947 lines
33 KiB
Python
947 lines
33 KiB
Python
import base64
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import contextlib
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import os
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import random
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import re
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import shutil
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import string
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import subprocess
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import charmhelpers.contrib.network.ip as ch_ip
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import charmhelpers.contrib.openstack.utils as os_utils
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import charmhelpers.contrib.openstack.ha as os_ha
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import charmhelpers.contrib.openstack.ha.utils as os_ha_utils
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import charmhelpers.contrib.openstack.cert_utils as cert_utils
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import charmhelpers.core.hookenv as hookenv
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import charmhelpers.core.host as ch_host
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import charmhelpers.fetch as fetch
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import charms.reactive.relations as relations
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from charms_openstack.charm.core import (
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BaseOpenStackCharm,
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BaseOpenStackCharmActions,
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BaseOpenStackCharmAssessStatus,
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get_snap_version,
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)
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from charms_openstack.charm.utils import (
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get_upstream_version,
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is_data_changed,
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)
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import charms_openstack.adapters as os_adapters
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import charms_openstack.ip as os_ip
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VIP_KEY = "vip"
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CIDR_KEY = "vip_cidr"
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IFACE_KEY = "vip_iface"
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DNSHA_KEY = "dns-ha"
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APACHE_SSL_VHOST = '/etc/apache2/sites-available/openstack_https_frontend.conf'
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SYSTEM_CA_CERTS = '/etc/ssl/certs/ca-certificates.crt'
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SNAP_CA_CERTS = '/var/snap/{}/common/etc/ssl/certs/ca-certificates.crt'
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class OpenStackCharm(BaseOpenStackCharm,
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BaseOpenStackCharmActions,
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BaseOpenStackCharmAssessStatus):
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"""
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Base class for all OpenStack Charm classes;
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encapulates general OpenStack charm payload operations
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Theory:
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Derive form this class, set the name, first_release and releases class
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variables so that get_charm_instance() will create an instance of this
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charm.
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See the other class variables for details on what they are for and do.
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"""
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abstract_class = True
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# first_release = this is the first release in which this charm works
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release = 'icehouse'
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# package type - package type (deb or snap) in which this charm works
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package_type = 'deb'
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# The name of the charm (for printing, etc.)
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name = 'charmname'
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# List of packages to install
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packages = []
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# List of packages to purge
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purge_packages = []
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# Python version used to execute installed workload
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python_version = 2
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# List of snaps to install
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snaps = []
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# Mode to install snaps in (jailmode/devmode/classic)
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snap_mode = 'jailmode'
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# Package to determine application version from
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# defaults to first in packages if not provided
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version_package = release_pkg = None
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# Snap to determine application version from;
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# defaults to first in snaps if not provided
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version_snap = release_snap = None
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# Keystone endpoint type
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service_type = None
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# Default service for the charm
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default_service = None
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# A dictionary of:
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# {
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# 'config.file': ['list', 'of', 'services', 'to', 'restart'],
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# 'config2.file': ['more', 'services'],
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# }
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restart_map = {}
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# The list of required services that are checked for assess_status
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# e.g. required_relations = ['identity-service', 'shared-db']
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required_relations = []
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# The command used to sync the database
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sync_cmd = []
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# The list of services that this charm manages
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services = []
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# package_codenames = {}
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# The name of the repository source configuration option.
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# Useful for charms managing software from UCA and consuming the
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# `openstack` layer directly for re-use of common code, but not being a
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# OpenStack component.
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source_config_key = 'openstack-origin'
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@property
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def resource_install_map(self):
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"""Return map of resource names to installation methods
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:returns Map of Juju resource names to installation methods
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:rtype: {'resource_name': f}
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"""
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install_map = {
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'driver-deb': self.install_deb
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}
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return install_map
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def install_deb(self, deb):
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"""Install the given deb.
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:param deb: Path to deb
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:type: str
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"""
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# No attempt is made to deal with dependancies. These should be
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# handled by the charms 'packages' list.
