1 #!/usr/bin/python /usr/bin/plcsh
12 def InitInterfaces(logger, plc, data, root="", files_only=False, program="NodeManager"):
13 sysconfig = "%s/etc/sysconfig/network-scripts" % root
15 # query running network interfaces
17 ips = dict(zip(devs.values(), devs.keys()))
20 macs[sioc.gifhwaddr(dev).lower()] = dev
22 # assume data['networks'] contains this node's NodeNetworks
25 hostname = data.get('hostname',socket.gethostname())
26 networks = data['networks']
27 failedToGetSettings = False
28 for network in networks:
29 logger.verbose('net:InitInterfaces interface %d: %s'%(interface,network))
30 logger.verbose('net:InitInterfaces macs = %s' % macs)
31 logger.verbose('net:InitInterfaces ips = %s' % ips)
32 # Get interface name preferably from MAC address, falling back
35 if hwaddr <> None: hwaddr=hwaddr.lower()
37 orig_ifname = macs[hwaddr]
38 elif network['ip'] in ips:
39 orig_ifname = ips[network['ip']]
44 logger.verbose('net:InitInterfaces orig_ifname = %s' % orig_ifname)
50 inter['HWADDR'] = network['mac']
52 if network['method'] == "static":
53 inter['BOOTPROTO'] = "static"
54 inter['IPADDR'] = network['ip']
55 inter['NETMASK'] = network['netmask']
57 elif network['method'] == "dhcp":
58 inter['BOOTPROTO'] = "dhcp"
59 if network['hostname']:
60 inter['DHCP_HOSTNAME'] = network['hostname']
62 inter['DHCP_HOSTNAME'] = hostname
63 if not network['is_primary']:
64 inter['DHCLIENTARGS'] = "-R subnet-mask"
66 if len(network['nodenetwork_setting_ids']) > 0:
68 settings = plc.GetNodeNetworkSettings({'nodenetwork_setting_id':
69 network['nodenetwork_setting_ids']})
71 logger.log("net:InitInterfaces FATAL: failed call GetNodeNetworkSettings({'nodenetwork_setting_id':{%s})"% \
72 network['nodenetwork_setting_ids'])
73 failedToGetSettings = True
74 continue # on to the next network
76 for setting in settings:
77 # to explicitly set interface name
78 settingname = setting['name'].upper()
79 if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
80 inter[settingname]=setting['value']
82 logger.log("net:InitInterfaces WARNING: ignored setting named %s"%setting['name'])
84 # support aliases to interfaces either by name or HWADDR
87 hwaddr = inter['HWADDR'].lower()
90 hwifname = macs[hwaddr]
91 if ('IFNAME' in inter) and inter['IFNAME'] <> hwifname:
92 logger.log("net:InitInterfaces WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
93 (inter['IFNAME'],hwifname))
94 inter['IFNAME'] = hwifname
96 logger.log('net:InitInterfaces WARNING: mac addr %s for alias not found' %(hwaddr,alias))
99 # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
100 # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
101 # our aliases compliant.
102 parts = inter['ALIAS'].split('_')
105 isValid=isValid and part.isalnum()
108 interfaces["%s:%s" % (inter['IFNAME'],inter['ALIAS'])] = inter
110 logger.log("net:InitInterfaces WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% inter['ALIAS'])
112 logger.log("net:InitInterfaces WARNING: interface alias (%s) not matched to an interface"% inter['ALIAS'])
115 if ('IFNAME' not in inter) and not orig_ifname:
116 ifname="eth%d" % (interface-1)
117 # should check if $ifname is an eth already defines
118 if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
119 logger.log("net:InitInterfaces WARNING: possibly blowing away %s configuration"%ifname)
121 if ('IFNAME' not in inter) and orig_ifname:
124 ifname = inter['IFNAME']
126 interfaces[ifname] = inter
128 m = modprobe.Modprobe()
130 m.input("%s/etc/modprobe.conf" % root, program)
133 for (dev, inter) in interfaces.iteritems():
134 # get the driver string "moduleName option1=a option2=b"
135 driver=inter.get('DRIVER','')
137 driver=driver.split()
138 kernelmodule=driver[0]
139 m.aliasset(dev,kernelmodule)
140 options=" ".join(driver[1:])
142 m.optionsset(dev,options)
143 m.output("%s/etc/modprobe.conf" % root)
145 # clean up after any ifcfg-$dev script that's no longer listed as
146 # part of the NodeNetworks associated with this node
148 # list all network-scripts
149 files = os.listdir(sysconfig)
151 # filter out the ifcfg-* files
154 if f.find("ifcfg-") == 0:
157 # remove loopback (lo) from ifcfgs list
