752 lines
25 KiB
Python
Executable File
752 lines
25 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright 2016 Canonical Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import base64
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import json
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import glob
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import os
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import shutil
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import sys
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import socket
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import subprocess
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import netifaces
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sys.path.append('lib')
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import ceph.utils as ceph
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from charmhelpers.core import hookenv
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from charmhelpers.core.hookenv import (
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log,
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DEBUG,
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ERROR,
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INFO,
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config,
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relation_ids,
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related_units,
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relation_get,
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relation_set,
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Hooks,
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UnregisteredHookError,
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service_name,
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status_get,
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status_set,
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storage_get,
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storage_list,
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application_version_set,
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)
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from charmhelpers.core.host import (
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umount,
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mkdir,
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cmp_pkgrevno,
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service_reload,
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service_restart,
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add_to_updatedb_prunepath,
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restart_on_change,
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write_file,
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is_container,
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)
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from charmhelpers.fetch import (
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add_source,
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apt_install,
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apt_update,
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filter_installed_packages,
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get_upstream_version,
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)
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from charmhelpers.core.sysctl import create as create_sysctl
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from charmhelpers.contrib.openstack.context import (
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AppArmorContext,
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)
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from utils import (
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get_host_ip,
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get_networks,
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assert_charm_supports_ipv6,
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render_template,
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get_public_addr,
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get_cluster_addr,
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get_blacklist,
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get_journal_devices,
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)
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from charmhelpers.contrib.openstack.alternatives import install_alternative
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from charmhelpers.contrib.network.ip import (
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get_ipv6_addr,
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format_ipv6_addr,
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get_relation_ip,
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)
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from charmhelpers.contrib.storage.linux.ceph import (
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CephConfContext)
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from charmhelpers.contrib.storage.linux.utils import (
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is_device_mounted,
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is_block_device,
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)
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from charmhelpers.contrib.charmsupport import nrpe
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from charmhelpers.contrib.hardening.harden import harden
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from charmhelpers.contrib.openstack.utils import (
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clear_unit_paused,
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clear_unit_upgrading,
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is_unit_paused_set,
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is_unit_upgrading_set,
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set_unit_paused,
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set_unit_upgrading,
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)
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from charmhelpers.core.unitdata import kv
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import charmhelpers.contrib.openstack.vaultlocker as vaultlocker
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hooks = Hooks()
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STORAGE_MOUNT_PATH = '/var/lib/ceph'
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def check_for_upgrade():
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if not os.path.exists(ceph._upgrade_keyring):
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log("Ceph upgrade keyring not detected, skipping upgrade checks.")
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return
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c = hookenv.config()
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old_version = ceph.resolve_ceph_version(c.previous('source') or
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'distro')
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log('old_version: {}'.format(old_version))
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new_version = ceph.resolve_ceph_version(hookenv.config('source') or
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'distro')
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log('new_version: {}'.format(new_version))
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# May be in a previous upgrade that was failed if the directories
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# still need an ownership update. Check this condition.
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resuming_upgrade = ceph.dirs_need_ownership_update('osd')
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if old_version == new_version and not resuming_upgrade:
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log("No new ceph version detected, skipping upgrade.", DEBUG)
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return
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if (ceph.UPGRADE_PATHS.get(old_version) == new_version) or\
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resuming_upgrade:
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if old_version == new_version:
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log('Attempting to resume possibly failed upgrade.',
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INFO)
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else:
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log("{} to {} is a valid upgrade path. Proceeding.".format(
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old_version, new_version))
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emit_cephconf(upgrading=True)
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ceph.roll_osd_cluster(new_version=new_version,
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upgrade_key='osd-upgrade')
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emit_cephconf(upgrading=False)
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else:
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# Log a helpful error message
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log("Invalid upgrade path from {} to {}. "
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"Valid paths are: {}".format(old_version,
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new_version,
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ceph.pretty_print_upgrade_paths()))
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def tune_network_adapters():
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interfaces = netifaces.interfaces()
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for interface in interfaces:
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if interface == "lo":
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# Skip the loopback
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continue
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log("Looking up {} for possible sysctl tuning.".format(interface))
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ceph.tune_nic(interface)
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def aa_profile_changed(service_name='ceph-osd-all'):
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"""
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Reload AA profie and restart OSD processes.
