X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-web.git/blobdiff_plain/fdd0190bd048fbf1e211029d1876e064950caf8c..7463b0af6cda447f9ea69f42ceaf1494b7f92083:/code/main.py diff --git a/code/main.py b/code/main.py index 226a038..0edcb65 100755 --- a/code/main.py +++ b/code/main.py @@ -6,23 +6,17 @@ import cPickle import cgi import datetime import hmac +import os import random import sha -import simplejson import sys import time import urllib +import socket +import cherrypy +from cherrypy import _cperror from StringIO import StringIO -def revertStandardError(): - """Move stderr to stdout, and return the contents of the old stderr.""" - errio = sys.stderr - if not isinstance(errio, StringIO): - return '' - sys.stderr = sys.stdout - errio.seek(0) - return errio.read() - def printError(): """Revert stderr to stdout, and print the contents of stderr""" if isinstance(sys.stderr, StringIO): @@ -32,8 +26,6 @@ if __name__ == '__main__': import atexit atexit.register(printError) -import templates -from Cheetah.Template import Template import validation import cache_acls from webcommon import State @@ -44,68 +36,363 @@ from invirt.database import Machine, CDROM, session, connect, MachineAccess, Typ from invirt.config import structs as config from invirt.common import InvalidInput, CodeError -def pathSplit(path): - if path.startswith('/'): - path = path[1:] - i = path.find('/') - if i == -1: - i = len(path) - return path[:i], path[i:] +from view import View, revertStandardError + + +static_dir = os.path.join(os.path.dirname(__file__), 'static') +InvirtStatic = cherrypy.tools.staticdir.handler( + root=static_dir, + dir=static_dir, + section='/static') -class Checkpoint: +class InvirtUnauthWeb(View): + static = InvirtStatic + + @cherrypy.expose + @cherrypy.tools.mako(filename="/unauth.mako") + def index(self): + return dict(simple=True) + +class InvirtWeb(View): def __init__(self): - self.start_time = time.time() - self.checkpoints = [] - - def checkpoint(self, s): - self.checkpoints.append((s, time.time())) - - def __str__(self): - return ('Timing info:\n%s\n' % - '\n'.join(['%s: %s' % (d, t - self.start_time) for - (d, t) in self.checkpoints])) - -checkpoint = Checkpoint() - -def jquote(string): - return "'" + string.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n') + "'" - -def helppopup(subj): - """Return HTML code for a (?) link to a specified help topic""" - return ('(?)') - -def makeErrorPre(old, addition): - if addition is None: - return - if old: - return old[:-6] + '\n----\n' + str(addition) + '' - else: - return '

STDERR:

' + str(addition) + '
' - -Template.database = database -Template.config = config -Template.helppopup = staticmethod(helppopup) -Template.err = None - -class JsonDict: - """Class to store a dictionary that will be converted to JSON""" - def __init__(self, **kws): - self.data = kws - if 'err' in kws: - err = kws['err'] - del kws['err'] - self.addError(err) - - def __str__(self): - return simplejson.dumps(self.data) - - def addError(self, text): - """Add stderr text to be displayed on the website.""" - self.data['err'] = \ - makeErrorPre(self.data.get('err'), text) + super(self.__class__,self).__init__() + connect() + self._cp_config['tools.require_login.on'] = True + self._cp_config['tools.catch_stderr.on'] = True + self._cp_config['tools.mako.imports'] = ['from invirt.config import structs as config', + 'from invirt import database'] + self._cp_config['request.error_response'] = self.handle_error + + static = InvirtStatic + + @cherrypy.expose + @cherrypy.tools.mako(filename="/invalid.mako") + def invalidInput(self): + """Print an error page when an InvalidInput exception occurs""" + err = cherrypy.request.prev.params["err"] + emsg = cherrypy.request.prev.params["emsg"] + d = dict(err_field=err.err_field, + err_value=str(err.err_value), stderr=emsg, + errorMessage=str(err)) + return d + + @cherrypy.expose + @cherrypy.tools.mako(filename="/error.mako") + def error(self): + """Print an error page when an exception occurs""" + op = cherrypy.request.prev.path_info + username = cherrypy.request.login + err = cherrypy.request.prev.params["err"] + emsg = cherrypy.request.prev.params["emsg"] + traceback = cherrypy.request.prev.params["traceback"] + d = dict(op=op, user=username, fields=cherrypy.request.prev.params, + errorMessage=str(err), stderr=emsg, traceback=traceback) + error_raw = cherrypy.request.lookup.get_template("/error_raw.mako") + details = error_raw.render(**d) + exclude = config.web.errormail_exclude + if username not in exclude and '*' not in exclude: + send_error_mail('xvm error on %s for %s: %s' % (op, cherrypy.request.login, err), + details) + d['details'] = details + return d + + def __getattr__(self, name): + # At the point __getattr__ is called, tools haven't been run. Make sure the user is logged in. + cherrypy.tools.remote_user_login.callable() + + if name in ("admin", "overlord"): + if not cherrypy.request.login in getAfsGroupMembers(config.adminacl, config.authz.afs.cells[0].cell): + raise InvalidInput('username', cherrypy.request.login, + 'Not in admin group %s.' % config.adminacl) + cherrypy.request.state = State(cherrypy.request.login, isadmin=True) + return self + else: + return super(InvirtWeb, self).__getattr__(name) + + def handle_error(self): + err = sys.exc_info()[1] + if isinstance(err, InvalidInput): + cherrypy.request.params['err'] = err + cherrypy.request.params['emsg'] = revertStandardError() + raise cherrypy.InternalRedirect('/invalidInput') + if not cherrypy.request.prev or 'err' not in cherrypy.request.prev.params: + cherrypy.request.params['err'] = err + cherrypy.request.params['emsg'] = revertStandardError() + cherrypy.request.params['traceback'] = _cperror.format_exc() + raise cherrypy.InternalRedirect('/error') + # fall back to cherrypy default error page + cherrypy.HTTPError(500).set_response() + + @cherrypy.expose + @cherrypy.tools.mako(filename="/list.mako") + def list(self, result=None): + """Handler for list requests.""" + d = getListDict(cherrypy.request.login, cherrypy.request.state) + if result is not None: + d['result'] = result + return d + index=list + + @cherrypy.expose + @cherrypy.tools.mako(filename="/help.mako") + def help(self, subject=None, simple=False): + """Handler for help messages.""" + + help_mapping = { + 'Autoinstalls': """ +The autoinstaller builds a minimal Debian or Ubuntu system to run as a +ParaVM. You can access the resulting system by logging into the serial console server +with your Kerberos tickets; there is no root password so sshd will +refuse login.

+ +

Under the covers, the autoinstaller uses our own patched version of +xen-create-image, which is a tool based on debootstrap. If you log +into the serial console while the install is running, you can watch +it. +""", + 'ParaVM Console': """ +ParaVM machines do not support local console access over VNC. To +access the serial console of these machines, you can SSH with Kerberos +to %s, using the name of the machine as your +username.""" % config.console.hostname, + 'HVM/ParaVM': """ +HVM machines use the virtualization features of the processor, while +ParaVM machines rely on a modified kernel to communicate directly with +the hypervisor. HVMs support boot CDs of any operating system, and +the VNC console applet. The three-minute autoinstaller produces +ParaVMs. ParaVMs typically are more efficient, and always support the +console server.

+ +

More details are on the +wiki, including steps to prepare an HVM guest to boot as a ParaVM +(which you can skip by using the autoinstaller to begin with.)

