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 # The names of the bridge devices
65 for interface in interfaces:
66 logger.verbose('net:InitInterfaces interface %d: %r'%(device_id,interface))
67 logger.verbose('net:InitInterfaces macs = %r' % macs)
68 logger.verbose('net:InitInterfaces ips = %r' % ips)
69 # Get interface name preferably from MAC address, falling back
71 hwaddr=interface['mac']
72 if hwaddr <> None: hwaddr=hwaddr.lower()
74 orig_ifname = macs[hwaddr]
75 elif interface['ip'] in ips:
76 orig_ifname = ips[interface['ip']]
81 logger.verbose('net:InitInterfaces orig_ifname = %s' % orig_ifname)
83 details = prepDetails(interface, hostname)
85 if interface['is_primary']:
86 gateway = interface['gateway']
88 if 'interface_tag_ids' in interface:
90 interface_tag_ids = "interface_tag_ids"
91 interface_tag_id = "interface_tag_id"
95 interface_tag_ids = "nodenetwork_setting_ids"
96 interface_tag_id = "nodenetwork_setting_id"
99 if len(interface[interface_tag_ids]) > 0:
102 settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
104 settings = plc.GetNodeNetworkSettings({interface_tag_id:interface[interface_tag_ids]})
106 logger.log("net:InitInterfaces FATAL: failed call GetInterfaceTags({'interface_tag_id':{%s})"% \
107 interface[interface_tag_ids])
108 failedToGetSettings = True
109 continue # on to the next interface
111 for setting in settings:
112 settingname = setting[name_key].upper()
113 if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
114 details[settingname]=setting['value']
116 elif settingname in \
117 [ "MODE", "ESSID", "NW", "FREQ", "CHANNEL", "SENS", "RATE",
118 "KEY", "KEY1", "KEY2", "KEY3", "KEY4", "SECURITYMODE",
119 "IWCONFIG", "IWPRIV" ] :
120 details [settingname] = setting['value']
121 details ['TYPE']='Wireless'
123 elif settingname in [ 'BRIDGE' ]:
124 details['BRIDGE'] = setting['value']
126 logger.log("net:InitInterfaces WARNING: ignored setting named %s"%setting[name_key])
128 # support aliases to interfaces either by name or HWADDR
129 if 'ALIAS' in details:
130 if 'HWADDR' in details:
131 hwaddr = details['HWADDR'].lower()
132 del details['HWADDR']
134 hwifname = macs[hwaddr]
135 if ('IFNAME' in details) and details['IFNAME'] <> hwifname:
136 logger.log("net:InitInterfaces WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
137 (details['IFNAME'],hwifname))
138 details['IFNAME'] = hwifname
140 logger.log('net:InitInterfaces WARNING: mac addr %s for alias not found' %(hwaddr))
142 if 'IFNAME' in details:
143 # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
144 # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
145 # our aliases compliant.
146 parts = details['ALIAS'].split('_')
149 isValid=isValid and part.isalnum()
152 devices_map["%s:%s" % (details['IFNAME'],details['ALIAS'])] = details
154 logger.log("net:InitInterfaces WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% details['ALIAS'])
156 logger.log("net:InitInterfaces WARNING: interface alias (%s) not matched to an interface"% details['ALIAS'])
158 elif 'BRIDGE' in details and 'IFNAME' in details:
159 # The bridge inherits the mac of the first attached interface.
