/usr/lib/stonith/plugins/external/dracmc-telnet is in cluster-glue 1.0.12-7build1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# vim: set filetype=python
#######################################################################
#
# dracmc-telnet - External stonith plugin for HAv2 (http://linux-ha.org/wiki)
# Connects to Dell Drac/MC Blade Enclosure via a Cyclades
# terminal server with telnet and switches power of named
# blade servers appropriatelly.
#
# Required parameters:
# nodename: The name of the server you want to touch on your network
# cyclades_ip: The IP address of the cyclades terminal server
# cyclades_port: The port for telnet to access on the cyclades (i.e. 7032)
# servername: The DRAC/MC server name of the blade (i.e. Server-7)
# username: The login user name for the DRAC/MC
# password: The login password for the DRAC/MC
#
# Author: Alex Tsariounov <alext@novell.com>
#
# Based on ibmrsa-telnet external stonith plugin by Andreas Mock
# (andreas.mock@web.de), Copyright by Adreas Mock and released as part
# of HAv2.
#
# History:
# 2009-10-12 First release.
#
# Copyright (c) 2009 Novell, Inc.
# All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 or later of the GNU General Public
# License as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
#######################################################################
import sys
import os
import time
import telnetlib
import random
import subprocess
LOGINRETRIES = 10
class TimeoutException(Exception):
def __init__(self, value=None):
Exception.__init__(self)
self.value = value
def __str__(self):
return repr(self.value)
class DracMC(telnetlib.Telnet):
def __init__(self, *args, **kwargs):
telnetlib.Telnet.__init__(self)
self._timeout = 4
self._loggedin = 0
self._history = []
self._appl = os.path.basename(sys.argv[0])
self._server = args[0]
def _get_timestamp(self):
ct = time.time()
msecs = (ct - int(ct)) * 1000
return "%s,%03d" % (time.strftime("%Y-%m-%d %H:%M:%S",
time.localtime(ct)), msecs)
def write(self, buffer):
self._history.append(self._get_timestamp() + ': WRITE: ' + repr(buffer))
telnetlib.Telnet.write(self, buffer)
def read_until(self, what, timeout=2):
line = telnetlib.Telnet.read_until(self, what, timeout)
self._history.append(self._get_timestamp() + ': READ : ' + repr(line))
if not line.endswith(what):
raise TimeoutException("Timeout while waiting for '%s'." % (what, ))
return line
def login(self, user, passwd):
time.sleep(0.3)
try:
line = self.read_until('Login: ', self._timeout)
self.write(user)
self.write('\r')
line = self.read_until('Password: ', self._timeout)
self.write(passwd)
self.write('\r')
except:
self.write("\r")
line = self.read_until('Login: ', self._timeout)
self.write(user)
self.write('\r')
line = self.read_until('Password: ', self._timeout)
self.write(passwd)
self.write('\r')
try:
line = self.read_until('DRAC/MC:', self._timeout)
except:
self.write("\r")
line = self.read_until('DRAC/MC:', self._timeout)
def hardreset(self):
self.write('serveraction -s %s hardreset\r' % self._server)
line = self.read_until('OK', 10)
line = self.read_until('DRAC/MC:', self._timeout)
def powercycle(self):
self.write('serveraction -s %s powercycle\r' % self._server)
line = self.read_until('OK', 10)
line = self.read_until('DRAC/MC:', self._timeout)
def on(self):
self.write('serveraction -s %s powerup\r' % self._server)
line = self.read_until('OK', 10)
line = self.read_until('DRAC/MC:', self._timeout)
def off(self):
self.write('serveraction -s %s powerdown\r' % self._server)
line = self.read_until('OK', 10)
line = self.read_until('DRAC/MC:', self._timeout)
def exit(self):
self.write('exit\r')
def get_history(self):
return "\n".join(self._history)
class DracMCStonithPlugin:
def __init__(self):
# define the external stonith plugin api
self._required_cmds = \
'reset gethosts status getconfignames getinfo-devid ' \
'getinfo-devname getinfo-devdescr getinfo-devurl ' \
'getinfo-xml'
self._optional_cmds = 'on off'
self._required_cmds_list = self._required_cmds.split()
self._optional_cmds_list = self._optional_cmds.split()
# who am i
self._appl = os.path.basename(sys.argv[0])
# telnet connection object
self._connection = None
# the list of configuration names
self._confignames = ['nodename', 'cyclades_ip', 'cyclades_port',
'servername', 'username', 'password']
# catch the parameters provided by environment
self._parameters = {}
for name in self._confignames:
try:
self._parameters[name] = os.environ.get(name, '').split()[0]
except IndexError:
self._parameters[name] = ''
def _get_timestamp(self):
ct = time.time()
msecs = (ct - int(ct)) * 1000
return "%s,%03d" % (time.strftime("%Y-%m-%d %H:%M:%S",
time.localtime(ct)), msecs)
def _echo_debug(self, *args):
subprocess.call("ha_log.sh debug '%s'" % ' '.join(args), shell=True)
def echo(self, *args):
what = ''.join([str(x) for x in args])
sys.stdout.write(what)
sys.stdout.write('\n')
sys.stdout.flush()
self._echo_debug("STDOUT:", what)
def echo_log(self, level, *args):
subprocess.call("ha_log.sh %s '%s'" % (level,' '.join(args)), shell=True)
def _get_connection(self):
if not self._connection:
c = DracMC(self._parameters['servername'])
self._echo_debug("Connecting to '%s:%s'" %