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subprocess.check_call(['dpkg', '-i', deb])
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def install_resources(self):
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"""Install Juju application resources
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"""
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for resource_name, install_func in self.resource_install_map.items():
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resource = hookenv.resource_get(resource_name)
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if resource:
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install_func(resource)
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@property
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def region(self):
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"""Return the OpenStack Region as contained in the config item 'region'
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"""
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return self.config['region']
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@property
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def public_url(self):
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"""Return the public endpoint URL for the default service as specified
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in the self.default_service attribute
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"""
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return "{}:{}".format(os_ip.canonical_url(os_ip.PUBLIC),
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self.api_port(self.default_service,
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os_ip.PUBLIC))
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@property
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def admin_url(self):
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"""Return the admin endpoint URL for the default service as specificed
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in the self.default_service attribute
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"""
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return "{}:{}".format(os_ip.canonical_url(os_ip.ADMIN),
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self.api_port(self.default_service,
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os_ip.ADMIN))
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@property
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def internal_url(self):
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"""Return the internal internal endpoint URL for the default service as
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specificated in the self.default_service attribtue
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"""
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return "{}:{}".format(os_ip.canonical_url(os_ip.INTERNAL),
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self.api_port(self.default_service,
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os_ip.INTERNAL))
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@property
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def application_version(self):
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"""Return the current version of the application being deployed by
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the charm, as indicated by the version_package or version_snap
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attribute
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"""
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if os_utils.snap_install_requested():
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if not self.version_snap:
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self.version_snap = self.snaps[0]
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version = get_snap_version(self.version_snap,
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fatal=False)
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if not version:
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version = os_utils.get_os_codename_install_source(
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self.config[self.source_config_key]
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)
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else:
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if not self.version_package:
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self.version_package = self.packages[0]
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version = get_upstream_version(
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self.version_package
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)
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if not version:
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version = os_utils.os_release(self.version_package)
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return version
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def haproxy_enabled(self):
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"""Determine if haproxy is fronting the services
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The OpenStackCharm class may be used for subordinates or charms which
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do not use haproxy. This method is overriden in the HAOpenStackCharm
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class where haproxy is utilized.
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@return None
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"""
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pass
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def run_pause_or_resume(self, action):
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"""Helper to enable pause/resume action to be processed."""
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actions = {
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'pause': os_utils.pause_unit,
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'resume': os_utils.resume_unit}
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pause_services = self.services[:]
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if self.haproxy_enabled():
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pause_services.append('haproxy')
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actions[action](self.assess_status, services=pause_services)
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def pause(self):
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"""Pause the charms services."""
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self.run_pause_or_resume('pause')
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def resume(self):
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"""Resume the charms services."""
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self.run_pause_or_resume('resume')
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def series_upgrade_prepare(self):
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"""Prepare to upgrade series"""
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os_utils.set_unit_upgrading()
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self.run_pause_or_resume('pause')
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def series_upgrade_complete(self):
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"""Prepare to upgrade series"""
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os_utils.clear_unit_paused()
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os_utils.clear_unit_upgrading()
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self.run_pause_or_resume('resume')
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def restart_services(self):
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"""Restart services"""
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services = self.services[:]
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if self.haproxy_enabled():
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services.append('haproxy')
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os_utils.manage_payload_services('stop', services)
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os_utils.manage_payload_services('start', services)
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@property
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def rabbit_client_cert_dir(self):
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return '/var/lib/charm/{}'.format(hookenv.service_name())
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@property
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def rabbit_cert_file(self):
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return '{}/rabbit-client-ca.pem'.format(self.rabbit_client_cert_dir)
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def get_certs_and_keys(self, keystone_interface=None,
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certificates_interface=None):
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"""Collect SSL config for local endpoints
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SSL keys and certs may come from user specified configuration for this
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charm or they may come directly from Keystone.
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If collecting from keystone there may be a certificate and key per
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endpoint (public, admin etc).
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@returns [
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{'key': 'key1', 'cert': 'cert1', 'ca': 'ca1', 'cn': 'cn1'}
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{'key': 'key2', 'cert': 'cert2', 'ca': 'ca2', 'cn': 'cn2'}
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...