159 if lo in ifcfgs: ifcfgs.remove(lo)
161 # remove known devices from icfgs list
162 for (dev, inter) in interfaces.iteritems():
164 if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
166 # delete the remaining ifcfgs from
167 deletedSomething = False
169 if not failedToGetSettings:
171 dev = ifcfg[len('ifcfg-'):]
172 path = "%s/ifcfg-%s" % (sysconfig,dev)
174 logger.verbose("net:InitInterfaces removing %s %s"%(dev,path))
175 os.system("/sbin/ifdown %s" % dev)
176 deletedSomething=True
179 # wait a bit for the one or more ifdowns to have taken effect
183 # Process ifcg-$dev changes / additions
185 for (dev, inter) in interfaces.iteritems():
186 (fd, tmpnam) = tempfile.mkstemp(dir=sysconfig)
187 f = os.fdopen(fd, "w")
188 f.write("# Autogenerated by NodeManager/net.py.... do not edit!\n")
189 if 'DRIVER' in inter:
190 f.write("# using %s driver for device %s\n" % (inter['DRIVER'],dev))
191 f.write('DEVICE="%s"\n' % dev)
193 # print the configuration values
194 for (key, val) in inter.iteritems():
195 if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
196 f.write('%s="%s"\n' % (key, val))
198 # print the configuration specific option values (if any)
199 if 'CFGOPTIONS' in inter:
200 cfgoptions = inter['CFGOPTIONS']
201 f.write('#CFGOPTIONS are %s\n' % cfgoptions)
202 for cfgoption in cfgoptions.split():
203 key,val = cfgoption.split('=')
207 f.write('%s="%s"\n' % (key,val))
210 # compare whether two files are the same
211 def comparefiles(a,b):
213 logger.verbose("net:InitInterfaces comparing %s with %s" % (a,b))
214 if not os.path.exists(a): return False
219 if not os.path.exists(b): return False
224 return buf_a == buf_b
228 path = "%s/ifcfg-%s" % (sysconfig,dev)
229 if not os.path.exists(path):
230 logger.verbose('net:InitInterfaces adding configuration for %s' % dev)
231 # add ifcfg-$dev configuration file
232 os.rename(tmpnam,path)
236 elif not comparefiles(tmpnam,path):
237 logger.verbose('net:InitInterfaces Configuration change for %s' % dev)
239 logger.verbose('net:InitInterfaces ifdown %s' % dev)
240 # invoke ifdown for the old configuration
241 os.system("/sbin/ifdown %s" % dev)
242 # wait a few secs for ifdown to complete
245 logger.log('replacing configuration for %s' % dev)
246 # replace ifcfg-$dev configuration file
247 os.rename(tmpnam,path)
251 # tmpnam & path are identical
256 fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
257 for line in fb.readlines():
259 if parts[0][0]=="#":continue
260 if parts[0].find('='):
261 name,value = parts[0].split('=')
262 # clean up name & value
264 value = value.strip()
265 value = value.strip("'")
266 value = value.strip('"')
267 cfgvariables[name]=value
271 if name in cfgvariables:
272 value=cfgvariables[name]
273 value = value.lower()
277 # skip over device configs with ONBOOT=no
278 if getvar("ONBOOT") == 'no': continue
280 # don't bring up slave devices, the network scripts will
281 # handle those correctly
282 if getvar("SLAVE") == 'yes': continue
285 logger.verbose('net:InitInterfaces bringing up %s' % dev)
286 os.system("/sbin/ifup %s" % dev)
288 if __name__ == "__main__":
292 parser = optparse.OptionParser(usage="plnet [-v] [-f] [-p <program>] -r root node_id")
293 parser.add_option("-v", "--verbose", action="store_true", dest="verbose")
294 parser.add_option("-r", "--root", action="store", type="string",
295 dest="root", default=None)
296 parser.add_option("-f", "--files-only", action="store_true",
298 parser.add_option("-p", "--program", action="store", type="string",
299 dest="program", default="plnet")
300 (options, args) = parser.parse_args()
301 if len(args) != 1 or options.root is None:
302 print >>sys.stderr, "Missing root or node_id"
306 node = shell.GetNodes({'node_id': [int(args[0])]})
307 networks = shell.GetNodeNetworks({'nodenetwork_id': node[0]['nodenetwork_ids']})
309 data = {'hostname': node[0]['hostname'], 'networks': networks}
311 def __init__(self, verbose):
312 self.verbosity = verbose
313 def log(self, msg, loglevel=2):
316 def verbose(self, msg):
318 l = logger(options.verbose)
319 InitInterfaces(l, shell, data, options.root, options.files_only)