for future VM guests reside on. Example: 192.168.0.0/12
nova_conf.add('fixed_range', self._getstr('fixed_range'))
# The value for vlan_interface may default to the the current value
# of public_interface. We'll grab the value and keep it handy.
public_interface = self._getstr('public_interface')
vlan_interface = self._getstr('vlan_interface', public_interface)
#do a little check to make sure actually have that interface set...
if not utils.is_interface(public_interface):
msg = "Public interface %s is not a known interface" % (public_interface)
raise exceptions.ConfigException(msg)
if not utils.is_interface(vlan_interface):
msg = "VLAN interface %s is not a known interface" % (vlan_interface)
raise exceptions.ConfigException(msg)
nova_conf.add('public_interface', public_interface)
nova_conf.add('vlan_interface', vlan_interface)
#This forces dnsmasq to update its leases table when an instance is terminated.
nova_conf.add('force_dhcp_release', True)
def _configure_syslog(self, nova_conf):
if self.cfg.getboolean('default', 'syslog'):
nova_conf.add('use_syslog', True)
def _configure_multihost(self, nova_conf):
if self._getbool('multi_host'):
nova_conf.add('multi_host', True)
nova_conf.add('send_arp_for_ha', True)
def _configure_instances_path(self, instances_path, nova_conf):
nova_conf.add('instances_path', instances_path)
LOG.debug("Attempting to create instance directory: %s" % (instances_path))
self.tracewriter.dirs_made(*sh.mkdirslist(instances_path))
LOG.debug("Adjusting permissions of instance directory: %s" % (instances_path))
sh.chmod(instances_path, 0777)
def _configure_libvirt(self, virt_type, nova_conf):
if virt_type == 'lxc':
#TODO need to add some goodies here
pass
nova_conf.add('libvirt_type', virt_type)
#configures any virt driver settings
def _configure_virt_driver(self, nova_conf):
drive_canon = _canon_virt_driver(self._getstr('virt_driver'))
nova_conf.add('connection_type', VIRT_DRIVER_CON_MAP.get(drive_canon, drive_canon))
#special driver settings
if drive_canon == 'xenserver':
nova_conf.add('xenapi_connection_url', self._getstr('xa_connection_url', XA_DEF_CONNECTION_URL))
nova_conf.add('xenapi_connection_username', self._getstr('xa_connection_username', XA_DEF_USER))
nova_conf.add('xenapi_connection_password', self.cfg.get("passwords", "xenapi_connection"))
nova_conf.add('noflat_injected', True)
xs_flat_ifc = self._getstr('xs_flat_interface', XS_DEF_INTERFACE)
if not utils.is_interface(xs_flat_ifc):
msg = "Xenserver flat interface %s is not a known interface" % (xs_flat_ifc)
raise exceptions.ConfigException(msg)
nova_conf.add('flat_interface', xs_flat_ifc)
nova_conf.add('firewall_driver', FIRE_MANAGER_TEMPLATE % (self._getstr('xs_firewall_driver', DEF_FIREWALL_DRIVER)))
nova_conf.add('flat_network_bridge', self._getstr('xs_flat_network_bridge', XS_DEF_BRIDGE))
elif drive_canon == 'libvirt':
nova_conf.add('firewall_driver', FIRE_MANAGER_TEMPLATE % (self._getstr('libvirt_firewall_driver', DEF_FIREWALL_DRIVER)))
nova_conf.add('flat_network_bridge', self._getstr('flat_network_bridge', DEF_FLAT_VIRT_BRIDGE))
flat_interface = self._getstr('flat_interface')
if flat_interface:
if not utils.is_interface(flat_interface):
msg = "Libvirt flat interface %s is not a known interface" % (flat_interface)
raise exceptions.ConfigException(msg)
nova_conf.add('flat_interface', flat_interface)
# This class represents the data in the nova config file
class NovaConf(object):
def __init__(self):
self.lines = list()
def add(self, key, value, *values):
if not key:
raise exceptions.BadParamException("Can not add a empty/none/false key")
real_key = str(key)
real_value = ""
if len(values):
str_values = [str(value)] + [str(v) for v in values]
real_value = ",".join(str_values)
else:
real_value = str(value)
self.lines.append({'key': real_key, 'value': real_value})
LOG.debug("Added nova conf key %s with value [%s]" % (real_key, real_value))
def _form_entry(self, key, value, params=None):
real_value = utils.param_replace(str(value), params)
entry = "%s=%s" % (key, real_value)
return entry
def _generate_header(self):
lines = list()
lines.append("# Generated on %s by (%s)" % (date.rcf8222date(), sh.getuser()))
lines.append("")
lines.append(NV_CONF_DEF_SECTION)
lines.append("")
return lines
def _generate_footer(self):
return list()
def generate(self, param_dict=None):
lines = list()
lines.extend(self._generate_header())
lines.extend(sorted(self._generate_lines(param_dict)))
lines.extend(self._generate_footer())
return utils.joinlinesep(*lines)
def _generate_lines(self, params=None):
lines = list()
for line_entry in self.lines:
key = line_entry.get('key')
value = line_entry.get('value')
lines.append(self._form_entry(key, value, params))
return lines
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