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"""
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log("Loading new AppArmor profile")
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service_reload('apparmor')
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log("Restarting ceph-osd services with new AppArmor profile")
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if ceph.systemd():
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for osd_id in ceph.get_local_osd_ids():
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service_restart('ceph-osd@{}'.format(osd_id))
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else:
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service_restart(service_name)
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@restart_on_change({
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'/etc/apparmor.d/usr.bin.ceph-osd': ['ceph-osd-all']},
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restart_functions={'ceph-osd-all': aa_profile_changed})
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def copy_profile_into_place():
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"""
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Copy the apparmor profiles included with the charm
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into the /etc/apparmor.d directory.
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"""
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new_install = False
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apparmor_dir = os.path.join(os.sep,
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'etc',
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'apparmor.d')
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for x in glob.glob('files/apparmor/*'):
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if not os.path.exists(os.path.join(apparmor_dir,
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os.path.basename(x))):
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new_install = True
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shutil.copy(x, apparmor_dir)
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return new_install
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class CephOsdAppArmorContext(AppArmorContext):
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""""Apparmor context for ceph-osd binary"""
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def __init__(self):
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super(CephOsdAppArmorContext, self).__init__()
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self.aa_profile = 'usr.bin.ceph-osd'
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def __call__(self):
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super(CephOsdAppArmorContext, self).__call__()
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if not self.ctxt:
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return self.ctxt
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self._ctxt.update({'aa_profile': self.aa_profile})
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return self.ctxt
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def use_vaultlocker():
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"""Determine whether vaultlocker should be used for OSD encryption
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:returns: whether vaultlocker should be used for key management
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:rtype: bool
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:raises: ValueError if vaultlocker is enable but ceph < 12.2.4"""
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if (config('osd-encrypt') and
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config('osd-encrypt-keymanager') == ceph.VAULT_KEY_MANAGER):
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if cmp_pkgrevno('ceph', '12.2.4') < 0:
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msg = ('vault usage only supported with ceph >= 12.2.4')
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status_set('blocked', msg)
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raise ValueError(msg)
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else:
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return True
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return False
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def use_bluestore():
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"""Determine whether bluestore should be used for OSD's
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:returns: whether bluestore disk format should be used
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:rtype: bool"""
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if cmp_pkgrevno('ceph', '12.2.0') < 0:
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return False
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return config('bluestore')
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def install_apparmor_profile():
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"""
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Install ceph apparmor profiles and configure
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based on current setting of 'aa-profile-mode'
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configuration option.
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"""
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log('Installing apparmor profile for ceph-osd')
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new_install = copy_profile_into_place()
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if new_install or config().changed('aa-profile-mode'):
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aa_context = CephOsdAppArmorContext()
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aa_context.setup_aa_profile()
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aa_profile_changed()
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def install_udev_rules():
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"""
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Install and reload udev rules for ceph-volume LV
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permissions
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"""
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if is_container():
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log('Skipping udev rule installation '
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'as unit is in a container', level=DEBUG)
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return
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for x in glob.glob('files/udev/*'):
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shutil.copy(x, '/lib/udev/rules.d')
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subprocess.check_call(['udevadm', 'control',
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'--reload-rules'])
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@hooks.hook('install.real')
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@harden()
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def install():
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add_source(config('source'), config('key'))
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apt_update(fatal=True)
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apt_install(packages=ceph.determine_packages(), fatal=True)
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if config('autotune'):
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tune_network_adapters()
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install_udev_rules()
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def az_info():
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az_info = ""
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config_az = config("availability_zone")
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juju_az_info = os.environ.get('JUJU_AVAILABILITY_ZONE')
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if juju_az_info:
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# NOTE(jamespage): avoid conflicting key with root
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# of crush hierarchy
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if juju_az_info == 'default':
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juju_az_info = 'default-rack'
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az_info = "{} rack={}".format(az_info, juju_az_info)
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if config_az:
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# NOTE(jamespage): avoid conflicting key with root
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# of crush hierarchy
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if config_az == 'default':
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config_az = 'default-row'
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az_info = "{} row={}".format(az_info, config_az)
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if az_info != "":
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log("AZ Info: " + az_info)
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return az_info
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def use_short_objects():
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'''
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Determine whether OSD's should be configured with
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limited object name lengths.
