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
33 # assume data['networks'] contains this node's NodeNetworks
36 hostname = data.get('hostname',socket.gethostname())
38 networks = data['networks']
39 failedToGetSettings = False
41 # NOTE: GetInterfaces/NodeNetworks does not necessarily order the interfaces
42 # returned. Because 'interface'is decremented as each interface is processed,
43 # by the time is_primary=True (primary) interface is reached, the device
44 # "eth%s" % interface, is not eth0. But, something like eth-4, or eth-12.
45 # This code sorts the interfaces, placing is_primary=True interfaces first.
46 # There is a lot of room for improvement to how this
47 # script handles interfaces and how it chooses the primary interface.
48 def compare_by (fieldname):
49 def compare_two_dicts (a, b):
50 return cmp(a[fieldname], b[fieldname])
51 return compare_two_dicts
53 # NOTE: by sorting on 'is_primary' and then reversing (since False is sorted
54 # before True) all 'is_primary' interfaces are at the beginning of the list.
55 networks.sort( compare_by('is_primary') )
58 for network in networks:
59 logger.verbose('net:InitInterfaces interface %d: %s'%(interface,network))
60 logger.verbose('net:InitInterfaces macs = %s' % macs)
61 logger.verbose('net:InitInterfaces ips = %s' % ips)
62 # Get interface name preferably from MAC address, falling back
65 if hwaddr <> None: hwaddr=hwaddr.lower()
67 orig_ifname = macs[hwaddr]
68 elif network['ip'] in ips:
69 orig_ifname = ips[network['ip']]
74 logger.verbose('net:InitInterfaces orig_ifname = %s' % orig_ifname)
80 inter['HWADDR'] = network['mac']
81 if network['is_primary']:
82 inter['PRIMARY']='yes'
84 if network['method'] == "static":
85 inter['BOOTPROTO'] = "static"
86 inter['IPADDR'] = network['ip']
87 inter['NETMASK'] = network['netmask']
88 if network['is_primary']:
89 gateway = network['gateway']
91 inter['DNS1'] = network['dns1']
93 inter['DNS2'] = network['dns2']
95 elif network['method'] == "dhcp":
96 inter['BOOTPROTO'] = "dhcp"
97 inter['PERSISTENT_DHCLIENT'] = "yes"
98 if network['hostname']:
99 inter['DHCP_HOSTNAME'] = network['hostname']
101 inter['DHCP_HOSTNAME'] = hostname
102 if not network['is_primary']:
103 inter['DHCLIENTARGS'] = "-R subnet-mask"
106 plc.GetInterfaceTags()
108 except AttributeError:
112 interface_tag_ids = "interface_tag_ids"
113 interface_tag_id = "interface_tag_id"
115 interface_tag_ids = "nodenetwork_setting_ids"
116 interface_tag_id = "nodenetwork_setting_id"
118 if len(network[interface_tag_ids]) > 0:
121 settings = plc.GetInterfaceTags({interface_tag_id:network[interface_tag_ids]})
123 settings = plc.GetNodeNetworkSettings({interface_tag_id:network[interface_tag_ids]})
125 logger.log("net:InitInterfaces FATAL: failed call GetInterfaceTags({'interface_tag_id':{%s})"% \
126 network['interface_tag_ids'])
127 failedToGetSettings = True
128 continue # on to the next network
130 for setting in settings:
131 # to explicitly set interface name
136 settingname = setting[name_key].upper()
137 if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
138 inter[settingname]=setting['value']
140 elif settingname in \
141 [ "MODE", "ESSID", "NW", "FREQ", "CHANNEL", "SENS", "RATE",
142 "KEY", "KEY1", "KEY2", "KEY3", "KEY4", "SECURITYMODE",
143 "IWCONFIG", "IWPRIV" ] :
144 inter [settingname] = setting['value']
145 inter ['TYPE']='Wireless'
147 logger.log("net:InitInterfaces WARNING: ignored setting named %s"%setting[name_key])
149 # support aliases to interfaces either by name or HWADDR
151 if 'HWADDR' in inter:
152 hwaddr = inter['HWADDR'].lower()
155 hwifname = macs[hwaddr]
156 if ('IFNAME' in inter) and inter['IFNAME'] <> hwifname:
157 logger.log("net:InitInterfaces WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
158 (inter['IFNAME'],hwifname))
159 inter['IFNAME'] = hwifname
161 logger.log('net:InitInterfaces WARNING: mac addr %s for alias not found' %(hwaddr))
163 if 'IFNAME' in inter:
164 # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
165 # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
166 # our aliases compliant.
