def end():
"""Stop Glances."""
mode.end()
logger.info("Glances stopped with CTRL-C")
# The end...
sys.exit(0)
def run(self, stat_name, criticity, commands, mustache_dict=None):
"""Run the commands (in background).
- stats_name: plugin_name (+ header)
- criticity: criticity of the trigger
- commands: a list of command line with optional {{mustache}}
- mustache_dict: Plugin stats (can be use within {{mustache}})
Return True if the commands have been ran.
"""
if self.get(stat_name) == criticity or not self.start_timer.finished():
# Action already executed => Exit
return False
logger.debug("Run action {} for {} ({}) with stats {}".format(
commands, stat_name, criticity, mustache_dict))
# Run all actions in background
for cmd in commands:
# Replace {{arg}} by the dict one (Thk to {Mustache})
if pystache_tag:
cmd_full = pystache.render(cmd, mustache_dict)
else:
cmd_full = cmd
# Execute the action
logger.info("Action triggered for {} ({}): {}".format(stat_name, criticity, cmd_full))
logger.debug("Stats value for the trigger: {}".format(mustache_dict))
try:
Popen(cmd_full, shell=True)
except OSError as e:
logger.error("Can't execute the action ({})".format(e))
self.set(stat_name, criticity)
return True
def login(self):
"""Logon to the server."""
if self.args.snmp_force:
# Force SNMP instead of Glances server
self.client_mode = 'snmp'
else:
# First of all, trying to connect to a Glances server
if not self._login_glances():
return False
# Try SNMP mode
if self.client_mode == 'snmp':
if not self._login_snmp():
return False
# Load limits from the configuration file
# Each client can choose its owns limits
logger.debug("Load limits from the client configuration file")
self.stats.load_limits(self.config)
# Init screen
if self.quiet:
# In quiet mode, nothing is displayed
logger.info("Quiet mode is ON: Nothing will be displayed")
else:
self.screen = GlancesCursesClient(config=self.config, args=self.args)
# Return True: OK
return True
def check_snmp(self):
"""Chek if SNMP is available on the server."""
# Import the SNMP client class
from glances.snmp import GlancesSNMPClient
# Create an instance of the SNMP client
clientsnmp = GlancesSNMPClient(host=self.args.client,
port=self.args.snmp_port,
version=self.args.snmp_version,
community=self.args.snmp_community,
user=self.args.snmp_user,
auth=self.args.snmp_auth)
# If we cannot grab the hostname, then exit...
ret = clientsnmp.get_by_oid("1.3.6.1.2.1.1.5.0") != {}
if ret:
# Get the OS name (need to grab the good OID...)
oid_os_name = clientsnmp.get_by_oid("1.3.6.1.2.1.1.1.0")
try:
self.system_name = self.get_system_name(oid_os_name['1.3.6.1.2.1.1.1.0'])
logger.info("SNMP system name detected: {}".format(self.system_name))
except KeyError:
self.system_name = None
logger.warning("Cannot detect SNMP system name")
return ret
def init(self):
"""Init the connection to the InfluxDB server."""
if not self.export_enable:
return None
# Cluster
try:
cluster = Cluster([self.host],
port=int(self.port),
protocol_version=int(self.protocol_version))
session = cluster.connect()
except Exception as e:
logger.critical("Cannot connect to Cassandra cluster '%s:%s' (%s)" % (self.host, self.port, e))
sys.exit(2)
# Keyspace
try:
session.set_keyspace(self.keyspace)
except InvalidRequest as e:
logger.info("Create keyspace {} on the Cassandra cluster".format(self.keyspace))
c = "CREATE KEYSPACE %s WITH replication = { 'class': 'SimpleStrategy', 'replication_factor': '%s' }" % (self.keyspace, self.replication_factor)
session.execute(c)
session.set_keyspace(self.keyspace)
logger.info(
"Stats will be exported to Cassandra cluster {} ({}) in keyspace {}".format(
cluster.metadata.cluster_name, cluster.metadata.all_hosts(), self.keyspace))
# Table
try:
session.execute("CREATE TABLE %s (plugin text, time timeuuid, stat map<text,float>, PRIMARY KEY (plugin, time)) WITH CLUSTERING ORDER BY (time DESC)" % self.table)
except Exception:
logger.debug("Cassandra table %s already exist" % self.table)
return cluster, session
def start(config, args):
"""Start Glances"""
# Load mode
global mode
if core.is_standalone():
from glances.standalone import GlancesStandalone as GlancesMode
elif core.is_client():
if core.is_client_browser():
from glances.client_browser import GlancesClientBrowser as GlancesMode
else:
from glances.client import GlancesClient as GlancesMode
elif core.is_server():
from glances.server import GlancesServer as GlancesMode
elif core.is_webserver():
from glances.webserver import GlancesWebServer as GlancesMode
# Init the mode
logger.info("Start {} mode".format(GlancesMode.__name__))
mode = GlancesMode(config=config, args=args)
# Start the main loop
mode.serve_forever()
# Shutdown
mode.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 {}'.format(__version__))
logger.info('{} {} and PSutil {} detected'.format(
platform.python_implementation(),
platform.python_version(),
psutil_version))
# Share global var
global core
# Create the Glances main instance
core = GlancesMain()
config = core.get_config()
args = core.get_args()
# Catch the CTRL-C signal
signal.signal(signal.SIGINT, __signal_handler)
# Glances can be ran in standalone, client or server mode
start(config=config, args=args)
def __init__(self, requestHandler=GlancesXMLRPCHandler,
cached_time=1,
config=None,
args=None):
# Args
self.args = args
# Init the XML RPC server
try:
self.server = GlancesXMLRPCServer(args.bind_address, args.port, requestHandler)
except Exception as e:
logger.critical("Cannot start Glances server: {}".format(e))
sys.exit(2)
# The users dict
# username / password couple
# By default, no auth is needed
self.server.user_dict = {}
self.server.isAuth = False
# Register functions
self.server.register_introspection_functions()
self.server.register_instance(GlancesInstance(cached_time, config))
if not self.args.disable_autodiscover:
# Note: The Zeroconf service name will be based on the hostname
# Correct issue: Zeroconf problem with zeroconf service name #889
self.autodiscover_client = GlancesAutoDiscoverClient(socket.gethostname().split('.', 1)[0], args)
else:
logger.info("Glances autodiscover announce is disabled")
def init(self):
"""Init the connection to the InfluxDB server."""
