# 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. import os import weakref from urlparse import urlunparse from devstack import component as comp from devstack import date from devstack import exceptions from devstack import libvirt as lv from devstack import log as logging from devstack import shell as sh from devstack import utils from devstack.components import db from devstack.components import keystone from devstack.components import rabbit 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': ['%BIN_DIR%/nova-manage', CFG_FILE_OPT, '%CFG_FILE%', 'db', 'sync']}, ] # These are used for nova volumes 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} ] # NCPU, NVOL, NAPI ... are here as possible subsystems of nova NCPU = "cpu" NVOL = "vol" NAPI = "api" NOBJ = "obj" NNET = "net" NCERT = "cert" NSCHED = "sched" NCAUTH = "cauth" NXVNC = "xvnc" SUBSYSTEMS = [NCPU, NVOL, NAPI, NOBJ, NNET, NCERT, NSCHED, NCAUTH, NXVNC] # What to start APP_OPTIONS = { #these are currently the core components/applications 'nova-api': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-compute': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-volume': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-network': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-scheduler': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-cert': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-objectstore': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-consoleauth': [CFG_FILE_OPT, '%CFG_FILE%'], 'nova-xvpvncproxy': [CFG_FILE_OPT, '%CFG_FILE%'], } # 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' # 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' # Virt drivers map -> to there connection name VIRT_DRIVER_CON_MAP = { 'libvirt': 'libvirt', 'xenserver': 'xenapi', 'vmware': 'vmwareapi', 'baremetal': 'baremetal', } # Only turned on if openvswitch 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')] # 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' # Nova std compute extensions STD_COMPUTE_EXTS = 'nova.api.openstack.compute.contrib.standard_extensions' # Config keys we warm up so u won't be prompted later WARMUP_PWS = [('rabbit', rabbit.PW_USER_PROMPT)] # 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 class NovaMixin(object): def known_options(self): return set(['no-vnc', 'quantum', 'melange']) def known_subsystems(self): return list(SUBSYSTEMS) def _get_config_files(self): return list(CONFIGS) def _get_download_locations(self): places = list() places.append({ 'uri': ("git", "nova_repo"), 'branch': ("git", "nova_branch"), }) return places class NovaUninstaller(NovaMixin, comp.PythonUninstallComponent): def __init__(self, *args, **kargs): comp.PythonUninstallComponent.__init__(self, *args, **kargs) self.bin_dir = sh.joinpths(self.app_dir, BIN_DIR) self.virsh = lv.Virsh(self.cfg, self.distro) 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 env = dict() env['ENABLED_SERVICES'] = ",".join(self.desired_subsystems) env['BIN_DIR'] = self.bin_dir env['VOLUME_NAME_PREFIX'] = self.cfg.getdefaulted('nova', 'volume_name_prefix', DEF_VOL_PREFIX) cleaner_fn = sh.joinpths(self.bin_dir, CLEANER_DATA_CONF) if sh.isfile(cleaner_fn): LOG.info("Cleaning up your system by running nova cleaner script %r" % (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 = lv.canon_libvirt_type(self.cfg.get('nova', 'libvirt_type')) self.virsh.clear_domains(libvirt_type, inst_prefix) class NovaInstaller(NovaMixin, comp.PythonInstallComponent): def __init__(self, *args, **kargs): comp.PythonInstallComponent.__init__(self, *args, **kargs) self.bin_dir = sh.joinpths(self.app_dir, BIN_DIR) self.paste_conf_fn = self._get_target_config_name(PASTE_CONF) self.volumes_enabled = False self.volume_configurator = None self.volumes_enabled = NVOL in self.desired_subsystems self.xvnc_enabled = NXVNC in self.desired_subsystems self.volume_maker = None if self.volumes_enabled: self.volume_maker = NovaVolumeConfigurator(self) self.conf_maker = NovaConfConfigurator(self) def _get_symlinks(self): links = comp.PythonInstallComponent._get_symlinks(self) source_fn = sh.joinpths(self.cfg_dir, API_CONF) links[source_fn] = sh.joinpths(self._get_link_dir(), API_CONF) return links def verify(self): comp.PythonInstallComponent.verify(self) self.conf_maker.verify() if self.volume_maker: self.volume_maker.verify() def warm_configs(self): warm_pws = list(WARMUP_PWS) driver_canon = canon_virt_driver(self.cfg.get('nova', 'virt_driver')) if driver_canon == 'xenserver': warm_pws.append(('xenapi_connection', 'the Xen API connection')) for pw_key, pw_prompt in warm_pws: self.pw_gen.get_password(pw_key, pw_prompt) def _setup_network_initer(self): LOG.info("Configuring nova network initializer template %r", 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) # FIXME, stop placing in checkout