420 lines
14 KiB
Python
420 lines
14 KiB
Python
#!/usr/bin/env python3
|
|
|
|
# CehpInstance.py - Class implementing a PVC node Ceph instance
|
|
# Part of the Parallel Virtual Cluster (PVC) system
|
|
#
|
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
#
|
|
###############################################################################
|
|
|
|
import time
|
|
import ast
|
|
import json
|
|
import psutil
|
|
|
|
import pvcd.log as log
|
|
import pvcd.zkhandler as zkhandler
|
|
import pvcd.common as common
|
|
|
|
class CephOSDInstance(object):
|
|
def __init__(self, zk_conn, this_node, osd_id):
|
|
self.zk_conn = zk_conn
|
|
self.this_node = this_node
|
|
self.osd_id = osd_id
|
|
self.node = None
|
|
self.size = None
|
|
self.stats = dict()
|
|
|
|
@self.zk_conn.DataWatch('/ceph/osds/{}/node'.format(self.osd_id))
|
|
def watch_osd_node(data, stat, event=''):
|
|
if event and event.type == 'DELETED':
|
|
# The key has been deleted after existing before; terminate this watcher
|
|
# because this class instance is about to be reaped in Daemon.py
|
|
return False
|
|
|
|
try:
|
|
data = data.decode('ascii')
|
|
except AttributeError:
|
|
data = ''
|
|
|
|
if data and data != self.node:
|
|
self.node = data
|
|
|
|
@self.zk_conn.DataWatch('/ceph/osds/{}/stats'.format(self.osd_id))
|
|
def watch_osd_stats(data, stat, event=''):
|
|
if event and event.type == 'DELETED':
|
|
# The key has been deleted after existing before; terminate this watcher
|
|
# because this class instance is about to be reaped in Daemon.py
|
|
return False
|
|
|
|
try:
|
|
data = data.decode('ascii')
|
|
except AttributeError:
|
|
data = ''
|
|
|
|
if data and data != self.stats:
|
|
self.stats = json.loads(data)
|
|
|
|
def add_osd(zk_conn, logger, node, device, weight):
|
|
# We are ready to create a new OSD on this node
|
|
logger.out('Creating new OSD disk', state='i')
|
|
try:
|
|
# 1. Create an OSD; we do this so we know what ID will be gen'd
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd create')
|
|
if retcode:
|
|
print('ceph osd create')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
osd_id = stdout.rstrip()
|
|
|
|
# 2. Remove that newly-created OSD
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd rm {}'.format(osd_id))
|
|
if retcode:
|
|
print('ceph osd rm')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 3. Create the OSD for real
|
|
retcode, stdout, stderr = common.run_os_command(
|
|
'ceph-volume lvm prepare --bluestore --data {device}'.format(
|
|
osdid=osd_id,
|
|
device=device
|
|
)
|
|
)
|
|
if retcode:
|
|
print('ceph-volume lvm prepare')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 4. Activate the OSD
|
|
retcode, stdout, stderr = common.run_os_command(
|
|
'ceph-volume lvm activate --bluestore {osdid}'.format(
|
|
osdid=osd_id
|
|
)
|
|
)
|
|
if retcode:
|
|
print('ceph-volume lvm activate')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 5. Add it to the crush map
|
|
retcode, stdout, stderr = common.run_os_command(
|
|
'ceph osd crush add osd.{osdid} {weight} root=default host={node}'.format(
|
|
osdid=osd_id,
|
|
weight=weight,
|
|
node=node
|
|
)
|
|
)
|
|
if retcode:
|
|
print('ceph osd crush add')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
time.sleep(0.5)
|
|
|
|
# 6. Verify it started
|
|
retcode, stdout, stderr = common.run_os_command(
|
|
'systemctl status ceph-osd@{osdid}'.format(
|
|
osdid=osd_id
|
|
)
|
|
)
|
|
if retcode:
|
|
print('systemctl status')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 7. Add the new OSD to the list
|
|
zkhandler.writedata(zk_conn, {
|
|
'/ceph/osds/{}'.format(osd_id): '',
|
|
'/ceph/osds/{}/node'.format(osd_id): node,
|
|
'/ceph/osds/{}/device'.format(osd_id): device,
|
|
'/ceph/osds/{}/stats'.format(osd_id): '{}'
|
|
})
|
|
|
|
# Log it
|
|
logger.out('Created new OSD disk with ID {}'.format(osd_id), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to create new OSD disk: {}'.format(e), state='e')
|
|
return False
