def launch(command):
# terminate the child process when the parent dies
try:
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
except:
pass
args = shlex.split(command)
os.execv(args[0], args)
def launch(command):
# terminate the child process when the parent dies
try:
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
except:
pass
args = shlex.split(command)
os.execv(args[0], args)
def exit_when_parent_or_child_dies(sig):
gid = os.getpgrp()
signal(SIGCHLD, make_child_die_signal_handler(gid))
try:
from prctl import prctl, PDEATHSIG
signal(SIGHUP, make_quit_signal_handler(gid))
# give me SIGHUP if my parent dies
prctl(PDEATHSIG, SIGHUP)
pause()
except ImportError:
# fallback to polling status of parent
while True:
if os.getppid() == 1:
# parent died, suicide
signal(SIGTERM, SIG_DFL)
os.killpg(gid, sig)
sys.exit()
time.sleep(5)
def exit_when_parent_or_child_dies(sig):
gid = os.getpgrp()
signal(SIGCHLD, make_child_die_signal_handler(gid))
try:
from prctl import prctl, PDEATHSIG
signal(SIGHUP, make_quit_signal_handler(gid))
# give me SIGHUP if my parent dies
prctl(PDEATHSIG, SIGHUP)
pause()
except ImportError:
# fallback to polling status of parent
while True:
if os.getppid() == 1:
# parent died, suicide
signal(SIGTERM, SIG_DFL)
os.killpg(gid, sig)
sys.exit()
time.sleep(5)
def main(args):
syslog.openlog("queue-manager", syslog.LOG_PID)
pdlogs.STARTUP.log()
try:
arguments = docopt(__doc__, argv=args)
except DocoptExit:
pdlogs.EXITING_BAD_CONFIG.log()
raise
local_ip = arguments['--local-ip']
local_site = arguments['--local-site']
etcd_key = arguments['--etcd-key']
node_type = arguments['--node-type']
log_dir = arguments['--log-directory']
log_level = LOG_LEVELS.get(arguments['--log-level'], logging.DEBUG)
wait_plugin_complete = arguments['--wait-plugin-complete']
stdout_err_log = os.path.join(log_dir, "queue-manager.output.log")
if not arguments['--foreground']:
utils.daemonize(stdout_err_log)
# Process names are limited to 15 characters, so abbreviate
prctl.prctl(prctl.NAME, "cw-queue-mgr")
logging_config.configure_logging(log_level, log_dir, "queue-manager", show_thread=True)
# urllib3 logs a WARNING log whenever it recreates a connection, but our
# etcd usage does this frequently (to allow watch timeouts), so deliberately
# ignore this log
urllib_logger = logging.getLogger('urllib3')
urllib_logger.setLevel(logging.ERROR)
utils.install_sigusr1_handler("queue-manager")
# Drop a pidfile. We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(arguments['--pidfile']) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
plugins_dir = "/usr/share/clearwater/clearwater-queue-manager/plugins/"
plugins = load_plugins_in_dir(plugins_dir,
PluginParams(wait_plugin_complete=wait_plugin_complete))
plugins.sort(key=lambda x: x.key())
synchronizers = []
threads = []
for plugin in plugins:
syncer = EtcdSynchronizer(plugin, local_ip, local_site, etcd_key, node_type)
syncer.start_thread()
synchronizers.append(syncer)
threads.append(syncer.thread)
_log.info("Loaded plugin %s" % plugin)
utils.install_sigterm_handler(synchronizers)
while any([thr.isAlive() for thr in threads]):
for thr in threads:
if thr.isAlive():
thr.join(1)
while not utils.should_quit:
sleep(1)
_log.info("Clearwater Queue Manager shutting down")
pdlogs.EXITING.log()
syslog.closelog()
def main(args):
syslog.openlog("cluster-manager", syslog.LOG_PID)
pdlogs.STARTUP.log()
try:
arguments = docopt(__doc__, argv=args)
except DocoptExit:
pdlogs.EXITING_BAD_CONFIG.log()
raise
mgmt_ip = arguments['--mgmt-local-ip']
sig_ip = arguments['--sig-local-ip']
local_site_name = arguments['--local-site']
remote_site_name = arguments['--remote-site']
remote_cassandra_seeds = arguments['--remote-cassandra-seeds']
if remote_cassandra_seeds:
remote_cassandra_seeds = remote_cassandra_seeds.split(',')
else:
remote_cassandra_seeds = []
signaling_namespace = arguments.get('--signaling-namespace')
local_uuid = UUID(arguments['--uuid'])
etcd_key = arguments.get('--etcd-key')