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]
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"""
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if self.config_defined_ssl_key and self.config_defined_ssl_cert:
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ssl_artifacts = []
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for ep_type in [os_ip.INTERNAL, os_ip.ADMIN, os_ip.PUBLIC]:
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ssl_artifacts.append({
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'key': self.config_defined_ssl_key.decode('utf-8'),
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'cert': self.config_defined_ssl_cert.decode('utf-8'),
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'ca': (self.config_defined_ssl_ca.decode('utf-8')
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if self.config_defined_ssl_ca else None),
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'cn': os_ip.resolve_address(endpoint_type=ep_type)})
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return ssl_artifacts
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elif keystone_interface:
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keys_and_certs = []
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for addr in self.get_local_addresses():
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key = keystone_interface.get_ssl_key(addr)
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cert = keystone_interface.get_ssl_cert(addr)
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ca = keystone_interface.get_ssl_ca()
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if key and cert:
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keys_and_certs.append({
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'key': key,
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'cert': cert,
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'ca': ca,
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'cn': addr})
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return keys_and_certs
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elif certificates_interface:
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keys_and_certs = []
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reqs = certificates_interface.get_batch_requests()
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ca = certificates_interface.get_ca()
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chain = certificates_interface.get_chain()
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for cn, data in sorted(reqs.items()):
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cert = data['cert']
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if chain:
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cert = cert + os.linesep + chain
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keys_and_certs.append({
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'key': data['key'],
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'cert': cert,
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'ca': ca,
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'cn': cn})
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return keys_and_certs
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else:
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return []
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def _get_b64decode_for(self, param):
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config_value = self.config.get(param)
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if config_value:
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return base64.b64decode(config_value)
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return None
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@property
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@hookenv.cached
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def config_defined_ssl_key(self):
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return self._get_b64decode_for('ssl_key')
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@property
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@hookenv.cached
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def config_defined_ssl_cert(self):
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return self._get_b64decode_for('ssl_cert')
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@property
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@hookenv.cached
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def config_defined_ssl_ca(self):
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return self._get_b64decode_for('ssl_ca')
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def configure_ssl(self, keystone_interface=None):
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"""Configure SSL certificates and keys
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NOTE(AJK): This function tries to minimise the work it does,
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particularly with writing files and restarting apache.
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@param keystone_interface KeystoneRequires class
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"""
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keystone_interface = (
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relations.endpoint_from_flag('identity-service.available.ssl') or
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relations
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.endpoint_from_flag('identity-service.available.ssl_legacy'))
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certificates_interface = relations.endpoint_from_flag(
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'certificates.batch.cert.available')
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ssl_objects = self.get_certs_and_keys(
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keystone_interface=keystone_interface,
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certificates_interface=certificates_interface)
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with is_data_changed('configure_ssl.ssl_objects',
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ssl_objects) as changed:
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if ssl_objects:
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if changed:
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for ssl in ssl_objects:
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self.set_state('ssl.requested', True)
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self.configure_cert(
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ssl['cert'], ssl['key'], cn=ssl['cn'])
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self.configure_ca(ssl['ca'])
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cert_utils.create_ip_cert_links(
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os.path.join('/etc/apache2/ssl/', self.name))
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if not os_utils.snap_install_requested():
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self.configure_apache()
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ch_host.service_reload('apache2')
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self.remove_state('ssl.requested')
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self.set_state('ssl.enabled', True)
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else:
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self.set_state('ssl.enabled', False)
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amqp_ssl = relations.endpoint_from_flag('amqp.available.ssl')
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if amqp_ssl:
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self.configure_rabbit_cert(amqp_ssl)
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def configure_rabbit_cert(self, rabbit_interface):
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if not os.path.exists(self.rabbit_client_cert_dir):
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os.makedirs(self.rabbit_client_cert_dir)
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with open(self.rabbit_cert_file, 'w') as crt:
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crt.write(rabbit_interface.get_ssl_cert())
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@contextlib.contextmanager
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def update_central_cacerts(self, cert_files, update_certs=True):
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"""Update Central certs info if once of cert_files changes"""
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checksums = {path: ch_host.path_hash(path)
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for path in cert_files}
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yield
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new_checksums = {path: ch_host.path_hash(path)
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for path in cert_files}
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if checksums != new_checksums and update_certs:
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self.run_update_certs()
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self.install_snap_certs()
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def configure_ca(self, ca_cert, update_certs=True):
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"""Write Certificate Authority certificate"""
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# TODO(jamespage): work this out for snap based installations
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cert_file = (
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'/usr/local/share/ca-certificates/keystone_juju_ca_cert.crt')
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if ca_cert:
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with self.update_central_cacerts([cert_file], update_certs):
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with open(cert_file, 'w') as crt:
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crt.write(ca_cert)
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def run_update_certs(self):
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"""Update certifiacte
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Run update-ca-certificates to update the directory /etc/ssl/certs to
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hold SSL certificates and generates ca-certificates.crt, a concatenated
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single-file list of certificates
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"""
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subprocess.check_call(['update-ca-certificates', '--fresh'])
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|
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def install_snap_certs(self):
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"""Install systems CA certificates for a snap
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Installs the aggregated host system ca-certificates.crt into
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$SNAP_COMMON/etc/ssl/certs for services running within a sandboxed
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snap to consume.