160 ifname = details['IFNAME']
162 logger.log('net:InitInterfaces: Bridge detected. Adding %s to devices_map' % ifname)
163 devices_map[ifname] = removeBridgedIfaceDetails(details)
164 bridgeName = details['BRIDGE']
166 logger.log('net:InitInterfaces: Adding bridge %s' % bridgeName)
167 bridgeDetails = prepDetails(interface)
168 bridgeDevices.append(bridgeName)
169 bridgeDetails['TYPE'] = 'Bridge'
170 devices_map[bridgeName] = bridgeDetails
172 if 'IFNAME' in details:
173 ifname = details['IFNAME']
180 ifname="eth%d" % (device_id-1)
181 if ifname not in devices_map:
184 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
185 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
186 devices_map[ifname] = details
188 logger.log('net:InitInterfaces: Device map: %r' % devices_map)
189 m = modprobe.Modprobe()
191 m.input("%s/etc/modprobe.conf" % root)
194 for (dev, details) in devices_map.iteritems():
195 # get the driver string "moduleName option1=a option2=b"
196 driver=details.get('DRIVER','')
198 driver=driver.split()
199 kernelmodule=driver[0]
200 m.aliasset(dev,kernelmodule)
201 options=" ".join(driver[1:])
203 m.optionsset(dev,options)
204 m.output("%s/etc/modprobe.conf" % root, program)
206 # clean up after any ifcfg-$dev script that's no longer listed as
207 # part of the Interfaces associated with this node
209 # list all network-scripts
210 files = os.listdir(sysconfig)
212 # filter out the ifcfg-* files
215 if f.find("ifcfg-") == 0:
218 # remove loopback (lo) from ifcfgs list
220 if lo in ifcfgs: ifcfgs.remove(lo)
222 # remove known devices from ifcfgs list
223 for (dev, details) in devices_map.iteritems():
225 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
227 # delete the remaining ifcfgs from
228 deletedSomething = False
230 if not failedToGetSettings:
232 dev = ifcfg[len('ifcfg-'):]
233 path = "%s/ifcfg-%s" % (sysconfig,dev)
235 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
236 os.system("/sbin/ifdown %s" % dev)
237 deletedSomething=True
240 # wait a bit for the one or more ifdowns to have taken effect
244 # Write network configuration file
245 networkconf = file("%s/etc/sysconfig/network" % root, "w")
246 networkconf.write("NETWORKING=yes\nHOSTNAME=%s\n" % hostname)
247 if gateway is not None:
248 networkconf.write("GATEWAY=%s\n" % gateway)
251 # Process ifcfg-$dev changes / additions
254 for (dev, details) in devices_map.iteritems():
255 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
256 f = os.fdopen(fd, "w")
257 f.write("# Autogenerated by pyplnet... do not edit!\n")
258 if 'DRIVER' in details:
259 f.write("# using %s driver for device %s\n" % (details['DRIVER'],dev))
260 f.write('DEVICE=%s\n' % dev)
262 # print the configuration values
263 for (key, val) in details.iteritems():
264 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER','GATEWAY'):
265 f.write('%s="%s"\n' % (key, val))
267 # print the configuration specific option values (if any)
268 if 'CFGOPTIONS' in details:
269 cfgoptions = details['CFGOPTIONS']
270 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
271 for cfgoption in cfgoptions.split():
272 key,val = cfgoption.split('=')
276 f.write('%s="%s"\n' % (key,val))
279 # compare whether two files are the same
280 def comparefiles(a,b):
282 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
283 if not os.path.exists(a): return False
288 if not os.path.exists(b): return False
293 return buf_a == buf_b
297 src_route_changed = False
298 if ('PRIMARY' not in details and 'GATEWAY' in details and
299 details['GATEWAY'] != ''):
301 (fd, rule_tmpnam) = tempfile.mkstemp(dir=sysconfig)
302 os.write(fd, "from %s lookup %d\n" % (details['IPADDR'], table))
304 rule_dest = "%s/rule-%s" % (sysconfig, dev)
305 if not comparefiles(rule_tmpnam, rule_dest):
306 os.rename(rule_tmpnam, rule_dest)
307 os.chmod(rule_dest, 0644)
308 src_route_changed = True
310 os.unlink(rule_tmpnam)
311 (fd, route_tmpnam) = tempfile.mkstemp(dir=sysconfig)
312 netmask = struct.unpack("I", socket.inet_aton(details['NETMASK']))[0]
313 ip = struct.unpack("I", socket.inet_aton(details['IPADDR']))[0]
314 network = socket.inet_ntoa(struct.pack("I", (ip & netmask)))
315 netmask = socket.ntohl(netmask)
317 while (netmask & (1 << i)) == 0:
320 os.write(fd, "%s/%d dev %s table %d\n" % (network, prefix, dev, table))