if not self.export_enable:
return None
try:
db = InfluxDBClient(host=self.host,
port=self.port,
username=self.user,
password=self.password,
database=self.db)
get_all_db = [i['name'] for i in db.get_list_database()]
self.version = INFLUXDB_09PLUS
except InfluxDBClientError:
# https://github.com/influxdb/influxdb-python/issues/138
logger.info("Trying fallback to InfluxDB v0.8")
db = InfluxDBClient08(host=self.host,
port=self.port,
username=self.user,
password=self.password,
database=self.db)
get_all_db = [i['name'] for i in db.get_list_database()]
self.version = INFLUXDB_08
except InfluxDBClientError08 as e:
logger.critical("Cannot connect to InfluxDB database '%s' (%s)" % (self.db, e))
sys.exit(2)
if self.db in get_all_db:
logger.info(
"Stats will be exported to InfluxDB server: {}".format(db._baseurl))
else:
logger.critical("InfluxDB database '%s' did not exist. Please create it" % self.db)
sys.exit(2)
return db
def filter(self, value):
"""Set the filter (as a sting) and compute the regular expression
A filter could be one of the following:
- python > Process name of cmd start with python
- .*python.* > Process name of cmd contain python
- username:nicolargo > Process of nicolargo user
"""
self._filter_input = value
if value is None:
self._filter = None
self._filter_key = None
else:
new_filter = value.split(':')
if len(new_filter) == 1:
self._filter = new_filter[0]
self._filter_key = None
else:
self._filter = new_filter[1]
self._filter_key = new_filter[0]
self._filter_re = None
if self.filter is not None:
logger.info("Set filter to {} on key {}".format(self.filter, self.filter_key))
# Compute the regular expression
try:
self._filter_re = re.compile(self.filter)
logger.debug("Filter regex compilation OK: {}".format(self.filter))
except Exception as e:
logger.error("Cannot compile filter regex: {} ({})".format(self.filter, e))
self._filter = None
self._filter_re = None
self._filter_key = None
def init(self):
"""Init the connection to the CouchDB server."""
if not self.export_enable:
return None
if self.user is None:
server_uri = 'http://{}:{}/'.format(self.host,
self.port)
else:
server_uri = 'http://{}:{}@{}:{}/'.format(self.user,
self.password,
self.host,
self.port)
try:
s = couchdb.Server(server_uri)
except Exception as e:
logger.critical("Cannot connect to CouchDB server %s (%s)" % (server_uri, e))
sys.exit(2)
else:
logger.info("Connected to the CouchDB server %s" % server_uri)
try:
s[self.db]
except Exception as e:
# Database did not exist
# Create it...
s.create(self.db)
else:
logger.info("There is already a %s database" % self.db)
return s
def __catch_key(self, stats):
# Catch the browser pressed key
self.pressedkey = self.get_key(self.term_window)
if self.pressedkey != -1:
logger.debug("Key pressed. Code=%s" % self.pressedkey)
# Actions...
if self.pressedkey == ord('\x1b') or self.pressedkey == ord('q'):
# 'ESC'|'q' > Quit
self.end()
logger.info("Stop Glances client browser")
sys.exit(0)
elif self.pressedkey == 10:
# 'ENTER' > Run Glances on the selected server
self.active_server = self.cursor
logger.debug("Server {}/{} selected".format(self.cursor + 1, len(stats)))
elif self.pressedkey == curses.KEY_UP or self.pressedkey == 65:
# 'UP' > Up in the server list
self.cursor_up(stats)
logger.debug("Server {}/{} selected".format(self.cursor + 1, len(stats)))
elif self.pressedkey == curses.KEY_DOWN or self.pressedkey == 66:
# 'DOWN' > Down in the server list
self.cursor_down(stats)
logger.debug("Server {}/{} selected".format(self.cursor + 1, len(stats)))
# Return the key code
return self.pressedkey
def init(self):
"""Init the Prometheus Exporter"""
try:
start_http_server(port=int(self.port), addr=self.host)
except Exception as e:
logger.critical("Can not start Prometheus exporter on {}:{} ({})".format(self.host, self.port, e))
sys.exit(2)
else:
logger.info("Start Prometheus exporter on {}:{}".format(self.host, self.port))
def init(self):
"""Init the connection to the Statsd server."""