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Snaps should set the REQUESTS_CA_BUNDLE environment variable to
|
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ensure requests based API calls use the updated system certs.
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"""
|
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if (os_utils.snap_install_requested() and
|
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os.path.exists(SYSTEM_CA_CERTS)):
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ca_certs = SNAP_CA_CERTS.format(self.primary_snap)
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ch_host.mkdir(os.path.dirname(ca_certs))
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shutil.copyfile(SYSTEM_CA_CERTS, ca_certs)
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|
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|
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class OpenStackAPICharm(OpenStackCharm):
|
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"""The base class for API OS charms -- this just bakes in the default
|
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configuration and adapter classes.
|
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"""
|
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abstract_class = True
|
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|
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MEMCACHE_CONF = '/etc/memcached.conf'
|
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# The adapters class that this charm uses to adapt interfaces.
|
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# If None, then it defaults to OpenstackRelationAdapters
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adapters_class = os_adapters.OpenStackAPIRelationAdapters
|
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|
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# The configuration base class to use for the charm
|
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# If None, then the default ConfigurationAdapter is used.
|
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configuration_class = os_adapters.APIConfigurationAdapter
|
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|
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# These can be overridden in the derived charm class to allow specialism of
|
|
# config files. These values are read in the APIConfigurationAdapter and
|
|
# used to furnish the dictionary provided from the property
|
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# 'wsgi_worker_context'. e.g. config.wsgi_worker_context.processes would
|
|
# be the number of processes for the main API wsgi worker.
|
|
wsgi_script = None
|
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wsgi_admin_script = None
|
|
wsgi_public_script = None
|
|
wsgi_process_weight = None # use the default from charm-helpers
|
|
wsgi_admin_process_weight = None # use the default from charm-helpers
|
|
wsgi_public_process_weight = None # use the default from charm-helpers
|
|
|
|
def upgrade_charm(self):
|
|
"""Setup token cache in case previous charm version did not."""
|
|
self.setup_token_cache()
|
|
super().upgrade_charm()
|
|
|
|
def install(self):
|
|
"""Install packages related to this charm based on
|
|
contents of self.packages attribute.
|
|
"""
|
|
self.configure_source()
|
|
super().install()
|
|
|
|
def setup_token_cache(self):
|
|
"""Check if a token cache package is needed and install it if it is"""
|
|
if fetch.filter_installed_packages(self.token_cache_pkgs()):
|
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self.install()
|
|
|
|
def enable_memcache(self, release=None):
|
|
"""Determine if memcache should be enabled on the local unit
|
|
|
|
@param release: release of OpenStack currently deployed
|
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@returns boolean Whether memcache should be enabled
|
|
"""
|
|
if not release:
|
|
release = os_utils.get_os_codename_install_source(
|
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self.config[self.source_config_key])
|
|
if release not in os_utils.OPENSTACK_RELEASES:
|
|
return ValueError("Unkown release {}".format(release))
|
|
return (os_utils.OPENSTACK_RELEASES.index(release) >=
|
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os_utils.OPENSTACK_RELEASES.index('mitaka'))
|
|
|
|
def token_cache_pkgs(self, release=None):
|
|
"""Determine additional packages needed for token caching
|
|
|
|
@param release: release of OpenStack currently deployed
|
|
@returns List of package to enable token caching
|
|
"""
|
|
packages = []
|
|
if self.enable_memcache(release=release):
|
|
if self.python_version == 2:
|
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packages.extend(['memcached', 'python-memcache'])
|
|
else:
|
|
packages.extend(['memcached', 'python3-memcache'])
|
|
return packages
|
|
|
|
def get_amqp_credentials(self):
|
|
"""Provide the default amqp username and vhost as a tuple.
