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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2006, 2007 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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|
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"""Burnin program |
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|
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""" |
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|
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import os |
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import sys |
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import optparse |
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import time |
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import socket |
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import urllib2 |
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import errno |
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from itertools import izip, islice, cycle |
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from cStringIO import StringIO |
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|
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from ganeti import opcodes |
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from ganeti import mcpu |
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from ganeti import constants |
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from ganeti import cli |
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from ganeti import errors |
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from ganeti import utils |
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|
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|
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USAGE = ("\tburnin -o OS_NAME [options...] instance_name ...") |
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|
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|
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class InstanceDown(Exception): |
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"""The checked instance was not up""" |
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|
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|
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def Usage(): |
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"""Shows program usage information and exits the program.""" |
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|
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print >> sys.stderr, "Usage:" |
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print >> sys.stderr, USAGE |
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sys.exit(2) |
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|
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|
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def Log(msg): |
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"""Simple function that prints out its argument. |
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|
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""" |
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print msg |
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sys.stdout.flush() |
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|
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|
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class Burner(object): |
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"""Burner class.""" |
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|
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def __init__(self): |
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"""Constructor.""" |
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utils.SetupLogging(constants.LOG_BURNIN, debug=False, stderr_logging=True) |
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self._feed_buf = StringIO() |
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self.nodes = [] |
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self.instances = [] |
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self.to_rem = [] |
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self.opts = None |
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self.cl = cli.GetClient() |
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self.ParseOptions() |
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self.GetState() |
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|
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def ClearFeedbackBuf(self): |
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"""Clear the feedback buffer.""" |
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self._feed_buf.truncate(0) |
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|
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def GetFeedbackBuf(self): |
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"""Return the contents of the buffer.""" |
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return self._feed_buf.getvalue() |
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|
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def Feedback(self, msg): |
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"""Acumulate feedback in our buffer.""" |
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self._feed_buf.write("%s %s\n" % (time.ctime(utils.MergeTime(msg[0])), |
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msg[2])) |
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if self.opts.verbose: |
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Log(msg) |
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|
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def ExecOp(self, op): |
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"""Execute an opcode and manage the exec buffer.""" |
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self.ClearFeedbackBuf() |
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return cli.SubmitOpCode(op, feedback_fn=self.Feedback, cl=self.cl) |
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|
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def ExecJobSet(self, jobs): |
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"""Execute a set of jobs and return once all are done. |
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|
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The method will return the list of results, if all jobs are |
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successfull. Otherwise, OpExecError will be raised from within |
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cli.py. |
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|
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""" |
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self.ClearFeedbackBuf() |
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job_ids = [cli.SendJob(job, cl=self.cl) for job in jobs] |
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Log("- Submitted job IDs %s" % ", ".join(job_ids)) |
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results = [] |
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for jid in job_ids: |
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Log("- Waiting for job %s" % jid) |
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results.append(cli.PollJob(jid, cl=self.cl, feedback_fn=self.Feedback)) |
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|
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return results |
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|
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def ParseOptions(self): |
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"""Parses the command line options. |
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|