(self._parameters['cyclades_ip'],
self._parameters['cyclades_port']))
tries = 0
while tries < LOGINRETRIES:
try:
c.open(self._parameters['cyclades_ip'],
self._parameters['cyclades_port'])
c.login(self._parameters['username'],
self._parameters['password'])
except Exception as args:
if "Connection reset by peer" in str(args):
self._echo_debug("Someone is already logged in... retry=%s" % tries)
c.close()
time.sleep(random.uniform(1.0, 5.0))
else:
raise
else:
break
tries += 1
if tries == LOGINRETRIES:
c.close()
raise Exception("Could not log in to %s:%s" %
(self._parameters['cyclades_ip'],
self._parameters['cyclades_port']))
self._connection = c
def _end_connection(self):
if self._connection:
self._connection.exit()
self._connection.close()
def reset(self):
self._get_connection()
# self._connection.hardreset()
self._connection.powercycle()
self._end_connection()
self._echo_debug(self._connection.get_history())
self.echo_log("info", "Reset of node '%s' done" %
(self._parameters['nodename'],))
return(0)
def on(self):
self._get_connection()
self._connection.on()
self._end_connection()
self._echo_debug(self._connection.get_history())
self.echo_log("info", "Switched node '%s' ON" %
(self._parameters['nodename'],))
return(0)
def off(self):
self._get_connection()
self._connection.off()
self._end_connection()
self._echo_debug(self._connection.get_history())
self.echo_log("info", "Switched node '%s' OFF" %
(self._parameters['nodename'],))
return(0)
def gethosts(self):
self.echo(self._parameters['nodename'])
return(0)
def status(self):
self._get_connection()
self._end_connection()
self._echo_debug(self._connection.get_history())
return(0)
def getconfignames(self):
for name in ['nodename', 'cyclades_ip', 'cyclades_port', 'servername',
'username', 'password']:
self.echo(name)
return(0)
def getinfo_devid(self):
self.echo("External Stonith Plugin for Dell DRAC/MC via Cyclades")
return(0)
def getinfo_devname(self):
self.echo("External Stonith Plugin for Dell Drac/MC connecting "
"via Telnet to a Cyclades port")
return(0)
def getinfo_devdescr(self):
self.echo("External stonith plugin for HAv2 which connects to "
"a Dell DRAC/MC connected via a Cyclades port with telnet. "
"Commands to turn on/off power and to reset server are sent "
"appropriately. "
"(c) 2009 by Novell, Inc. (alext@novell.com)")
return(0)
def getinfo_devurl(self):
self.echo("http://support.dell.com/support/edocs/software/smdrac3/dracmc/1.3/en/index.htm")
def getinfo_xml(self):
info = """<parameters>
<parameter name="nodename" unique="1" required="1">
<content type="string" />
<shortdesc lang="en">nodename to shoot</shortdesc>
<longdesc lang="en">
Name of the node to be stonithed.
</longdesc>
</parameter>
<parameter name="cyclades_ip" unique="1" required="1">
<content type="string" />
<shortdesc lang="en">hostname or ip address of cyclades</shortdesc>
<longdesc lang="en">
Hostname or IP address of Cyclades connected to DRAC/MC.
</longdesc>
</parameter>
<parameter name="cyclades_port" unique="1" required="1">
<content type="string" />
<shortdesc lang="en">telnet port to use on cyclades</shortdesc>
<longdesc lang="en">
Port used with the Cyclades telnet interface which is connected to the DRAC/MC.
</longdesc>
</parameter>
<parameter name="servername" unique="1" required="1">
<content type="string" />
<shortdesc lang="en">DRAC/MC name of blade to be stonithed</shortdesc>
<longdesc lang="en">
Name of server blade to be stonithed on the DRAC/MC (example: Server-7)
</longdesc>
</parameter>
<parameter name="username" unique="1" required="1">
<content type="string" />
<shortdesc lang="en">username to login on the DRAC/MC</shortdesc>
<longdesc lang="en">
Username to login to the DRAC/MC once connected via the Cyclades port.
</longdesc>
</parameter>
<parameter name="password" unique="1" required="1">
<content type="string" />
<shortdesc lang="en">password to login on the DRAC/MC</shortdesc>
<longdesc lang="en">
Password to login to the DRAC/MC once connected via the Cyclades port.
</longdesc>
</parameter>
</parameters>
"""
self.echo(info)
return(0)
def not_implemented(self, cmd):
self.echo_log("err", "Command '%s' not implemented." % (cmd,))
return(1)
def usage(self):
usage = "Call me with one of the allowed commands: %s, %s" % (
', '.join(self._required_cmds_list),
', '.join(self._optional_cmds_list))
return usage
def process(self, argv):
self._echo_debug("========== Start =============")
if len(argv) < 1:
self.echo_log("err", 'At least one commandline argument required.')
return(1)
cmd = argv[0]
self._echo_debug("cmd:", cmd)
if cmd not in self._required_cmds_list and \
cmd not in self._optional_cmds_list:
self.echo_log("err", "Command '%s' not supported." % (cmd,))
return(1)
try:
cmd = cmd.lower().replace('-', '_')
func = getattr(self, cmd, self.not_implemented)
rc = func()
return(rc)
except Exception as args:
self.echo_log("err", 'Exception raised:', str(args))
if self._connection:
self.echo_log("err", self._connection.get_history())
self._connection.close()
return(1)
if __name__ == '__main__':
stonith = DracMCStonithPlugin()
rc = stonith.process(sys.argv[1:])
sys.exit(rc)
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