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 details['GATEWAY'] = interface['gateway']
93 if interface['is_primary']:
94 gateway = interface['gateway']
96 details['DNS1'] = interface['dns1']
98 details['DNS2'] = interface['dns2']
100 elif interface['method'] == "dhcp":
101 details['BOOTPROTO'] = "dhcp"
102 details['PERSISTENT_DHCLIENT'] = "yes"
103 if interface['hostname']:
104 details['DHCP_HOSTNAME'] = interface['hostname']
106 details['DHCP_HOSTNAME'] = hostname
107 if not interface['is_primary']:
108 details['DHCLIENTARGS'] = "-R subnet-mask"
110 if 'interface_tag_ids' in interface:
112 interface_tag_ids = "interface_tag_ids"
113 interface_tag_id = "interface_tag_id"
117 interface_tag_ids = "nodenetwork_setting_ids"
118 interface_tag_id = "nodenetwork_setting_id"
121 if len(interface[interface_tag_ids]) > 0:
124 settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
126 settings = plc.GetNodeNetworkSettings({interface_tag_id:interface[interface_tag_ids]})
128 logger.log("net:InitInterfaces FATAL: failed call GetInterfaceTags({'interface_tag_id':{%s})"% \
129 interface[interface_tag_ids])
130 failedToGetSettings = True
131 continue # on to the next interface
133 for setting in settings:
134 settingname = setting[name_key].upper()
135 if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
136 details[settingname]=setting['value']
138 elif settingname in \
139 [ "MODE", "ESSID", "NW", "FREQ", "CHANNEL", "SENS", "RATE",
140 "KEY", "KEY1", "KEY2", "KEY3", "KEY4", "SECURITYMODE",
141 "IWCONFIG", "IWPRIV" ] :
142 details [settingname] = setting['value']
143 details ['TYPE']='Wireless'
145 logger.log("net:InitInterfaces WARNING: ignored setting named %s"%setting[name_key])
147 # support aliases to interfaces either by name or HWADDR
148 if 'ALIAS' in details:
149 if 'HWADDR' in details:
150 hwaddr = details['HWADDR'].lower()
151 del details['HWADDR']
153 hwifname = macs[hwaddr]
154 if ('IFNAME' in details) and details['IFNAME'] <> hwifname:
155 logger.log("net:InitInterfaces WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
156 (details['IFNAME'],hwifname))
157 details['IFNAME'] = hwifname
159 logger.log('net:InitInterfaces WARNING: mac addr %s for alias not found' %(hwaddr))
161 if 'IFNAME' in details:
162 # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
163 # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
164 # our aliases compliant.
165 parts = details['ALIAS'].split('_')
168 isValid=isValid and part.isalnum()
171 devices_map["%s:%s" % (details['IFNAME'],details['ALIAS'])] = details
173 logger.log("net:InitInterfaces WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% details['ALIAS'])
175 logger.log("net:InitInterfaces WARNING: interface alias (%s) not matched to an interface"% details['ALIAS'])
178 if 'IFNAME' in details:
179 ifname = details['IFNAME']
186 ifname="eth%d" % (device_id-1)
187 if ifname not in devices_map:
190 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
191 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
192 devices_map[ifname] = details
194 m = modprobe.Modprobe()
196 m.input("%s/etc/modprobe.conf" % root)
199 for (dev, details) in devices_map.iteritems():
200 # get the driver string "moduleName option1=a option2=b"
201 driver=details.get('DRIVER','')
203 driver=driver.split()
204 kernelmodule=driver[0]
205 m.aliasset(dev,kernelmodule)
206 options=" ".join(driver[1:])
208 m.optionsset(dev,options)
209 m.output("%s/etc/modprobe.conf" % root, program)
211 # clean up after any ifcfg-$dev script that's no longer listed as
212 # part of the Interfaces associated with this node
214 # list all network-scripts
215 files = os.listdir(sysconfig)
217 # filter out the ifcfg-* files
220 if f.find("ifcfg-") == 0:
223 # remove loopback (lo) from ifcfgs list
225 if lo in ifcfgs: ifcfgs.remove(lo)
227 # remove known devices from icfgs list
228 for (dev, details) in devices_map.iteritems():
230 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
232 # delete the remaining ifcfgs from
233 deletedSomething = False
235 if not failedToGetSettings:
237 dev = ifcfg[len('ifcfg-'):]
238 path = "%s/ifcfg-%s" % (sysconfig,dev)
240 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
241 os.system("/sbin/ifdown %s" % dev)
242 deletedSomething=True
245 # wait a bit for the one or more ifdowns to have taken effect
249 # Write network configuration file
250 networkconf = file("%s/etc/sysconfig/network" % root, "w")
251 networkconf.write("NETWORKING=yes\nHOSTNAME=%s\n" % hostname)
252 if gateway is not None:
253 networkconf.write("GATEWAY=%s\n" % gateway)
256 # Process ifcfg-$dev changes / additions
258 for (dev, details) in devices_map.iteritems():
259 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