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In case of command line errors, it will show the usage and exit the |
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program. |
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|
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""" |
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|
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parser = optparse.OptionParser(usage="\n%s" % USAGE, |
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version="%%prog (ganeti) %s" % |
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constants.RELEASE_VERSION, |
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option_class=cli.CliOption) |
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|
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parser.add_option("-o", "--os", dest="os", default=None, |
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help="OS to use during burnin", |
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metavar="<OS>") |
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parser.add_option("--disk-size", dest="disk_size", |
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help="Disk size (determines disk count)", |
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default="128m", type="string", metavar="<size,size,...>") |
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parser.add_option("--disk-growth", dest="disk_growth", help="Disk growth", |
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default="128m", type="string", metavar="<size,size,...>") |
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parser.add_option("--mem-size", dest="mem_size", help="Memory size", |
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default=128, type="unit", metavar="<size>") |
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parser.add_option("-v", "--verbose", |
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action="store_true", dest="verbose", default=False, |
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help="print command execution messages to stdout") |
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parser.add_option("--no-replace1", dest="do_replace1", |
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help="Skip disk replacement with the same secondary", |
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action="store_false", default=True) |
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parser.add_option("--no-replace2", dest="do_replace2", |
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help="Skip disk replacement with a different secondary", |
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action="store_false", default=True) |
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parser.add_option("--no-failover", dest="do_failover", |
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help="Skip instance failovers", action="store_false", |
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default=True) |
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parser.add_option("--no-importexport", dest="do_importexport", |
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help="Skip instance export/import", action="store_false", |
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default=True) |
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parser.add_option("--no-startstop", dest="do_startstop", |
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help="Skip instance stop/start", action="store_false", |
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default=True) |
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parser.add_option("--no-reinstall", dest="do_reinstall", |
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help="Skip instance reinstall", action="store_false", |
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default=True) |
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parser.add_option("--no-reboot", dest="do_reboot", |
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help="Skip instance reboot", action="store_false", |
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default=True) |
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parser.add_option("--no-activate-disks", dest="do_activate_disks", |
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help="Skip disk activation/deactivation", |
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action="store_false", default=True) |
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parser.add_option("--no-add-disks", dest="do_addremove_disks", |
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help="Skip disk addition/removal", |
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action="store_false", default=True) |
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parser.add_option("--no-add-nics", dest="do_addremove_nics", |
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help="Skip NIC addition/removal", |
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action="store_false", default=True) |
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parser.add_option("--no-nics", dest="nics", |
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help="No network interfaces", action="store_const", |
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const=[], default=[{}]) |
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parser.add_option("--rename", dest="rename", default=None, |
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help="Give one unused instance name which is taken" |
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" to start the renaming sequence", |
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metavar="<instance_name>") |
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parser.add_option("-t", "--disk-template", dest="disk_template", |
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choices=("diskless", "file", "plain", "drbd"), |
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default="drbd", |
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help="Disk template (diskless, file, plain or drbd)" |
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" [drbd]") |
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parser.add_option("-n", "--nodes", dest="nodes", default="", |
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help="Comma separated list of nodes to perform" |
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" the burnin on (defaults to all nodes)") |
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parser.add_option("--iallocator", dest="iallocator", |
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default=None, type="string", |
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help="Perform the allocation using an iallocator" |
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" instead of fixed node spread (node restrictions no" |
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" longer apply, therefore -n/--nodes must not be used") |
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parser.add_option("-p", "--parallel", default=False, action="store_true", |
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dest="parallel", |
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help="Enable parallelization of some operations in" |
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" order to speed burnin or to test granular locking") |
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parser.add_option("--net-timeout", default=15, type="int", |
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dest="net_timeout", |
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help="The instance check network timeout in seconds" |
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" (defaults to 15 seconds)") |