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@return: boolean indicating whether OSD's should be limited
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'''
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if cmp_pkgrevno('ceph', "10.2.0") >= 0:
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if config('osd-format') in ('ext4'):
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return True
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devices = config('osd-devices')
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if not devices:
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return False
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for device in devices.split():
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if device and not device.startswith('/dev'):
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# TODO: determine format of directory based
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# OSD location
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return True
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return False
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def get_ceph_context(upgrading=False):
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"""Returns the current context dictionary for generating ceph.conf
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:param upgrading: bool - determines if the context is invoked as
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part of an upgrade proedure Setting this to true
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causes settings useful during an upgrade to be
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defined in the ceph.conf file
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"""
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mon_hosts = get_mon_hosts()
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log('Monitor hosts are ' + repr(mon_hosts))
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networks = get_networks('ceph-public-network')
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public_network = ', '.join(networks)
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networks = get_networks('ceph-cluster-network')
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cluster_network = ', '.join(networks)
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cephcontext = {
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'auth_supported': get_auth(),
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'mon_hosts': ' '.join(mon_hosts),
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'fsid': get_fsid(),
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'old_auth': cmp_pkgrevno('ceph', "0.51") < 0,
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'crush_initial_weight': config('crush-initial-weight'),
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'osd_journal_size': config('osd-journal-size'),
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'osd_max_backfills': config('osd-max-backfills'),
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'osd_recovery_max_active': config('osd-recovery-max-active'),
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'use_syslog': str(config('use-syslog')).lower(),
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'ceph_public_network': public_network,
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'ceph_cluster_network': cluster_network,
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'loglevel': config('loglevel'),
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'dio': str(config('use-direct-io')).lower(),
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'short_object_len': use_short_objects(),
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'upgrade_in_progress': upgrading,
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'bluestore': use_bluestore(),
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'bluestore_experimental': cmp_pkgrevno('ceph', '12.1.0') < 0,
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'bluestore_block_wal_size': config('bluestore-block-wal-size'),
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'bluestore_block_db_size': config('bluestore-block-db-size'),
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}
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if config('prefer-ipv6'):
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dynamic_ipv6_address = get_ipv6_addr()[0]
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if not public_network:
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cephcontext['public_addr'] = dynamic_ipv6_address
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if not cluster_network:
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cephcontext['cluster_addr'] = dynamic_ipv6_address
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else:
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cephcontext['public_addr'] = get_public_addr()
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cephcontext['cluster_addr'] = get_cluster_addr()
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if config('customize-failure-domain'):
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az = az_info()
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if az:
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cephcontext['crush_location'] = "root=default {} host={}" \
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.format(az, socket.gethostname())
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else:
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log(
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"Your Juju environment doesn't"
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"have support for Availability Zones"
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)
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# NOTE(dosaboy): these sections must correspond to what is supported in the
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# config template.
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sections = ['global', 'osd']
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cephcontext.update(CephConfContext(permitted_sections=sections)())
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return cephcontext
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def emit_cephconf(upgrading=False):
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# Install ceph.conf as an alternative to support
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# co-existence with other charms that write this file
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charm_ceph_conf = "/var/lib/charm/{}/ceph.conf".format(service_name())
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mkdir(os.path.dirname(charm_ceph_conf), owner=ceph.ceph_user(),
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group=ceph.ceph_user())
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with open(charm_ceph_conf, 'w') as cephconf:
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context = get_ceph_context(upgrading)
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cephconf.write(render_template('ceph.conf', context))
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install_alternative('ceph.conf', '/etc/ceph/ceph.conf',
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charm_ceph_conf, 90)
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@hooks.hook('config-changed')
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@harden()
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def config_changed():
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# Determine whether vaultlocker is required and install
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if use_vaultlocker():
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installed = len(filter_installed_packages(['vaultlocker'])) == 0
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if not installed:
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add_source('ppa:openstack-charmers/vaultlocker')
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apt_update(fatal=True)