260 f = os.fdopen(fd, "w")
261 f.write("# Autogenerated by pyplnet... do not edit!\n")
262 if 'DRIVER' in details:
263 f.write("# using %s driver for device %s\n" % (details['DRIVER'],dev))
264 f.write('DEVICE=%s\n' % dev)
266 # print the configuration values
267 for (key, val) in details.iteritems():
268 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER','GATEWAY'):
269 f.write('%s="%s"\n' % (key, val))
271 # print the configuration specific option values (if any)
272 if 'CFGOPTIONS' in details:
273 cfgoptions = details['CFGOPTIONS']
274 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
275 for cfgoption in cfgoptions.split():
276 key,val = cfgoption.split('=')
280 f.write('%s="%s"\n' % (key,val))
283 # compare whether two files are the same
284 def comparefiles(a,b):
286 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
287 if not os.path.exists(a): return False
292 if not os.path.exists(b): return False
297 return buf_a == buf_b
301 src_route_changed = False
302 if ('PRIMARY' not in details and 'GATEWAY' in details and
303 details['GATEWAY'] != ''):
305 while dev[i - 1].isdigit():
307 table = 10 + int(dev[i:])
308 (fd, rule_tmpnam) = tempfile.mkstemp(dir=sysconfig)
309 os.write(fd, "from %s lookup %d\n" % (details['IPADDR'], table))
311 rule_dest = "%s/rule-%s" % (sysconfig, dev)
312 if not comparefiles(rule_tmpnam, rule_dest):
313 os.rename(rule_tmpnam, rule_dest)
314 os.chmod(rule_dest, 0644)
315 src_route_changed = True
317 os.unlink(rule_tmpnam)
318 (fd, route_tmpnam) = tempfile.mkstemp(dir=sysconfig)
319 netmask = struct.unpack("I", socket.inet_aton(details['NETMASK']))[0]
320 ip = struct.unpack("I", socket.inet_aton(details['IPADDR']))[0]
321 network = socket.inet_ntoa(struct.pack("I", (ip & netmask)))
322 netmask = socket.ntohl(netmask)
324 while (netmask & (1 << i)) == 0:
327 os.write(fd, "%s/%d dev %s table %d\n" % (network, prefix, dev, table))
328 os.write(fd, "default via %s dev %s table %d\n" % (details['GATEWAY'], dev, table))
330 route_dest = "%s/route-%s" % (sysconfig, dev)
331 if not comparefiles(route_tmpnam, route_dest):
332 os.rename(route_tmpnam, route_dest)
333 os.chmod(route_dest, 0644)
334 src_route_changed = True
336 os.unlink(route_tmpnam)
338 path = "%s/ifcfg-%s" % (sysconfig,dev)
339 if not os.path.exists(path):
340 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
341 # add ifcfg-$dev configuration file
342 os.rename(tmpnam,path)
346 elif not comparefiles(tmpnam,path) or src_route_changed:
347 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
349 logger.verbose('net:InitInterfaces ifdown %s' % dev)
350 # invoke ifdown for the old configuration
351 os.system("/sbin/ifdown %s" % dev)
352 # wait a few secs for ifdown to complete
355 logger.log('replacing configuration for %s' % dev)
356 # replace ifcfg-$dev configuration file
357 os.rename(tmpnam,path)
361 # tmpnam & path are identical
366 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
367 for line in fb.readlines():
369 if parts[0][0]=="#":continue
370 if parts[0].find('='):
371 name,value = parts[0].split('=')
372 # clean up name & value
374 value = value.strip()
375 value = value.strip("'")
376 value = value.strip('"')
377 cfgvariables[name]=value
381 if name in cfgvariables:
382 value=cfgvariables[name]
383 value = value.lower()
387 # skip over device configs with ONBOOT=no
388 if getvar("ONBOOT") == 'no': continue
390 # don't bring up slave devices, the network scripts will
391 # handle those correctly
392 if getvar("SLAVE") == 'yes': continue
395 logger.verbose('net:InitInterfaces bringing up %s' % dev)
396 os.system("/sbin/ifup %s" % dev)
398 if __name__ == "__main__":
402 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
403 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
404 parser.add_option("-r", "--root", action="store", type="string",
405 dest="root", default=None)
406 parser.add_option("-f", "--files-only", action="store_true",
408 parser.add_option("-p", "--program", action="store", type="string",
409 dest="program", default="plnet")
410 (options, args) = parser.parse_args()
411 if len(args) != 1 or options.root is None:
413 print >>sys.stderr, "Missing root or node_id"
417 node = shell.GetNodes({'node_id': [int(args[0])]})
419 interfaces = shell.GetInterfaces({'interface_id': node[0]['interface_ids']})
420 except AttributeError:
421 interfaces = shell.GetNodeNetworks({'nodenetwork_id':node[0]['nodenetwork_ids']})
425 data = {'hostname': node[0]['hostname'], 'interfaces': interfaces}
427 def __init__(self, verbose):
428 self.verbosity = verbose
429 def log(self, msg, loglevel=2):
432 def verbose(self, msg):
434 l = logger(options.verbose)
435 InitInterfaces(l, shell, data, options.root, options.files_only)