+ +

We recommend using a ParaVM when possible and an HVM when necessary. +""", + 'CPU Weight': """ +Don't ask us! We're as mystified as you are.""", + 'Owner': """ +The owner field is used to determine quotas. It must be the name of a +locker that you are an AFS administrator of. In particular, you or an +AFS group you are a member of must have AFS rlidwka bits on the +locker. You can check who administers the LOCKER locker using the +commands 'attach LOCKER; fs la /mit/LOCKER' on Athena.) See also administrator.""", + 'Administrator': """ +The administrator field determines who can access the console and +power on and off the machine. This can be either a user or a moira +group.""", + 'Quotas': """ +Quotas are determined on a per-locker basis. Each locker may have a +maximum of 512 mebibytes of active ram, 50 gibibytes of disk, and 4 +active machines.""", + 'Console': """ +Framebuffer: At a Linux boot prompt in your VM, try +setting fb=false to disable the framebuffer. If you don't, +your machine will run just fine, but the applet's display of the +console will suffer artifacts. +""", + 'Windows': """ +Windows Vista: The Vista image is licensed for all MIT students and will automatically activate off the network; see the licensing confirmation e-mail for details. The installer requires 512 MiB RAM and at least 7.5 GiB disk space (15 GiB or more recommended).
+Windows XP: This is the volume license CD image. You will need your own volume license key to complete the install. We do not have these available for the general MIT community; ask your department if they have one, or visit http://msca.mit.edu/ if you are staff/faculty to request one. +""" + } + + if not subject: + subject = sorted(help_mapping.keys()) + if not isinstance(subject, list): + subject = [subject] + + return dict(simple=simple, + subjects=subject, + mapping=help_mapping) + help._cp_config['tools.require_login.on'] = False + + def parseCreate(self, fields): + kws = dict([(kw, fields[kw]) for kw in + 'name description owner memory disksize vmtype cdrom autoinstall'.split() + if fields[kw]]) + validate = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + strict=True, **kws) + return dict(contact=cherrypy.request.login, name=validate.name, + description=validate.description, memory=validate.memory, + disksize=validate.disksize, owner=validate.owner, + machine_type=getattr(validate, 'vmtype', Defaults.type), + cdrom=getattr(validate, 'cdrom', None), + autoinstall=getattr(validate, 'autoinstall', None)) + + @cherrypy.expose + @cherrypy.tools.mako(filename="/list.mako") + @cherrypy.tools.require_POST() + def create(self, **fields): + """Handler for create requests.""" + try: + parsed_fields = self.parseCreate(fields) + machine = controls.createVm(cherrypy.request.login, + cherrypy.request.state, **parsed_fields) + except InvalidInput, err: + pass + else: + err = None + cherrypy.request.state.clear() #Changed global state + d = getListDict(cherrypy.request.login, cherrypy.request.state) + d['err'] = err + if err: + for field, value in fields.items(): + setattr(d['defaults'], field, value) + else: + d['new_machine'] = parsed_fields['name'] + return d + + @cherrypy.expose + @cherrypy.tools.mako(filename="/helloworld.mako") + def helloworld(self, **kwargs): + return {'request': cherrypy.request, 'kwargs': kwargs} + helloworld._cp_config['tools.require_login.on'] = False + + @cherrypy.expose + def errortest(self): + """Throw an error, to test the error-tracing mechanisms.""" + print >>sys.stderr, "look ma, it's a stderr" + raise RuntimeError("test of the emergency broadcast system") + + class MachineView(View): + def __getattr__(self, name): + """Synthesize attributes to allow RESTful URLs like + /machine/13/info. This is hairy. CherryPy 3.2 adds a + method called _cp_dispatch that allows you to explicitly + handle URLs that can't be mapped, and it allows you to + rewrite the path components and continue processing. + + This function gets the next path component being resolved + as a string. _cp_dispatch will get an array of strings + representing any subsequent path components as well.""" + + try: + cherrypy.request.params['machine_id'] = int(name) + return self + except ValueError: + return None + + @cherrypy.expose + @cherrypy.tools.mako(filename="/info.mako") + def info(self, machine_id): + """Handler