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, hostname)
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 logger.log('net:InitInterfaces: Bridge detected. Adding %s to devices_map' % ifname)
161 devices_map[ifname] = removeBridgedIfaceDetails(details)
162 bridgeName = details['BRIDGE']
164 logger.log('net:InitInterfaces: Adding bridge %s' % bridgeName)
165 bridgeDetails = prepDetails(interface)
166 bridgeDetails['TYPE'] = 'Bridge'
167 devices_map[bridgeName] = bridgeDetails
169 if 'IFNAME' in details:
170 ifname = details['IFNAME']
177 ifname="eth%d" % (device_id-1)
178 if ifname not in devices_map:
181 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
182 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
183 devices_map[ifname] = details
185 logger.log('net:InitInterfaces: Device map: %r' % devices_map)
186 m = modprobe.Modprobe()
188 m.input("%s/etc/modprobe.conf" % root)
191 for (dev, details) in devices_map.iteritems():
192 # get the driver string "moduleName option1=a option2=b"
193 driver=details.get('DRIVER','')
195 driver=driver.split()
196 kernelmodule=driver[0]
197 m.aliasset(dev,kernelmodule)
198 options=" ".join(driver[1:])
200 m.optionsset(dev,options)
201 m.output("%s/etc/modprobe.conf" % root, program)
203 # clean up after any ifcfg-$dev script that's no longer listed as
204 # part of the Interfaces associated with this node
206 # list all network-scripts
207 files = os.listdir(sysconfig)
209 # filter out the ifcfg-* files
212 if f.find("ifcfg-") == 0:
215 # remove loopback (lo) from ifcfgs list
217 if lo in ifcfgs: ifcfgs.remove(lo)
219 # remove known devices from ifcfgs list
220 for (dev, details) in devices_map.iteritems():
222 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
224 # delete the remaining ifcfgs from
225 deletedSomething = False
227 if not failedToGetSettings:
229 dev = ifcfg[len('ifcfg-'):]
230 path = "%s/ifcfg-%s" % (sysconfig,dev)
232 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
233 os.system("/sbin/ifdown %s" % dev)
234 deletedSomething=True
237 # wait a bit for the one or more ifdowns to have taken effect
241 # Write network configuration file
242 networkconf = file("%s/etc/sysconfig/network" % root, "w")
243 networkconf.write("NETWORKING=yes\nHOSTNAME=%s\n" % hostname)
244 if gateway is not None:
245 networkconf.write("GATEWAY=%s\n" % gateway)
248 # Process ifcfg-$dev changes / additions
251 for (dev, details) in devices_map.iteritems():
252 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
253 f = os.fdopen(fd, "w")
254 f.write("# Autogenerated by pyplnet... do not edit!\n")
255 if 'DRIVER' in details:
256 f.write("# using %s driver for device %s\n" % (details['DRIVER'],dev))
257 f.write('DEVICE=%s\n' % dev)
259 # print the configuration values
260 for (key, val) in details.iteritems():
261 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER','GATEWAY'):
262 f.write('%s="%s"\n' % (key, val))
264 # print the configuration specific option values (if any)
265 if 'CFGOPTIONS' in details:
266 cfgoptions = details['CFGOPTIONS']
267 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
268 for cfgoption in cfgoptions.split():
269 key,val = cfgoption.split('=')
273 f.write('%s="%s"\n' % (key,val))
276 # compare whether two files are the same
277 def comparefiles(a,b):
279 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
280 if not os.path.exists(a): return False
285 if not os.path.exists(b): return False
290 return buf_a == buf_b
294 src_route_changed = False
295 if ('PRIMARY' not in details and 'GATEWAY' in details and
296 details['GATEWAY'] != ''):
298 (fd, rule_tmpnam) = tempfile.mkstemp(dir=sysconfig)
299 os.write(fd, "from %s lookup %d\n" % (details['IPADDR'], table))
301 rule_dest = "%s/rule-%s" % (sysconfig, dev)
302 if not comparefiles(rule_tmpnam, rule_dest):
303 os.rename(rule_tmpnam, rule_dest)
304 os.chmod(rule_dest, 0644)
305 src_route_changed = True
307 os.unlink(rule_tmpnam)
308 (fd, route_tmpnam) = tempfile.mkstemp(dir=sysconfig)
309 netmask = struct.unpack("I", socket.inet_aton(details['NETMASK']))[0]
310 ip = struct.unpack("I", socket.inet_aton(details['IPADDR']))[0]
311 network = socket.inet_ntoa(struct.pack("I", (ip & netmask)))
312 netmask = socket.ntohl(netmask)