|
|
|
|
This needs to be overridden in a derived class to provide the username
|
|
and vhost to the amqp interface IF the default amqp handlers are being
|
|
used.
|
|
:returns (username, host): two strings to send to the amqp provider.
|
|
"""
|
|
raise RuntimeError(
|
|
"get_amqp_credentials() needs to be overridden in the derived "
|
|
"class")
|
|
|
|
def get_database_setup(self):
|
|
"""Provide the default database credentials as a list of 3-tuples
|
|
|
|
This is used when using the default handlers for the shared-db service
|
|
and provides the (db, db_user, ip) for each database as a list.
|
|
|
|
returns a structure of:
|
|
[
|
|
{'database': <database>,
|
|
'username': <username>,
|
|
'hostname': <hostname of this unit>
|
|
'prefix': <the optional prefix for the database>, },
|
|
]
|
|
|
|
This allows multiple databases to be setup.
|
|
|
|
If more complex database setup is required, then the default
|
|
setup_database() will need to be ignored, and a custom function
|
|
written.
|
|
|
|
:returns [{'database': ...}, ...]: credentials for multiple databases
|
|
"""
|
|
raise RuntimeError(
|
|
"get_database_setup() needs to be overridden in the derived "
|
|
"class")
|
|
|
|
def get_certificate_requests(self):
|
|
"""Return a dict of certificate requests
|
|
"""
|
|
return cert_utils.get_certificate_request(
|
|
json_encode=False).get('cert_requests', {})
|
|
|
|
@property
|
|
def all_packages(self):
|
|
"""List of packages to be installed
|
|
|
|
@return ['pkg1', 'pkg2', ...]
|
|
"""
|
|
return (super(OpenStackAPICharm, self).all_packages +
|
|
self.token_cache_pkgs())
|
|
|
|
@property
|
|
def all_snaps(self):
|
|
"""List of snaps to be installed
|
|
|
|
@return ['snap1', 'snap2', ...]
|
|
"""
|
|
return super().all_snaps
|
|
|
|
@property
|
|
def full_restart_map(self):
|
|
"""Map of services to be restarted if a file changes
|
|
|
|
@return {
|
|
'file1': ['svc1', 'svc3'],
|
|
'file2': ['svc2', 'svc3'],
|
|
...
|
|
}
|
|
"""
|
|
_restart_map = super(OpenStackAPICharm, self).full_restart_map.copy()
|
|
if self.enable_memcache():
|
|
_restart_map[self.MEMCACHE_CONF] = ['memcached']
|
|
return _restart_map
|
|
|
|
|
|
class HAOpenStackCharm(OpenStackAPICharm):
|
|
|
|
abstract_class = True
|
|
|
|
HAPROXY_CONF = '/etc/haproxy/haproxy.cfg'
|
|
ha_resources = []
|
|
|
|
def __init__(self, **kwargs):
|
|
super(HAOpenStackCharm, self).__init__(**kwargs)
|
|
self.set_haproxy_stat_password()
|
|
|
|
@property
|
|
def apache_ssl_vhost_file(self):
|
|
"""Apache vhost for SSL termination
|
|
|
|
:returns: string
|
|
"""
|
|
return APACHE_SSL_VHOST
|
|
|
|
def enable_apache_ssl_vhost(self):
|
|
"""Enable Apache vhost for SSL termination
|
|
|
|
Enable Apache vhost for SSL termination if vhost exists and it is not
|
|
curently enabled
|
|
"""
|
|
if not os.path.exists(self.apache_ssl_vhost_file):
|
|
open(self.apache_ssl_vhost_file, 'a').close()
|
|
|
|
check_enabled = subprocess.call(
|
|
['a2query', '-s', 'openstack_https_frontend'])
|
|
if check_enabled:
|
|
subprocess.check_call(['a2ensite', 'openstack_https_frontend'])
|
|
ch_host.service_reload('apache2', restart_on_failure=True)
|
|
|
|
def configure_apache(self):
|
|
if self.apache_enabled():
|
|
self.install()
|
|
self.enable_apache_modules()
|
|
self.enable_apache_ssl_vhost()
|
|
|
|
@property
|
|
def all_packages(self):
|
|
"""List of packages to be installed
|
|
|
|
@return ['pkg1', 'pkg2', ...]