dir... tgt_fn = sh.joinpths(self.bin_dir, 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 nova to database named %r", DB_NAME) mp = self._get_param_map(None) 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 subsystem if self.volume_maker: self.volume_maker.setup_volumes() def _setup_cleaner(self): LOG.info("Configuring cleaner template %r", CLEANER_DATA_CONF) (_, contents) = utils.load_template(self.component_name, CLEANER_DATA_CONF) # FIXME, stop placing in checkout dir... tgt_fn = sh.joinpths(self.bin_dir, 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 %r", DB_NAME) db.drop_db(self.cfg, self.pw_gen, self.distro, DB_NAME) db.create_db(self.cfg, self.pw_gen, self.distro, DB_NAME) def _generate_nova_conf(self): conf_fn = self._get_target_config_name(API_CONF) LOG.info("Generating dynamic content for nova: %r" % (conf_fn)) nova_conf_contents = self.conf_maker.configure() 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): if config_fn == PASTE_CONF: return comp.PythonInstallComponent._get_source_config(self, PASTE_SOURCE_FN) if config_fn == LOGGING_CONF: config_fn = LOGGING_SOURCE_FN # FIXME, maybe we shouldn't be sucking these from checked out code? fn = sh.joinpths(self.app_dir, 'etc', "nova", config_fn) contents = sh.load_file(fn) return (fn, contents) def _get_param_map(self, config_fn): mp = comp.PythonInstallComponent._get_param_map(self, config_fn) mp['CFG_FILE'] = sh.joinpths(self.cfg_dir, API_CONF) mp['BIN_DIR'] = self.bin_dir if config_fn == NET_INIT_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 return configs_made class NovaRuntime(NovaMixin, comp.PythonRuntime): def __init__(self, *args, **kargs): comp.PythonRuntime.__init__(self, *args, **kargs) self.bin_dir = sh.joinpths(self.app_dir, BIN_DIR) self.wait_time = max(self.cfg.getint('default', 'service_wait_seconds'), 1) self.virsh = lv.Virsh(self.cfg, self.distro) def _setup_network_init(self): tgt_fn = sh.joinpths(self.bin_dir, NET_INIT_CONF) if sh.is_executable(tgt_fn): LOG.info("Creating your nova network to be used with instances.") # If still there, run it # these environment additions are important # in that they eventually affect how this script runs if 'quantum' in self.options: LOG.info("Waiting %s seconds so that quantum can start up before running first time init." % (self.wait_time)) sh.sleep(self.wait_time) env = dict() env['ENABLED_SERVICES'] = ",".join(self.options) setup_cmd = NET_INIT_CMD_ROOT + [tgt_fn] LOG.info("Running %r command to initialize nova's network." % (" ".join(setup_cmd))) sh.execute(*setup_cmd, env_overrides=env, run_as_root=False) utils.mark_unexecute_file(tgt_fn, env) def post_start(self): self._setup_network_init() def _get_apps_to_start(self): apps = list() for subsys in self.desired_subsystems: apps.append({ 'name': SUB_COMPONENT_NAME_MAP[subsys], 'path': sh.joinpths(self.bin_dir, SUB_COMPONENT_NAME_MAP[subsys]), }) return apps 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': # FIXME: The configuration for the virtualization-type # should come from the persona. virt_type = lv.canon_libvirt_type(self.cfg.get('nova', 'libvirt_type')) LOG.info("Checking that your selected libvirt virtualization type %r is working and running." % (virt_type)) try: self.virsh.check_virt(virt_type) self.virsh.restart_service() except exceptions.ProcessExecutionError as e: msg = ("Libvirt type %r does not seem to be active or configured correctly, " "perhaps you should be using %r instead: %s" % (virt_type, lv.DEF_VIRT_TYPE, e)) raise exceptions.StartException(msg) def _get_param_map(self, app_name): params = comp.PythonRuntime._get_param_map(self, app_name) params['CFG_FILE'] = sh.joinpths(self.cfg_dir, 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, installer): self.installer = weakref.proxy(installer) self.cfg = installer.cfg self.app_dir = installer.app_dir self.distro = installer.distro def setup_volumes(self): self._setup_vol_groups() def verify(self): pass 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.app_dir, '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: %r" % (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: %r" % (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 cmdrestart = self.distro.get_command('iscsi', 'restart', quiet=True) if cmdrestart: sh.execute(*cmdrestart, run_as_root=True, 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]: vol_name_prefix = self.cfg.getdefaulted('nova', 'volume_name_prefix', DEF_VOL_PREFIX) LOG.debug("Using volume name prefix: %r" % (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: %r" % (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 # See also: https://github.com/openstack/nova/blob/master/etc/nova/nova.conf.sample class NovaConfConfigurator(object): def __init__(self, installer): self.installer = weakref.proxy(installer) self.cfg = installer.cfg