etcd_cluster_key = arguments.get('--etcd-cluster-key')
cluster_manager_enabled = arguments['--cluster-manager-enabled']
log_dir = arguments['--log-directory']
log_level = LOG_LEVELS.get(arguments['--log-level'], logging.DEBUG)
stdout_err_log = os.path.join(log_dir, "cluster-manager.output.log")
# Check that there's an etcd_cluster_key value passed to the cluster
# manager
if etcd_cluster_key == "":
# The etcd_cluster_key isn't valid, and possibly get weird entries in
# the etcd database if we allow the cluster_manager to start
pdlogs.EXITING_MISSING_ETCD_CLUSTER_KEY.log()
exit(1)
if not arguments['--foreground']:
utils.daemonize(stdout_err_log)
# Process names are limited to 15 characters, so abbreviate
prctl.prctl(prctl.NAME, "cw-cluster-mgr")
logging_config.configure_logging(log_level,
log_dir,
"cluster-manager",
show_thread=True)
# urllib3 logs a WARNING log whenever it recreates a connection, but our
# etcd usage does this frequently (to allow watch timeouts), so deliberately
# ignore this log
urllib_logger = logging.getLogger('urllib3')
urllib_logger.setLevel(logging.ERROR)
utils.install_sigusr1_handler("cluster-manager")
# Drop a pidfile. We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(
arguments['--pidfile']) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
plugins_dir = "/usr/share/clearwater/clearwater-cluster-manager/plugins/"
plugins = load_plugins_in_dir(
plugins_dir,
PluginParams(ip=sig_ip,
mgmt_ip=mgmt_ip,
local_site=local_site_name,
remote_site=remote_site_name,
remote_cassandra_seeds=remote_cassandra_seeds,
signaling_namespace=signaling_namespace,
uuid=local_uuid,
etcd_key=etcd_key,
etcd_cluster_key=etcd_cluster_key))
plugins.sort(key=lambda x: x.key())
plugins_to_use = []
files = []
skip = False
for plugin in plugins:
for plugin_file in plugin.files():
if plugin_file in files:
_log.info("Skipping plugin {} because {} "
"is already managed by another plugin".format(
plugin, plugin_file))
skip = True
if not skip:
plugins_to_use.append(plugin)
files.extend(plugin.files())
synchronizers = []
threads = []
if cluster_manager_enabled == "N":
# Don't start any threads as we don't want the cluster manager to run
pdlogs.DO_NOT_START.log()
elif etcd_cluster_key == "DO_NOT_CLUSTER":
# Don't start any threads as we don't want this box to cluster
pdlogs.DO_NOT_CLUSTER.log()
else:
for plugin in plugins_to_use:
syncer = EtcdSynchronizer(plugin, sig_ip, etcd_ip=mgmt_ip)
syncer.start_thread()
synchronizers.append(syncer)
threads.append(syncer.thread)
_log.info("Loaded plugin %s" % plugin)
install_sigquit_handler(synchronizers)
install_sigterm_handler(synchronizers)
while any([thread.isAlive() for thread in threads]):
for thread in threads:
if thread.isAlive():
thread.join(1)
_log.info("No plugin threads running, waiting for a SIGTERM or SIGQUIT")
while not should_quit:
sleep(1)
_log.info("Quitting")
_log.debug("%d threads outstanding at exit" % activeCount())
pdlogs.EXITING.log()
syslog.closelog()
def bind():
# terminate the child process when the parent dies
try:
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
except:
pass
def standalone():
"""
Initializes Tornado and our application. Forks worker processes to handle
requests. Does not return until all child processes exit normally.
"""
# Parse arguments
parser = argparse.ArgumentParser(description="Ellis web server")
parser.add_argument("--background",
action="store_true",
help="Detach and run server in background")
parser.add_argument("--log-level", default=2, type=int)
args = parser.parse_args()
prctl.prctl(prctl.NAME, "ellis")
# We don't initialize logging until we fork because we want each child to
# have its own logging and it's awkward to reconfigure logging that is
# defined by the parent.
application = create_application()
if args.background:
# Get a new logfile, rotating the old one if present.
err_log_name = os.path.join(settings.LOGS_DIR,
settings.LOG_FILE_PREFIX + "-err.log")
try:
os.rename(err_log_name, err_log_name + ".old")
except OSError:
pass
# Fork into background.
utils.daemonize(err_log_name)
utils.install_sigusr1_handler(settings.LOG_FILE_PREFIX)
# Drop a pidfile. We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(settings.PID_FILE) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
# Only run one process, not one per core - we don't need the performance
# and this keeps everything in one log file
prctl.prctl(prctl.NAME, "ellis")
logging_config.configure_logging(
utils.map_clearwater_log_level(args.log_level), settings.LOGS_DIR,
settings.LOG_FILE_PREFIX)
_log.info("Ellis process starting up")
connection.init_connection()
http_server = httpserver.HTTPServer(application)
unix_socket = bind_unix_socket(settings.HTTP_UNIX, 0666)
http_server.add_socket(unix_socket)
homestead.ping()
background.start_background_worker_io_loop()
io_loop = tornado.ioloop.IOLoop.instance()
io_loop.start()
# file/open call # fileobject.open = _fo_open fileobject.close = _fo_close def nowait(): '''nowait NOTE: GLOBAL SIGNAL CHANGE! Do not wait for the terminated/exiting fileobject, since this can block. To prevent the processes from becoming unreaped zombies we disable the SIGCHILD signal. (see man wait(2)) ''' global NOWAIT NOWAIT = True signal.signal(signal.SIGCHLD, signal.SIG_IGN) if __name__ == '__main__': import prctl prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM) handler = FileObjectHandler(sys.stdin, sys.stdout) value = handler.run() sys.exit(value) # # end..
def bind():
# terminate the child process when the parent dies
try:
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
except:
pass
try:
resource.setrlimit(resource.RLIMIT_NOFILE, (max_fd, max_fd))
except ValueError, e:
if not os.getuid():
print 'MAX FD error: %s, %d' % (e.args[0], max_fd)
try:
resource.setrlimit(resource.RLIMIT_CORE, (-1, -1))
except ValueError, e:
print 'CORE size error:', e
if not os.getuid():
os.setgid(1)
os.setuid(1)
try:
prctl.prctl(prctl.DUMPABLE, 1)
except (AttributeError, ValueError, prctl.PrctlError), e:
print 'PRCTL DUMPABLE error:', e
if logdir and pidfile:
pidfile = logdir + '/' + pidfile
try:
fd = open(pidfile, 'w')
except IOError, e:
print 'IO error: %s' % (e.args[1])
return None
else:
fd.write('%d' % os.getpid())
fd.close()
if logdir and logfile:
try:
resource.setrlimit(resource.RLIMIT_NOFILE, (max_fd, max_fd))
except ValueError, e:
if not os.getuid():
print 'MAX FD error: %s, %d' % (e.args[0], max_fd)
try:
resource.setrlimit(resource.RLIMIT_CORE, (-1, -1))
except ValueError, e:
print 'CORE size error:', e
if not os.getuid():
os.setgid(1)
os.setuid(1)
try:
prctl.prctl(prctl.DUMPABLE, 1)
except (AttributeError, ValueError, prctl.PrctlError), e:
print 'PRCTL DUMPABLE error:', e
if logdir and pidfile:
pidfile = logdir + '/' + pidfile
try:
fd = open(pidfile, 'w')
except IOError, e:
print 'IO error: %s' % (e.args[1])
return None
else:
fd.write('%d' % os.getpid())
fd.close()
if logdir and logfile:
import datetime
import StringIO
import aespckfile
from PIL import Image
try:
import simplejson as json
except:
import json
sys.path.append((os.path.dirname(__file__) or ".") + "/../")
import config
try:
import prctl
prctl.prctl(prctl.DUMPABLE, 0)
except ImportError:
pass
locale.setlocale(locale.LC_ALL, '')
parsedate = lambda x: datetime.datetime.strptime(x,"%Y-%m-%d").date()
prettyformat = lambda x: locale.currency(float(x)/100, grouping=True)
digitre = re.compile("^#?\d{2,}$")
def imgtrim(img):
"""This will trim any whitespace around the image
http://stackoverflow.com/questions/9396312/use-python-pil-or-similar-to-shrink-whitespace"""
im = Image.open(StringIO.StringIO(img))
pix = numpy.asarray(im)
def main():
"""Main entry point for Glances.
Select the mode (standalone, client or server)
Run it...
