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fence_netio.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=""
REDHAT_COPYRIGHT=""
BUILD_DATE=""
#END_VERSION_GENERATION
def get_power_status(conn, options):
conn.send_eol("port %s" % options["--plug"])
re_status = re.compile("250 [01imt]")
conn.log_expect(options, re_status, int(options["--shell-timeout"]))
status = {
"0" : "off",
"1" : "on",
"i" : "reboot",
"m" : "manual",
"t" : "timer"
}[conn.after.split()[1]]
return status
def set_power_status(conn, options):
action = {
"on" : "1",
"off" : "0",
"reboot" : "i"
}[options["--action"]]
conn.send_eol("port %s %s" % (options["--plug"], action))
conn.log_expect(options, "250 OK", int(options["--shell-timeout"]))
def get_outlet_list(conn, options):
result = {}
try:
# the NETIO-230B has 4 ports, counting start at 1
for plug in ["1", "2", "3", "4"]:
conn.send_eol("port setup %s" % plug)
conn.log_expect(options, "250 .+", int(options["--shell-timeout"]))
# the name is enclosed in "", drop those with [1:-1]
name = conn.after.split()[1][1:-1]
result[plug] = (name, "unknown")
except Exception, exn:
print str(exn)
return result
def main():
device_opt = [ "ipaddr", "login", "passwd", "port" ]
atexit.register(atexit_handler)
opt = process_input(device_opt)
# set default port for telnet only
if 0 == opt.has_key("--ipport"):
opt["--ipport"] = "1234"
opt["eol"] = "\r\n"
options = check_input(device_opt, opt)
docs = { }
docs["shortdesc"] = "I/O Fencing agent for Koukaam NETIO-230B"
docs["longdesc"] = "fence_netio is an I/O Fencing agent which can be \
used with the Koukaam NETIO-230B Power Distribution Unit. It logs into \
device via telnet and reboots a specified outlet. Lengthy telnet connections \
should be avoided while a GFS cluster is running because the connection will \
block any necessary fencing actions."
docs["vendorurl"] = "http://www.koukaam.se/"
show_docs(options, docs)
##
## Operate the fencing device
## We can not use fence_login(), username and passwd are sent on one line
####
try:
try:
conn = fspawn(options, TELNET_PATH)
conn.send("set binary\n")
conn.send("open %s -%s\n"%(options["--ip"], options["--ipport"]))
except pexpect.ExceptionPexpect, ex:
sys.stderr.write(str(ex) + "\n")
sys.stderr.write("Due to limitations, binary dependencies on fence agents "
"are not in the spec file and must be installed separately." + "\n")
sys.exit(EC_GENERIC_ERROR)
screen = conn.read_nonblocking(size=100, timeout=int(options["--shell-timeout"]))
conn.log_expect(options, "100 HELLO .*", int(options["--shell-timeout"]))
conn.send_eol("login %s %s" % (options["--username"], options["--password"]))
conn.log_expect(options, "250 OK", int(options["--shell-timeout"]))
except pexpect.EOF:
fail(EC_LOGIN_DENIED)
except pexpect.TIMEOUT:
fail(EC_LOGIN_DENIED)
result = fence_action(conn, options, set_power_status, get_power_status, get_outlet_list)
##
## 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("quit\n")
conn.log_expect(options, "110 BYE", int(options["--shell-timeout"]))
conn.close()
except:
pass
sys.exit(result)
if __name__ == "__main__":
main()

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