if not self.export_enable:
return None
logger.info(
"Stats will be exported to StatsD server: {}:{}".format(self.host,
self.port))
return StatsClient(self.host,
int(self.port),
prefix=self.prefix)
def __init__(self, config=None, args=None):
self.config = config
self.args = args
# Quiet mode
self._quiet = args.quiet
self.refresh_time = args.time
# Init stats
self.stats = GlancesStats(config=config, args=args)
# Modules (plugins and exporters) are loaded at this point
# Glances can display the list if asked...
if args.modules_list:
self.display_modules_list()
sys.exit(0)
# If process extended stats is disabled by user
if not args.enable_process_extended:
logger.debug("Extended stats for top process are disabled")
glances_processes.disable_extended()
else:
logger.debug("Extended stats for top process are enabled")
glances_processes.enable_extended()
# Manage optionnal process filter
if args.process_filter is not None:
glances_processes.process_filter = args.process_filter
if (not WINDOWS) and args.no_kernel_threads:
# Ignore kernel threads in process list
glances_processes.disable_kernel_threads()
# Initial system informations update
self.stats.update()
if self.quiet:
logger.info("Quiet mode is ON, nothing will be displayed")
# In quiet mode, nothing is displayed
glances_processes.max_processes = 0
elif args.stdout:
logger.info("Stdout mode is ON, following stats will be displayed: {}".format(args.stdout))
# Init screen
self.screen = GlancesStdout(config=config, args=args)
else:
# Default number of processes to displayed is set to 50
glances_processes.max_processes = 50
# Init screen
self.screen = GlancesCursesStandalone(config=config, args=args)
# Check the latest Glances version
self.outdated = Outdated(config=config, args=args)
def init(self):
"""Init the connection to the restful server."""
if not self.export_enable:
return None
# Build the Restful URL where the stats will be posted
url = '{}://{}:{}{}'.format(self.protocol,
self.host,
self.port,
self.path)
logger.info(
"Stats will be exported to the restful endpoint {}".format(url))
return url
def _init_history(self):
"""Init the history option."""
self.reset_history_tag = False
self.graph_tag = False
if self.args.export_graph:
logger.info('Export graphs function enabled with output path %s' %
self.args.path_graph)
from glances.exports.graph import GlancesGraph
self.glances_graph = GlancesGraph(self.args.path_graph)
if not self.glances_graph.graph_enabled():
self.args.export_graph = False
logger.error('Export graphs disabled')
def end():
"""Stop Glances."""
try:
mode.end()
except NameError:
# NameError: name 'mode' is not defined in case of interrupt shortly...
# ...after starting the server mode (issue #1175)
pass
logger.info("Glances stopped (keypressed: CTRL-C)")
# The end...
sys.exit(0)
def start(self, stats):
"""Start the bottle."""
# Init stats
self.stats = stats
# Init plugin list
self.plugins_list = self.stats.getAllPlugins()
# Bind the Bottle TCP address/port
bindmsg = 'Glances web server started on http://{0}:{1}/'.format(self.args.bind_address, self.args.port)
logger.info(bindmsg)
print(bindmsg)
self._app.run(host=self.args.bind_address, port=self.args.port, quiet=not self.args.debug)
def process_filter(self, value):
"""Set the process filter."""
logger.info("Set process filter to {0}".format(value))
self._process_filter = value
if value is not None:
try:
self._process_filter_re = re.compile(value)
logger.debug("Process filter regex compilation OK: {0}".format(self.process_filter))
except Exception:
logger.error("Cannot compile process filter regex: {0}".format(value))
self._process_filter_re = None
else:
self._process_filter_re = None
def end():
"""Stop Glances."""
try:
mode.end()
except NameError:
# NameError: name 'mode' is not defined in case of interrupt shortly...
# ...after starting the server mode (issue #1175)
pass
logger.info("Glances stopped (keypressed: CTRL-C)")
# The end...
sys.exit(0)
def _init_history(self):
'''Init the history option'''
self.reset_history_tag = False
self.graph_tag = False
if self.args.export_graph:
logger.info('Export graphs function enabled with output path %s' %
self.args.path_graph)
from glances.exports.graph import GlancesGraph
self.glances_graph = GlancesGraph(self.args.path_graph)
if not self.glances_graph.graph_enabled():
self.args.export_graph = False
logger.error('Export graphs disabled')
def __init__(self, config=None, args=None):
# Quiet mode
self._quiet = args.quiet
self.refresh_time = args.time
# Init stats
self.stats = GlancesStats(config=config, args=args)
# If process extended stats is disabled by user
if not args.enable_process_extended:
logger.debug("Extended stats for top process are disabled")
glances_processes.disable_extended()
else:
logger.debug("Extended stats for top process are enabled")
glances_processes.enable_extended()
# Manage optionnal process filter
if args.process_filter is not None:
glances_processes.process_filter = args.process_filter
if (not WINDOWS) and args.no_kernel_threads:
# Ignore kernel threads in process list
glances_processes.disable_kernel_threads()
try:
if args.process_tree:
# Enable process tree view
glances_processes.enable_tree()
except AttributeError:
pass
# Initial system informations update
self.stats.update()
if self.quiet:
logger.info("Quiet mode is ON: Nothing will be displayed")
# In quiet mode, nothing is displayed
glances_processes.max_processes = 0
else:
# Default number of processes to displayed is set to 50
glances_processes.max_processes = 50
# Init screen
self.screen = GlancesCursesStandalone(config=config, args=args)
# Check the latest Glances version
self.outdated = Outdated(config=config, args=args)
# Create the schedule instance
self.schedule = sched.scheduler(timefunc=time.time,
delayfunc=time.sleep)
def __init__(self, config=None, args=None):
# Quiet mode
self._quiet = args.quiet
self.refresh_time = args.time
# Init stats
self.stats = GlancesStats(config=config, args=args)
# If process extended stats is disabled by user
if not args.enable_process_extended:
logger.debug("Extended stats for top process are disabled")
glances_processes.disable_extended()
else:
logger.debug("Extended stats for top process are enabled")
glances_processes.enable_extended()
# Manage optionnal process filter
if args.process_filter is not None:
glances_processes.process_filter = args.process_filter
if (not WINDOWS) and args.no_kernel_threads:
# Ignore kernel threads in process list
glances_processes.disable_kernel_threads()
try:
if args.process_tree:
# Enable process tree view
glances_processes.enable_tree()
except AttributeError:
pass
# Initial system informations update
self.stats.update()
if self.quiet:
logger.info("Quiet mode is ON: Nothing will be displayed")
# In quiet mode, nothing is displayed
glances_processes.max_processes = 0
else:
# Default number of processes to displayed is set to 50
glances_processes.max_processes = 50
# Init screen
self.screen = GlancesCursesStandalone(config=config, args=args)
# Check the latest Glances version
self.outdated = Outdated(config=config, args=args)
# Create the schedule instance
self.schedule = sched.scheduler(
timefunc=time.time, delayfunc=time.sleep)
def _init_history(self):
'''Init the history option'''
self.reset_history_tag = False
self.history_tag = False
if self.args.enable_history:
logger.info('Stats history enabled with output path %s' %
self.args.path_history)
from glances.exports.glances_history import GlancesHistory
self.glances_history = GlancesHistory(self.args.path_history)
if not self.glances_history.graph_enabled():
self.args.enable_history = False
logger.error(
'Stats history disabled because MatPlotLib is not installed')
def _login_snmp(self):
"""Login to a SNMP server"""
logger.info("Trying to grab stats by SNMP...")
