"""network configuration"""
-import sioc
-import bwlimit
-import logger
-import string
-import iptables
-import os
+# system provided modules
+import os, string, time, socket, modprobe
+
+# local modules
+import sioc, bwlimit, logger, iptables
def GetSlivers(plc, data):
+ InitInterfaces(plc, data)
InitNodeLimit(data)
InitI2(plc, data)
InitNAT(plc, data)
for network in data['networks']:
# Get interface name preferably from MAC address, falling
# back on IP address.
- if macs.has_key(network['mac']):
- dev = macs[network['mac'].lower()]
- elif ips.has_key(network['ip']):
+ hwaddr=network['mac']
+ if hwaddr <> None: hwaddr=hwaddr.lower()
+ if hwaddr in macs:
+ dev = macs[network['mac']]
+ elif network['ip'] in ips:
dev = ips[network['ip']]
else:
logger.log('%s: no such interface with address %s/%s' % (network['hostname'], network['ip'], network['mac']))
for network in data['networks']:
# Get interface name preferably from MAC address, falling
# back on IP address.
- if macs.has_key(network['mac']):
- dev = macs[network['mac'].lower()]
- elif ips.has_key(network['ip']):
+ hwaddr=network['mac']
+ if hwaddr <> None: hwaddr=hwaddr.lower()
+ if hwaddr in macs:
+ dev = macs[network['mac']]
+ elif network['ip'] in ips:
dev = ips[network['ip']]
else:
logger.log('%s: no such interface with address %s/%s' % (network['hostname'], network['ip'], network['mac']))
settings = plc.GetNodeNetworkSettings({'nodenetwork_setting_id': network['nodenetwork_setting_ids']})
except:
continue
- # XXX arbitrary names
+
for setting in settings:
if setting['category'].upper() != 'FIREWALL':
continue
ipt.add_pf(fields)
ipt.commit()
+def InitInterfaces(plc, data):
+ sysconfig = "/etc/sysconfig/network-scripts"
+
+ # query running network interfaces
+ devs = sioc.gifconf()
+ ips = dict(zip(devs.values(), devs.keys()))
+ macs = {}
+ for dev in devs:
+ macs[sioc.gifhwaddr(dev).lower()] = dev
+
+ # assume data['networks'] contains this node's NodeNetworks
+ interfaces = {}
+ interface = 1
+ hostname = data.get('hostname',socket.gethostname())
+ networks = data.get('networks',())
+ failedToGetSettings = False
+ for network in networks:
+ logger.log('interface %d: %s'%(interface,network))
+ logger.log('macs = %s' % macs)
+ logger.log('ips = %s' % ips)
+ # Get interface name preferably from MAC address, falling back
+ # on IP address.
+ hwaddr=network['mac']
+ if hwaddr <> None: hwaddr=hwaddr.lower()
+ if hwaddr in macs:
+ orig_ifname = macs[hwaddr]
+ elif network['ip'] in ips:
+ orig_ifname = ips[network['ip']]
+ else:
+ orig_ifname = None
+
+ if orig_ifname:
+ logger.log('orig_ifname = %s' % orig_ifname)
+
+ inter = {}
+ inter['ONBOOT']='yes'
+ inter['USERCTL']='no'
+ if network['mac']:
+ inter['HWADDR'] = network['mac']
+
+ if network['method'] == "static":
+ inter['BOOTPROTO'] = "static"
+ inter['IPADDR'] = network['ip']
+ inter['NETMASK'] = network['netmask']
+
+ elif network['method'] == "dhcp":
+ inter['BOOTPROTO'] = "dhcp"
+ if network['hostname']:
+ inter['DHCP_HOSTNAME'] = network['hostname']
+ else:
+ inter['DHCP_HOSTNAME'] = hostname
+ if not network['is_primary']:
+ inter['DHCLIENTARGS'] = "-R subnet-mask"
+
+ if len(network['nodenetwork_setting_ids']) > 0:
+ try:
