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)
81 details['ONBOOT']='yes'
82 details['USERCTL']='no'
84 details['HWADDR'] = interface['mac']
85 if interface['is_primary']:
86 details['PRIMARY']='yes'
88 if interface['method'] == "static":
89 details['BOOTPROTO'] = "static"
90 details['IPADDR'] = interface['ip']
91 details['NETMASK'] = interface['netmask']
92 if interface['is_primary']:
93 gateway = interface['gateway']
95 details['DNS1'] = interface['dns1']
97 details['DNS2'] = interface['dns2']
99 elif interface['method'] == "dhcp":
100 details['BOOTPROTO'] = "dhcp"
101 details['PERSISTENT_DHCLIENT'] = "yes"
102 if interface['hostname']:
103 details['DHCP_HOSTNAME'] = interface['hostname']
105 details['DHCP_HOSTNAME'] = hostname
106 if not interface['is_primary']:
107 details['DHCLIENTARGS'] = "-R subnet-mask"
110 plc.GetInterfaceTags()
112 except AttributeError:
116 interface_tag_ids = "interface_tag_ids"
117 interface_tag_id = "interface_tag_id"
119 interface_tag_ids = "nodenetwork_setting_ids"
120 interface_tag_id = "nodenetwork_setting_id"
122 if len(interface[interface_tag_ids]) > 0:
125 settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
127 settings = plc.GetNodeNetworkSettings({interface_tag_id:interface[interface_tag_ids]})
129 logger.log("net:InitInterfaces FATAL: failed call GetInterfaceTags({'interface_tag_id':{%s})"% \
130 interface['interface_tag_ids'])
131 failedToGetSettings = True
132 continue # on to the next interface
134 for setting in settings:
135 # to explicitly set interface name
140 settingname = setting[name_key].upper()
141 if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
142 details[settingname]=setting['value']
144 elif settingname in \
145 [ "MODE", "ESSID", "NW", "FREQ", "CHANNEL", "SENS", "RATE",
146 "KEY", "KEY1", "KEY2", "KEY3", "KEY4", "SECURITYMODE",
147 "IWCONFIG", "IWPRIV" ] :
148 details [settingname] = setting['value']
149 details ['TYPE']='Wireless'
151 logger.log("net:InitInterfaces WARNING: ignored setting named %s"%setting[name_key])
153 # support aliases to interfaces either by name or HWADDR
154 if 'ALIAS' in details:
155 if 'HWADDR' in details:
156 hwaddr = details['HWADDR'].lower()
157 del details['HWADDR']
159 hwifname = macs[hwaddr]
160 if ('IFNAME' in details) and details['IFNAME'] <> hwifname:
161 logger.log("net:InitInterfaces WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
162 (details['IFNAME'],hwifname))
163 details['IFNAME'] = hwifname
165 logger.log('net:InitInterfaces WARNING: mac addr %s for alias not found' %(hwaddr))
167 if 'IFNAME' in details:
168 # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
169 # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
170 # our aliases compliant.
171 parts = details['ALIAS'].split('_')
174 isValid=isValid and part.isalnum()
177 devices_map["%s:%s" % (details['IFNAME'],details['ALIAS'])] = details
179 logger.log("net:InitInterfaces WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% details['ALIAS'])
181 logger.log("net:InitInterfaces WARNING: interface alias (%s) not matched to an interface"% details['ALIAS'])
184 if ('IFNAME' not in details) and not orig_ifname:
185 ifname="eth%d" % (device_id-1)
186 # should check if $ifname is an eth already defines
187 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
188 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
190 if ('IFNAME' not in details) and orig_ifname:
193 ifname = details['IFNAME']
195 devices_map[ifname] = details
197 m = modprobe.Modprobe()
199 m.input("%s/etc/modprobe.conf" % root)
202 for (dev, details) in devices_map.iteritems():
203 # get the driver string "moduleName option1=a option2=b"
204 driver=details.get('DRIVER','')
206 driver=driver.split()
207 kernelmodule=driver[0]
208 m.aliasset(dev,kernelmodule)
209 options=" ".join(driver[1:])
211 m.optionsset(dev,options)
212 m.output("%s/etc/modprobe.conf" % root, program)
214 # clean up after any ifcfg-$dev script that's no longer listed as
215 # part of the Interfaces associated with this node
217 # list all network-scripts
218 files = os.listdir(sysconfig)
220 # filter out the ifcfg-* files
223 if f.find("ifcfg-") == 0:
226 # remove loopback (lo) from ifcfgs list
228 if lo in ifcfgs: ifcfgs.remove(lo)
230 # remove known devices from icfgs list
231 for (dev, details) in devices_map.iteritems():
233 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
235 # delete the remaining ifcfgs from
236 deletedSomething = False
238 if not failedToGetSettings:
240 dev = ifcfg[len('ifcfg-'):]
241 path = "%s/ifcfg-%s" % (sysconfig,dev)
243 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
244 os.system("/sbin/ifdown %s" % dev)
245 deletedSomething=True
248 # wait a bit for the one or more ifdowns to have taken effect
252 # Write network configuration file
253 networkconf = file("%s/etc/sysconfig/network" % root, "w")
254 networkconf.write("NETWORKING=yes\nHOSTNAME=%s\n" % hostname)
255 if gateway is not None:
256 networkconf.write("GATEWAY=%s\n" % gateway)
259 # Process ifcfg-$dev changes / additions
261 for (dev, details) in devices_map.iteritems():
262 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
263 f = os.fdopen(fd, "w")
264 f.write("# Autogenerated by pyplnet... do not edit!\n")
265 if 'DRIVER' in details:
266 f.write("# using %s driver for device %s\n" % (details['DRIVER'],dev))
267 f.write('DEVICE=%s\n' % dev)
269 # print the configuration values
270 for (key, val) in details.iteritems():
271 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
272 f.write('%s=%s\n' % (key, val))
274 # print the configuration specific option values (if any)
275 if 'CFGOPTIONS' in details:
276 cfgoptions = details['CFGOPTIONS']
277 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
278 for cfgoption in cfgoptions.split():
279 key,val = cfgoption.split('=')
283 f.write('%s="%s"\n' % (key,val))
286 # compare whether two files are the same
287 def comparefiles(a,b):
289 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
290 if not os.path.exists(a): return False
295 if not os.path.exists(b): return False
300 return buf_a == buf_b
304 path = "%s/ifcfg-%s" % (sysconfig,dev)
305 if not os.path.exists(path):
306 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
307 # add ifcfg-$dev configuration file
308 os.rename(tmpnam,path)
312 elif not comparefiles(tmpnam,path):
313 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
315 logger.verbose('net:InitInterfaces ifdown %s' % dev)
316 # invoke ifdown for the old configuration
317 os.system("/sbin/ifdown %s" % dev)
318 # wait a few secs for ifdown to complete
321 logger.log('replacing configuration for %s' % dev)
322 # replace ifcfg-$dev configuration file
323 os.rename(tmpnam,path)
327 # tmpnam & path are identical
332 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
333 for line in fb.readlines():
335 if parts[0][0]=="#":continue
336 if parts[0].find('='):
337 name,value = parts[0].split('=')
338 # clean up name & value
340 value = value.strip()
341 value = value.strip("'")
342 value = value.strip('"')
343 cfgvariables[name]=value
347 if name in cfgvariables:
348 value=cfgvariables[name]
349 value = value.lower()
353 # skip over device configs with ONBOOT=no
354 if getvar("ONBOOT") == 'no': continue
356 # don't bring up slave devices, the network scripts will
357 # handle those correctly
358 if getvar("SLAVE") == 'yes': continue
361 logger.verbose('net:InitInterfaces bringing up %s' % dev)
362 os.system("/sbin/ifup %s" % dev)
364 if __name__ == "__main__":
368 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
369 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
370 parser.add_option("-r", "--root", action="store", type="string",
371 dest="root", default=None)
372 parser.add_option("-f", "--files-only", action="store_true",
374 parser.add_option("-p", "--program", action="store", type="string",
375 dest="program", default="plnet")
376 (options, args) = parser.parse_args()
377 if len(args) != 1 or options.root is None:
378 print >>sys.stderr, "Missing root or node_id"
382 node = shell.GetNodes({'node_id': [int(args[0])]})
384 interfaces = shell.GetInterfaces({'interface_id': node[0]['interface_ids']})
385 except AttributeError:
386 interfaces = shell.GetNodeNetworks({'nodenetwork_id':node[0]['nodenetwork_ids']})
390 data = {'hostname': node[0]['hostname'], 'interfaces': interfaces}
392 def __init__(self, verbose):
393 self.verbosity = verbose
394 def log(self, msg, loglevel=2):
397 def verbose(self, msg):
399 l = logger(options.verbose)
400 InitInterfaces(l, shell, data, options.root, options.files_only)