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parser.add_option("-C", "--http-check", default=False, action="store_true", |
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dest="http_check", |
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help="Enable checking of instance status via http," |
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" looking for /hostname.txt that should contain the" |
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" name of the instance") |
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|
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|
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options, args = parser.parse_args() |
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if len(args) < 1 or options.os is None: |
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Usage() |
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|
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supported_disk_templates = (constants.DT_DISKLESS, |
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constants.DT_FILE, |
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constants.DT_PLAIN, |
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constants.DT_DRBD8) |
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if options.disk_template not in supported_disk_templates: |
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Log("Unknown disk template '%s'" % options.disk_template) |
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sys.exit(1) |
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|
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if options.disk_template == constants.DT_DISKLESS: |
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disk_size = disk_growth = [] |
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options.do_addremove_disks = False |
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else: |
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disk_size = [utils.ParseUnit(v) for v in options.disk_size.split(",")] |
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disk_growth = [utils.ParseUnit(v) |
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for v in options.disk_growth.split(",")] |
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if len(disk_growth) != len(disk_size): |
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Log("Wrong disk sizes/growth combination") |
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sys.exit(1) |
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if ((disk_size and options.disk_template == constants.DT_DISKLESS) or |
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(not disk_size and options.disk_template != constants.DT_DISKLESS)): |
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Log("Wrong disk count/disk template combination") |
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sys.exit(1) |
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|
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self.disk_size = disk_size |
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self.disk_growth = disk_growth |
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self.disk_count = len(disk_size) |
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|
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if options.nodes and options.iallocator: |
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Log("Give either the nodes option or the iallocator option, not both") |
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sys.exit(1) |
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|
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self.opts = options |
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self.instances = args |
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self.bep = { |
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constants.BE_MEMORY: options.mem_size, |
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constants.BE_VCPUS: 1, |
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} |
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self.hvp = {} |
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|
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socket.setdefaulttimeout(options.net_timeout) |
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|
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def GetState(self): |
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"""Read the cluster state from the config.""" |
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if self.opts.nodes: |
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names = self.opts.nodes.split(",") |
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else: |
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names = [] |
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try: |
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op = opcodes.OpQueryNodes(output_fields=["name", "offline"], names=names) |
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result = self.ExecOp(op) |
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except errors.GenericError, err: |
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err_code, msg = cli.FormatError(err) |
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Log(msg) |
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sys.exit(err_code) |
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self.nodes = [data[0] for data in result if not data[1]] |
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|
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result = self.ExecOp(opcodes.OpDiagnoseOS(output_fields=["name", "valid"], |
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names=[])) |
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|
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if not result: |
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Log("Can't get the OS list") |
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sys.exit(1) |
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|
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# filter non-valid OS-es |
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os_set = [val[0] for val in result if val[1]] |
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|
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if self.opts.os not in os_set: |
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Log("OS '%s' not found" % self.opts.os) |
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sys.exit(1) |
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|
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def CreateInstances(self): |
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"""Create the given instances. |
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|
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""" |
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self.to_rem = [] |
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mytor = izip(cycle(self.nodes), |
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islice(cycle(self.nodes), 1, None), |
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self.instances) |
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jobset = [] |
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|
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for pnode, snode, instance in mytor: |
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if self.opts.iallocator: |
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pnode = snode = None |
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Log("- Add instance %s (iallocator: %s)" % |
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(instance, self.opts.iallocator)) |
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elif self.opts.disk_template not in constants.DTS_NET_MIRROR: |
