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fence_lpar.py
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fence_lpar.py
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#!@PYTHON@ -tt
#####
##
## The Following Agent Has Been Tested On:
##
## Version
## +---------------------------------------------+
## Tested on HMC
##
#####
import sys, re
import atexit
import logging
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
from fencing import fail, fail_usage, EC_STATUS_HMC
##
## Transformation to standard ON/OFF status if possible
def _normalize_status(status):
if status in ["Running", "Open Firmware", "Shutting Down", "Starting"]:
status = "on"
else:
status = "off"
return status
def get_power_status(conn, options):
if options["--hmc-version"] == "3":
command = "lssyscfg -r lpar -m " + options["--managed"] + " -n " + options["--plug"] + " -F name,state\n"
elif options["--hmc-version"] in ["4", "IVM"]:
command = "lssyscfg -r lpar -m "+ options["--managed"] + \
" --filter 'lpar_names=" + options["--plug"] + "'\n"
else:
# Bad HMC Version cannot be reached
fail(EC_STATUS_HMC)
conn.send(command)
# First line (command) may cause parsing issues if long
conn.readline()
conn.log_expect(options["--command-prompt"], int(options["--power-timeout"]))
try:
if options["--hmc-version"] == "3":
status = re.compile("^" + options["--plug"] + ",(.*?),.*$",
re.IGNORECASE | re.MULTILINE).search(conn.before).group(1)
elif options["--hmc-version"] in ["4", "IVM"]:
status = re.compile(",state=(.*?),", re.IGNORECASE).search(conn.before).group(1)
except AttributeError as e:
logging.debug("Command on HMC failed: {}\n{}".format(command, str(e)))
fail(EC_STATUS_HMC)
return _normalize_status(status)
def is_comanaged(conn, options):
conn.send("lscomgmt -m " + options["--managed"] + "\n" )
conn.readline()
conn.log_expect(options["--command-prompt"], int(options["--power-timeout"]))
try:
cm = re.compile(",curr_master_mtms=(.*?),", re.IGNORECASE).search(conn.before).group(1)
except AttributeError as e:
cm = False
return cm
def set_power_status(conn, options):
if options["--hmc-version"] == "3":
conn.send("chsysstate -o " + options["--action"] + " -r lpar -m " + options["--managed"]
+ " -n " + options["--plug"] + "\n")
# First line (command) may cause parsing issues if long
conn.readline()
conn.log_expect(options["--command-prompt"], int(options["--power-timeout"]))
elif options["--hmc-version"] in ["4", "IVM"]:
if options["--action"] == "on":
if is_comanaged(conn, options):
profile = ""
else:
profile = " -f `lssyscfg -r lpar -F curr_profile " + \
" -m " + options["--managed"] + \
" --filter \"lpar_names=" + options["--plug"] + "\"`"
conn.send("chsysstate -o on -r lpar" +
" -m " + options["--managed"] +
" -n " + options["--plug"] +
profile +
"\n")
else:
conn.send("chsysstate -o shutdown -r lpar --immed" +
" -m " + options["--managed"] + " -n " + options["--plug"] + "\n")
# First line (command) may cause parsing issues if long
conn.readline()
conn.log_expect(options["--command-prompt"], int(options["--power-timeout"]))
def get_lpar_list(conn, options):
outlets = {}
if options["--hmc-version"] == "3":
conn.send("query_partition_names -m " + options["--managed"] + "\n")
## We have to remove first line (command)
conn.readline()
conn.log_expect(options["--command-prompt"], int(options["--power-timeout"]))
## We have to remove next 2 lines (header) and last line (part of new prompt)
####
res = re.search("^(.+?\n){2}(.*)\n.*$", conn.before, re.S)
if res == None:
fail_usage("Unable to parse output of list command")
lines = res.group(2).split("\n")
for outlet_line in lines:
outlets[outlet_line.rstrip()] = ("", "")
elif options["--hmc-version"] in ["4", "IVM"]:
sep = ":" if options["--hmc-version"] == "4" else ","
conn.send("lssyscfg -r lpar -m " + options["--managed"] +
" -F name" + sep + "state\n")
## We have to remove first line (command)
conn.readline()
conn.log_expect(options["--command-prompt"], int(options["--power-timeout"]))
## We have to remove last line (part of new prompt)
####
res = re.search("^(.*)\n.*$", conn.before, re.S)
if res == None:
fail_usage("Unable to parse output of list command")
lines = res.group(1).split("\n")
for outlet_line in lines:
try:
(port, status) = outlet_line.rstrip().split(sep)
except ValueError:
fail_usage('Output does not match expected HMC version, try different one');
outlets[port] = ("", _normalize_status(status))
return outlets
def define_new_opts():
all_opt["managed"] = {
"getopt" : "s:",
"longopt" : "managed",
"help" : "-s, --managed=[id] Name of the managed system",
"required" : "1",
"shortdesc" : "Managed system name",
"order" : 1}
all_opt["hmc_version"] = {
"getopt" : "H:",
"longopt" : "hmc-version",
"help" : "-H, --hmc-version=[version] Force HMC version to use: (3|4|ivm) (default: 4)",
"required" : "0",
"shortdesc" : "Force HMC version to use",
"default" : "4",
"choices" : ["3", "4", "ivm"],
"order" : 1}
def main():
device_opt = ["ipaddr", "login", "passwd", "secure", "cmd_prompt", \
"port", "managed", "hmc_version"]
atexit.register(atexit_handler)
define_new_opts()
all_opt["login_timeout"]["default"] = "15"
all_opt["secure"]["default"] = "1"
all_opt["cmd_prompt"]["default"] = [r":~>", r"]\$", r"\$ "]
options = check_input(device_opt, process_input(device_opt), other_conditions = True)
docs = {}
docs["shortdesc"] = "Fence agent for IBM LPAR"
docs["longdesc"] = ""
docs["vendorurl"] = "http://www.ibm.com"
show_docs(options, docs)
if "--managed" not in options:
fail_usage("Failed: You have to enter name of managed system")
if options["--action"] == "validate-all":
sys.exit(0)
##
## Operate the fencing device
####
conn = fence_login(options)
result = fence_action(conn, options, set_power_status, get_power_status, get_lpar_list)
fence_logout(conn, "quit\r\n")
sys.exit(result)
if __name__ == "__main__":
main()

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