|
|
|
|
def remove_osd(zk_conn, logger, osd_id, osd_obj):
|
|
logger.out('Removing OSD disk {}'.format(osd_id), state='i')
|
|
try:
|
|
# 1. Verify the OSD is present
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd ls')
|
|
osd_list = stdout.split('\n')
|
|
if not osd_id in osd_list:
|
|
logger.out('Could not find OSD {} in the cluster'.format(osd_id), state='e')
|
|
return True
|
|
|
|
# 1. Set the OSD out so it will flush
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd out {}'.format(osd_id))
|
|
if retcode:
|
|
print('ceph osd out')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 2. Wait for the OSD to flush
|
|
osd_string = str()
|
|
while True:
|
|
retcode, stdout, stderr = common.run_os_command('ceph pg dump osds --format json')
|
|
dump_string = json.loads(stdout)
|
|
for osd in dump_string:
|
|
if str(osd['osd']) == osd_id:
|
|
osd_string = osd
|
|
num_pgs = osd_string['num_pgs']
|
|
if num_pgs > 0:
|
|
time.sleep(5)
|
|
else:
|
|
break
|
|
|
|
# 3. Stop the OSD process and wait for it to be terminated
|
|
retcode, stdout, stderr = common.run_os_command('systemctl stop ceph-osd@{}'.format(osd_id))
|
|
if retcode:
|
|
print('systemctl stop')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# FIXME: There has to be a better way to do this /shrug
|
|
while True:
|
|
is_osd_up = False
|
|
# Find if there is a process named ceph-osd with arg '--id {id}'
|
|
for p in psutil.process_iter(attrs=['name', 'cmdline']):
|
|
if 'ceph-osd' == p.info['name'] and '--id {}'.format(osd_id) in ' '.join(p.info['cmdline']):
|
|
is_osd_up = True
|
|
# If there isn't, continue
|
|
if not is_osd_up:
|
|
break
|
|
|
|
# 4. Delete OSD from ZK
|
|
zkhandler.deletekey(zk_conn, '/ceph/osds/{}'.format(osd_id))
|
|
|
|
# 5. Determine the block devices
|
|
retcode, stdout, stderr = common.run_os_command('readlink /var/lib/ceph/osd/ceph-{}/block'.format(osd_id))
|
|
vg_name = stdout.split('/')[-2] # e.g. /dev/ceph-<uuid>/osd-block-<uuid>
|
|
retcode, stdout, stderr = common.run_os_command('vgs --separator , --noheadings -o pv_name {}'.format(vg_name))
|
|
pv_block = stdout
|
|
|
|
# 6. Zap the volumes
|
|
retcode, stdout, stderr = common.run_os_command('ceph-volume lvm zap --destroy {}'.format(pv_block))
|
|
if retcode:
|
|
print('ceph-volume lvm zap')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 7. Purge the OSD from Ceph
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd purge {} --yes-i-really-mean-it'.format(osd_id))
|
|
if retcode:
|
|
print('ceph osd purge')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# Log it
|
|
logger.out('Purged OSD disk with ID {}'.format(osd_id), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to purge OSD disk with ID {}: {}'.format(osd_id, e), state='e')
|
|
return False
|
|
|
|
def in_osd(zk_conn, logger, osd_id):
|
|
# We are ready to create a new pool on this node
|
|
logger.out('Setting OSD {} in'.format(osd_id), state='i')
|
|
try:
|
|
# 1. Set it in
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd in {}'.format(osd_id))
|
|
if retcode:
|
|
print('ceph osd in')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# Log it
|
|
logger.out('Set OSD {} in'.format(osd_id), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to set OSD {} in: {}'.format(osd_id, e), state='e')
|
|
return False
|
|
|
|
def out_osd(zk_conn, logger, osd_id):
|
|
# We are ready to create a new pool on this node
|
|
logger.out('Settoutg OSD {} out'.format(osd_id), state='i')
|
|
try:
|
|
# 1. Set it out
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd out {}'.format(osd_id))
|
|
if retcode:
|
|
proutt('ceph osd out')
|
|
proutt(stdout)
|
|
proutt(stderr)
|
|
raise
|
|
|
|
# Log it
|
|
logger.out('Set OSD {} out'.format(osd_id), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to set OSD {} out: {}'.format(osd_id, e), state='e')
|
|
return False
|
|
|
|
def set_property(zk_conn, logger, option):
|
|
# We are ready to create a new pool on this node
|
|