from glances.stats_client_snmp import GlancesStatsClientSNMP
# Init stats
self.stats = GlancesStatsClientSNMP(config=self.config, args=self.args)
if not self.stats.check_snmp():
self.log_and_exit("Connection to SNMP server failed")
return False
return True
def _login_snmp(self):
"""Login to a SNMP server"""
logger.info("Trying to grab stats by SNMP...")
from glances.stats_client_snmp import GlancesStatsClientSNMP
# Init stats
self.stats = GlancesStatsClientSNMP(config=self.config, args=self.args)
if not self.stats.check_snmp():
self.log_and_exit("Connection to SNMP server failed")
return False
return True
def process_filter(self, value):
"""Set the process filter."""
logger.info("Set process filter to {0}".format(value))
self._process_filter = value
if value is not None:
try:
self._process_filter_re = re.compile(value)
logger.debug("Process filter regex compilation OK: {0}".format(
self.process_filter))
except Exception:
logger.error(
"Cannot compile process filter regex: {0}".format(value))
self._process_filter_re = None
else:
self._process_filter_re = None
def start_webserver(config, args):
"""Start the Web server mode"""
logger.info("Start web server mode")
# Share global var
global webserver
# Import the Glances web server module
from glances.webserver import GlancesWebServer
# Init the web server mode
webserver = GlancesWebServer(config=config, args=args)
# Start the web server loop
webserver.serve_forever()
def _init_history(self):
'''Init the history option'''
self.reset_history_tag = False
self.history_tag = False
if self.args.enable_history:
logger.info('Stats history enabled with output path %s' %
self.args.path_history)
from glances.exports.glances_history import GlancesHistory
self.glances_history = GlancesHistory(self.args.path_history)
if not self.glances_history.graph_enabled():
self.args.enable_history = False
logger.error(
'Stats history disabled because MatPlotLib is not installed'
)
def start_standalone(config, args):
"""Start the standalone mode"""
logger.info("Start standalone mode")
# Share global var
global standalone
# Import the Glances standalone module
from glances.standalone import GlancesStandalone
# Init the standalone mode
standalone = GlancesStandalone(config=config, args=args)
# Start the standalone (CLI) loop
standalone.serve_forever()
def __init__(self, args=None):
if zeroconf_tag:
logger.info("Init autodiscover mode (Zeroconf protocol)")
try:
self.zeroconf = Zeroconf()
except socket.error as e:
logger.error("Cannot start Zeroconf (%s)" % e)
self.zeroconf_enable_tag = False
else:
self.listener = GlancesAutoDiscoverListener()
self.browser = ServiceBrowser(
self.zeroconf, zeroconf_type, self.listener)
self.zeroconf_enable_tag = True
else:
logger.error("Cannot start autodiscover mode (Zeroconf lib is not installed)")
self.zeroconf_enable_tag = False
def start(self, stats):
"""Start the bottle."""
# Init stats
self.stats = stats
# Init plugin list
self.plugins_list = self.stats.getAllPlugins()
# Bind the Bottle TCP address/port
bindmsg = 'Glances web server started on http://{0}:{1}/'.format(
self.args.bind_address, self.args.port)
logger.info(bindmsg)
print(bindmsg)
self._app.run(host=self.args.bind_address,
port=self.args.port,
quiet=not self.args.debug)
def __init__(self, args=None):
if zeroconf_tag:
logger.info("Init autodiscover mode (Zeroconf protocol)")
try:
self.zeroconf = Zeroconf()
except socket.error as e:
logger.error("Cannot start Zeroconf (%s)" % e)
self.zeroconf_enable_tag = False
else:
self.listener = GlancesAutoDiscoverListener()
self.browser = ServiceBrowser(
self.zeroconf, zeroconf_type, self.listener)
self.zeroconf_enable_tag = True
else:
logger.error("Cannot start autodiscover mode (Zeroconf lib is not installed)")
self.zeroconf_enable_tag = False
def init(self):
"""Init the connection to the Cassandra server."""
