1 #!/usr/bin/python /usr/bin/plcsh
16 def InitInterfaces(logger, plc, data, root="", files_only=False, program="NodeManager"):
19 sysconfig = "%s/etc/sysconfig/network-scripts" % root
21 os.makedirs(sysconfig)
23 if e.errno != errno.EEXIST:
26 # query running network interfaces
28 ips = dict(zip(devs.values(), devs.keys()))
31 macs[sioc.gifhwaddr(dev).lower()] = dev
35 hostname = data.get('hostname',socket.gethostname())
37 # assume data['interfaces'] contains this node's Interfaces
38 # can cope with 4.3 ('networks') or 5.0 ('interfaces')
40 interfaces = data['interfaces']
42 interfaces = data['networks']
43 failedToGetSettings = False
45 # NOTE: GetInterfaces/NodeNetworks does not necessarily order the interfaces
46 # returned. Because 'interface' is decremented as each interface is processed,
47 # by the time is_primary=True (primary) interface is reached, the device
48 # "eth%s" % interface, is not eth0. But, something like eth-4, or eth-12.
49 # This code sorts the interfaces, placing is_primary=True interfaces first.
50 # There is a lot of room for improvement to how this
51 # script handles interfaces and how it chooses the primary interface.
52 def compare_by (fieldname):
53 def compare_two_dicts (a, b):
54 return cmp(a[fieldname], b[fieldname])
55 return compare_two_dicts
57 # NOTE: by sorting on 'is_primary' and then reversing (since False is sorted
58 # before True) all 'is_primary' interfaces are at the beginning of the list.
59 interfaces.sort( compare_by('is_primary') )
62 for interface in interfaces:
63 logger.verbose('net:InitInterfaces interface %d: %r'%(device_id,interface))
64 logger.verbose('net:InitInterfaces macs = %r' % macs)
65 logger.verbose('net:InitInterfaces ips = %r' % ips)
66 # Get interface name preferably from MAC address, falling back
68 hwaddr=interface['mac']
69 if hwaddr <> None: hwaddr=hwaddr.lower()
71 orig_ifname = macs[hwaddr]
72 elif interface['ip'] in ips:
73 orig_ifname = ips[interface['ip']]
78 logger.verbose('net:InitInterfaces orig_ifname = %s' % orig_ifname)
80 details = prepDetails(interface)
82 if 'interface_tag_ids' in interface:
84 interface_tag_ids = "interface_tag_ids"
85 interface_tag_id = "interface_tag_id"
89 interface_tag_ids = "nodenetwork_setting_ids"
90 interface_tag_id = "nodenetwork_setting_id"
93 if len(interface[interface_tag_ids]) > 0:
96 settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
98 settings = plc.GetNodeNetworkSettings({interface_tag_id:interface[interface_tag_ids]})
100 logger.log("net:InitInterfaces FATAL: failed call GetInterfaceTags({'interface_tag_id':{%s})"% \
101 interface[interface_tag_ids])
102 failedToGetSettings = True
103 continue # on to the next interface
105 for setting in settings:
106 settingname = setting[name_key].upper()
107 if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
108 details[settingname]=setting['value']
110 elif settingname in \
111 [ "MODE", "ESSID", "NW", "FREQ", "CHANNEL", "SENS", "RATE",
112 "KEY", "KEY1", "KEY2", "KEY3", "KEY4", "SECURITYMODE",
113 "IWCONFIG", "IWPRIV" ] :
114 details [settingname] = setting['value']
115 details ['TYPE']='Wireless'
117 elif settingname in [ 'BRIDGE' ]:
118 details['BRIDGE'] = setting['value']
120 logger.log("net:InitInterfaces WARNING: ignored setting named %s"%setting[name_key])
122 # support aliases to interfaces either by name or HWADDR
123 if 'ALIAS' in details:
124 if 'HWADDR' in details:
125 hwaddr = details['HWADDR'].lower()
126 del details['HWADDR']
128 hwifname = macs[hwaddr]
129 if ('IFNAME' in details) and details['IFNAME'] <> hwifname:
130 logger.log("net:InitInterfaces WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
131 (details['IFNAME'],hwifname))
132 details['IFNAME'] = hwifname
134 logger.log('net:InitInterfaces WARNING: mac addr %s for alias not found' %(hwaddr))
136 if 'IFNAME' in details:
137 # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
138 # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
139 # our aliases compliant.
140 parts = details['ALIAS'].split('_')
143 isValid=isValid and part.isalnum()
146 devices_map["%s:%s" % (details['IFNAME'],details['ALIAS'])] = details
148 logger.log("net:InitInterfaces WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% details['ALIAS'])
150 logger.log("net:InitInterfaces WARNING: interface alias (%s) not matched to an interface"% details['ALIAS'])
152 elif 'BRIDGE' in details:
153 #The bridge inherits the mac of the first attached interface.
154 if 'IFNAME' in details:
155 ifname = details['IFNAME']
160 if 'PRIMARY' in details: del details['PRIMARY']
161 logger.log('net:InitInterfaces: Bridge detected. Adding %s to devices_map' % ifname)
162 devices_map[ifname] = details
163 bridgeName = details['BRIDGE']
165 logger.log('net:InitInterfaces: Adding bridge %s' % bridgeName)
166 bridgeDetails = prepDetails(interface)
167 bridgeDetails['TYPE'] = 'Bridge'
168 devices_map[bridgeName] = bridgeDetails
170 if 'IFNAME' in details:
171 ifname = details['IFNAME']
178 ifname="eth%d" % (device_id-1)
179 if ifname not in devices_map:
182 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
183 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
184 devices_map[ifname] = details
186 logger.log('net:InitInterfaces: Device map: %r' % devices_map)
187 m = modprobe.Modprobe()
189 m.input("%s/etc/modprobe.conf" % root)
192 for (dev, details) in devices_map.iteritems():
193 # get the driver string "moduleName option1=a option2=b"
194 driver=details.get('DRIVER','')
196 driver=driver.split()
197 kernelmodule=driver[0]
198 m.aliasset(dev,kernelmodule)
199 options=" ".join(driver[1:])
201 m.optionsset(dev,options)
202 m.output("%s/etc/modprobe.conf" % root, program)
204 # clean up after any ifcfg-$dev script that's no longer listed as
205 # part of the Interfaces associated with this node
207 # list all network-scripts
208 files = os.listdir(sysconfig)
210 # filter out the ifcfg-* files
213 if f.find("ifcfg-") == 0:
216 # remove loopback (lo) from ifcfgs list
218 if lo in ifcfgs: ifcfgs.remove(lo)
220 # remove known devices from ifcfgs list
221 for (dev, details) in devices_map.iteritems():
223 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
225 # delete the remaining ifcfgs from
226 deletedSomething = False
228 if not failedToGetSettings:
230 dev = ifcfg[len('ifcfg-'):]
231 path = "%s/ifcfg-%s" % (sysconfig,dev)
233 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
234 os.system("/sbin/ifdown %s" % dev)
235 deletedSomething=True
238 # wait a bit for the one or more ifdowns to have taken effect
242 # Write network configuration file
243 networkconf = file("%s/etc/sysconfig/network" % root, "w")
244 networkconf.write("NETWORKING=yes\nHOSTNAME=%s\n" % hostname)
245 if gateway is not None:
246 networkconf.write("GATEWAY=%s\n" % gateway)
249 # Process ifcfg-$dev changes / additions
252 for (dev, details) in devices_map.iteritems():
253 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
254 f = os.fdopen(fd, "w")
255 f.write("# Autogenerated by pyplnet... do not edit!\n")
256 if 'DRIVER' in details:
257 f.write("# using %s driver for device %s\n" % (details['DRIVER'],dev))
258 f.write('DEVICE=%s\n' % dev)
260 # print the configuration values
261 for (key, val) in details.iteritems():
262 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER','GATEWAY'):
263 f.write('%s="%s"\n' % (key, val))
265 # print the configuration specific option values (if any)
266 if 'CFGOPTIONS' in details:
267 cfgoptions = details['CFGOPTIONS']
268 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
269 for cfgoption in cfgoptions.split():
270 key,val = cfgoption.split('=')
274 f.write('%s="%s"\n' % (key,val))
277 # compare whether two files are the same
278 def comparefiles(a,b):
280 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
281 if not os.path.exists(a): return False
286 if not os.path.exists(b): return False
291 return buf_a == buf_b
295 src_route_changed = False
296 if ('PRIMARY' not in details and 'GATEWAY' in details and
297 details['GATEWAY'] != ''):
299 (fd, rule_tmpnam) = tempfile.mkstemp(dir=sysconfig)
300 os.write(fd, "from %s lookup %d\n" % (details['IPADDR'], table))
302 rule_dest = "%s/rule-%s" % (sysconfig, dev)
303 if not comparefiles(rule_tmpnam, rule_dest):
304 os.rename(rule_tmpnam, rule_dest)
305 os.chmod(rule_dest, 0644)
306 src_route_changed = True
308 os.unlink(rule_tmpnam)
309 (fd, route_tmpnam) = tempfile.mkstemp(dir=sysconfig)
310 netmask = struct.unpack("I", socket.inet_aton(details['NETMASK']))[0]
311 ip = struct.unpack("I", socket.inet_aton(details['IPADDR']))[0]
312 network = socket.inet_ntoa(struct.pack("I", (ip & netmask)))
313 netmask = socket.ntohl(netmask)
315 while (netmask & (1 << i)) == 0:
318 os.write(fd, "%s/%d dev %s table %d\n" % (network, prefix, dev, table))
319 os.write(fd, "default via %s dev %s table %d\n" % (details['GATEWAY'], dev, table))
321 route_dest = "%s/route-%s" % (sysconfig, dev)
322 if not comparefiles(route_tmpnam, route_dest):
323 os.rename(route_tmpnam, route_dest)
324 os.chmod(route_dest, 0644)
325 src_route_changed = True
327 os.unlink(route_tmpnam)
329 path = "%s/ifcfg-%s" % (sysconfig,dev)
330 if not os.path.exists(path):
331 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
332 # add ifcfg-$dev configuration file
333 os.rename(tmpnam,path)
337 elif not comparefiles(tmpnam,path) or src_route_changed:
338 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
340 logger.verbose('net:InitInterfaces ifdown %s' % dev)
341 # invoke ifdown for the old configuration
342 os.system("/sbin/ifdown %s" % dev)
343 # wait a few secs for ifdown to complete
346 logger.log('replacing configuration for %s' % dev)
347 # replace ifcfg-$dev configuration file
348 os.rename(tmpnam,path)
352 # tmpnam & path are identical
357 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
358 for line in fb.readlines():
360 if parts[0][0]=="#":continue
361 if parts[0].find('='):
362 name,value = parts[0].split('=')
363 # clean up name & value
365 value = value.strip()
366 value = value.strip("'")
367 value = value.strip('"')
368 cfgvariables[name]=value
372 if name in cfgvariables:
373 value=cfgvariables[name]
374 value = value.lower()
378 # skip over device configs with ONBOOT=no
379 if getvar("ONBOOT") == 'no': continue
381 # don't bring up slave devices, the network scripts will
382 # handle those correctly
383 if getvar("SLAVE") == 'yes': continue
386 logger.verbose('net:InitInterfaces bringing up %s' % dev)
387 os.system("/sbin/ifup %s" % dev)
390 # Prepare the interface details.
392 def prepDetails(interface):
394 details['ONBOOT'] = 'yes'
395 details['USERCTL'] = 'no'
397 details['HWADDR'] = interface['mac']
398 if interface['is_primary']:
399 details['PRIMARY'] = 'yes'
401 if interface['method'] == "static":
402 details['BOOTPROTO'] = "static"
403 details['IPADDR'] = interface['ip']
404 details['NETMASK'] = interface['netmask']
405 details['GATEWAY'] = interface['gateway']
406 if interface['is_primary']:
407 gateway = interface['gateway']
408 if interface['dns1']:
409 details['DNS1'] = interface['dns1']
410 if interface['dns2']:
411 details['DNS2'] = interface['dns2']
413 elif interface['method'] == "dhcp":
414 details['BOOTPROTO'] = "dhcp"
415 details['PERSISTENT_DHCLIENT'] = "yes"
416 if interface['hostname']:
417 details['DHCP_HOSTNAME'] = interface['hostname']
419 details['DHCP_HOSTNAME'] = hostname
420 if not interface['is_primary']:
421 details['DHCLIENTARGS'] = "-R subnet-mask"
425 if __name__ == "__main__":
429 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
430 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
431 parser.add_option("-r", "--root", action="store", type="string",
432 dest="root", default=None)
433 parser.add_option("-f", "--files-only", action="store_true",
435 parser.add_option("-p", "--program", action="store", type="string",
436 dest="program", default="plnet")
437 (options, args) = parser.parse_args()
439 options.verbose = True
440 if len(args) != 1 or options.root is None:
442 print >>sys.stderr, "Missing root or node_id"
446 node = shell.GetNodes({'node_id': [int(args[0])]})
448 interfaces = shell.GetInterfaces({'interface_id': node[0]['interface_ids']})
449 except AttributeError:
450 interfaces = shell.GetNodeNetworks({'nodenetwork_id':node[0]['nodenetwork_ids']})
454 data = {'hostname': node[0]['hostname'], 'interfaces': interfaces}
456 def __init__(self, verbose):
457 self.verbosity = verbose
458 def log(self, msg, loglevel=2):
461 def verbose(self, msg):
463 l = logger(options.verbose)
464 InitInterfaces(l, shell, data, options.root, options.files_only)