for info on a single VM.""" + machine = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + machine_id=machine_id).machine + d = infoDict(cherrypy.request.login, cherrypy.request.state, machine) + return d + index = info + + @cherrypy.expose + @cherrypy.tools.mako(filename="/info.mako") + @cherrypy.tools.require_POST() + def modify(self, machine_id, **fields): + """Handler for modifying attributes of a machine.""" + try: + modify_dict = modifyDict(cherrypy.request.login, + cherrypy.request.state, + machine_id, fields) + except InvalidInput, err: + result = None + machine = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + machine_id=machine_id).machine + else: + machine = modify_dict['machine'] + result = 'Success!' + err = None + info_dict = infoDict(cherrypy.request.login, + cherrypy.request.state, machine) + info_dict['err'] = err + if err: + for field, value in fields.items(): + setattr(info_dict['defaults'], field, value) + info_dict['result'] = result + return info_dict + + @cherrypy.expose + @cherrypy.tools.mako(filename="/vnc.mako") + def vnc(self, machine_id): + """VNC applet page. + + Note that due to same-domain restrictions, the applet connects to + the webserver, which needs to forward those requests to the xen + server. The Xen server runs another proxy that (1) authenticates + and (2) finds the correct port for the VM. + + You might want iptables like: + + -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \ + --dport 10003 -j DNAT --to-destination 18.181.0.60:10003 + -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \ + --dport 10003 -j SNAT --to-source 18.187.7.142 + -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \ + --dport 10003 -j ACCEPT + + Remember to enable iptables! + echo 1 > /proc/sys/net/ipv4/ip_forward + """ + machine = validation.Validate(cherrypy.request.login, + cherrypy.request.state, + machine_id=machine_id).machine + token = controls.vnctoken(machine) + host = controls.listHost(machine) + if host: + port = 10003 + [h.hostname for h in config.hosts].index(host) + else: + port = 5900 # dummy + + status = controls.statusInfo(machine) + has_vnc = hasVnc(status) + + d = dict(on=status, + has_vnc=has_vnc, + machine=machine, + hostname=cherrypy.request.local.name, + port=port, + authtoken=token) + return d + + @cherrypy.expose + @cherrypy.tools.mako(filename="/command.mako") + @cherrypy.tools.require_POST() + def command(self, command_name, machine_id, **kwargs): + """Handler for running commands like boot and delete on a VM.""" + back = kwargs.get('back') + if command_name == 'delete': + back = 'list' + try: + d = controls.commandResult(cherrypy.request.login, + cherrypy.request.state, + command_name, machine_id, kwargs) + except InvalidInput, err: + if not back: + raise + print >> sys.stderr, err + result = str(err) + else: + result = 'Success!' + if not back: + return d + if back == 'list': + cherrypy.request.state.clear() #Changed global state + raise cherrypy.InternalRedirect('/list?result=%s' + % urllib.quote(result)) + elif back == 'info': + raise cherrypy.HTTPRedirect(cherrypy.request.base + + '/machine/%d/' % machine_id, + status=303) + else: + raise InvalidInput('back', back, 'Not a known back page.') + + machine = MachineView() + class Defaults: """Class to store default values for fields.""" @@ -115,27 +402,17 @@ class Defaults: autoinstall = '' name = '' description = '' + administrator = '' type = 'linux-hvm' def __init__(self, max_memory=None, max_disk=None, **kws): if max_memory is not None: self.memory = min(self.memory, max_memory) if max_disk is not None: - self.max_disk = min(self.disk, max_disk) + self.disk = min(self.disk, max_disk) for key in kws: setattr(self, key, kws[key]) - - -DEFAULT_HEADERS = {'Content-Type': 'text/html'} - -def invalidInput(op, username, fields, err, emsg): - """Print an error page when an InvalidInput exception occurs""" - d = dict(op=op, user=username, err_field=err.err_field, - err_value=str(err.err_value), stderr=emsg, - errorMessage=str(err)) - return templates.invalid(searchList=[d]) - def hasVnc(status): """Does the machine with a given status list support VNC?""" if status is None: @@ -146,64 +423,32 @@ def hasVnc(status): return 'location' in d return False -def parseCreate(username, state, fields): - kws = dict([(kw, fields.getfirst(kw)) for kw in 'name description owner memory disksize vmtype cdrom autoinstall'.split()]) - validate = validation.Validate(username, state, strict=True, **kws) - return dict(contact=username, name=validate.name, description=validate.description, memory=validate.memory, - disksize=validate.disksize, owner=validate.owner, machine_type=validate.vmtype, - cdrom=getattr(validate, 'cdrom', None), - autoinstall=getattr(validate, 'autoinstall', None)) - -def create(username, state, path, fields): - """Handler for create requests.""" - try: - parsed_fields = parseCreate(username, state, fields) - machine = controls.createVm(username, state, **parsed_fields) - except InvalidInput, err: - pass - else: - err = None - state.clear() #Changed global state - d = getListDict(username, state) - d['err'] = err - if err: - for field in fields.keys(): - setattr(d['defaults'], field, fields.getfirst(field)) - else: - d['new_machine'] = parsed_fields['name'] - return templates.list(searchList=[d]) - def getListDict(username, state): """Gets the list of local variables used by list.tmpl.""" - checkpoint.checkpoint('Starting') machines = state.machines - checkpoint.checkpoint('Got my machines') on = {} has_vnc = {} + installing = {} xmlist = state.xmlist - checkpoint.checkpoint('Got uptimes') - can_clone = 'ice3' not in state.xmlist_raw for m in machines: if m not in xmlist: has_vnc[m] = 'Off' m.uptime = None else: m.uptime = xmlist[m]['uptime'] + installing[m] = bool(xmlist[m].get('autoinstall')) if xmlist[m]['console']: has_vnc[m] = True elif m.type.hvm: has_vnc[m] = "WTF?" else: - has_vnc[m] = "ParaVM"+helppopup("ParaVM Console") + has_vnc[m] = "ParaVM" max_memory = validation.maxMemory(username, state) max_disk = validation.maxDisk(username) - checkpoint.checkpoint('Got max mem/disk') defaults = Defaults(max_memory=max_memory, max_disk=max_disk, - owner=username, - cdrom='gutsy-i386') - checkpoint.checkpoint('Got defaults') + owner=username) def sortkey(machine): return (machine.owner != username, machine.owner, machine.name) machines = sorted(machines, key=sortkey) @@ -214,69 +459,25 @@ def getListDict(username, state): defaults=defaults, machines=machines, has_vnc=has_vnc, - can_clone=can_clone) + installing=installing, + disable_creation=False) return d -def listVms(username, state, path, fields): - """Handler for list requests.""" - checkpoint.checkpoint('Getting list dict') - d = getListDict(username, state) - checkpoint.checkpoint('Got list dict') - return templates.list(searchList=[d]) - -def vnc(username, state, path, fields): - """VNC applet page. - - Note that due to same-domain restrictions, the applet connects to - the webserver, which needs to forward those requests to the xen - server. The Xen server runs another proxy that (1) authenticates - and (2) finds the correct port for the VM. - - You might want iptables like: - - -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \ - --dport 10003 -j DNAT --to-destination 18.181.0.60:10003 - -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \ - --dport 10003 -j SNAT --to-source 18.187.7.142 - -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \ - --dport 10003 -j ACCEPT - - Remember to enable iptables! - echo 1 > /proc/sys/net/ipv4/ip_forward - """ - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - - token = controls.vnctoken(machine) - host = controls.listHost(machine) - if host: - port = 10003 + [h.hostname for h in config.hosts].index(host) - else: - port = 5900 # dummy - - status = controls.statusInfo(machine) - has_vnc = hasVnc(status) - - d = dict(user=username, - on=status, - has_vnc=has_vnc, - machine=machine, - hostname=state.environ.get('SERVER_NAME', 'localhost'), - port=port, - authtoken=token) - return templates.vnc(searchList=[d]) - def getHostname(nic): """Find the hostname associated with a NIC. XXX this should be merged with the similar logic in DNS and DHCP. """ - if nic.hostname and '.' in nic.hostname: - return nic.hostname + if nic.hostname: + hostname = nic.hostname elif nic.machine: - return nic.machine.name + '.' + config.dns.domains[0] + hostname = nic.machine.name else: return None - + if '.' in hostname: + return hostname + else: + return hostname + '.' + config.dns.domains[0] def getNicInfo(data_dict, machine): """Helper function for info, get data on nics for a machine. @@ -292,8 +493,7 @@ def