if not self.export_enable:
return None
# if username and/or password are not set the connection will try to connect with no auth
auth_provider = PlainTextAuthProvider(username=self.username,
password=self.password)
# Cluster
try:
cluster = Cluster([self.host],
port=int(self.port),
protocol_version=int(self.protocol_version),
auth_provider=auth_provider)
session = cluster.connect()
except Exception as e:
logger.critical(
"Cannot connect to Cassandra cluster '%s:%s' (%s)" %
(self.host, self.port, e))
sys.exit(2)
# Keyspace
try:
session.set_keyspace(self.keyspace)
except InvalidRequest as e:
logger.info("Create keyspace {} on the Cassandra cluster".format(
self.keyspace))
c = "CREATE KEYSPACE %s WITH replication = { 'class': 'SimpleStrategy', 'replication_factor': '%s' }" % (
self.keyspace, self.replication_factor)
session.execute(c)
session.set_keyspace(self.keyspace)
logger.info(
"Stats will be exported to Cassandra cluster {} ({}) in keyspace {}"
.format(cluster.metadata.cluster_name,
cluster.metadata.all_hosts(), self.keyspace))
# Table
try:
session.execute(
"CREATE TABLE %s (plugin text, time timeuuid, stat map<text,float>, PRIMARY KEY (plugin, time)) WITH CLUSTERING ORDER BY (time DESC)"
% self.table)
except Exception:
logger.debug("Cassandra table %s already exist" % self.table)
return cluster, session
def get_password(self, description='', confirm=False, clear=False):
"""Get the password from a Glances client or server.
For Glances server, get the password (confirm=True, clear=False):
1) from the password file (if it exists)
2) from the CLI
Optionally: save the password to a file (hashed with salt + SHA-256)
For Glances client, get the password (confirm=False, clear=True):
1) from the CLI
2) the password is hashed with SHA-256 (only SHA string transit
through the network)
"""
if os.path.exists(self.password_file) and not clear:
# If the password file exist then use it
logger.info("Read password from file {}".format(
self.password_file))
password = self.load_password()
else:
# password_sha256 is the plain SHA-256 password
# password_hashed is the salt + SHA-256 password
password_sha256 = self.sha256_hash(getpass.getpass(description))
password_hashed = self.hash_password(password_sha256)
if confirm:
# password_confirm is the clear password (only used to compare)
password_confirm = self.sha256_hash(
getpass.getpass('Password (confirm): '))
if not self.check_password(password_hashed, password_confirm):
logger.critical("Sorry, passwords do not match. Exit.")
sys.exit(1)
# Return the plain SHA-256 or the salted password
if clear:
password = password_sha256
else:
password = password_hashed
# Save the hashed password to the password file
if not clear:
save_input = input(
'Do you want to save the password? [Yes/No]: ')
if len(save_input) > 0 and save_input[0].upper() == 'Y':
self.save_password(password_hashed)
return password
def init(self):
"""Init the connection to the ES server."""
if not self.export_enable:
return None
try:
es = Elasticsearch(hosts=['{}:{}'.format(self.host, self.port)])
except Exception as e:
logger.critical(
"Cannot connect to ElasticSearch server %s:%s (%s)" %
(self.host, self.port, e))
sys.exit(2)
else:
logger.info("Connected to the ElasticSearch server %s:%s" %
(self.host, self.port))
return es
def load(self, config):
"""Load the server list from the configuration file."""
server_list = []
if config is None:
logger.debug("No configuration file available. Cannot load server list.")
elif not config.has_section(self._section):
logger.warning("No [%s] section in the configuration file. Cannot load server list." % self._section)
else:
logger.info("Start reading the [%s] section in the configuration file" % self._section)
for i in range(1, 256):
new_server = {}
postfix = 'server_%s_' % str(i)
# Read the server name (mandatory)
for s in ['name', 'port', 'alias']:
new_server[s] = config.get_value(self._section, '%s%s' % (postfix, s))
if new_server['name'] is not None:
# Manage optionnal information
if new_server['port'] is None:
new_server['port'] = '61209'
new_server['username'] = '******'
# By default, try empty (aka no) password
new_server['password'] = ''
try:
new_server['ip'] = gethostbyname(new_server['name'])
except gaierror as e:
logger.error("Cannot get IP address for server %s (%s)" % (new_server['name'], e))
continue
new_server['key'] = new_server['name'] + ':' + new_server['port']
# Default status is 'UNKNOWN'
new_server['status'] = 'UNKNOWN'
# Server type is 'STATIC'
new_server['type'] = 'STATIC'
# Add the server to the list
logger.debug("Add server %s to the static list" % new_server['name'])
server_list.append(new_server)
# Server list loaded
logger.info("%s server(s) loaded from the configuration file" % len(server_list))
logger.debug("Static server list: %s" % server_list)
return server_list
def load(self, config):
"""Load the server list from the configuration file."""
server_list = []
if config is None:
logger.warning("No configuration file available. Cannot load server list.")
elif not config.has_section(self._section):
logger.warning("No [%s] section in the configuration file. Cannot load server list." % self._section)
else:
logger.info("Start reading the [%s] section in the configuration file" % self._section)
for i in range(1, 256):
new_server = {}
postfix = "server_%s_" % str(i)
# Read the server name (mandatory)
for s in ["name", "port", "alias"]:
new_server[s] = config.get_value(self._section, "%s%s" % (postfix, s))
if new_server["name"] is not None:
# Manage optionnal information
if new_server["port"] is None:
new_server["port"] = "61209"
new_server["username"] = "******"
# By default, try empty (aka no) password
new_server["password"] = ""
try:
new_server["ip"] = gethostbyname(new_server["name"])
except gaierror as e:
logger.error("Cannot get IP address for server %s (%s)" % (new_server["name"], e))
continue
new_server["key"] = new_server["name"] + ":" + new_server["port"]
# Default status is 'UNKNOWN'
new_server["status"] = "UNKNOWN"
# Server type is 'STATIC'
new_server["type"] = "STATIC"
# Add the server to the list
logger.debug("Add server %s to the static list" % new_server["name"])
server_list.append(new_server)
# Server list loaded
logger.info("%s server(s) loaded from the configuration file" % len(server_list))
logger.debug("Static server list: %s" % server_list)
return server_list
def load(self, config):
"""Load the server list from the configuration file."""
