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Copy pathcloud-setup-baremetal
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executable file
·243 lines (192 loc) · 6.76 KB
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#!/usr/bin/python3
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import sys, os
from subprocess import PIPE, Popen
import logging
import traceback
from os.path import exists, join
from signal import alarm, signal, SIGALRM, SIGKILL
class CloudRuntimeException(Exception):
def __init__(self, errMsg):
self.errMsg = errMsg
def __str__(self):
return self.errMsg
def formatExceptionInfo(maxTBlevel=5):
cla, exc, trbk = sys.exc_info()
excTb = traceback.format_tb(trbk, maxTBlevel)
msg = str(exc) + "\n"
for tb in excTb:
msg += tb
return msg
class bash:
def __init__(self, args, timeout=600):
self.args = args
logging.debug("execute:%s" % args)
self.timeout = timeout
self.process = None
self.success = False
self.run()
def run(self):
class Alarm(Exception):
pass
def alarm_handler(signum, frame):
raise Alarm
try:
self.process = Popen(self.args, shell=True, stdout=PIPE, stderr=PIPE)
if self.timeout != -1:
signal(SIGALRM, alarm_handler)
alarm(self.timeout)
try:
self.stdout, self.stderr = self.process.communicate()
if self.timeout != -1:
alarm(0)
except Alarm:
os.kill(self.process.pid, SIGKILL)
raise CloudRuntimeException("Timeout during command execution")
self.success = self.process.returncode == 0
except:
raise CloudRuntimeException(formatExceptionInfo())
# if not self.success:
# raise CloudRuntimeException(self.getStderr())
def isSuccess(self):
return self.success
def getStdout(self):
return self.stdout.strip("\n")
def getLines(self):
return self.stdout.split("\n")
def getStderr(self):
return self.stderr.strip("\n")
def initLoging(logFile=None):
try:
if logFile is None:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(filename=logFile, level=logging.DEBUG)
except:
logging.basicConfig(level=logging.DEBUG)
def writeProgressBar(msg, result=None):
if msg is not None:
output = "%-80s" % msg
elif result is True:
output = "[ \033[92m%-2s\033[0m ]\n" % "OK"
elif result is False:
output = "[ \033[91m%-6s\033[0m ]\n" % "FAILED"
sys.stdout.write(output)
sys.stdout.flush()
def printError(msg):
sys.stderr.write(msg)
sys.stderr.write("\n")
sys.stderr.flush()
def printMsg(msg):
sys.stdout.write(msg + "\n")
sys.stdout.flush()
def checkRpm(pkgName):
chkPkg = bash("rpm -q %s" % pkgName)
writeProgressBar("Checking %s" % pkgName, None)
if not chkPkg.isSuccess():
writeProgressBar(None, False)
printError(
"%s is not found, please make sure it is installed. You may try 'yum install %s'\n"
% (pkgName, pkgName)
)
return False
else:
writeProgressBar(None, True)
return True
def checkEnv():
writeProgressBar("Checking is root")
ret = bash("whoami")
if ret.getStdout() != "root":
writeProgressBar(None, False)
printError("This script must run as root")
return False
else:
writeProgressBar(None, True)
pkgList = ["tftp-server", "syslinux", "xinetd", "chkconfig", "dhcp"]
for pkg in pkgList:
if not checkRpm(pkg):
return False
return True
def exitIfFail(ret):
if not ret:
sys.exit(1)
def bashWithResult(cmd):
writeProgressBar("Executing '%s'" % cmd)
ret = bash(cmd)
if not ret.isSuccess():
writeProgressBar(None, False)
writeProgressBar(ret.getStderr() + "\n")
return False
else:
writeProgressBar(None, True)
return True
def configurePxeStuff():
stuff = ["tftp", "xinetd", "dhcpd"]
cmds = ["chkconfig --level 345 %s on" % i for i in stuff]
cmds.append("/etc/init.d/xinetd restart")
for cmd in cmds:
if not bashWithResult(cmd):
return False
chkIptable = bash("chkconfig --list iptables")
if "on" in chkIptable.getStdout():
printMsg("Detected iptables is running, need to open tftp port 69")
if not bashWithResult("iptables -I INPUT 1 -p udp --dport 69 -j ACCEPT"):
return False
if not bashWithResult("/etc/init.d/iptables save"):
return False
return True
def getTftpRootDir(tftpRootDirList):
tftpRoot = bash("cat /etc/xinetd.d/tftp | grep server_args")
if not tftpRoot.isSuccess():
printError(
"Cannot get tftp root directory from /etc/xinetd.d/tftp, here may be something wrong with your tftp-server, try reinstall it\n"
)
return False
tftpRootDir = tftpRoot.getStdout()
index = tftpRootDir.find("/")
if index == -1:
printError("Wrong server_arg in /etc/xinetd.d/tftp (%s)" % tftpRootDir)
return False
tftpRootDir = tftpRootDir[index:]
tftpRootDirList.append(tftpRootDir)
return True
def preparePING(tftpRootDir):
pingFiles = ["boot.msg", "initrd.gz", "kernel", "pxelinux.0"]
pingDir = "/usr/share/PING"
for f in pingFiles:
path = join(pingDir, f)
if not exists(path):
printError("Cannot find %s, please make sure PING-3.01 is installed" % path)
return False
if not bashWithResult("cp -f %s %s" % (path, tftpRootDir)):
return False
if not bashWithResult("mkdir -p %s/pxelinux.cfg" % tftpRootDir):
return False
return True
if __name__ == "__main__":
initLoging("/tmp/cloud-setup-baremetal.log")
tftpRootDirList = []
exitIfFail(checkEnv())
exitIfFail(configurePxeStuff())
exitIfFail(getTftpRootDir(tftpRootDirList))
tftpRootDir = tftpRootDirList[0].strip()
exitIfFail(preparePING(tftpRootDir))
printMsg("")
printMsg("Setup BareMetal PXE server successfully")
printMsg("TFTP root directory is: %s\n" % tftpRootDir)
sys.exit(0)