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apt_install('vaultlocker', fatal=True)
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# Check if an upgrade was requested
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check_for_upgrade()
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# Pre-flight checks
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if config('osd-format') not in ceph.DISK_FORMATS:
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log('Invalid OSD disk format configuration specified', level=ERROR)
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sys.exit(1)
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if config('prefer-ipv6'):
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assert_charm_supports_ipv6()
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sysctl_dict = config('sysctl')
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if sysctl_dict:
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create_sysctl(sysctl_dict, '/etc/sysctl.d/50-ceph-osd-charm.conf')
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e_mountpoint = config('ephemeral-unmount')
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if e_mountpoint and ceph.filesystem_mounted(e_mountpoint):
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umount(e_mountpoint)
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prepare_disks_and_activate()
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install_apparmor_profile()
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add_to_updatedb_prunepath(STORAGE_MOUNT_PATH)
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@hooks.hook('storage.real')
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def prepare_disks_and_activate():
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# NOTE: vault/vaultlocker preflight check
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vault_kv = vaultlocker.VaultKVContext(vaultlocker.VAULTLOCKER_BACKEND)
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context = vault_kv()
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if use_vaultlocker() and not vault_kv.complete:
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log('Deferring OSD preparation as vault not ready',
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level=DEBUG)
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return
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elif use_vaultlocker() and vault_kv.complete:
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log('Vault ready, writing vaultlocker configuration',
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level=DEBUG)
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vaultlocker.write_vaultlocker_conf(context)
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osd_journal = get_journal_devices()
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if not osd_journal.isdisjoint(set(get_devices())):
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raise ValueError('`osd-journal` and `osd-devices` options must not'
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'overlap.')
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log("got journal devs: {}".format(osd_journal), level=DEBUG)
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# pre-flight check of eligible device pristinity
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devices = get_devices()
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# if a device has been previously touched we need to consider it as
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# non-pristine. If it needs to be re-processed it has to be zapped
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# via the respective action which also clears the unitdata entry.
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db = kv()
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touched_devices = db.get('osd-devices', [])
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devices = [dev for dev in devices if dev not in touched_devices]
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log('Skipping osd devices previously processed by this unit: {}'
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.format(touched_devices))
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# filter osd-devices that are file system paths
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devices = [dev for dev in devices if dev.startswith('/dev')]
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# filter osd-devices that does not exist on this unit
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devices = [dev for dev in devices if os.path.exists(dev)]
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# filter osd-devices that are already mounted
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devices = [dev for dev in devices if not is_device_mounted(dev)]
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# filter osd-devices that are active bluestore devices
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devices = [dev for dev in devices
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if not ceph.is_active_bluestore_device(dev)]
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log('Checking for pristine devices: "{}"'.format(devices), level=DEBUG)
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if not all(ceph.is_pristine_disk(dev) for dev in devices):
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status_set('blocked',
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'Non-pristine devices detected, consult '
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'`list-disks`, `zap-disk` and `blacklist-*` actions.')
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return
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if ceph.is_bootstrapped():
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log('ceph bootstrapped, rescanning disks')
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emit_cephconf()
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bluestore = use_bluestore()
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for dev in get_devices():
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ceph.osdize(dev, config('osd-format'),
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osd_journal,
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config('ignore-device-errors'),
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config('osd-encrypt'),
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bluestore,
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config('osd-encrypt-keymanager'))
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# Make it fast!
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if config('autotune'):
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ceph.tune_dev(dev)
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ceph.start_osds(get_devices())
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# Notify MON cluster as to how many OSD's this unit bootstrapped
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# into the cluster
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for r_id in relation_ids('mon'):
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|
relation_set(
|
|
relation_id=r_id,
|
|
relation_settings={
|
|
'bootstrapped-osds': len(db.get('osd-devices', []))
|
|
}
|
|
)
|
|
|
|
|
|
def get_mon_hosts():
|
|
hosts = []
|
|
for relid in relation_ids('mon'):
|
|
for unit in related_units(relid):
|
|
addr = \
|
|
relation_get('ceph-public-address',
|
|
unit,
|
|
relid) or get_host_ip(
|
|
relation_get(
|
|
'private-address',
|
|
unit,
|
|
relid))
|
|
|
|
if addr:
|
|
hosts.append('{}:6789'.format(format_ipv6_addr(addr) or addr))
|
|
|
|
return sorted(hosts)
|
|
|
|
|
|
def get_fsid():
|
|
return get_conf('fsid')
|
|
|
|
|
|
def get_auth():
|
|
return get_conf('auth')
|
|
|
|
|
|
def get_conf(name):
|
|
for relid in relation_ids('mon'):
|
|
for unit in related_units(relid):
|
|
conf = relation_get(name,
|
|
unit, relid)
|
|
if conf:
|
|
return conf
|
|
return None
|
|
|
|
|
|
def get_devices():
|
|
devices = []
|
|
if config('osd-devices'):
|
|
for path in config('osd-devices').split(' '):
|
|
path = path.strip()