server_list = []
if config is None:
logger.warning("No configuration file available. Cannot load server list.")
elif not config.has_section(self._section):
logger.warning("No [%s] section in the configuration file. Cannot load server list." % self._section)
else:
logger.info("Start reading the [%s] section in the configuration file" % self._section)
for i in range(1, 256):
new_server = {}
postfix = 'server_%s_' % str(i)
# Read the server name (mandatory)
for s in ['name', 'port', 'alias']:
new_server[s] = config.get_value(self._section, '%s%s' % (postfix, s))
if new_server['name'] is not None:
# Manage optionnal information
if new_server['port'] is None:
new_server['port'] = '61209'
new_server['username'] = '******'
# By default, try empty (aka no) password
new_server['password'] = ''
try:
new_server['ip'] = gethostbyname(new_server['name'])
except gaierror as e:
logger.error("Cannot get IP address for server %s (%s)" % (new_server['name'], e))
continue
new_server['key'] = new_server['name'] + ':' + new_server['port']
# Default status is 'UNKNOWN'
new_server['status'] = 'UNKNOWN'
# Server type is 'STATIC'
new_server['type'] = 'STATIC'
# Add the server to the list
logger.debug("Add server %s to the static list" % new_server['name'])
server_list.append(new_server)
# Server list loaded
logger.info("%s server(s) loaded from the configuration file" % len(server_list))
logger.debug("Static server list: %s" % server_list)
return server_list
def update(self, stats):
"""Generate Graph file in the output folder."""
if self.generate_every != 0 and self._timer.finished():
self.args.generate_graph = True
self._timer.reset()
if not self.args.generate_graph:
return
plugins = stats.getPluginsList()
for plugin_name in plugins:
plugin = stats._plugins[plugin_name]
if plugin_name in self.plugins_to_export():
self.export(plugin_name, plugin.get_export_history())
logger.info("Graphs created in the folder {}".format(self.path))
self.args.generate_graph = False
def start_clientbrowser(config, args):
"""Start the browser client mode"""
logger.info("Start client mode (browser)")
# Share global var
global client
# Import the Glances client browser module
from glances.client_browser import GlancesClientBrowser
# Init the client
client = GlancesClientBrowser(config=config, args=args)
# Start the client loop
client.serve_forever()
# Shutdown the client
client.end()
def init(self):
"""Init the connection to the CouchDB server."""
if not self.export_enable:
return None
server_uri = 'tcp://{}:{}'.format(self.host, self.port)
try:
self.context = zmq.Context()
publisher = self.context.socket(zmq.PUB)
publisher.bind(server_uri)
except Exception as e:
logger.critical("Cannot connect to ZeroMQ server %s (%s)" % (server_uri, e))
sys.exit(2)
else:
logger.info("Connected to the ZeroMQ server %s" % server_uri)
return publisher
def update(self, stats):
"""Generate Graph file in the output folder."""
if self.generate_every != 0 and self._timer.finished():
self.args.generate_graph = True
self._timer.reset()
if not self.args.generate_graph:
return
plugins = stats.getPluginsList()
for plugin_name in plugins:
plugin = stats._plugins[plugin_name]
if plugin_name in self.plugins_to_export():
self.export(plugin_name, plugin.get_export_history())
logger.info("Graphs created in the folder {}".format(self.path))
self.args.generate_graph = False
def parse_tags(self, tags):
"""Parse tags into a dict.
tags: a comma separated list of 'key:value' pairs.
Example: foo:bar,spam:eggs
dtags: a dict of tags.
Example: {'foo': 'bar', 'spam': 'eggs'}
"""
dtags = {}
if tags:
try:
dtags = dict([x.split(':') for x in tags.split(',')])
except ValueError:
# one of the 'key:value' pairs was missing
logger.info('Invalid tags passed: %s', tags)
dtags = {}
return dtags
def load(self, config):
"""Load the password from the configuration file."""
password_dict = {}
if config is None:
logger.warning("No configuration file available. Cannot load password list.")
elif not config.has_section(self._section):
logger.warning("No [%s] section in the configuration file. Cannot load password list." % self._section)
else:
logger.info("Start reading the [%s] section in the configuration file" % self._section)
password_dict = dict(config.items(self._section))
# Password list loaded
logger.info("%s password(s) loaded from the configuration file" % len(password_dict))
logger.debug("Password dictionary: %s" % password_dict)
return password_dict
def parse_tags(self, tags):
"""Parse tags into a dict.
tags: a comma separated list of 'key:value' pairs.
Example: foo:bar,spam:eggs
dtags: a dict of tags.