self.pw_gen = installer.pw_gen self.instances = installer.instances self.component_dir = installer.component_dir self.app_dir = installer.app_dir self.tracewriter = installer.tracewriter self.paste_conf_fn = installer.paste_conf_fn self.distro = installer.distro self.cfg_dir = installer.cfg_dir self.options = installer.options self.xvnc_enabled = installer.xvnc_enabled self.volumes_enabled = installer.volumes_enabled self.novnc_enabled = 'no-vnc' in installer.options def _getbool(self, name): return self.cfg.getboolean('nova', name) def _getstr(self, name, default=''): return self.cfg.getdefaulted('nova', name, default) def verify(self): # Do a little check to make sure actually have that interface/s public_interface = self._getstr('public_interface') vlan_interface = self._getstr('vlan_interface', public_interface) if not utils.is_interface(public_interface): msg = "Public interface %r is not a known interface" % (public_interface) raise exceptions.ConfigException(msg) if not utils.is_interface(vlan_interface): msg = "VLAN interface %r is not a known interface" % (vlan_interface) raise exceptions.ConfigException(msg) # Driver specific interface checks drive_canon = canon_virt_driver(self._getstr('virt_driver')) if drive_canon == 'xenserver': xs_flat_ifc = self._getstr('xs_flat_interface', XS_DEF_INTERFACE) if xs_flat_ifc and not utils.is_interface(xs_flat_ifc): msg = "Xenserver flat interface %s is not a known interface" % (xs_flat_ifc) raise exceptions.ConfigException(msg) elif drive_canon == 'libvirt': flat_interface = self._getstr('flat_interface') if flat_interface and not utils.is_interface(flat_interface): msg = "Libvirt flat interface %s is not a known interface" % (flat_interface) raise exceptions.ConfigException(msg) def configure(self): # Everything built goes in here nova_conf = NovaConf() # Used more than once so we calculate it ahead of time hostip = self.cfg.get('host', 'ip') 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) # FIXME: ?? 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)) # Rate limit the api?? if self._getbool('api_rate_limit'): nova_conf.add('api_rate_limit', str(True)) else: nova_conf.add('api_rate_limit', str(False)) # Setup any network settings self._configure_network_settings(nova_conf) # Setup nova volume settings if self.volumes_enabled: self._configure_vols(nova_conf) # The ip of where we are running nova_conf.add('my_ip', hostip) # Setup your sql connection db_dsn = db.fetch_dbdsn(self.cfg, self.pw_gen, DB_NAME) nova_conf.add('sql_connection', db_dsn) # Configure anything libvirt related? virt_driver = canon_virt_driver(self._getstr('virt_driver')) if virt_driver == 'libvirt': libvirt_type = lv.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) # Configs for 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_dir, '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) # Annnnnd 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 u be using sir? img_service = self._getstr('img_service', DEF_IMAGE_SERVICE) nova_conf.add('image_service', img_service) # If glance then where is it? 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 'quantum' in self.options: 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 'melange' in self.options: 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))) # Configs dhcp bridge stuff??? # TODO: why is this the same as the nova.conf? nova_conf.add('dhcpbridge_flagfile', sh.joinpths(self.cfg_dir, 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) 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: %r", instances_path) self.tracewriter.dirs_made(*sh.mkdirslist(instances_path)) LOG.debug("Adjusting permissions of instance directory: %r", instances_path) sh.chmod(instances_path, 0777) instance_parent = sh.dirname(instances_path) LOG.debug("Adjusting permissions of instance directory parent: %r", instance_parent) # In cases where you are using kvm + qemu # On certain distros (ie RHEL) this user needs to be able # To enter the parents of the instance path, if this is in /home/BLAH/ then # Without enabling the whole path, this user can't write there. This helps fix that... with sh.Rooted(True): for p in sh.explode_path(instance_parent): if not os.access(p, os.X_OK) and sh.isdir(p): # Need to be able to go into that directory sh.chmod(p, os.stat(p).st_mode | 0755) 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) 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)) xs_flat_ifc = self._getstr('xs_flat_interface', XS_DEF_INTERFACE) if xs_flat_ifc: nova_conf.add('flat_interface', xs_flat_ifc) 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: nova_conf.add('flat_interface', flat_interface) # This class represents the data/format of 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 %r with value %r" % (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