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snode = None |
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Log("- Add instance %s on node %s" % (instance, pnode)) |
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else: |
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Log("- Add instance %s on nodes %s/%s" % (instance, pnode, snode)) |
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|
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op = opcodes.OpCreateInstance(instance_name=instance, |
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disks = [ {"size": size} |
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for size in self.disk_size], |
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disk_template=self.opts.disk_template, |
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nics=self.opts.nics, |
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mode=constants.INSTANCE_CREATE, |
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os_type=self.opts.os, |
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pnode=pnode, |
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snode=snode, |
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start=True, |
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ip_check=True, |
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wait_for_sync=True, |
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file_driver="loop", |
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file_storage_dir=None, |
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iallocator=self.opts.iallocator, |
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beparams=self.bep, |
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hvparams=self.hvp, |
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) |
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|
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if self.opts.parallel: |
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jobset.append([op]) |
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# FIXME: here we should not append to to_rem uncoditionally, |
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# but only when the job is successful |
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self.to_rem.append(instance) |
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else: |
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self.ExecOp(op) |
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self.to_rem.append(instance) |
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if self.opts.parallel: |
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self.ExecJobSet(jobset) |
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|
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for instance in self.instances: |
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self._CheckInstanceAlive(instance) |
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|
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def GrowDisks(self): |
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"""Grow both the os and the swap disks by the requested amount, if any.""" |
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for instance in self.instances: |
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for idx, growth in enumerate(self.disk_growth): |
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if growth > 0: |
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op = opcodes.OpGrowDisk(instance_name=instance, disk=idx, |
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amount=growth, wait_for_sync=True) |
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Log("- Increase %s's disk/%s by %s MB" % (instance, idx, growth)) |
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self.ExecOp(op) |
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|
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def ReplaceDisks1D8(self): |
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"""Replace disks on primary and secondary for drbd8.""" |
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for instance in self.instances: |
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for mode in constants.REPLACE_DISK_SEC, constants.REPLACE_DISK_PRI: |
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op = opcodes.OpReplaceDisks(instance_name=instance, |
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mode=mode, |
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disks=[i for i in range(self.disk_count)]) |
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Log("- Replace disks (%s) for instance %s" % (mode, instance)) |
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self.ExecOp(op) |
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|
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def ReplaceDisks2(self): |
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"""Replace secondary node.""" |
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mode = constants.REPLACE_DISK_CHG |
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|
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mytor = izip(islice(cycle(self.nodes), 2, None), |
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self.instances) |
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for tnode, instance in mytor: |
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if self.opts.iallocator: |
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tnode = None |
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op = opcodes.OpReplaceDisks(instance_name=instance, |
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mode=mode, |
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remote_node=tnode, |
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iallocator=self.opts.iallocator, |
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disks=[i for i in range(self.disk_count)]) |
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Log("- Replace secondary (%s) for instance %s" % (mode, instance)) |
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self.ExecOp(op) |
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|
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def Failover(self): |
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"""Failover the instances.""" |
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|
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for instance in self.instances: |
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op = opcodes.OpFailoverInstance(instance_name=instance, |
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ignore_consistency=False) |
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|
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Log("- Failover instance %s" % (instance)) |
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self.ExecOp(op) |
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for instance in self.instances: |
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self._CheckInstanceAlive(instance) |
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|
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def ImportExport(self): |
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"""Export the instance, delete it, and import it back. |
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|
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""" |
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|
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mytor = izip(cycle(self.nodes), |
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islice(cycle(self.nodes), 1, None), |
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islice(cycle(self.nodes), 2, None), |
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self.instances) |
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|
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for pnode, snode, enode, instance in mytor: |
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|
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if self.opts.iallocator: |
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pnode = snode = None |
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import_log_msg = ("- Import instance %s from node %s" |
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" (iallocator: %s)" % |
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(instance, enode, self.opts.iallocator)) |
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elif self.opts.disk_template not in constants.DTS_NET_MIRROR: |
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snode = None |
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import_log_msg = ("- Import instance %s from node %s to node %s" % |
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(instance, enode, pnode)) |
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else: |
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import_log_msg = ("- Import instance %s from node %s to nodes %s/%s" % |
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(instance, enode, pnode, snode)) |
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|
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exp_op = opcodes.OpExportInstance(instance_name=instance, |
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target_node=enode, |
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shutdown=True) |
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rem_op = opcodes.OpRemoveInstance(instance_name=instance, |
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ignore_failures=True) |
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nam_op = opcodes.OpQueryInstances(output_fields=["name"], |
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names=[instance]) |
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full_name = self.ExecOp(nam_op)[0][0] |
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imp_dir = os.path.join(constants.EXPORT_DIR, full_name) |
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imp_op = opcodes.OpCreateInstance(instance_name=instance, |
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disks = [ {"size": size} |
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for size in self.disk_size], |
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disk_template=self.opts.disk_template, |
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nics=self.opts.nics, |
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mode=constants.INSTANCE_IMPORT, |
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src_node=enode, |
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src_path=imp_dir, |
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pnode=pnode, |
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snode=snode, |
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start=True, |
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ip_check=True, |
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wait_for_sync=True, |
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file_storage_dir=None, |
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file_driver="loop", |
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iallocator=self.opts.iallocator, |
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beparams=self.bep, |
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hvparams=self.hvp, |
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) |
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|
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erem_op = opcodes.OpRemoveExport(instance_name=instance) |
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|
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Log("- Export instance %s to node %s" % (instance, enode)) |
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self.ExecOp(exp_op) |
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Log("- Remove instance %s" % (instance)) |
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self.ExecOp(rem_op) |
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self.to_rem.remove(instance) |
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Log(import_log_msg) |
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self.ExecOp(imp_op) |
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Log("- Remove export of instance %s" % (instance)) |
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self.ExecOp(erem_op) |
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|
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self.to_rem.append(instance) |
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|
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for instance in self.instances: |
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self._CheckInstanceAlive(instance) |
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|
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def StopInstance(self, instance): |
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"""Stop given instance.""" |
461 |
op = opcodes.OpShutdownInstance(instance_name=instance) |
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Log("- Shutdown instance %s" % instance) |
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self.ExecOp(op) |
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|
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def StartInstance(self, instance): |
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"""Start given instance.""" |
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op = opcodes.OpStartupInstance(instance_name=instance, force=False) |
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Log("- Start instance %s" % instance) |
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self.ExecOp(op) |
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|
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def RenameInstance(self, instance, instance_new): |
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"""Rename instance.""" |
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op = opcodes.OpRenameInstance(instance_name=instance, |
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new_name=instance_new) |
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Log("- Rename instance %s to %s" % (instance, instance_new)) |
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self.ExecOp(op) |
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|
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def StopStart(self): |
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"""Stop/start the instances.""" |
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for instance in self.instances: |
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self.StopInstance(instance) |
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self.StartInstance(instance) |
483 |
|
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for instance in self.instances: |
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self._CheckInstanceAlive(instance) |
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|
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def Remove(self): |
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"""Remove the instances.""" |
489 |
for instance in self.to_rem: |
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op = opcodes.OpRemoveInstance(instance_name=instance, |
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ignore_failures=True) |
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Log("- Remove instance %s" % instance) |
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self.ExecOp(op) |
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|