|
|
# Ensure that only block devices
|
|
# are considered for evaluation as block devices.
|
|
# This avoids issues with relative directories
|
|
# being passed via configuration, and ensures that
|
|
# the path to a block device provided by the user
|
|
# is used, rather than its target which may change
|
|
# between reboots in the case of bcache devices.
|
|
if is_block_device(path):
|
|
devices.append(path)
|
|
# Make sure its a device which is specified using an
|
|
# absolute path so that the current working directory
|
|
# or any relative path under this directory is not used
|
|
elif os.path.isabs(path):
|
|
devices.append(os.path.realpath(path))
|
|
|
|
# List storage instances for the 'osd-devices'
|
|
# store declared for this charm too, and add
|
|
# their block device paths to the list.
|
|
storage_ids = storage_list('osd-devices')
|
|
devices.extend((storage_get('location', s) for s in storage_ids))
|
|
|
|
# Filter out any devices in the action managed unit-local device blacklist
|
|
_blacklist = get_blacklist()
|
|
return [device for device in devices if device not in _blacklist]
|
|
|
|
|
|
@hooks.hook('mon-relation-changed',
|
|
'mon-relation-departed')
|
|
def mon_relation():
|
|
bootstrap_key = relation_get('osd_bootstrap_key')
|
|
upgrade_key = relation_get('osd_upgrade_key')
|
|
if get_fsid() and get_auth() and bootstrap_key:
|
|
log('mon has provided conf- scanning disks')
|
|
emit_cephconf()
|
|
ceph.import_osd_bootstrap_key(bootstrap_key)
|
|
ceph.import_osd_upgrade_key(upgrade_key)
|
|
prepare_disks_and_activate()
|
|
else:
|
|
log('mon cluster has not yet provided conf')
|
|
|
|
|
|
@hooks.hook('upgrade-charm.real')
|
|
@harden()
|
|
def upgrade_charm():
|
|
if get_fsid() and get_auth():
|
|
emit_cephconf()
|
|
apt_install(packages=filter_installed_packages(ceph.determine_packages()),
|
|
fatal=True)
|
|
install_udev_rules()
|
|
remap_resolved_targets()
|
|
|
|
|
|
def remap_resolved_targets():
|
|
'''Remap any previous fully resolved target devices to provided names'''
|
|
# NOTE(jamespage): Deal with any prior provided dev to
|
|
# target device resolution which occurred in prior
|
|
# releases of the charm - the user provided value
|
|
# should be used in preference to the target path
|
|
# to the block device as in some instances this
|
|
# is not consistent between reboots (bcache).
|
|
db = kv()
|
|
touched_devices = db.get('osd-devices', [])
|
|
osd_devices = get_devices()
|
|
for dev in osd_devices:
|
|
real_path = os.path.realpath(dev)
|
|
if real_path != dev and real_path in touched_devices:
|
|
log('Device {} already processed by charm using '
|
|
'actual device path {}, updating block device '
|
|
'usage with provided device path '
|
|
'and skipping'.format(dev,
|
|
real_path))
|
|
touched_devices.remove(real_path)
|
|
touched_devices.append(dev)
|
|
db.set('osd-devices', touched_devices)
|
|
db.flush()
|
|
|
|
|
|
@hooks.hook('nrpe-external-master-relation-joined',
|
|
'nrpe-external-master-relation-changed')
|
|
def update_nrpe_config():
|
|
# python-dbus is used by check_upstart_job
|
|
apt_install('python3-dbus')
|
|
hostname = nrpe.get_nagios_hostname()
|
|
current_unit = nrpe.get_nagios_unit_name()
|
|
nrpe_setup = nrpe.NRPE(hostname=hostname)
|
|
nrpe_setup.add_check(
|
|
shortname='ceph-osd',
|
|
description='process check {%s}' % current_unit,
|
|
check_cmd=('/bin/cat /var/lib/ceph/osd/ceph-*/whoami |'
|
|
'xargs -I@ status ceph-osd id=@ && exit 0 || exit 2')
|
|