167 parts = inter['ALIAS'].split('_')
170 isValid=isValid and part.isalnum()
173 interfaces["%s:%s" % (inter['IFNAME'],inter['ALIAS'])] = inter
175 logger.log("net:InitInterfaces WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% inter['ALIAS'])
177 logger.log("net:InitInterfaces WARNING: interface alias (%s) not matched to an interface"% inter['ALIAS'])
180 if ('IFNAME' not in inter) and not orig_ifname:
181 ifname="eth%d" % (interface-1)
182 # should check if $ifname is an eth already defines
183 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
184 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
186 if ('IFNAME' not in inter) and orig_ifname:
189 ifname = inter['IFNAME']
191 interfaces[ifname] = inter
193 m = modprobe.Modprobe()
195 m.input("%s/etc/modprobe.conf" % root)
198 for (dev, inter) in interfaces.iteritems():
199 # get the driver string "moduleName option1=a option2=b"
200 driver=inter.get('DRIVER','')
202 driver=driver.split()
203 kernelmodule=driver[0]
204 m.aliasset(dev,kernelmodule)
205 options=" ".join(driver[1:])
207 m.optionsset(dev,options)
208 m.output("%s/etc/modprobe.conf" % root, program)
210 # clean up after any ifcfg-$dev script that's no longer listed as
211 # part of the NodeNetworks associated with this node
213 # list all network-scripts
214 files = os.listdir(sysconfig)
216 # filter out the ifcfg-* files
219 if f.find("ifcfg-") == 0:
222 # remove loopback (lo) from ifcfgs list
224 if lo in ifcfgs: ifcfgs.remove(lo)
226 # remove known devices from icfgs list
227 for (dev, inter) in interfaces.iteritems():
229 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
231 # delete the remaining ifcfgs from
232 deletedSomething = False
234 if not failedToGetSettings:
236 dev = ifcfg[len('ifcfg-'):]
237 path = "%s/ifcfg-%s" % (sysconfig,dev)
239 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
240 os.system("/sbin/ifdown %s" % dev)
241 deletedSomething=True
244 # wait a bit for the one or more ifdowns to have taken effect
248 # Write network configuration file
249 networkconf = file("%s/etc/sysconfig/network" % root, "w")
250 networkconf.write("NETWORKING=yes\nHOSTNAME=%s\n" % hostname)
251 if gateway is not None:
252 networkconf.write("GATEWAY=%s\n" % gateway)
255 # Process ifcfg-$dev changes / additions
257 for (dev, inter) in interfaces.iteritems():
258 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
259 f = os.fdopen(fd, "w")
260 f.write("# Autogenerated by pyplnet... do not edit!\n")
261 if 'DRIVER' in inter:
262 f.write("# using %s driver for device %s\n" % (inter['DRIVER'],dev))
263 f.write('DEVICE=%s\n' % dev)
265 # print the configuration values
266 for (key, val) in inter.iteritems():
267 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
268 f.write('%s=%s\n' % (key, val))
270 # print the configuration specific option values (if any)
271 if 'CFGOPTIONS' in inter:
272 cfgoptions = inter['CFGOPTIONS']
273 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
274 for cfgoption in cfgoptions.split():
275 key,val = cfgoption.split('=')
279 f.write('%s="%s"\n' % (key,val))
282 # compare whether two files are the same
283 def comparefiles(a,b):
285 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
286 if not os.path.exists(a): return False
291 if not os.path.exists(b): return False
296 return buf_a == buf_b
300 path = "%s/ifcfg-%s" % (sysconfig,dev)
301 if not os.path.exists(path):
302 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
303 # add ifcfg-$dev configuration file
304 os.rename(tmpnam,path)
308 elif not comparefiles(tmpnam,path):
309 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
311 logger.verbose('net:InitInterfaces ifdown %s' % dev)
312 # invoke ifdown for the old configuration
313 os.system("/sbin/ifdown %s" % dev)
314 # wait a few secs for ifdown to complete
317 logger.log('replacing configuration for %s' % dev)
318 # replace ifcfg-$dev configuration file
319 os.rename(tmpnam,path)
323 # tmpnam & path are identical
328 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
329 for line in fb.readlines():
331 if parts[0][0]=="#":continue
332 if parts[0].find('='):
333 name,value = parts[0].split('=')
334 # clean up name & value
336 value = value.strip()
337 value = value.strip("'")
338 value = value.strip('"')
339 cfgvariables[name]=value
343 if name in cfgvariables:
344 value=cfgvariables[name]
345 value = value.lower()
349 # skip over device configs with ONBOOT=no
350 if getvar("ONBOOT") == 'no': continue
352 # don't bring up slave devices, the network scripts will
353 # handle those correctly
354 if getvar("SLAVE") == 'yes': continue
357 logger.verbose('net:InitInterfaces bringing up %s' % dev)
358 os.system("/sbin/ifup %s" % dev)
360 if __name__ == "__main__":
364 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
365 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
366 parser.add_option("-r", "--root", action="store", type="string",
367 dest="root", default=None)
368 parser.add_option("-f", "--files-only", action="store_true",
370 parser.add_option("-p", "--program", action="store", type="string",
371 dest="program", default="plnet")
372 (options, args) = parser.parse_args()
373 if len(args) != 1 or options.root is None:
374 print >>sys.stderr, "Missing root or node_id"
378 node = shell.GetNodes({'node_id': [int(args[0])]})
380 networks = shell.GetInterfaces({'interface_id': node[0]['interface_ids']})
381 except AttributeError:
382 networks = shell.GetNodeNetworks({'nodenetwork_id':node[0]['nodenetwork_ids']})
386 data = {'hostname': node[0]['hostname'], 'networks': networks}
388 def __init__(self, verbose):
389 self.verbosity = verbose
390 def log(self, msg, loglevel=2):
393 def verbose(self, msg):
395 l = logger(options.verbose)
396 InitInterfaces(l, shell, data, options.root, options.files_only)