getNicInfo(data_dict, machine): nic_fields = [] for i in range(len(machine.nics)): nic_fields.extend([(x % i, y % i) for x, y in nic_fields_template]) - if not i: - data_dict['nic%s_hostname' % i] = getHostname(machine.nics[i]) + data_dict['nic%s_hostname' % i] = getHostname(machine.nics[i]) data_dict['nic%s_mac' % i] = machine.nics[i].mac_addr data_dict['nic%s_ip' % i] = machine.nics[i].ip if len(machine.nics) == 1: @@ -316,44 +516,18 @@ def getDiskInfo(data_dict, machine): data_dict['%s_size' % name] = "%0.1f GiB" % (disk.size / 1024.) return disk_fields -def command(username, state, path, fields): - """Handler for running commands like boot and delete on a VM.""" - back = fields.getfirst('back') - try: - d = controls.commandResult(username, state, fields) - if d['command'] == 'Delete VM': - back = 'list' - except InvalidInput, err: - if not back: - raise - print >> sys.stderr, err - result = err - else: - result = 'Success!' - if not back: - return templates.command(searchList=[d]) - if back == 'list': - state.clear() #Changed global state - d = getListDict(username, state) - d['result'] = result - return templates.list(searchList=[d]) - elif back == 'info': - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - return ({'Status': '303 See Other', - 'Location': 'info?machine_id=%d' % machine.machine_id}, - "You shouldn't see this message.") - else: - raise InvalidInput('back', back, 'Not a known back page.') - -def modifyDict(username, state, fields): +def modifyDict(username, state, machine_id, fields): """Modify a machine as specified by CGI arguments. - Return a list of local variables for modify.tmpl. + Return a dict containing the machine that was modified. """ olddisk = {} session.begin() try: - kws = dict([(kw, fields.getfirst(kw)) for kw in 'machine_id owner admin contact name description memory vmtype disksize'.split()]) + kws = dict((kw, fields[kw]) for kw in + 'owner admin contact name description memory vmtype disksize'.split() + if fields.get(kw)) + kws['machine_id'] = machine_id validate = validation.Validate(username, state, **kws) machine = validate.machine oldname = machine.name @@ -364,20 +538,10 @@ def modifyDict(username, state, fields): if hasattr(validate, 'vmtype'): machine.type = validate.vmtype - if hasattr(validate, 'disksize'): - disksize = validate.disksize - disk = machine.disks[0] - if disk.size != disksize: - olddisk[disk.guest_device_name] = disksize - disk.size = disksize - session.save_or_update(disk) - update_acl = False if hasattr(validate, 'owner') and validate.owner != machine.owner: machine.owner = validate.owner update_acl = True - if hasattr(validate, 'name'): - machine.name = validate.name if hasattr(validate, 'description'): machine.description = validate.description if hasattr(validate, 'admin') and validate.admin != machine.administrator: @@ -387,127 +551,51 @@ def modifyDict(username, state, fields): machine.contact = validate.contact session.save_or_update(machine) - if update_acl: - cache_acls.refreshMachine(machine) session.commit() except: session.rollback() raise - for diskname in olddisk: - controls.resizeDisk(oldname, diskname, str(olddisk[diskname])) - if hasattr(validate, 'name'): - controls.renameMachine(machine, oldname, validate.name) - return dict(user=username, - command="modify", - machine=machine) - -def modify(username, state, path, fields): - """Handler for modifying attributes of a machine.""" - try: - modify_dict = modifyDict(username, state, fields) - except InvalidInput, err: - result = None - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - else: - machine = modify_dict['machine'] - result = 'Success!' - err = None - info_dict = infoDict(username, state, machine) - info_dict['err'] = err - if err: - for field in fields.keys(): - setattr(info_dict['defaults'], field, fields.getfirst(field)) - info_dict['result'] = result - return templates.info(searchList=[info_dict]) - - -def helpHandler(username, state, path, fields): - """Handler for help messages.""" - simple = fields.getfirst('simple') - subjects = fields.getlist('subject') - - help_mapping = { - 'Autoinstalls': """ -The autoinstaller builds a minimal Debian or Ubuntu system to run as a -ParaVM. You can access the resulting system by logging into the serial console server -with your Kerberos tickets; there is no root password so sshd will -refuse login.