"""
# Log Glances and PSutil version
logger.info('Start Glances {0}'.format(__version__))
logger.info('{0} {1} and PSutil {2} detected'.format(
platform.python_implementation(), platform.python_version(),
__psutil_version))
# Share global var
global core, standalone, client, server, webserver
# Create the Glances main instance
core = GlancesMain()
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
# Catch the CTRL-C signal
signal.signal(signal.SIGINT, __signal_handler)
# Glances can be ran in standalone, client or server mode
if core.is_standalone():
logger.info("Start standalone mode")
# Import the Glances standalone module
from glances.core.glances_standalone import GlancesStandalone
# Init the standalone mode
standalone = GlancesStandalone(config=core.get_config(),
args=core.get_args())
# Start the standalone (CLI) loop
standalone.serve_forever()
elif core.is_client():
if core.is_client_browser():
logger.info("Start client mode (browser)")
# Import the Glances client browser module
from glances.core.glances_client_browser import GlancesClientBrowser
# Init the client
client = GlancesClientBrowser(config=core.get_config(),
args=core.get_args())
else:
logger.info("Start client mode")
# Import the Glances client module
from glances.core.glances_client import GlancesClient
# Init the client
client = GlancesClient(config=core.get_config(),
args=core.get_args())
# Test if client and server are in the same major version
if not client.login():
logger.critical(
"The server version is not compatible with the client")
sys.exit(2)
# Start the client loop
client.serve_forever()
# Shutdown the client
client.end()
elif core.is_server():
logger.info("Start server mode")
# Import the Glances server module
from glances.core.glances_server import GlancesServer
args = core.get_args()
server = GlancesServer(cached_time=core.cached_time,
config=core.get_config(),
args=args)
print('Glances server is running on {0}:{1}'.format(
args.bind_address, args.port))
# Set the server login/password (if -P/--password tag)
if args.password != "":
server.add_user(args.username, args.password)
# Start the server loop
server.serve_forever()
# Shutdown the server?
server.server_close()
elif core.is_webserver():
logger.info("Start web server mode")
# Import the Glances web server module
from glances.core.glances_webserver import GlancesWebServer
# Init the web server mode
webserver = GlancesWebServer(config=core.get_config(),
args=core.get_args())
# Start the web server loop
webserver.serve_forever()
def standalone():
"""
Initializes Tornado and our application. Forks worker processes to handle
requests. Does not return until all child processes exit normally.
"""
# Hack to work-around issue with Cyclone and UNIX domain sockets
twisted.internet.address.UNIXAddress.host = "localhost"
# Parse arguments
parser = argparse.ArgumentParser(description="Crest web server")
parser.add_argument("--background",
action="store_true",
help="Detach and run server in background")
parser.add_argument("--signaling-namespace",
action="store_true",
help="Server running in signaling namespace")
parser.add_argument("--worker-processes", default=1, type=int)
parser.add_argument("--shared-http-tcp-fd", default=None, type=int)
parser.add_argument("--process-id", default=0, type=int)
parser.add_argument("--log-level", default=2, type=int)
args = parser.parse_args()
# Set process name.
prctl.prctl(prctl.NAME, settings.PROCESS_NAME)
# We don't initialize logging until we fork because we want each child to
# have its own logging and it's awkward to reconfigure logging that is
# defined by the parent.
application = create_application()
if args.background:
# Get a new logfile, rotating the old one if present.
err_log_name = os.path.join(settings.LOGS_DIR,
settings.LOG_FILE_PREFIX + "-err.log")
try:
os.rename(err_log_name, err_log_name + ".old")
except OSError:
pass
# Fork into background.
utils.daemonize(err_log_name)
utils.install_sigusr1_handler(settings.LOG_FILE_PREFIX)
# Setup logging
syslog.openlog(settings.LOG_FILE_PREFIX, syslog.LOG_PID)
logging_config.configure_logging(
utils.map_clearwater_log_level(args.log_level), settings.LOGS_DIR,
settings.LOG_FILE_PREFIX, args.process_id)
twisted.python.log.addObserver(on_twisted_log)
pdlogs.CREST_STARTING.log()
# setup accumulators and counters for statistics gathering
api.base.setupStats(args.process_id, args.worker_processes)
# Initialize reactor ports and create worker sub-processes
if args.process_id == 0:
# Main process startup, create pidfile.
# We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(
settings.PID_FILE) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
# Create UNIX domain socket for nginx front-end (used for
# normal operation and as a bridge from the default namespace to the signaling
# namespace in a multiple interface configuration).
bind_safely(reactor, args.process_id, application)
pdlogs.CREST_UP.log()
if args.signaling_namespace and settings.PROCESS_NAME == "homer":
# Running in signaling namespace as Homer, create TCP socket for XDMS requests
# from signaling interface
_log.info("Going to listen for HTTP on TCP port %s",
settings.HTTP_PORT)
http_tcp_port = reactor.listenTCP(settings.HTTP_PORT,
application,
interface=settings.LOCAL_IP)
# Spin up worker sub-processes, passing TCP file descriptor
for process_id in range(1, args.worker_processes):
reactor.spawnProcess(
None,
executable, [
executable, __file__, "--shared-http-tcp-fd",
str(http_tcp_port.fileno()), "--process-id",
str(process_id)
],
childFDs={
0: 0,
1: 1,
2: 2,
http_tcp_port.fileno(): http_tcp_port.fileno()
},
env=os.environ)
else:
# Spin up worker sub-processes
for process_id in range(1, args.worker_processes):
reactor.spawnProcess(
None,
executable,
[executable, __file__, "--process-id",
str(process_id)],
childFDs={
0: 0,
1: 1,
2: 2
},
env=os.environ)
else:
# Sub-process startup, ensure we die if our parent does.
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
# Create UNIX domain socket for nginx front-end based on process ID.
bind_safely(reactor, args.process_id, application)
# Create TCP socket if file descriptor was passed.
if args.shared_http_tcp_fd:
reactor.adoptStreamPort(args.shared_http_tcp_fd, AF_INET,
application)
# We need to catch the shutdown request so that we can properly stop
# the ZMQ interface; otherwise the reactor won't shut down on a SIGTERM
# and will be SIGKILLed when the service is stopped.
reactor.addSystemEventTrigger('before', 'shutdown', on_before_shutdown)
# Kick off the reactor to start listening on configured ports
reactor.run()
def main(args):
syslog.openlog("queue-manager", syslog.LOG_PID)
pdlogs.STARTUP.log()
try:
arguments = docopt(__doc__, argv=args)
except DocoptExit:
pdlogs.EXITING_BAD_CONFIG.log()
raise
local_ip = arguments['--local-ip']
local_site = arguments['--local-site']
etcd_key = arguments['--etcd-key']
node_type = arguments['--node-type']
log_dir = arguments['--log-directory']
log_level = LOG_LEVELS.get(arguments['--log-level'], logging.DEBUG)
wait_plugin_complete = arguments['--wait-plugin-complete']
stdout_err_log = os.path.join(log_dir, "queue-manager.output.log")
if not arguments['--foreground']:
utils.daemonize(stdout_err_log)
# Process names are limited to 15 characters, so abbreviate
prctl.prctl(prctl.NAME, "cw-queue-mgr")
logging_config.configure_logging(log_level,
log_dir,
"queue-manager",
show_thread=True)
# urllib3 logs a WARNING log whenever it recreates a connection, but our
# etcd usage does this frequently (to allow watch timeouts), so deliberately
# ignore this log
urllib_logger = logging.getLogger('urllib3')
urllib_logger.setLevel(logging.ERROR)
utils.install_sigusr1_handler("queue-manager")
# Drop a pidfile. We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(
arguments['--pidfile']) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
plugins_dir = "/usr/share/clearwater/clearwater-queue-manager/plugins/"
plugins = load_plugins_in_dir(
plugins_dir, PluginParams(wait_plugin_complete=wait_plugin_complete))
plugins.sort(key=lambda x: x.key())
synchronizers = []
threads = []
# Load the plugins, but don't start them until we've installed the SIGTERM
# handler, as that handler will gracefully shut down any running
# synchronizers on receiving a SIGTERM
for plugin in plugins:
syncer = EtcdSynchronizer(plugin, local_ip, local_site, etcd_key,
node_type)
synchronizers.append(syncer)
threads.append(syncer.thread)
_log.info("Loaded plugin %s" % plugin)
utils.install_sigterm_handler(synchronizers)
# Now start the plugin threads
for syncer in synchronizers:
syncer.start_thread()
_log.info("Started thread for plugin %s" % syncer._plugin)
while any([thr.isAlive() for thr in threads]):
for thr in threads:
if thr.isAlive():
thr.join(1)
while not utils.should_quit:
sleep(1)
_log.info("Clearwater Queue Manager shutting down")