|
|
"""
|
|
_packages = super(HAOpenStackCharm, self).all_packages
|
|
if self.haproxy_enabled():
|
|
_packages.append('haproxy')
|
|
if not os_utils.snap_install_requested():
|
|
if self.apache_enabled():
|
|
_packages.append('apache2')
|
|
return _packages
|
|
|
|
@property
|
|
def all_snaps(self):
|
|
"""List of snaps to be installed
|
|
|
|
@return ['snap1', 'snap2', ...]
|
|
"""
|
|
_snaps = super().all_snaps
|
|
return _snaps
|
|
|
|
@property
|
|
def full_restart_map(self):
|
|
"""Map of services to be restarted if a file changes
|
|
|
|
@return {
|
|
'file1': ['svc1', 'svc3'],
|
|
'file2': ['svc2', 'svc3'],
|
|
...
|
|
}
|
|
"""
|
|
_restart_map = super(HAOpenStackCharm, self).full_restart_map
|
|
if self.haproxy_enabled():
|
|
_restart_map[self.HAPROXY_CONF] = ['haproxy']
|
|
if os_utils.snap_install_requested():
|
|
# TODO(coreycb): add nginx config/service for ssl vhost
|
|
pass
|
|
else:
|
|
if self.apache_enabled():
|
|
_restart_map[self.apache_ssl_vhost_file] = ['apache2']
|
|
return _restart_map
|
|
|
|
def apache_enabled(self):
|
|
"""Determine if apache is being used
|
|
|
|
@return True if apache is being used"""
|
|
if os_utils.snap_install_requested():
|
|
return False
|
|
else:
|
|
return (self.get_state('ssl.enabled') or
|
|
self.get_state('ssl.requested'))
|
|
|
|
def nginx_ssl_enabled(self):
|
|
"""Determine if nginx is being used
|
|
|
|
@return True if nginx is being used"""
|
|
if os_utils.snap_install_requested():
|
|
return (self.get_state('ssl.enabled') or
|
|
self.get_state('ssl.requested'))
|
|
else:
|
|
return False
|
|
|
|
def haproxy_enabled(self):
|
|
"""Determine if haproxy is fronting the services
|
|
|
|
@return True if haproxy is fronting the service"""
|
|
return 'haproxy' in self.ha_resources
|
|
|
|
def configure_ha_resources(self, hacluster):
|
|
"""Inform the ha subordinate about each service it should manage. The
|
|
child class specifies the services via self.ha_resources
|
|
|
|
@param hacluster instance of interface class HAClusterRequires
|
|
"""
|
|
RESOURCE_TYPES = {
|
|
'vips': self._add_ha_vips_config,
|
|
'haproxy': self._add_ha_haproxy_config,
|
|
'dnsha': self._add_dnsha_config,
|
|
}
|
|
if self.ha_resources:
|
|
for res_type in self.ha_resources:
|
|
RESOURCE_TYPES[res_type](hacluster)
|
|
hacluster.bind_resources(iface=self.config[IFACE_KEY])
|
|
|
|
def _add_ha_vips_config(self, hacluster):
|
|
"""Add a VirtualIP object for each user specified vip to self.resources
|
|
|
|
@param hacluster instance of interface class HAClusterRequires
|
|
"""
|
|
if not self.config.get(VIP_KEY):
|
|
return
|
|
for vip in self.config[VIP_KEY].split():
|
|
iface, netmask, fallback = os_ha_utils.get_vip_settings(vip)
|
|
if fallback:
|
|
hacluster.add_vip(
|
|
self.name,
|
|
vip,
|
|
iface,
|
|
netmask)
|
|
else:
|
|
hacluster.add_vip(self.name, vip)
|
|
if iface:
|
|
# Remove vip resource using old raw nic name.
|
|
old_vip_key = 'res_{}_{}_vip'.format(self.name, iface)
|
|
hacluster.delete_resource(old_vip_key)
|
|
|
|
def _add_ha_haproxy_config(self, hacluster):
|
|
"""Add a InitService object for haproxy to self.resources
|
|
|
|
@param hacluster instance of interface class HAClusterRequires
|
|
"""
|
|
hacluster.add_init_service(self.name, 'haproxy')
|
|
|
|
def _add_dnsha_config(self, hacluster):
|
|
"""Add a DNSHA object to self.resources
|
|
|
|
@param hacluster instance of interface class HAClusterRequires
|
|
"""
|
|
if not self.config.get(DNSHA_KEY):
|
|
return
|
|
settings = ['os-admin-hostname', 'os-internal-hostname',
|
|
'os-public-hostname', 'os-access-hostname']
|
|
|
|
for setting in settings:
|
|
hostname = self.config.get(setting)
|
|
if hostname is None:
|
|
hookenv.log(
|
|
'DNS HA: Hostname setting {} is None. Ignoring.'.format(
|
|
setting),
|
|
hookenv.DEBUG)
|
|
continue
|
|
m = re.search('os-(.+?)-hostname', setting)
|
|
if m:
|
|
endpoint_type = m.group(1)
|
|
# resolve_address's ADDRESS_MAP uses 'int' not 'internal'
|
|
if endpoint_type == 'internal':
|
|
endpoint_type = 'int'
|
|
else:
|
|
msg = (
|
|
'Unexpected DNS hostname setting: {}. Cannot determine '
|
|
'endpoint_type name'.format(setting))
|
|
hookenv.status_set('blocked', msg)
|
|
raise os_ha.DNSHAException(msg)
|
|
ip = os_ip.resolve_address(
|
|
endpoint_type=endpoint_type,
|
|
override=False)
|
|
hacluster.add_dnsha(self.name, ip, hostname, endpoint_type)
|
|
|
|
def set_haproxy_stat_password(self):
|
|
"""Set a stats password for accessing haproxy statistics"""
|
|
if not self.get_state('haproxy.stat.password'):
|
|
password = ''.join([
|
|
random.choice(string.ascii_letters + string.digits)
|
|
for n in range(32)])
|
|
self.set_state('haproxy.stat.password', password)
|
|
|
|
def enable_apache_modules(self):
|
|
"""Enable Apache modules needed for SSL termination"""
|
|
if os_utils.snap_install_requested():
|
|
return
|
|
restart = False
|
|
for module in ['ssl', 'proxy', 'proxy_http', 'headers']:
|
|
check_enabled = subprocess.call(['a2query', '-m', module])
|
|
if check_enabled != 0:
|
|
subprocess.check_call(['a2enmod', module])
|
|
restart = True
|
|
if restart:
|
|
ch_host.service_restart('apache2')
|
|
|
|
def get_default_cn(self):
|
|
"""Return the default Canonical Name to be used for SSL setup
|
|
|
|
@returns 'canonical_name'
|
|
"""
|
|
return os_ip.resolve_address(endpoint_type=os_ip.INTERNAL)
|
|
|
|
def configure_cert(self, cert, key, cn=None):
|
|
"""Configure service SSL cert and key
|
|
|
|
Write out service SSL certificate and key for Apache.
|
|
|
|
@param cert string SSL Certificate
|
|
@param key string SSL Key
|
|
@param cn string Canonical name for service
|
|
"""
|
|
if os_utils.snap_install_requested():
|
|
ssl_dir = '/var/snap/{snap_name}/common/etc/nginx/ssl'.format(
|
|
snap_name=self.primary_snap)
|
|
else:
|
|
ssl_dir = os.path.join('/etc/apache2/ssl/', self.name)
|
|
|
|
if not cn:
|
|
cn = self.get_default_cn()
|
|
|
|
ch_host.mkdir(path=ssl_dir)
|
|
if cn:
|
|
cert_filename = 'cert_{}'.format(cn)
|
|
key_filename = 'key_{}'.format(cn)
|
|
else:
|
|
cert_filename = 'cert'
|
|
key_filename = 'key'
|
|
|
|
ch_host.write_file(path=os.path.join(ssl_dir, cert_filename),
|
|
content=cert.encode('utf-8'))
|
|
ch_host.write_file(path=os.path.join(ssl_dir, key_filename),
|
|
content=key.encode('utf-8'))
|
|
|
|
def get_local_addresses(self):
|
|
"""Return list of local addresses on each configured network
|
|
|
|
For each network return an address the local unit has on that network
|
|
if one exists.
|
|
|
|
@returns [private_addr, admin_addr, public_addr, ...]
|
|
"""
|
|
addresses = [
|
|
os_utils.get_host_ip(hookenv.unit_get('private-address'))]
|
|
for addr_type in os_ip.ADDRESS_MAP.keys():
|
|
laddr = os_ip.resolve_address(endpoint_type=addr_type)
|
|
if laddr:
|
|
addresses.append(laddr)
|
|
return sorted(list(set(addresses)))
|
|
|
|
def update_peers(self, cluster):
|
|
"""Update peers in the cluster about the addresses that this unit
|
|
holds.
|
|
|
|
NOTE(AJK): This uses the helper is_data_changed() to track whether this
|
|
has already been done, and doesn't re-advertise the changes if nothing
|
|
has changed.
|
|
|
|
@param cluster: the interface object for the cluster relation
|
|
"""
|
|
laddrs = []
|
|
for addr_type in sorted(os_ip.ADDRESS_MAP.keys()):
|
|
cidr = self.config.get(os_ip.ADDRESS_MAP[addr_type]['config'])
|
|
laddr = ch_ip.get_relation_ip(
|
|
os_ip.ADDRESS_MAP[addr_type]['binding'],
|
|
cidr)
|
|
laddrs.append((addr_type, laddr))
|
|
with is_data_changed('update_peers.laddrs', laddrs) as changed:
|
|
if changed:
|
|
for (addr_type, laddr) in laddrs:
|
|
cluster.set_address(
|
|
os_ip.ADDRESS_MAP[addr_type]['binding'],
|
|
laddr)
|
|
|
|
|
|
class CinderStoragePluginCharm(OpenStackCharm):
|
|
|
|
abstract_class = True
|
|
|
|
# The name of the charm (for printing, etc.)
|
|
name = ''
|
|
|
|
# List of packages to install
|
|
# XXX execd_preinstall
|
|
packages = []
|
|
|
|
version_package = ''
|
|
# The list of required services that are checked for assess_status
|
|
# e.g. required_relations = ['identity-service', 'shared-db']
|
|
required_relations = []
|
|
|
|
# A dictionary of:
|
|
# {
|
|
# 'config.file': ['list', 'of', 'services', 'to', 'restart'],
|
|
# 'config2.file': ['more', 'services'],
|
|
# }
|
|
# The files that for the keys of the dict are monitored and if the file
|
|
# changes the corresponding services are restarted
|
|
# XXX This is more involved in the tradioional charm so we're
|
|
# probably missing something herw!
|
|
restart_map = {}
|
|
|
|
# first_release = this is the first release in which this charm works
|
|
release = ''
|
|
|
|
def install(self):
|
|
"""Install packages and resources."""
|
|
# Install PPA if one has been defined.
|
|
if self.config.get('driver-source'):
|
|
fetch.add_source(
|
|
self.config.get('driver-source'),
|
|
key=self.config.get('driver-key'))
|
|
fetch.apt_update()
|
|
super().install()
|
|
# All package install to run first incase payload has deps.
|
|
self.install_resources()
|
|
self.assess_status()
|
|
|
|
def upgrade_charm(self):
|
|
"""Run default upgrade_charm method and reinstall resources"""
|
|
super().upgrade_charm()
|
|
# A change in resources triggers an upgrade-charm
|
|
self.install_resources()
|
|
|
|
@property
|
|
def stateless(self):
|
|
raise NotImplementedError()
|
|
|
|
@property
|
|
def service_name(self):
|
|
return hookenv.service_name()
|
|
|
|
def cinder_configuration(self):
|
|
raise NotImplementedError()
|
|
|
|
def send_storage_backend_data(self):
|
|
cbend = relations.endpoint_from_flag('storage-backend.connected')
|
|
cbend.configure_principal(
|
|
backend_name=self.service_name,
|
|
configuration=self.cinder_configuration(),
|
|
stateless=self.stateless)
|
|
# Add an assess status which will be picked up later by the atexit()
|
|
# handler.
|
|
self.assess_status()
|