- -

Under the covers, the autoinstaller uses our own patched version of -xen-create-image, which is a tool based on debootstrap. If you log -into the serial console while the install is running, you can watch -it. -""", - 'ParaVM Console': """ -ParaVM machines do not support local console access over VNC. To -access the serial console of these machines, you can SSH with Kerberos -to %s, using the name of the machine as your -username.""" % config.console.hostname, - 'HVM/ParaVM': """ -HVM machines use the virtualization features of the processor, while -ParaVM machines rely on a modified kernel to communicate directly with -the hypervisor. HVMs support boot CDs of any operating system, and -the VNC console applet. The three-minute autoinstaller produces -ParaVMs. ParaVMs typically are more efficient, and always support the -console server.

- -

More details are on the -wiki, including steps to prepare an HVM guest to boot as a ParaVM -(which you can skip by using the autoinstaller to begin with.)

-

We recommend using a ParaVM when possible and an HVM when necessary. -""", - 'CPU Weight': """ -Don't ask us! We're as mystified as you are.""", - 'Owner': """ -The owner field is used to determine quotas. It must be the name of a -locker that you are an AFS administrator of. In particular, you or an -AFS group you are a member of must have AFS rlidwka bits on the -locker. You can check who administers the LOCKER locker using the -commands 'attach LOCKER; fs la /mit/LOCKER' on Athena.) See also administrator.""", - 'Administrator': """ -The administrator field determines who can access the console and -power on and off the machine. This can be either a user or a moira -group.""", - 'Quotas': """ -Quotas are determined on a per-locker basis. Each locker may have a -maximum of 512 megabytes of active ram, 50 gigabytes of disk, and 4 -active machines.""", - 'Console': """ -Framebuffer: At a Linux boot prompt in your VM, try -setting fb=false to disable the framebuffer. If you don't, -your machine will run just fine, but the applet's display of the -console will suffer artifacts. -""", - 'Windows': """ -Windows Vista: The Vista image is licensed for all MIT students and will automatically activate off the network; see the licensing confirmation e-mail for details. The installer req uires 512 MB RAM and at least 7.5 GB disk space (15 GB or more recommended).
-Windows XP: This is the volume license CD image. You will need your own volume license key to complete the install. We do not have these available for the general MIT community; ask your department if they have one. -""" - } - - if not subjects: - subjects = sorted(help_mapping.keys()) - - d = dict(user=username, - simple=simple, - subjects=subjects, - mapping=help_mapping) + session.begin() + try: + if hasattr(validate, 'disksize'): + disksize = validate.disksize + disk = machine.disks[0] + if disk.size != disksize: + olddisk[disk.guest_device_name] = disksize + disk.size = disksize + session.save_or_update(disk) + for diskname in olddisk: + controls.resizeDisk(oldname, diskname, str(olddisk[diskname])) + session.save_or_update(machine) + session.commit() + except: + session.rollback() + raise - return templates.help(searchList=[d]) + session.begin() + try: + if hasattr(validate, 'name'): + machine.name = validate.name + for n in machine.nics: + if n.hostname == oldname: + n.hostname = validate.name + if hasattr(validate, 'name'): + controls.renameMachine(machine, oldname, validate.name) + session.save_or_update(machine) + session.commit() + except: + session.rollback() + raise + if update_acl: + cache_acls.refreshMachine(machine) -def badOperation(u, s, p, e): - """Function called when accessing an unknown URI.""" - return ({'Status': '404 Not Found'}, 'Invalid operation.') + return dict(machine=machine) def infoDict(username, state, machine): """Get the variables used by info.tmpl.""" status = controls.statusInfo(machine) - checkpoint.checkpoint('Getting status info') has_vnc = hasVnc(status) if status is None: main_status = dict(name=machine.name, @@ -521,9 +609,6 @@ def infoDict(username, state, machine): uptime = datetime.timedelta(seconds=int(time.time()-start_time)) cpu_time_float = float(main_status.get('cpu_time', 0)) cputime = datetime.timedelta(seconds=int(cpu_time_float)) - checkpoint.checkpoint('Status') - display_fields = """name uptime memory state cpu_weight on_reboot - on_poweroff on_crash on_xend_start on_xend_stop bootloader""".split() display_fields = [('name', 'Name'), ('description', 'Description'), ('owner', 'Owner'), @@ -537,13 +622,6 @@ def infoDict(username, state, machine): ('memory', 'RAM'), 'DISK_INFO', ('state', 'state (xen format)'), - ('cpu_weight', 'CPU weight'+helppopup('CPU Weight')), - ('on_reboot', 'Action on VM reboot'), - ('on_poweroff', 'Action on VM poweroff'), - ('on_crash', 'Action on VM crash'), - ('on_xend_start', 'Action on Xen start'), - ('on_xend_stop', 'Action on Xen stop'), - ('bootloader', 'Bootloader options'), ] fields = [] machine_info = {} @@ -576,18 +654,14 @@ def infoDict(username, state, machine): pass #fields.append((disp, None)) - checkpoint.checkpoint('Got fields') - - max_mem = validation.maxMemory(machine.owner, state, machine, False) - checkpoint.checkpoint('Got mem') max_disk = validation.maxDisk(machine.owner, machine) defaults = Defaults() for name