pdlogs.EXITING.log()
syslog.closelog()
def main(args):
syslog.openlog("cluster-manager", syslog.LOG_PID)
pdlogs.STARTUP.log()
try:
arguments = docopt(__doc__, argv=args)
except DocoptExit:
pdlogs.EXITING_BAD_CONFIG.log()
raise
mgmt_ip = arguments['--mgmt-local-ip']
sig_ip = arguments['--sig-local-ip']
local_site_name = arguments['--local-site']
remote_site_name = arguments['--remote-site']
remote_cassandra_seeds = arguments['--remote-cassandra-seeds']
if remote_cassandra_seeds:
remote_cassandra_seeds = remote_cassandra_seeds.split(',')
else:
remote_cassandra_seeds = []
signaling_namespace = arguments.get('--signaling-namespace')
local_uuid = UUID(arguments['--uuid'])
etcd_key = arguments.get('--etcd-key')
etcd_cluster_key = arguments.get('--etcd-cluster-key')
cluster_manager_enabled = arguments['--cluster-manager-enabled']
log_dir = arguments['--log-directory']
log_level = LOG_LEVELS.get(arguments['--log-level'], logging.DEBUG)
stdout_err_log = os.path.join(log_dir, "cluster-manager.output.log")
# Check that there's an etcd_cluster_key value passed to the cluster
# manager
if etcd_cluster_key == "":
# The etcd_cluster_key isn't valid, and possibly get weird entries in
# the etcd database if we allow the cluster_manager to start
pdlogs.EXITING_MISSING_ETCD_CLUSTER_KEY.log()
exit(1)
if not arguments['--foreground']:
utils.daemonize(stdout_err_log)
# Process names are limited to 15 characters, so abbreviate
prctl.prctl(prctl.NAME, "cw-cluster-mgr")
logging_config.configure_logging(log_level, log_dir, "cluster-manager", show_thread=True)
# urllib3 logs a WARNING log whenever it recreates a connection, but our
# etcd usage does this frequently (to allow watch timeouts), so deliberately
# ignore this log
urllib_logger = logging.getLogger('urllib3')
urllib_logger.setLevel(logging.ERROR)
utils.install_sigusr1_handler("cluster-manager")
# Drop a pidfile. We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(arguments['--pidfile']) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
plugins_dir = "/usr/share/clearwater/clearwater-cluster-manager/plugins/"
plugins = load_plugins_in_dir(plugins_dir,
PluginParams(ip=sig_ip,
mgmt_ip=mgmt_ip,
local_site=local_site_name,
remote_site=remote_site_name,
remote_cassandra_seeds=remote_cassandra_seeds,
signaling_namespace=signaling_namespace,
uuid=local_uuid,
etcd_key=etcd_key,
etcd_cluster_key=etcd_cluster_key))
plugins.sort(key=lambda x: x.key())
plugins_to_use = []
files = []
skip = False
for plugin in plugins:
for plugin_file in plugin.files():
if plugin_file in files:
_log.info("Skipping plugin {} because {} "
"is already managed by another plugin"
.format(plugin, plugin_file))
skip = True
if not skip:
plugins_to_use.append(plugin)
files.extend(plugin.files())
synchronizers = []
threads = []
if cluster_manager_enabled == "N":
# Don't start any threads as we don't want the cluster manager to run
pdlogs.DO_NOT_START.log()
elif etcd_cluster_key == "DO_NOT_CLUSTER":
# Don't start any threads as we don't want this box to cluster
pdlogs.DO_NOT_CLUSTER.log()
else:
for plugin in plugins_to_use:
syncer = EtcdSynchronizer(plugin, sig_ip, etcd_ip=mgmt_ip)
syncer.start_thread()
synchronizers.append(syncer)
threads.append(syncer.thread)
_log.info("Loaded plugin %s" % plugin)
install_sigquit_handler(synchronizers)
utils.install_sigterm_handler(synchronizers)
while any([thread.isAlive() for thread in threads]):
for thread in threads:
if thread.isAlive():
thread.join(1)
_log.info("No plugin threads running, waiting for a SIGTERM or SIGQUIT")
while not utils.should_quit and not should_quit:
sleep(1)
_log.info("Quitting")
_log.debug("%d threads outstanding at exit" % activeCount())
pdlogs.EXITING.log()
syslog.closelog()
#
fileobject.open = _fo_open
fileobject.close = _fo_close
def nowait():
'''nowait
NOTE: GLOBAL SIGNAL CHANGE!
Do not wait for the terminated/exiting fileobject, since this can
block. To prevent the processes from becoming unreaped zombies we
disable the SIGCHILD signal. (see man wait(2))
'''
global NOWAIT
NOWAIT = True
signal.signal(signal.SIGCHLD, signal.SIG_IGN)
if __name__ == '__main__':
import prctl
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
handler = FileObjectHandler(sys.stdin, sys.stdout)
value = handler.run()
sys.exit(value)
#
# end..
def main():
"""Main entry point for Glances.