314 while (netmask & (1 << i)) == 0:
317 os.write(fd, "%s/%d dev %s table %d\n" % (network, prefix, dev, table))
318 os.write(fd, "default via %s dev %s table %d\n" % (details['GATEWAY'], dev, table))
320 route_dest = "%s/route-%s" % (sysconfig, dev)
321 if not comparefiles(route_tmpnam, route_dest):
322 os.rename(route_tmpnam, route_dest)
323 os.chmod(route_dest, 0644)
324 src_route_changed = True
326 os.unlink(route_tmpnam)
328 path = "%s/ifcfg-%s" % (sysconfig,dev)
329 if not os.path.exists(path):
330 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
331 # add ifcfg-$dev configuration file
332 os.rename(tmpnam,path)
336 elif not comparefiles(tmpnam,path) or src_route_changed:
337 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
339 logger.verbose('net:InitInterfaces ifdown %s' % dev)
340 # invoke ifdown for the old configuration
341 os.system("/sbin/ifdown %s" % dev)
342 # wait a few secs for ifdown to complete
345 logger.log('replacing configuration for %s' % dev)
346 # replace ifcfg-$dev configuration file
347 os.rename(tmpnam,path)
351 # tmpnam & path are identical
356 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
357 for line in fb.readlines():
359 if parts[0][0]=="#":continue
360 if parts[0].find('='):
361 name,value = parts[0].split('=')
362 # clean up name & value
364 value = value.strip()
365 value = value.strip("'")
366 value = value.strip('"')
367 cfgvariables[name]=value
371 if name in cfgvariables:
372 value=cfgvariables[name]
373 value = value.lower()
377 # skip over device configs with ONBOOT=no
378 if getvar("ONBOOT") == 'no': continue
380 # don't bring up slave devices, the network scripts will
381 # handle those correctly
382 if getvar("SLAVE") == 'yes': continue
385 logger.verbose('net:InitInterfaces bringing up %s' % dev)
386 os.system("/sbin/ifup %s" % dev)
389 # Prepare the interface details.
391 def prepDetails(interface, hostname=''):
393 details['ONBOOT'] = 'yes'
394 details['USERCTL'] = 'no'
396 details['HWADDR'] = interface['mac']
397 if interface['is_primary']:
398 details['PRIMARY'] = 'yes'
400 if interface['method'] == "static":
401 details['BOOTPROTO'] = "static"
402 details['IPADDR'] = interface['ip']
403 details['NETMASK'] = interface['netmask']
404 details['GATEWAY'] = interface['gateway']
405 if interface['is_primary']:
406 gateway = interface['gateway']
407 if interface['dns1']:
408 details['DNS1'] = interface['dns1']
409 if interface['dns2']:
410 details['DNS2'] = interface['dns2']
412 elif interface['method'] == "dhcp":
413 details['BOOTPROTO'] = "dhcp"
414 details['PERSISTENT_DHCLIENT'] = "yes"
415 if interface['hostname']:
416 details['DHCP_HOSTNAME'] = interface['hostname']
418 details['DHCP_HOSTNAME'] = hostname
419 if not interface['is_primary']:
420 details['DHCLIENTARGS'] = "-R subnet-mask"
425 # Remove duplicate entry from the bridged interface's configuration file.
427 def removeBridgedIfaceDetails(details):
428 for key in [ 'PRIMARY', 'PERSISTENT_DHCLIENT', 'DHCLIENTARGS', 'DHCP_HOSTNAME',
429 'BOOTPROTO', 'IPADDR', 'NETMASK', 'GATEWAY', 'DNS1', 'DNS2' ]:
434 if __name__ == "__main__":
438 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
439 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
440 parser.add_option("-r", "--root", action="store", type="string",
441 dest="root", default=None)
442 parser.add_option("-f", "--files-only", action="store_true",
444 parser.add_option("-p", "--program", action="store", type="string",
445 dest="program", default="plnet")
446 (options, args) = parser.parse_args()
448 options.verbose = True
449 if len(args) != 1 or options.root is None:
451 print >>sys.stderr, "Missing root or node_id"
455 node = shell.GetNodes({'node_id': [int(args[0])]})
457 interfaces = shell.GetInterfaces({'interface_id': node[0]['interface_ids']})
458 except AttributeError:
459 interfaces = shell.GetNodeNetworks({'nodenetwork_id':node[0]['nodenetwork_ids']})
463 data = {'hostname': node[0]['hostname'], 'interfaces': interfaces}
465 def __init__(self, verbose):
466 self.verbosity = verbose
467 def log(self, msg, loglevel=2):
470 def verbose(self, msg):
472 l = logger(options.verbose)
473 InitInterfaces(l, shell, data, options.root, options.files_only)