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def Rename(self): |
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"""Rename the instances.""" |
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rename = self.opts.rename |
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for instance in self.instances: |
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self.StopInstance(instance) |
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self.RenameInstance(instance, rename) |
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self.StartInstance(rename) |
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self._CheckInstanceAlive(rename) |
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self.StopInstance(rename) |
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self.RenameInstance(rename, instance) |
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self.StartInstance(instance) |
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|
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for instance in self.instances: |
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self._CheckInstanceAlive(instance) |
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|
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def Reinstall(self): |
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"""Reinstall the instances.""" |
512 |
for instance in self.instances: |
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self.StopInstance(instance) |
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op = opcodes.OpReinstallInstance(instance_name=instance) |
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Log("- Reinstall instance %s without passing the OS" % (instance,)) |
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self.ExecOp(op) |
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op = opcodes.OpReinstallInstance(instance_name=instance, |
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os_type=self.opts.os) |
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Log("- Reinstall instance %s specifying the OS" % (instance,)) |
520 |
self.ExecOp(op) |
521 |
self.StartInstance(instance) |
522 |
for instance in self.instances: |
523 |
self._CheckInstanceAlive(instance) |
524 |
|
525 |
def Reboot(self): |
526 |
"""Reinstall the instances.""" |
527 |
for instance in self.instances: |
528 |
for reboot_type in constants.REBOOT_TYPES: |
529 |
op = opcodes.OpRebootInstance(instance_name=instance, |
530 |
reboot_type=reboot_type, |
531 |
ignore_secondaries=False) |
532 |
Log("- Reboot instance %s with type '%s'" % (instance, reboot_type)) |
533 |
self.ExecOp(op) |
534 |
self._CheckInstanceAlive(instance) |
535 |
|
536 |
def ActivateDisks(self): |
537 |
"""Activate and deactivate disks of the instances.""" |
538 |
for instance in self.instances: |
539 |
op_act = opcodes.OpActivateInstanceDisks(instance_name=instance) |
540 |
op_deact = opcodes.OpDeactivateInstanceDisks(instance_name=instance) |
541 |
Log("- Activate disks of online instance %s" % (instance,)) |
542 |
self.ExecOp(op_act) |
543 |
self.StopInstance(instance) |
544 |
Log("- Activate disks of offline instance %s" % (instance,)) |
545 |
self.ExecOp(op_act) |
546 |
Log("- Deactivate disks of offline instance %s" % (instance,)) |
547 |
self.ExecOp(op_deact) |
548 |
self.StartInstance(instance) |
549 |
for instance in self.instances: |
550 |
self._CheckInstanceAlive(instance) |
551 |
|
552 |
def AddRemoveDisks(self): |
553 |
"""Add and remove an extra disk for the instances.""" |
554 |
for instance in self.instances: |
555 |
op_add = opcodes.OpSetInstanceParams(\ |
556 |
instance_name=instance, |
557 |
disks=[(constants.DDM_ADD, {"size": self.disk_size[0]})]) |
558 |
op_rem = opcodes.OpSetInstanceParams(\ |
559 |
instance_name=instance, disks=[(constants.DDM_REMOVE, {})]) |
560 |
Log("- Adding a disk to instance %s" % (instance,)) |
561 |
self.ExecOp(op_add) |
562 |
self.StopInstance(instance) |
563 |
Log("- Removing the last disk of instance %s" % (instance,)) |
564 |
self.ExecOp(op_rem) |
565 |
self.StartInstance(instance) |
566 |
for instance in self.instances: |
567 |
self._CheckInstanceAlive(instance) |
568 |
|
569 |
def AddRemoveNICs(self): |
570 |
"""Add and remove an extra NIC for the instances.""" |
571 |
for instance in self.instances: |
572 |
op_add = opcodes.OpSetInstanceParams(\ |
573 |
instance_name=instance, nics=[(constants.DDM_ADD, {})]) |
574 |
op_rem = opcodes.OpSetInstanceParams(\ |
575 |
instance_name=instance, nics=[(constants.DDM_REMOVE, {})]) |
576 |
Log("- Adding a NIC to instance %s" % (instance,)) |
577 |
self.ExecOp(op_add) |
578 |
Log("- Removing the last NIC of instance %s" % (instance,)) |
579 |
self.ExecOp(op_rem) |
580 |
|
581 |
def _CheckInstanceAlive(self, instance): |
582 |
"""Check if an instance is alive by doing http checks. |
583 |
|
584 |
This will try to retrieve the url on the instance /hostname.txt |
585 |
and check that it contains the hostname of the instance. In case |
586 |
we get ECONNREFUSED, we retry up to the net timeout seconds, for |
587 |
any other error we abort. |
588 |
|
589 |
""" |
590 |
if not self.opts.http_check: |
591 |
return |
592 |
try: |
593 |
for retries in range(self.opts.net_timeout): |
594 |
try: |
595 |
url = urllib2.urlopen("http://%s/hostname.txt" % instance) |
596 |
except urllib2.URLError, err: |
597 |
if err.args[0][0] == errno.ECONNREFUSED: |
598 |
time.sleep(1) |
599 |
continue |
600 |
raise |
601 |
except urllib2.URLError, err: |
602 |
raise InstanceDown(instance, str(err)) |
603 |
hostname = url.read().strip() |
604 |
if hostname != instance: |
605 |
raise InstanceDown(instance, ("Hostname mismatch, expected %s, got %s" % |
606 |
(instance, hostname))) |
607 |
|
608 |
def BurninCluster(self): |
609 |
"""Test a cluster intensively. |
610 |
|
611 |
This will create instances and then start/stop/failover them. |
612 |
It is safe for existing instances but could impact performance. |
613 |
|
614 |
""" |
615 |
|
616 |
opts = self.opts |
617 |
|
618 |
Log("- Testing global parameters") |
619 |
|
620 |
if (len(self.nodes) == 1 and |
621 |
opts.disk_template not in (constants.DT_DISKLESS, constants.DT_PLAIN, |
622 |
constants.DT_FILE)): |
623 |
Log("When one node is available/selected the disk template must" |
624 |
" be 'diskless', 'file' or 'plain'") |
625 |
sys.exit(1) |
626 |
|
627 |
has_err = True |
628 |
try: |
629 |
self.CreateInstances() |
630 |
if opts.do_replace1 and opts.disk_template in constants.DTS_NET_MIRROR: |
631 |
self.ReplaceDisks1D8() |
632 |
if (opts.do_replace2 and len(self.nodes) > 2 and |
633 |
opts.disk_template in constants.DTS_NET_MIRROR) : |
634 |
self.ReplaceDisks2() |
635 |
|
636 |
if opts.disk_template != constants.DT_DISKLESS: |
637 |
self.GrowDisks() |
638 |
|
639 |
if opts.do_failover and opts.disk_template in constants.DTS_NET_MIRROR: |
640 |
self.Failover() |
641 |
|
642 |
if (opts.do_importexport and |
643 |
opts.disk_template not in (constants.DT_DISKLESS, |
644 |
constants.DT_FILE)): |
645 |
self.ImportExport() |
646 |
|
647 |
if opts.do_reinstall: |
648 |
self.Reinstall() |
649 |
|
650 |
if opts.do_reboot: |
651 |
self.Reboot() |
652 |
|
653 |
if opts.do_addremove_disks: |
654 |
self.AddRemoveDisks() |
655 |
|
656 |
if opts.do_addremove_nics: |
657 |
self.AddRemoveNICs() |
658 |
|
659 |
if opts.do_activate_disks: |
660 |
self.ActivateDisks() |
661 |
|
662 |
if opts.do_startstop: |
663 |
self.StopStart() |
664 |
|
665 |
if opts.rename: |
666 |
self.Rename() |
667 |
|
668 |
has_err = False |
669 |
finally: |
670 |
if has_err: |
671 |
Log("Error detected: opcode buffer follows:\n\n") |
672 |
Log(self.GetFeedbackBuf()) |
673 |
Log("\n\n") |
674 |
self.Remove() |
675 |
|
676 |
return 0 |
677 |
|
678 |
|
679 |
def main(): |
680 |
"""Main function""" |
681 |
|
682 |
burner = Burner() |
683 |
return burner.BurninCluster() |
684 |
|
685 |
|
686 |
if __name__ == "__main__": |
687 |
main() |