Example: {'foo': 'bar', 'spam': 'eggs'}
"""
dtags = {}
if tags:
try:
dtags = dict([x.split(':') for x in tags.split(',')])
except ValueError:
# one of the 'key:value' pairs was missing
logger.info('Invalid tags passed: %s', tags)
dtags = {}
return dtags
def init(self):
"""Init the connection to the mongodb server."""
if not self.export_enable:
return None
try:
client = MongoClient(host=self.host, port=self.port)
db = client[self.db]
if not self.username and self.password:
db.authenticate(self.username, self.password, source='source_database')
collection = db[self.collection]
except Exception as e:
logger.critical("Cannot connect to Mongodb server %s:%s (%s)" % (self.host, self.port, e))
sys.exit(2)
else:
logger.info("Connected to the Mongodb server %s:%s" % (self.host, self.port))
return collection
def _login_glances(self):
"""Login to a Glances server"""
client_version = None
try:
client_version = self.client.init()
except socket.error as err:
# Fallback to SNMP
self.client_mode = 'snmp'
logger.error("Connection to Glances server failed ({} {})".format(
err.errno, err.strerror))
fallbackmsg = 'No Glances server found on {}. Trying fallback to SNMP...'.format(
self.uri)
if not self.return_to_browser:
print(fallbackmsg)
else:
logger.info(fallbackmsg)
except ProtocolError as err:
# Other errors
msg = "Connection to server {} failed".format(self.uri)
if err.errcode == 401:
msg += " (Bad username/password)"
else:
msg += " ({} {})".format(err.errcode, err.errmsg)
self.log_and_exit(msg)
return False
if self.client_mode == 'glances':
# Check that both client and server are in the same major version
if __version__.split('.')[0] == client_version.split('.')[0]:
# Init stats
self.stats = GlancesStatsClient(config=self.config,
args=self.args)
self.stats.set_plugins(json.loads(self.client.getAllPlugins()))
logger.debug("Client version: {} / Server version: {}".format(
__version__, client_version))
else:
self.log_and_exit(
('Client and server not compatible: '
'Client version: {} / Server version: {}'.format(
__version__, client_version)))
return False
return True
def run(self, stat_name, criticity, commands, repeat, mustache_dict=None):
"""Run the commands (in background).
- stats_name: plugin_name (+ header)
- criticity: criticity of the trigger
- commands: a list of command line with optional {{mustache}}
- If True, then repeat the action
- mustache_dict: Plugin stats (can be use within {{mustache}})
Return True if the commands have been ran.
"""
if (self.get(stat_name) == criticity and not repeat) or \
not self.start_timer.finished():
# Action already executed => Exit
return False
logger.debug("{} action {} for {} ({}) with stats {}".format(
"Repeat" if repeat else "Run", commands, stat_name, criticity,
mustache_dict))
# Run all actions in background
for cmd in commands:
# Replace {{arg}} by the dict one (Thk to {Mustache})
if chevron_tag:
cmd_full = chevron.render(cmd, mustache_dict)
else:
cmd_full = cmd
# Execute the action
logger.info("Action triggered for {} ({}): {}".format(
stat_name, criticity, cmd_full))
try:
ret = secure_popen(cmd_full)
except OSError as e:
logger.error("Action error for {} ({}): {}".format(
stat_name, criticity, e))
else:
logger.debug("Action result for {} ({}): {}".format(
stat_name, criticity, ret))
self.set(stat_name, criticity)
return True
def __catch_key(self, stats):
# Catch the browser pressed key
self.pressedkey = self.get_key(self.term_window)
if self.pressedkey != -1:
logger.debug("Key pressed. Code=%s" % self.pressedkey)
# Actions...
if self.pressedkey == ord('\x1b') or self.pressedkey == ord('q'):
# 'ESC'|'q' > Quit
self.end()
logger.info("Stop Glances client browser")
# sys.exit(0)
self.is_end = True
elif self.pressedkey == 10:
# 'ENTER' > Run Glances on the selected server
self.active_server = self._current_page * self._page_max_lines + self.cursor_position
logger.debug("Server {}/{} selected".format(
self.active_server, len(stats)))
elif self.pressedkey == curses.KEY_UP or self.pressedkey == 65:
# 'UP' > Up in the server list
self.cursor_up(stats)
logger.debug("Server {}/{} selected".format(
self.cursor + 1, len(stats)))
elif self.pressedkey == curses.KEY_DOWN or self.pressedkey == 66:
# 'DOWN' > Down in the server list
self.cursor_down(stats)
logger.debug("Server {}/{} selected".format(
self.cursor + 1, len(stats)))
elif self.pressedkey == curses.KEY_PPAGE:
# 'Page UP' > Prev page in the server list
self.cursor_pageup(stats)
logger.debug("PageUP: Server ({}/{}) pages.".format(
self._current_page + 1, self._page_max))
elif self.pressedkey == curses.KEY_NPAGE:
# 'Page Down' > Next page in the server list
self.cursor_pagedown(stats)
logger.debug("PageDown: Server {}/{} pages".format(
self._current_page + 1, self._page_max))
# Return the key code
return self.pressedkey
def init(self):
"""Init the connection to the Kafka server."""
if not self.export_enable:
return None
# Build the server URI with host and port
server_uri = '{}:{}'.format(self.host, self.port)
try:
s = KafkaProducer(
bootstrap_servers=server_uri,
value_serializer=lambda v: json.dumps(v).encode('utf-8'),
compression_type=self.compression)
except Exception as e:
logger.critical("Cannot connect to Kafka server %s (%s)" %
(server_uri, e))
sys.exit(2)
else:
logger.info("Connected to the Kafka server %s" % server_uri)
return s
def msg_curse(self, args=None):
"""Return the string to display in the curse interface."""
# Init the return message
ret = []
if not self.stats or self.stats == {} or self.is_disable():
return ret
# Generate the output
if 'ami-id' in self.stats and 'region' in self.stats:
msg = 'AWS EC2'
ret.append(self.curse_add_line(msg, "TITLE"))
msg = ' {} instance {} ({})'.format(
to_ascii(self.stats['instance-type']),
to_ascii(self.stats['instance-id']),
to_ascii(self.stats['region']))
ret.append(self.curse_add_line(msg))
# Return the message with decoration
logger.info(ret)
return ret
def start(self, stats):
"""Start the bottle."""