in 'machine_id name description administrator owner memory contact'.split(): - setattr(defaults, name, getattr(machine, name)) + if getattr(machine, name): + setattr(defaults, name, getattr(machine, name)) defaults.type = machine.type.type_id defaults.disk = "%0.2f" % (machine.disks[0].size/1024.) - checkpoint.checkpoint('Got defaults') d = dict(user=username, on=status is not None, machine=machine, @@ -597,55 +671,9 @@ def infoDict(username, state, machine): ram=machine.memory, max_mem=max_mem, max_disk=max_disk, - owner_help=helppopup("Owner"), fields = fields) return d -def info(username, state, path, fields): - """Handler for info on a single VM.""" - machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine - d = infoDict(username, state, machine) - checkpoint.checkpoint('Got infodict') - return templates.info(searchList=[d]) - -def unauthFront(_, _2, _3, fields): - """Information for unauth'd users.""" - return templates.unauth(searchList=[{'simple' : True}]) - -def admin(username, state, path, fields): - if path == '': - return ({'Status': '303 See Other', - 'Location': 'admin/'}, - "You shouldn't see this message.") - if not username in getAfsGroupMembers(config.web.adminacl, 'athena.mit.edu'): - raise InvalidInput('username', username, - 'Not in admin group %s.' % config.web.adminacl) - newstate = State(username, isadmin=True) - newstate.environ = state.environ - return handler(username, newstate, path, fields) - -def throwError(_, __, ___, ____): - """Throw an error, to test the error-tracing mechanisms.""" - raise RuntimeError("test of the emergency broadcast system") - -mapping = dict(list=listVms, - vnc=vnc, - command=command, - modify=modify, - info=info, - create=create, - help=helpHandler, - unauth=unauthFront, - admin=admin, - overlord=admin, - errortest=throwError) - -def printHeaders(headers): - """Print a dictionary as HTTP headers.""" - for key, value in headers.iteritems(): - print '%s: %s' % (key, value) - print - def send_error_mail(subject, body): import subprocess @@ -662,113 +690,4 @@ Subject: %s p.stdin.close() p.wait() -def show_error(op, username, fields, err, emsg, traceback): - """Print an error page when an exception occurs""" - d = dict(op=op, user=username, fields=fields, - errorMessage=str(err), stderr=emsg, traceback=traceback) - details = templates.error_raw(searchList=[d]) - exclude = config.web.errormail_exclude - if username not in exclude and '*' not in exclude: - send_error_mail('xvm error on %s for %s: %s' % (op, username, err), - details) - d['details'] = details - return templates.error(searchList=[d]) - -def getUser(environ): - """Return the current user based on the SSL environment variables""" - user = environ.get('REMOTE_USER') - if user is None: - return - - if environ.get('AUTH_TYPE') == 'Negotiate': - # Convert the krb5 principal into a krb4 username - if not user.endswith('@%s' % config.authn[0].realm): - return - else: - return user.split('@')[0].replace('/', '.') - else: - return user - -def handler(username, state, path, fields): - operation, path = pathSplit(path) - if not operation: - operation = 'list' - print 'Starting', operation - fun = mapping.get(operation, badOperation) - return fun(username, state, path, fields) - -class App: - def __init__(self, environ, start_response): - self.environ = environ - self.start = start_response - - self.username = getUser(environ) - self.state = State(self.username) - self.state.environ = environ - - random.seed() #sigh - - def __iter__(self): - start_time = time.time() - database.clear_cache() - sys.stderr = StringIO() - fields = cgi.FieldStorage(fp=self.environ['wsgi.input'], environ=self.environ) - operation = self.environ.get('PATH_INFO', '') - if not operation: - self.start("301 Moved Permanently", [('Location', './')]) - return - if self.username is None: - operation = 'unauth' - - try: - checkpoint.checkpoint('Before') - output = handler(self.username, self.state, operation, fields) - checkpoint.checkpoint('After') - - headers = dict(DEFAULT_HEADERS) - if isinstance(output, tuple): - new_headers, output = output - headers.update(new_headers) - e = revertStandardError() - if e: - if hasattr(output, 'addError'): - output.addError(e) - else: - # This only happens on redirects, so it'd be a pain to get - # the message to the user. Maybe in the response is useful. - output = output + '\n\nstderr:\n' + e - output_string = str(output) - checkpoint.checkpoint('output as a string') - except Exception, err: - if not fields.has_key('js'): - if isinstance(err, InvalidInput): - self.start('200 OK', [('Content-Type', 'text/html')]) - e = revertStandardError() - yield str(invalidInput(operation, self.username, fields, - err, e)) - return - import traceback - self.start('500 Internal Server Error', - [('Content-Type', 'text/html')]) - e = revertStandardError() - s = show_error(operation, self.username, fields, - err, e, traceback.format_exc()) - yield str(s) - return - status = headers.setdefault('Status', '200 OK') - del headers['Status'] - self.start(status, headers.items()) - yield output_string - if fields.has_key('timedebug'): - yield '

%s
' % cgi.escape(str(checkpoint)) - -def constructor(): - connect() - return App - -def main(): - from flup.server.fcgi_fork import WSGIServer - WSGIServer(constructor()).run() - -if __name__ == '__main__': - main() +random.seed() #sigh