+ settings = plc.GetNodeNetworkSettings({'nodenetwork_setting_id':
+ network['nodenetwork_setting_ids']})
+ except:
+ logger.log("FATAL: failed call GetNodeNetworkSettings({'nodenetwork_setting_id':{%s})"% \
+ network['nodenetwork_setting_ids'])
+ failedToGetSettings = True
+ continue # on to the next network
+
+ for setting in settings:
+ # to explicitly set interface name
+ settingname = setting['name'].upper()
+ if settingname in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
+ inter[settingname]=setting['value']
+ else:
+ logger.log("WARNING: ignored setting named %s"%setting['name'])
+
+ # support aliases to interfaces either by name or HWADDR
+ if 'ALIAS' in inter:
+ if 'HWADDR' in inter:
+ hwaddr = inter['HWADDR'].lower()
+ del inter['HWADDR']
+ if hwaddr in macs:
+ hwifname = macs[hwaddr]
+ if ('IFNAME' in inter) and inter['IFNAME'] <> hwifname:
+ logger.log("WARNING: alias ifname (%s) and hwaddr ifname (%s) do not match"%\
+ (inter['IFNAME'],hwifname))
+ inter['IFNAME'] = hwifname
+ else:
+ logger.log('WARNING: mac addr %s for alias not found' %(hwaddr,alias))
+
+ if 'IFNAME' in inter:
+ # stupid RH /etc/sysconfig/network-scripts/ifup-aliases:new_interface()
+ # checks if the "$DEVNUM" only consists of '^[0-9A-Za-z_]*$'. Need to make
+ # our aliases compliant.
+ parts = inter['ALIAS'].split('_')
+ isValid=True
+ for part in parts:
+ isValid=isValid and part.isalnum()
+
+ if isValid:
+ interfaces["%s:%s" % (inter['IFNAME'],inter['ALIAS'])] = inter
+ else:
+ logger.log("WARNING: interface alias (%s) not a valid string for RH ifup-aliases"% inter['ALIAS'])
+ else:
+ logger.log("WARNING: interface alias (%s) not matched to an interface"% inter['ALIAS'])
+ interface -= 1
+ else:
+ if ('IFNAME' not in inter) and not orig_ifname:
+ ifname="eth%d" % (interface-1)
+ # should check if $ifname is an eth already defines
+ if os.path.exists("%s/ifcfg-%s"%(sysconfig,ifname)):
+ logger.log("WARNING: possibly blowing away %s configuration"%ifname)
+ else:
+ if ('IFNAME' not in inter) and orig_ifname:
+ ifname = orig_ifname
+ else:
+ ifname = inter['IFNAME']
+ interface -= 1
+ interfaces[ifname] = inter
+
+ m = modprobe.Modprobe()
+ m.input("/etc/modprobe.conf")
+ for (dev, inter) in interfaces.iteritems():
+ # get the driver string "moduleName option1=a option2=b"
+ driver=inter.get('DRIVER','')
+ if driver <> '':
+ driver=driver.split()
+ kernelmodule=driver[0]
+ m.aliasset(dev,kernelmodule)
+ options=" ".join(driver[1:])
+ if options <> '':
+ m.optionsset(dev,options)
+ m.output("/etc/modprobe.conf")
+
+ # clean up after any ifcfg-$dev script that's no longer listed as
+ # part of the NodeNetworks associated with this node
+
+ # list all network-scripts
+ files = os.listdir(sysconfig)
+
+ # filter out the ifcfg-* files
+ ifcfgs=[]
+ for f in files:
+ if f.find("ifcfg-") == 0:
+ ifcfgs.append(f)
+
+ # remove loopback (lo) from ifcfgs list
+ lo = "ifcfg-lo"
+ if lo in ifcfgs: ifcfgs.remove(lo)
+
+ # remove known devices from icfgs list
+ for (dev, inter) in interfaces.iteritems():
+ ifcfg = 'ifcfg-'+dev
+ if ifcfg in ifcfgs: ifcfgs.remove(ifcfg)
+
+ # delete the remaining ifcfgs from
+ deletedSomething = False
+
+ if not failedToGetSettings:
+ for ifcfg in ifcfgs:
+ dev = ifcfg[len('ifcfg-'):]
+ path = "%s/ifcfg-%s" % (sysconfig,dev)
+ logger.log("removing %s %s"%(dev,path))
+ ifdown = os.popen("/sbin/ifdown %s" % dev)
+ ifdown.close()
+ deletedSomething=True
+ os.unlink(path)
+
+ # wait a bit for the one or more ifdowns to have taken effect
+ if deletedSomething:
+ time.sleep(2)
+
+ # Process ifcg-$dev changes / additions
+ newdevs = []
+ for (dev, inter) in interfaces.iteritems():
+ tmpnam = os.tmpnam()
+ f = file(tmpnam, "w")
+ f.write("# Autogenerated by NodeManager/net.py.... do not edit!\n")
+ if 'DRIVER' in inter:
+ f.write("# using %s driver for device %s\n" % (inter['DRIVER'],dev))
+ f.write('DEVICE="%s"\n' % dev)
+
+ # print the configuration values
+ for (key, val) in inter.iteritems():
+ if key not in ('IFNAME','ALIAS','CFGOPTIONS','DRIVER'):
+ f.write('%s="%s"\n' % (key, val))
+
+ # print the configuration specific option values (if any)
+ if 'CFGOPTIONS' in inter:
+ cfgoptions = inter['CFGOPTIONS']
+ f.write('#CFGOPTIONS are %s\n' % cfgoptions)
+ for cfgoption in cfgoptions.split():
+ key,val = cfgoption.split('=')
+ key=key.strip()
+ key=key.upper()
+ val=val.strip()
+ f.write('%s="%s"\n' % (key,val))
+ f.close()
+
+ # compare whether two files are the same
+ def comparefiles(a,b):
+ try:
+ logger.log("comparing %s with %s" % (a,b))
+ if not os.path.exists(a): return False
+ fb = open(a)
+ buf_a = fb.read()
+ fb.close()
+
+ if not os.path.exists(b): return False
+ fb = open(b)
+ buf_b = fb.read()
+ fb.close()
+
+ return buf_a == buf_b
+ except IOError, e:
+ return False
+
+ path = "%s/ifcfg-%s" % (sysconfig,dev)
+ if not os.path.exists(path):
+ logger.log('adding configuration for %s' % dev)
+ # add ifcfg-$dev configuration file
+ os.rename(tmpnam,path)
+ os.chmod(path,0644)
+ newdevs.append(dev)
+
+ elif not comparefiles(tmpnam,path):
+ logger.log('Configuration change for %s' % dev)
+ logger.log('ifdown %s' % dev)
+ # invoke ifdown for the old configuration
+ p = os.popen("/sbin/ifdown %s" % dev)
+ p.close()
+ # wait a few secs for ifdown to complete
+ time.sleep(2)
+
+ logger.log('replacing configuration for %s' % dev)
+ # replace ifcfg-$dev configuration file
+ os.rename(tmpnam,path)
+ os.chmod(path,0644)
+ newdevs.append(dev)
+ else:
+ # tmpnam & path are identical
+ os.unlink(tmpnam)
+
+ for dev in newdevs:
+ cfgvariables = {}
+ fb = file("%s/ifcfg-%s"%(sysconfig,dev),"r")
+ for line in fb.readlines():
+ parts = line.split()
+ if parts[0][0]=="#":continue
+ if parts[0].find('='):
+ name,value = parts[0].split('=')
+ # clean up name & value
+ name = name.strip()
+ value = value.strip()
+ value = value.strip("'")
+ value = value.strip('"')
+ cfgvariables[name]=value
+ fb.close()
+
+ def getvar(name):
+ if name in cfgvariables:
+ value=cfgvariables[name]
+ value = value.lower()
+ return value
+ return ''
+
+ # skip over device configs with ONBOOT=no
+ if getvar("ONBOOT") == 'no': continue
+
+ # don't bring up slave devices, the network scripts will
+ # handle those correctly
+ if getvar("SLAVE") == 'yes': continue
+
+ logger.log('bringing up %s' % dev)
+ p = os.popen("/sbin/ifup %s" % dev)
+ # check for failure?
+ p.close()
+
def start(options, config):
pass
git://git.onelab.eu / nodemanager.git / blobdiff