)
|
|
nrpe_setup.write()
|
|
|
|
|
|
@hooks.hook('secrets-storage-relation-joined')
|
|
def secrets_storage_joined(relation_id=None):
|
|
relation_set(relation_id=relation_id,
|
|
secret_backend='charm-vaultlocker',
|
|
isolated=True,
|
|
access_address=get_relation_ip('secrets-storage'),
|
|
hostname=socket.gethostname())
|
|
|
|
|
|
@hooks.hook('secrets-storage-relation-changed')
|
|
def secrets_storage_changed():
|
|
vault_ca = relation_get('vault_ca')
|
|
if vault_ca:
|
|
vault_ca = base64.decodestring(json.loads(vault_ca).encode())
|
|
write_file('/usr/local/share/ca-certificates/vault-ca.crt',
|
|
vault_ca, perms=0o644)
|
|
subprocess.check_call(['update-ca-certificates', '--fresh'])
|
|
prepare_disks_and_activate()
|
|
|
|
|
|
VERSION_PACKAGE = 'ceph-common'
|
|
|
|
|
|
def assess_status():
|
|
"""Assess status of current unit"""
|
|
# check to see if the unit is paused.
|
|
application_version_set(get_upstream_version(VERSION_PACKAGE))
|
|
if is_unit_upgrading_set():
|
|
status_set("blocked",
|
|
"Ready for do-release-upgrade and reboot. "
|
|
"Set complete when finished.")
|
|
return
|
|
if is_unit_paused_set():
|
|
status_set('maintenance',
|
|
"Paused. Use 'resume' action to resume normal service.")
|
|
return
|
|
# Check for mon relation
|
|
if len(relation_ids('mon')) < 1:
|
|
status_set('blocked', 'Missing relation: monitor')
|
|
return
|
|
|
|
# Check for monitors with presented addresses
|
|
# Check for bootstrap key presentation
|
|
monitors = get_mon_hosts()
|
|
if len(monitors) < 1 or not get_conf('osd_bootstrap_key'):
|
|
status_set('waiting', 'Incomplete relation: monitor')
|
|
return
|
|
|
|
# Check for vault
|
|
if use_vaultlocker():
|
|
if not relation_ids('secrets-storage'):
|
|
status_set('blocked', 'Missing relation: vault')
|
|
return
|
|
if not vaultlocker.vault_relation_complete():
|
|
status_set('waiting', 'Incomplete relation: vault')
|
|
return
|
|
|
|
# Check for OSD device creation parity i.e. at least some devices
|
|
# must have been presented and used for this charm to be operational
|
|
(prev_status, prev_message) = status_get()
|
|
running_osds = ceph.get_running_osds()
|
|
if not prev_message.startswith('Non-pristine'):
|
|
if not running_osds:
|
|
status_set('blocked',
|
|
'No block devices detected using current configuration')
|
|
else:
|
|
status_set('active',
|
|
'Unit is ready ({} OSD)'.format(len(running_osds)))
|
|
|
|
|
|
@hooks.hook('update-status')
|
|
@harden()
|
|
def update_status():
|
|
log('Updating status.')
|
|
|
|
|
|
@hooks.hook('pre-series-upgrade')
|
|
def pre_series_upgrade():
|
|
log("Running prepare series upgrade hook", "INFO")
|
|
# NOTE: The Ceph packages handle the series upgrade gracefully.
|
|
# In order to indicate the step of the series upgrade process for
|
|
# administrators and automated scripts, the charm sets the paused and
|
|
# upgrading states.
|
|
set_unit_paused()
|
|
set_unit_upgrading()
|
|
|
|
|
|
@hooks.hook('post-series-upgrade')
|
|
def post_series_upgrade():
|
|
log("Running complete series upgrade hook", "INFO")
|
|
# In order to indicate the step of the series upgrade process for
|
|
# administrators and automated scripts, the charm clears the paused and
|
|
# upgrading states.
|
|
clear_unit_paused()
|
|
clear_unit_upgrading()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
try:
|
|
hooks.execute(sys.argv)
|
|
except UnregisteredHookError as e:
|
|
log('Unknown hook {} - skipping.'.format(e))
|
|
assess_status()
|