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fence_brocade.py
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fence_brocade.py
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#!/usr/bin/python -tt
import sys, re
import atexit
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
from fencing import fail, EC_STATUS
#BEGIN_VERSION_GENERATION
RELEASE_VERSION="New Brocade Agent - test release on steroids"
REDHAT_COPYRIGHT=""
BUILD_DATE="March, 20013"
#END_VERSION_GENERATION
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 get_power_status(conn, options):
line_re = re.compile(r'=========', re.IGNORECASE)
outlets = {}
in_index = False
conn.send_eol("switchshow")
conn.log_expect(options, options["--command-prompt"], int(options["--power-timeout"]))
for line in str(conn.before).split("\n"):
if line_re.search(line):
in_index = True
elif in_index and line.lstrip()[0].isdigit():
tokens = line.lstrip().split()
status = "off" if len(tokens) > 7 and tokens[7] == "Disabled" else "on"
outlets[tokens[0]] = ("", status)
if ["list", "monitor"].count(options["--action"]) == 0:
(_, status) = outlets[options["--plug"]]
return status
else:
return outlets
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, get_power_status)
fence_logout(conn, "exit")
sys.exit(result)
if __name__ == "__main__":
main()

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