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#!/usr/bin/python
import argparse
import errno
import json
import logging
import os
import subprocess
import sys
import time
log = logging.getLogger(os.path.basename(sys.argv[0]))
QUORUM_STATES = ['leader', 'peon']
def wait_for_quorum(cluster, mon_id):
while True:
p = subprocess.Popen(
args=[
'ceph',
'--cluster={cluster}'.format(cluster=cluster),
'--admin-daemon=/var/run/ceph/{cluster}-mon.{mon_id}.asok'.format(
cluster=cluster,
mon_id=mon_id,
),
'mon_status',
],
stdout=subprocess.PIPE,
)
out = p.stdout.read()
returncode = p.wait()
if returncode != 0:
log.info('ceph-mon admin socket not ready yet.')
time.sleep(1)
continue
data = json.loads(out)
state = data['state']
if state not in QUORUM_STATES:
log.info('ceph-mon is not in quorum: %r', state)
time.sleep(1)
continue
break
def get_key(cluster, mon_id):
path = '/etc/ceph/{cluster}.client.admin.keyring'.format(
cluster=cluster,
)
if os.path.exists(path):
log.info('Key exists already: %s', path)
return
tmp = '{path}.{pid}.tmp'.format(
path=path,
pid=os.getpid(),
)
while True:
try:
with file(tmp, 'w') as f:
os.fchmod(f.fileno(), 0600)
log.info('Talking to monitor...')
returncode = subprocess.call(
args=[
'ceph',
'--cluster={cluster}'.format(cluster=cluster),
'--name=mon.',
'--keyring=/var/lib/ceph/mon/{cluster}-{mon_id}/keyring'.format(
cluster=cluster,
mon_id=mon_id,
),
'auth',
'get-or-create',
'client.admin',
'mon', 'allow *',
'osd', 'allow *',
'mds', 'allow',
],
stdout=f,
)
if returncode != 0:
log.info('Cannot get or create admin key')
time.sleep(1)
continue
os.rename(tmp, path)
break
finally:
try:
os.unlink(tmp)
except OSError as e:
if e.errno == errno.ENOENT:
pass
else:
raise
def bootstrap_key(cluster, type_, caps):
path = '/var/lib/ceph/bootstrap-{type}/{cluster}.keyring'.format(
type=type_,
cluster=cluster,
)
if os.path.exists(path):
log.info('Key exists already: %s', path)
return
tmp = '{path}.{pid}.tmp'.format(
path=path,
pid=os.getpid(),
)
args = [
'ceph',
'--cluster={cluster}'.format(cluster=cluster),
'auth',
'get-or-create',
'client.bootstrap-{type}'.format(type=type_),
]
for subsystem, subcaps in caps.iteritems():
args.extend([
subsystem,
'; '.join(subcaps),
])
while True:
try:
with file(tmp, 'w') as f:
os.fchmod(f.fileno(), 0600)
log.info('Talking to monitor...')
returncode = subprocess.call(
args=args,
stdout=f,
)
if returncode != 0:
log.info('Cannot get or create bootstrap key for %s', type_)
time.sleep(1)
continue
os.rename(tmp, path)
break
finally:
try:
os.unlink(tmp)
except OSError as e:
if e.errno == errno.ENOENT:
pass
else:
raise
def parse_args():
parser = argparse.ArgumentParser(
description='Create Ceph client.admin key when ceph-mon is ready',
)
parser.add_argument(
'-v', '--verbose',
action='store_true', default=None,
help='be more verbose',
)
parser.add_argument(
'--cluster',
metavar='NAME',
help='name of the cluster',
)
parser.add_argument(
'--id', '-i',
metavar='ID',
help='id of a ceph-mon that is coming up',
required=True,
)
parser.set_defaults(
cluster='ceph',
)
parser.set_defaults(
# we want to hold on to this, for later
prog=parser.prog,
)
args = parser.parse_args()
return args
def main():
args = parse_args()
loglevel = logging.INFO
if args.verbose:
loglevel = logging.DEBUG
logging.basicConfig(
level=loglevel,
)
wait_for_quorum(cluster=args.cluster, mon_id=args.id)
get_key(cluster=args.cluster, mon_id=args.id)
bootstrap_key(
cluster=args.cluster,
type_='osd',
caps=dict(
mon=[
'allow command osd create ...',
'allow command osd crush set ...',
r'allow command auth add * osd allow\ * mon allow\ rwx',
'allow command mon getmap',
],
),
)
if __name__ == '__main__':
main()
|
