def main():
"""handle unexpected exceptions"""
parser = argparse.ArgumentParser(
description="Integrated Manager for Lustre software Agent")
parser.add_argument("--publish-zconf", action="store_true")
parser.parse_args()
signal.signal(signal.SIGHUP, signal.SIG_IGN)
daemon_log_setup()
console_log_setup()
daemon_log.info("Starting")
try:
daemon_log.info("Entering main loop")
try:
url = urljoin(os.environ["IML_MANAGER_URL"], "agent/message/")
except KeyError as e:
daemon_log.error(
"No configuration found (must be registered before running the agent service), "
"details: %s" % e)
return
if config.profile_managed is False:
# This is kind of terrible. The design of DevicePluginManager is
# such that it can be called with either class methods or
# instantiated and then called with instance methods. As such,
# we can't pass in a list of excluded plugins to the instance
# constructor. Well, we could, but it would only work some
# of the time and that would be even more awful.
import chroma_agent.plugin_manager
chroma_agent.plugin_manager.EXCLUDED_PLUGINS += ['corosync']
agent_client = AgentClient(url, ActionPluginManager(),
DevicePluginManager(), ServerProperties(),
Crypto(ENV_PATH))
def teardown_callback(*args, **kwargs):
agent_client.stop()
agent_client.join()
[function() for function in agent_daemon_teardown_functions]
signal.signal(signal.SIGINT, teardown_callback)
signal.signal(signal.SIGTERM, teardown_callback)
signal.signal(signal.SIGUSR1, decrease_loglevel)
signal.signal(signal.SIGUSR2, increase_loglevel)
# Call any agent daemon startup methods that were registered.
[function() for function in agent_daemon_startup_functions]
agent_client.start()
# Waking-wait to pick up signals
while not agent_client.stopped.is_set():
agent_client.stopped.wait(timeout=10)
agent_client.join()
except Exception, e:
backtrace = '\n'.join(traceback.format_exception(*(sys.exc_info())))
daemon_log.error("Unhandled exception: %s" % backtrace)
def main():
"""Daemonize and handle unexpected exceptions"""
parser = argparse.ArgumentParser(
description="Intel® Manager for Lustre* software Agent")
parser.add_argument("--foreground", action="store_true")
parser.add_argument("--publish-zconf", action="store_true")
parser.add_argument("--pid-file", default="/var/run/chroma-agent.pid")
args = parser.parse_args()
# FIXME: at startup, if there is a PID file hanging around, find any
# processes which are children of that old PID, and kill them: prevent
# orphaned processes from an old agent run hanging around where they
# could cause trouble (think of a 2 hour mkfs)
if not args.foreground:
if os.path.exists(args.pid_file):
pid = None
try:
pid = int(open(args.pid_file).read())
os.kill(pid, 0)
except (ValueError, OSError, IOError):
# Not running, delete stale PID file
sys.stderr.write("Removing stale PID file\n")
try:
os.remove(args.pid_file)
os.remove(args.pid_file + ".lock")
except OSError, e:
import errno
if e.errno != errno.ENOENT:
raise e
if pid is not None:
kill_orphans_of(pid)
else:
# Running, we should refuse to run
raise RuntimeError("Daemon is already running (PID %s)" % pid)
else:
if os.path.exists(args.pid_file + ".lock"):
sys.stderr.write("Removing stale lock file\n")
os.remove(args.pid_file + ".lock")
signal.signal(signal.SIGHUP, signal.SIG_IGN)
context = DaemonContext(pidfile=PIDLockFile(args.pid_file))
context.open()
daemon_log_setup()
console_log_setup()
daemon_log.info("Starting in the background")
raise RuntimeError("Daemon is already running (PID %s)" % pid)
else:
if os.path.exists(args.pid_file + ".lock"):
sys.stderr.write("Removing stale lock file\n")
os.remove(args.pid_file + ".lock")
signal.signal(signal.SIGHUP, signal.SIG_IGN)
context = DaemonContext(pidfile=PIDLockFile(args.pid_file))
context.open()
daemon_log_setup()
console_log_setup()
daemon_log.info("Starting in the background")
else:
context = None
daemon_log_setup()
daemon_log.addHandler(logging.StreamHandler())
console_log_setup()
try:
daemon_log.info("Entering main loop")
try:
conf = config.get('settings', 'server')
except (KeyError, TypeError) as e:
daemon_log.error(
"No configuration found (must be registered before running the agent service), "
"details: %s" % e)
return
if config.profile_managed is False: