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fence_amt.py
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#!@PYTHON@ -tt
import sys, re, os
import atexit
from pipes import quote
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
from fencing import fail_usage, is_executable, run_command, run_delay
def get_power_status(_, options):
output = amt_run_command(options, create_command(options, "status"))
match = re.search('Powerstate:[\\s]*(..)', str(output))
status = match.group(1) if match else None
if status == None:
return "fail"
elif status == "S0": # SO = on; S3 = sleep; S5 = off
return "on"
else:
return "off"
def set_power_status(_, options):
amt_run_command(options, create_command(options, options["--action"]))
return
def reboot_cycle(_, options):
(status, _, _) = run_command(options, create_command(options, "cycle"))
return not bool(status)
def amt_run_command(options, command, timeout=None):
env = os.environ.copy()
x = quote(options["--password"])
x = x[:-1] if x.endswith("'") else x
x = x[1:] if x.startswith("'") else x
env["AMT_PASSWORD"] = x
# This is needed because setting the AMT_PASSWORD env
# variable only works when no pipe is involved. E.g.:
# - Broken:
# $ AMT_PASSWORD='foobar' echo 'y' | /usr/bin/amttool nuc2 powerdown
# 401 Unauthorized at /usr/bin/amttool line 129.
# - Working:
# $ AMT_PASSWORD='foobar' sh -c "(echo 'y' | /usr/bin/amttool nuc2 powerdown)"
# execute: powerdown
# result: pt_status: success
newcommand = "sh -c \"(%s)\"" % command
return run_command(options, newcommand, timeout, env)
def create_command(options, action):
cmd = options["--amttool-path"]
# --ip / -a
cmd += " " + options["--ip"]
# --action / -o
if action == "status":
cmd += " info"
elif action == "on":
cmd = "echo \"y\"|" + cmd
cmd += " powerup"
elif action == "off":
cmd = "echo \"y\"|" + cmd
cmd += " powerdown"
elif action == "cycle":
cmd = "echo \"y\"|" + cmd
cmd += " powercycle"
if action in ["on", "off", "cycle"] and "--boot-option" in options:
cmd += options["--boot-option"]
# --use-sudo / -d
if "--use-sudo" in options:
cmd = options["--sudo-path"] + " " + cmd
return cmd
def define_new_opts():
all_opt["boot_option"] = {
"getopt" : "b:",
"longopt" : "boot-option",
"help" : "-b, --boot-option=[option] "
"Change the default boot behavior of the machine. (pxe|hd|hdsafe|cd|diag)",
"required" : "0",
"shortdesc" : "Change the default boot behavior of the machine.",
"choices" : ["pxe", "hd", "hdsafe", "cd", "diag"],
"order" : 1
}
all_opt["amttool_path"] = {
"getopt" : ":",
"longopt" : "amttool-path",
"help" : "--amttool-path=[path] Path to amttool binary",
"required" : "0",
"shortdesc" : "Path to amttool binary",
"default" : "@AMTTOOL_PATH@",
"order": 200
}
def main():
atexit.register(atexit_handler)
device_opt = ["ipaddr", "no_login", "passwd", "boot_option", "no_port",
"sudo", "amttool_path", "method"]
define_new_opts()
all_opt["ipport"]["default"] = "16994"
options = check_input(device_opt, process_input(device_opt))
docs = {}
docs["shortdesc"] = "Fence agent for AMT"
docs["longdesc"] = "fence_amt is an I/O Fencing agent \
which can be used with Intel AMT. This agent calls support software amttool\
(http://www.kraxel.org/cgit/amtterm/)."
docs["vendorurl"] = "http://www.intel.com/"
show_docs(options, docs)
run_delay(options)
if not is_executable(options["--amttool-path"]):
fail_usage("Amttool not found or not accessible")
result = fence_action(None, options, set_power_status, get_power_status, None, reboot_cycle)
sys.exit(result)
if __name__ == "__main__":
main()

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