logger.out('Setting OSD property {}'.format(option), state='i')
|
|
try:
|
|
# 1. Set it in
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd set {}'.format(option))
|
|
if retcode:
|
|
prsett('ceph osd set')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# Log it
|
|
logger.out('Set OSD property {}'.format(option), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to set OSD property {}: {}'.format(option, e), state='e')
|
|
return False
|
|
|
|
def unset_property(zk_conn, logger, option):
|
|
# We are ready to create a new pool on this node
|
|
logger.out('Unsetting OSD property {}'.format(option), state='i')
|
|
try:
|
|
# 1. Set it in
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd unset {}'.format(option))
|
|
if retcode:
|
|
prunsett('ceph osd unset')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# Log it
|
|
logger.out('Unset OSD property {}'.format(option), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to unset OSD property {}: {}'.format(option, e), state='e')
|
|
return False
|
|
|
|
class CephPoolInstance(object):
|
|
def __init__(self, zk_conn, this_node, name):
|
|
self.zk_conn = zk_conn
|
|
self.this_node = this_node
|
|
self.name = name
|
|
self.pgs = ''
|
|
self.stats = dict()
|
|
|
|
@self.zk_conn.DataWatch('/ceph/pools/{}/pgs'.format(self.name))
|
|
def watch_pool_node(data, stat, event=''):
|
|
if event and event.type == 'DELETED':
|
|
# The key has been deleted after existing before; terminate this watcher
|
|
# because this class instance is about to be reaped in Daemon.py
|
|
return False
|
|
|
|
try:
|
|
data = data.decode('ascii')
|
|
except AttributeError:
|
|
data = ''
|
|
|
|
if data and data != self.pgs:
|
|
self.pgs = data
|
|
|
|
@self.zk_conn.DataWatch('/ceph/pools/{}/stats'.format(self.name))
|
|
def watch_pool_stats(data, stat, event=''):
|
|
if event and event.type == 'DELETED':
|
|
# The key has been deleted after existing before; terminate this watcher
|
|
# because this class instance is about to be reaped in Daemon.py
|
|
return False
|
|
|
|
try:
|
|
data = data.decode('ascii')
|
|
except AttributeError:
|
|
data = ''
|
|
|
|
if data and data != self.stats:
|
|
self.stats = json.loads(data)
|
|
|
|
def add_pool(zk_conn, logger, name, pgs):
|
|
# We are ready to create a new pool on this node
|
|
logger.out('Creating new RBD pool {}'.format(name), state='i')
|
|
try:
|
|
# 1. Create the pool
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd pool create {} {} replicated'.format(name, pgs))
|
|
if retcode:
|
|
print('ceph osd pool create')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 2. Enable RBD application
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd pool application enable {} rbd'.format(name))
|
|
if retcode:
|
|
print('ceph osd pool application enable')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# 3. Add the new pool to ZK
|
|
zkhandler.writedata(zk_conn, {
|
|
'/ceph/pools/{}'.format(name): '',
|
|
'/ceph/pools/{}/pgs'.format(name): pgs,
|
|
'/ceph/pools/{}/stats'.format(name): '{}'
|
|
})
|
|
|
|
# Log it
|
|
logger.out('Created new RBD pool {}'.format(name), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to create new RBD pool {}: {}'.format(name, e), state='e')
|
|
return False
|
|
|
|
def remove_pool(zk_conn, logger, name):
|
|
# We are ready to create a new pool on this node
|
|
logger.out('Removing RBD pool {}'.format(name), state='i')
|
|
try:
|
|
# Delete pool from ZK
|
|
zkhandler.deletekey(zk_conn, '/ceph/pools/{}'.format(name))
|
|
|
|
# Remove the pool
|
|
retcode, stdout, stderr = common.run_os_command('ceph osd pool rm {pool} {pool} --yes-i-really-really-mean-it'.format(pool=name))
|
|
if retcode:
|
|
print('ceph osd pool rm')
|
|
print(stdout)
|
|
print(stderr)
|
|
raise
|
|
|
|
# Log it
|
|
logger.out('Removed RBD pool {}'.format(name), state='o')
|
|
return True
|
|
except Exception as e:
|
|
# Log it
|
|
logger.out('Failed to remove RBD pool {}: {}'.format(name, e), state='e')
|
|
return False
|
|
|