# Init stats
self.stats = stats
# Init plugin list
self.plugins_list = self.stats.getAllPlugins()
# Bind the Bottle TCP address/port
bindurl = 'http://{}:{}/'.format(self.args.bind_address,
self.args.port)
bindmsg = 'Glances web server started on {}'.format(bindurl)
logger.info(bindmsg)
print(bindmsg)
if self.args.open_web_browser:
# Implementation of the issue #946
# Try to open the Glances Web UI in the default Web browser if:
# 1) --open-web-browser option is used
# 2) Glances standalone mode is running on Windows OS
webbrowser.open(bindurl, new=2, autoraise=1)
self._app.run(host=self.args.bind_address, port=self.args.port, quiet=not self.args.debug)
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 {}'.format(__version__))
logger.info('{} {} and PSutil {} detected'.format(
platform.python_implementation(),
platform.python_version(),
psutil_version))
# Share global var
global core
# Create the Glances main instance
core = GlancesMain()
config = core.get_config()
args = core.get_args()
# 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() and not WINDOWS:
start_standalone(config=config, args=args)
elif core.is_client() and not WINDOWS:
if core.is_client_browser():
start_clientbrowser(config=config, args=args)
else:
start_client(config=config, args=args)
elif core.is_server():
start_server(config=config, args=args)
elif core.is_webserver() or (core.is_standalone() and WINDOWS):
# Web server mode replace the standalone mode on Windows OS
# In this case, try to start the web browser mode automaticaly
if core.is_standalone() and WINDOWS:
args.open_web_browser = True
start_webserver(config=config, args=args)
def read(self):
"""Read the config file, if it exists. Using defaults otherwise."""
for config_file in self.config_file_paths():
logger.info('Search glances.conf file in {}'.format(config_file))
if os.path.exists(config_file):
try:
with open(config_file, encoding='utf-8') as f:
self.parser.read_file(f)
self.parser.read(f)
logger.info(
"Read configuration file '{}'".format(config_file))
except UnicodeDecodeError as err:
logger.error(
"Can not read configuration file '{}': {}".format(
config_file, err))
sys.exit(1)
# Save the loaded configuration file path (issue #374)
self._loaded_config_file = config_file
break
# Set the default values for section not configured
self.sections_set_default()
def init(self):
"""Init the connection to the InfluxDB server."""
if not self.export_enable:
return None
try:
db = InfluxDBClient(host=self.host,
port=self.port,
username=self.user,
password=self.password,
database=self.db)
get_all_db = [i['name'] for i in db.get_list_database()]
self.version = INFLUXDB_09PLUS
except InfluxDBClientError:
# https://github.com/influxdb/influxdb-python/issues/138
logger.info("Trying fallback to InfluxDB v0.8")
db = InfluxDBClient08(host=self.host,
port=self.port,
username=self.user,
password=self.password,
database=self.db)
get_all_db = [i['name'] for i in db.get_list_database()]
self.version = INFLUXDB_08
except InfluxDBClientError08 as e:
logger.critical("Cannot connect to InfluxDB database '%s' (%s)" %
(self.db, e))
sys.exit(2)
if self.db in get_all_db:
logger.info(
"Stats will be exported to InfluxDB server: {0}".format(
db._baseurl))
else:
logger.critical(
"InfluxDB database '%s' did not exist. Please create it" %
self.db)
sys.exit(2)
return db
def __init__(self, config=None, args=None):
"""Init the CSV export IF."""
super(Export, self).__init__(config=config, args=args)
# CSV file name
self.csv_filename = args.export_csv_file
# Set the CSV output file
# (see https://github.com/nicolargo/glances/issues/1525)
if not os.path.isfile(self.csv_filename) or args.export_csv_overwrite:
# File did not exist, create it
file_mode = 'w'
self.old_header = None
else:
# A CSV file already exit, append new data
file_mode = 'a'
# Header will be check later
# Get the existing one
try:
self.csv_file = open_csv_file(self.csv_filename, 'r')
reader = csv.reader(self.csv_file)
except IOError as e:
logger.critical("Cannot open existing CSV file: {}".format(e))
sys.exit(2)
self.old_header = next(reader, None)
self.csv_file.close()
try:
self.csv_file = open_csv_file(self.csv_filename, file_mode)
self.writer = csv.writer(self.csv_file)
except IOError as e:
logger.critical("Cannot create the CSV file: {}".format(e))
sys.exit(2)
logger.info("Stats exported to CSV file: {}".format(self.csv_filename))
self.export_enable = True
self.first_line = True
def add_service(self, zeroconf, srv_type, srv_name):
"""Method called when a new Zeroconf client is detected.
Return True if the zeroconf client is a Glances server
Note: the return code will never be used
"""
if srv_type != zeroconf_type:
return False
logger.debug("Check new Zeroconf server: %s / %s" %
(srv_type, srv_name))
info = zeroconf.get_service_info(srv_type, srv_name)
if info:
new_server_ip = socket.inet_ntoa(info.address)
new_server_port = info.port
# Add server to the global dict
self.servers.add_server(srv_name, new_server_ip, new_server_port)
logger.info("New Glances server detected (%s from %s:%s)" %
(srv_name, new_server_ip, new_server_port))
else:
logger.warning(
"New Glances server detected, but Zeroconf info failed to be grabbed")
return True