321 os.write(fd, "default via %s dev %s table %d\n" % (details['GATEWAY'], dev, table))
323 route_dest = "%s/route-%s" % (sysconfig, dev)
324 if not comparefiles(route_tmpnam, route_dest):
325 os.rename(route_tmpnam, route_dest)
326 os.chmod(route_dest, 0644)
327 src_route_changed = True
329 os.unlink(route_tmpnam)
331 path = "%s/ifcfg-%s" % (sysconfig,dev)
332 if not os.path.exists(path):
333 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
334 # add ifcfg-$dev configuration file
335 os.rename(tmpnam,path)
339 elif not comparefiles(tmpnam,path) or src_route_changed:
340 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
342 logger.verbose('net:InitInterfaces ifdown %s' % dev)
343 # invoke ifdown for the old configuration
344 os.system("/sbin/ifdown %s" % dev)
345 # wait a few secs for ifdown to complete
348 logger.log('replacing configuration for %s' % dev)
349 # replace ifcfg-$dev configuration file
350 os.rename(tmpnam,path)
354 # tmpnam & path are identical
359 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
360 for line in fb.readlines():
362 if parts[0][0]=="#":continue
363 if parts[0].find('='):
364 name,value = parts[0].split('=')
365 # clean up name & value
367 value = value.strip()
368 value = value.strip("'")
369 value = value.strip('"')
370 cfgvariables[name]=value
374 if name in cfgvariables:
375 value=cfgvariables[name]
376 value = value.lower()
380 # skip over device configs with ONBOOT=no
381 if getvar("ONBOOT") == 'no': continue
383 # don't bring up slave devices, the network scripts will
384 # handle those correctly
385 if getvar("SLAVE") == 'yes': continue
387 # Delay bringing up any bridge devices
388 if dev in bridgeDevices: continue
391 logger.verbose('net:InitInterfaces bringing up %s' % dev)
392 os.system("/sbin/ifup %s" % dev)
394 # Bring up the bridge devices
395 for bridge in bridgeDevices:
396 if not files_only and bridge in newdevs:
397 logger.verbose('net:InitInterfaces bringing up bridge %s' % bridge)
398 os.system("/sbin/ifup %s" % bridge)
401 # Prepare the interface details.
403 def prepDetails(interface, hostname=''):
405 details['ONBOOT'] = 'yes'
406 details['USERCTL'] = 'no'
408 details['HWADDR'] = interface['mac']
409 if interface['is_primary']:
410 details['PRIMARY'] = 'yes'
412 if interface['method'] == "static":
413 details['BOOTPROTO'] = "static"
414 details['IPADDR'] = interface['ip']
415 details['NETMASK'] = interface['netmask']
416 details['GATEWAY'] = interface['gateway']
417 if interface['is_primary']:
418 if interface['dns1']:
419 details['DNS1'] = interface['dns1']
420 if interface['dns2']:
421 details['DNS2'] = interface['dns2']
423 elif interface['method'] == "dhcp":
424 details['BOOTPROTO'] = "dhcp"
425 details['PERSISTENT_DHCLIENT'] = "yes"
426 if interface['hostname']:
427 details['DHCP_HOSTNAME'] = interface['hostname']
429 details['DHCP_HOSTNAME'] = hostname
430 if not interface['is_primary']:
431 details['DHCLIENTARGS'] = "-R subnet-mask"
436 # Remove duplicate entry from the bridged interface's configuration file.
438 def removeBridgedIfaceDetails(details):
439 for key in [ 'PRIMARY', 'PERSISTENT_DHCLIENT', 'DHCLIENTARGS', 'DHCP_HOSTNAME',
440 'BOOTPROTO', 'IPADDR', 'NETMASK', 'GATEWAY', 'DNS1', 'DNS2' ]:
445 if __name__ == "__main__":
449 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
450 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
451 parser.add_option("-r", "--root", action="store", type="string",
452 dest="root", default=None)
453 parser.add_option("-f", "--files-only", action="store_true",
455 parser.add_option("-p", "--program", action="store", type="string",
456 dest="program", default="plnet")
457 (options, args) = parser.parse_args()
458 if len(args) != 1 or options.root is None:
460 print >>sys.stderr, "Missing root or node_id"
464 node = shell.GetNodes({'node_id': [int(args[0])]})
466 interfaces = shell.GetInterfaces({'interface_id': node[0]['interface_ids']})
467 except AttributeError:
468 interfaces = shell.GetNodeNetworks({'nodenetwork_id':node[0]['nodenetwork_ids']})
472 data = {'hostname': node[0]['hostname'], 'interfaces': interfaces}
474 def __init__(self, verbose):
475 self.verbosity = verbose
476 def log(self, msg, loglevel=2):
479 def verbose(self, msg):
481 l = logger(options.verbose)
482 InitInterfaces(l, shell, data, options.root, options.files_only)