Select the mode (standalone, client or server)
Run it...
"""
# Log Glances and PSutil version
logger.info('Start Glances {0}'.format(__version__))
logger.info('{0} {1} and PSutil {2} detected'.format(
platform.python_implementation(),
platform.python_version(),
__psutil_version))
# Share global var
global core, standalone, client, server, webserver
# Create the Glances main instance
core = GlancesMain()
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
# Catch the CTRL-C signal
signal.signal(signal.SIGINT, __signal_handler)
# Glances can be ran in standalone, client or server mode
if core.is_standalone():
logger.info("Start standalone mode")
# Import the Glances standalone module
from glances.core.glances_standalone import GlancesStandalone
# Init the standalone mode
standalone = GlancesStandalone(config=core.get_config(),
args=core.get_args())
# Start the standalone (CLI) loop
standalone.serve_forever()
elif core.is_client():
if core.is_client_browser():
logger.info("Start client mode (browser)")
# Import the Glances client browser module
from glances.core.glances_client_browser import GlancesClientBrowser
# Init the client
client = GlancesClientBrowser(config=core.get_config(),
args=core.get_args())
else:
logger.info("Start client mode")
# Import the Glances client module
from glances.core.glances_client import GlancesClient
# Init the client
client = GlancesClient(config=core.get_config(),
args=core.get_args())
# Test if client and server are in the same major version
if not client.login():
logger.critical("The server version is not compatible with the client")
sys.exit(2)
# Start the client loop
client.serve_forever()
# Shutdown the client
client.end()
elif core.is_server():
logger.info("Start server mode")
# Import the Glances server module
from glances.core.glances_server import GlancesServer
args = core.get_args()
server = GlancesServer(cached_time=core.cached_time,
config=core.get_config(),
args=args)
print('Glances server is running on {0}:{1}'.format(args.bind_address, args.port))
# Set the server login/password (if -P/--password tag)
if args.password != "":
server.add_user(args.username, args.password)
# Start the server loop
server.serve_forever()
# Shutdown the server?
server.server_close()
elif core.is_webserver():
logger.info("Start web server mode")
# Import the Glances web server module
from glances.core.glances_webserver import GlancesWebServer
# Init the web server mode
webserver = GlancesWebServer(config=core.get_config(),
args=core.get_args())
# Start the web server loop
webserver.serve_forever()
def pre_exec():
""" Used to cause s3 downloads to die when the parent dies"""
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
def standalone():
"""
Initializes Tornado and our application. Forks worker processes to handle
requests. Does not return until all child processes exit normally.
"""
# Hack to work-around issue with Cyclone and UNIX domain sockets
twisted.internet.address.UNIXAddress.host = "localhost"
# Parse arguments
parser = argparse.ArgumentParser(description="Crest web server")
parser.add_argument("--background", action="store_true", help="Detach and run server in background")
parser.add_argument("--signaling-namespace", action="store_true", help="Server running in signaling namespace")
parser.add_argument("--worker-processes", default=1, type=int)
parser.add_argument("--shared-http-tcp-fd", default=None, type=int)
parser.add_argument("--process-id", default=0, type=int)
args = parser.parse_args()
# Set process name.
prctl.prctl(prctl.NAME, settings.PROCESS_NAME)
# We don't initialize logging until we fork because we want each child to
# have its own logging and it's awkward to reconfigure logging that is
# defined by the parent.
application = create_application()
if args.background:
# Get a new logfile, rotating the old one if present.
err_log_name = os.path.join(settings.LOGS_DIR, settings.LOG_FILE_PREFIX + "-err.log")
try:
os.rename(err_log_name, err_log_name + ".old")
except OSError:
pass
# Fork into background.
utils.daemonize(err_log_name)
utils.install_sigusr1_handler(settings.LOG_FILE_PREFIX)
# Setup logging
syslog.openlog(settings.LOG_FILE_PREFIX, syslog.LOG_PID)
logging_config.configure_logging(settings.LOG_LEVEL, settings.LOGS_DIR, settings.LOG_FILE_PREFIX, args.process_id)
twisted.python.log.addObserver(on_twisted_log)
pdlogs.CREST_STARTING.log()
# setup accumulators and counters for statistics gathering
api.base.setupStats(args.process_id, args.worker_processes)
# Initialize reactor ports and create worker sub-processes
if args.process_id == 0:
# Main process startup, create pidfile.
# We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(settings.PID_FILE) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
# Create UNIX domain socket for nginx front-end (used for
# normal operation and as a bridge from the default namespace to the signaling
# namespace in a multiple interface configuration).
bind_safely(reactor, args.process_id, application)
pdlogs.CREST_UP.log()
if args.signaling_namespace and settings.PROCESS_NAME == "homer":
# Running in signaling namespace as Homer, create TCP socket for XDMS requests
# from signaling interface
_log.info("Going to listen for HTTP on TCP port %s", settings.HTTP_PORT)
http_tcp_port = reactor.listenTCP(settings.HTTP_PORT, application, interface=settings.LOCAL_IP)
# Spin up worker sub-processes, passing TCP file descriptor
for process_id in range(1, args.worker_processes):
reactor.spawnProcess(None, executable, [executable, __file__,
"--shared-http-tcp-fd", str(http_tcp_port.fileno()),
"--process-id", str(process_id)],
childFDs={0: 0, 1: 1, 2: 2, http_tcp_port.fileno(): http_tcp_port.fileno()},
env = os.environ)
else:
# Spin up worker sub-processes
for process_id in range(1, args.worker_processes):
reactor.spawnProcess(None, executable, [executable, __file__,
"--process-id", str(process_id)],
childFDs={0: 0, 1: 1, 2: 2},
env = os.environ)
else:
# Sub-process startup, ensure we die if our parent does.
prctl.prctl(prctl.PDEATHSIG, signal.SIGTERM)
# Create UNIX domain socket for nginx front-end based on process ID.
bind_safely(reactor, args.process_id, application)
# Create TCP socket if file descriptor was passed.
if args.shared_http_tcp_fd:
reactor.adoptStreamPort(args.shared_http_tcp_fd, AF_INET, application)
# We need to catch the shutdown request so that we can properly stop
# the ZMQ interface; otherwise the reactor won't shut down on a SIGTERM
# and will be SIGKILLed when the service is stopped.
reactor.addSystemEventTrigger('before', 'shutdown', on_before_shutdown)
# Kick off the reactor to start listening on configured ports
reactor.run()
def main(args):
syslog.openlog("config-manager", syslog.LOG_PID)
pdlogs.STARTUP.log()
try:
arguments = docopt(__doc__, argv=args)
except DocoptExit:
pdlogs.EXITING_BAD_CONFIG.log()
raise
local_ip = arguments['--local-ip']
local_site = arguments['--local-site']
etcd_key = arguments['--etcd-key']
log_dir = arguments['--log-directory']
log_level = LOG_LEVELS.get(arguments['--log-level'], logging.DEBUG)
stdout_err_log = os.path.join(log_dir, "config-manager.output.log")
if not arguments['--foreground']:
utils.daemonize(stdout_err_log)
# Process names are limited to 15 characters, so abbreviate
prctl.prctl(prctl.NAME, "cw-config-mgr")
logging_config.configure_logging(log_level, log_dir, "config-manager", show_thread=True)
# urllib3 logs a WARNING log whenever it recreates a connection, but our
# etcd usage does this frequently (to allow watch timeouts), so deliberately
# ignore this log
urllib_logger = logging.getLogger('urllib3')
urllib_logger.setLevel(logging.ERROR)
utils.install_sigusr1_handler("config-manager")
# Drop a pidfile. We must keep a reference to the file object here, as this keeps
# the file locked and provides extra protection against two processes running at
# once.
pidfile_lock = None
try:
pidfile_lock = utils.lock_and_write_pid_file(arguments['--pidfile']) # noqa
except IOError:
# We failed to take the lock - another process is already running
exit(1)
plugins_dir = "/usr/share/clearwater/clearwater-config-manager/plugins/"
plugins = load_plugins_in_dir(plugins_dir)
plugins.sort(key=lambda x: x.key())
threads = []
files = [p.file() for p in plugins]
alarm = ConfigAlarm(files)
for plugin in plugins:
syncer = EtcdSynchronizer(plugin, local_ip, local_site, alarm, etcd_key)
syncer.start_thread()
threads.append(syncer.thread)
_log.info("Loaded plugin %s" % plugin)
while any([thr.isAlive() for thr in threads]):
for thr in threads:
if thr.isAlive():
thr.join(1)
_log.info("Clearwater Configuration Manager shutting down")
pdlogs.EXITING.log()
syslog.closelog()
