271 lines
10 KiB
Python
271 lines
10 KiB
Python
import MySQLdb # sudo port install py-mysql
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import time
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import StringIO
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import re
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from wol import *
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import os
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from Util import *
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import abc
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import sqlite3
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from mysql2sqlite import mysql_to_sqlite
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def isMachineResponding(machineName):
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(returnCode, stdout, stderr) = executeProgram(['ping', '-o', '-t', '1', machineName])
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# log( 'isMachineResponding : result of command %s : %d' % (command, returnCode) )
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if returnCode == 0:
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return True
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else:
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bMachineNameIsNotKnown = (returnCode == 68)
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bMachineIsNotResponding = (returnCode == 2)
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if bMachineIsNotResponding is False:
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bBUG_00000004_IS_STILL_ALIVE = True
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if bBUG_00000004_IS_STILL_ALIVE is True and returnCode == 142:
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log('isMachineResponding : bug00000004 Unexpected return code : returnCode=%d, stdout="%s", stderr="%s" , machineName = %s' % (returnCode, stdout, stderr, machineName))
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# don't stop the program until we understand bug00000004
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elif bBUG_00000004_IS_STILL_ALIVE is True and returnCode == -14: # I had this error code on 07/09/2009 20:38 but I don't know yet what that means
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log('isMachineResponding : bug00000004 Unexpected return code : returnCode=%d, stdout="%s", stderr="%s" , machineName = %s' % (returnCode, stdout, stderr, machineName))
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# don't stop the program until we understand bug00000004
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else:
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log('isMachineResponding : Unexpected return code : returnCode=%d, stdout="%s", stderr="%s" , machineName = %s' % (returnCode, stdout, stderr, machineName))
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assert(False)
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return False
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class ISqlDatabaseBackend(object):
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def __init__(self):
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pass
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@abc.abstractmethod
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def query(self, sql_query):
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"""
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:param str sql_query: the sql query to perform
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"""
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pass
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class RemoteMysqlDb(ISqlDatabaseBackend):
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def __init__(self, db_server_fqdn, db_user, db_name):
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"""
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:param str db_server_fqdn: the fully qualified domain name of the server hosting the database, eg simpatix10.univ-rennes1.fr
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:param str db_user: the user for accessing the inventory database, eg simpadb_reader
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:param str db_name: the name of the inventory database, eg simpadb
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"""
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self._db_server_fqdn = db_server_fqdn
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self._db_user = db_user
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self._db_name = db_name
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self._connect()
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def _connect(self):
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self._conn = MySQLdb.connect(self._db_server_fqdn, self._db_user, '', self._db_name)
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assert(self._conn)
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def query(self, sql_query):
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"""
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:param str sql_query: the sql query to perform
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"""
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self._conn.query(sql_query)
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rows = conn.store_result()
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return rows
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class SqlFile(ISqlDatabaseBackend):
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def __init__(self, sql_file_path, truncate_hex_strings=False):
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"""
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:param str sql_file_path: the path of the sql file containing the inventory database
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"""
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self._sql_file_path = sql_file_path
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self._cur = None # sqlite cursor
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sqlite_db_path = ':memory:' # sqlite-specific special name for a file stored in memory. We could use something like '/tmp/simpadb.sqlite' here but this would make parsing really slow (1 minute instead of 1s), unless either :
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# - proper fix : group of INSERT statements are surrounded by BEGIN and COMMIT (see http://stackoverflow.com/questions/4719836/python-and-sqlite3-adding-thousands-of-rows)
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# - the file is stored on a solid state disk
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try:
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os.remove(sqlite_db_path)
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except:
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pass
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check_same_thread = False
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# this is to prevent the following error when run from apache/django : SQLite objects created in a thread can only be used in that same thread.The object was created in thread id 139672342353664 and this is thread id 139672333960960
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# accordig to https://stackoverflow.com/questions/48218065/programmingerror-sqlite-objects-created-in-a-thread-can-only-be-used-in-that-sa this is ok, as long as there are no concurrent writes
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# If set False, the returned connection may be shared across multiple threads. When using multiple threads with the same connection writing operations should be serialized by the user to avoid data corruption
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# I hope it's safe here but I'm not 100% sure though. Anyway, if the database gets corrupt, it not a big deal since this memory resident database gets reconstructed from the sql file...
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self._con = sqlite3.connect(sqlite_db_path, check_same_thread=check_same_thread)
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f = open(self._sql_file_path, 'r')
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sql = f.read() # watch out for built-in `str`
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# print(sql)
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self._cur = self._con.cursor()
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# print(mysql_to_sqlite(sql))
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sqlite_sql = mysql_to_sqlite(sql, truncate_hex_strings)
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# with open('/tmp/toto.sqlite.sql', 'w') as f:
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# f.write(sqlite_sql)
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# with open('/tmp/toto.sqlite.sql', 'r') as f:
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# sqlite_sql = f.read()
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self._cur.executescript(sqlite_sql)
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def query(self, sql_query):
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"""
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:param str sql_query: the sql query to perform
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"""
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pass
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self._cur.execute(sql_query)
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rows = self._cur.fetchall()
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return rows
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class TableAttrNotFound(Exception):
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def __init__(self, table, key_name, key_value, attr_name):
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message = "failed to find in table %s a value for %s where %s is %s" % (table, attr_name, key_name, key_value)
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super(TableAttrNotFound, self).__init__(message)
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self.table = table
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self.key_name = key_name
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self.key_value = key_value
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self.attr_name = attr_name
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class SqlDatabaseReader(object):
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def __init__(self, inv_provider):
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"""
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:param ISqlDatabaseBackend inv_provider: the input that provides the inventory data
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"""
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self._inv_provider = inv_provider
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def query(self, sql_query):
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"""
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performs a query on the sql database
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:param str sql_query: the sql query to perform
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"""
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return self._inv_provider.query(sql_query)
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def get_table_attr(self, table, key_name, key_value, attr_name):
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"""
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reads the value of the fiven attribute of the given item in the given table
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:param str table: the name of the table to read
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:param str key_name: the name of the column that stores the id of the item to read
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:param str key_value: the id of the item to read
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:param str attr_name: the name of the attribute to read from the item
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"""
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attr_value = None
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rows = self.query("SELECT " + attr_name + " FROM " + table + " WHERE " + key_name + "='" + key_value + "'")
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if len(rows) > 0:
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attr_value = rows[0][0]
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else:
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raise TableAttrNotFound(table, key_name, key_value, attr_name)
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return attr_value
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def machineNameToMacAddress(machineName):
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conn = MySQLdb.connect('simpatix10', 'simpadb_reader', '', 'simpadb')
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assert(conn)
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sqlQuery = """SELECT mac_address FROM ethernet_cards WHERE machine_name='""" + machineName + """' AND type='normal'"""
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# print sqlQuery
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conn.query(sqlQuery)
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r = conn.store_result()
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row = r.fetch_row(0)
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assert( len(row) == 1)
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# print 'row =', row
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macAddress = row[0][0]
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# print macAddress
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conn.close()
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return macAddress
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def getLightOutManagementIpAddress(machineName):
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"""
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the light out management ip of servers allows to talk to the server even when it's asleep
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"""
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conn = MySQLdb.connect('simpatix10', 'simpadb_reader', '', 'simpadb')
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assert(conn)
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sqlQuery = """SELECT ip_address_1,ip_address_2,ip_address_3,ip_address_4 FROM ethernet_cards WHERE machine_name='""" + machineName + """' AND type='light_out_management'"""
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# print sqlQuery
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conn.query(sqlQuery)
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r = conn.store_result()
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row = r.fetch_row(0)
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assert(len(row) == 1)
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# print 'row =', row
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ipAddress = ('%s.%s.%s.%s') % (row[0][0], row[0][1], row[0][2], row[0][3])
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# print macAddress
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conn.close()
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return ipAddress
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def getClusterMachinesNames():
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clusterMachinesNames = []
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conn = MySQLdb.connect('simpatix10', 'simpadb_reader', '', 'simpadb')
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assert(conn)
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sqlQuery = """SELECT name FROM machines WHERE affectation='cluster'"""
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# print sqlQuery
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conn.query(sqlQuery)
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r = conn.store_result()
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rows = r.fetch_row(0)
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for row in rows:
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# print row
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clusterMachinesNames.append(row[0])
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conn.close()
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return clusterMachinesNames
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def machineSupportsIpmi(machineName):
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if (machineName == 'simpatix') or (machineName == 'simpatix01' or (machineName == 'simpa-mac2')):
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# the command ipmitool sensor on simpatix doesn't work :
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# Unabled to establish a session with the BMC.
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# Command failed due to Unknown (0xFFFEF921) (0xFFFEF921)
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return False
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return True
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def putToSleep(machineName):
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# note : pmset must be executed as root
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(returnCode, stdout, stderr) = executeCommand(['ssh', machineName, 'pmset sleepnow'])
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"""
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print returnCode
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print 'stdout :'
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print stdout
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print 'stderr :'
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print stderr
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"""
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assert(returnCode == 0)
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# check if the command succeeded by looking at the output (that's the only way I found)
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f = StringIO.StringIO(stdout)
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line = f.readline()
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f.close()
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matchObj = re.match('^Sleeping now...', line)
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if matchObj:
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return True
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else:
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return False
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def wakeUp(machineName):
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macAddress = machineNameToMacAddress(machineName)
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wake_on_lan(macAddress)
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return True
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def isNonRespondingMachineSleeping(machineName):
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"""
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note : crappy method to detect if the machine is sleeping (if other methods are available, I would be very interested)
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"""
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wakeUp(machineName)
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time.sleep(120)
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if isMachineResponding(machineName):
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putToSleep(machineName)
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time.sleep(30) # allow a little time to make sure the machine is ready to receive other wake on lan messages
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return True
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else:
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return False
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if __name__ == '__main__':
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"""
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for i in range(30):
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machineName = 'simpatix%d' % (i+10)
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print 'lom ip of %s is %s' % (machineName, getLightOutManagementIpAddress(machineName))
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"""
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wakeUp('simpatix21')
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# print putToSleep('simpatix13')
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# print isNonRespondingMachineSleeping('simpatix13')
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