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fence_brocade.py
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fence_brocade.py
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#!/usr/bin/python
import sys, re, pexpect, exceptions
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
#BEGIN_VERSION_GENERATION
RELEASE_VERSION="New Brocade Agent - test release on steroids"
REDHAT_COPYRIGHT=""
BUILD_DATE="March, 20013"
#END_VERSION_GENERATION
def get_power_status(conn, options):
conn.send_eol("portCfgShow " + options["--plug"])
exp_result = conn.log_expect(options, options["--command-prompt"], int(options["--shell-timeout"]))
show_re = re.compile('^\s*Persistent Disable\s*(ON|OFF)\s*$', re.IGNORECASE)
lines = conn.before.split("\n")
for x in lines:
res = show_re.search(x)
if (res != None):
# We queried if it is disabled, so we have to negate answer
if res.group(1) == "ON":
return "off"
else:
return "on"
fail(EC_STATUS)
def set_power_status(conn, options):
action = {
'on' : "portCfgPersistentEnable",
'off': "portCfgPersistentDisable"
}[options["--action"]]
conn.send_eol(action + " " + options["--plug"])
conn.log_expect(options, options["--command-prompt"], int(options["--power-timeout"]))
def main():
device_opt = [ "ipaddr", "login", "passwd", "cmd_prompt", "secure", "port", "fabric_fencing" ]
atexit.register(atexit_handler)
all_opt["cmd_prompt"]["default"] = [ "> " ]
options = check_input(device_opt, process_input(device_opt))
options["eol"] = "\n"
docs = { }
docs["shortdesc"] = "Fence agent for HP Brocade over telnet/ssh"
docs["longdesc"] = "fence_brocade is an I/O Fencing agent which can be used with Brocade FC switches. \
It logs into a Brocade switch via telnet and disables a specified port. Disabling the port which a machine is \
connected to effectively fences that machine. Lengthy telnet connections to the switch should be avoided while \
a GFS cluster is running because the connection will block any necessary fencing actions. \
\
After a fence operation has taken place the fenced machine can no longer connect to the Brocade FC switch. \
When the fenced machine is ready to be brought back into the GFS cluster (after reboot) the port on the Brocade \
FC switch needs to be enabled. This can be done by running fence_brocade and specifying the enable action"
docs["vendorurl"] = "http://www.brocade.com"
show_docs(options, docs)
##
## Operate the fencing device
####
conn = fence_login(options)
result = fence_action(conn, options, set_power_status, get_power_status, None)
##
## Logout from system
##
## In some special unspecified cases it is possible that
## connection will be closed before we run close(). This is not
## a problem because everything is checked before.
######
try:
conn.send_eol("exit")
conn.close()
except:
pass
sys.exit(result)
if __name__ == "__main__":
main()

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