+# -*- python-indent: 4 -*-
+
"""
Description: IPv6 Support and Management to Slices
ipv6 nodemanager plugin
priority=4
-radvdConfFile = '/etc/radvd.conf'
+radvd_conf_file = '/etc/radvd.conf'
+sliversipv6prefixtag = 'sliversipv6prefix'
def start():
logger.log("ipv6: plugin starting up...")
-def buildLibvirtDefaultNetConfig(dom):
-
- # create the <network> element
- networkElem = dom.createElement("network")
- # create <name> element
- nameElem = dom.createElement("name")
- textName = dom.createTextNode("default")
- nameElem.appendChild(textName)
- # create <uuid> element
- uuidElem = dom.createElement("uuid")
- textUUID = dom.createTextNode(str(uuid.uuid1()))
- uuidElem.appendChild(textUUID)
- # create <forward> element
- forwardElem = dom.createElement("forward")
- forwardElem.setAttribute("mode", "nat")
- # create <nat> element
- natElem = dom.createElement("nat")
- # create <port> element
- portElem = dom.createElement("port")
- portElem.setAttribute("end", "65535")
- portElem.setAttribute("start", "1024")
- # create the ipv4 <ip> element
- ipElem0 = dom.createElement("ip")
- ipElem0.setAttribute("address", "192.168.122.1")
- ipElem0.setAttribute("netmask", "255.255.255.0")
- # create the <dhcp> element
- dhcpElem = dom.createElement("dhcp")
- # create the <range> element
- rangeElem = dom.createElement("range")
- rangeElem.setAttribute("end", "192.168.122.254")
- rangeElem.setAttribute("start", "192.168.122.2")
- # create the <bridge> element
- bridgeElem = dom.createElement("bridge")
- bridgeElem.setAttribute("delay", "0")
- bridgeElem.setAttribute("name", "virbr0")
- bridgeElem.setAttribute("stp", "on")
-
- # build the whole thing
- natElem.appendChild(portElem)
- forwardElem.appendChild(natElem)
-
- dhcpElem.appendChild(rangeElem)
- ipElem0.appendChild(dhcpElem)
- networkElem.appendChild(nameElem)
- networkElem.appendChild(uuidElem)
- networkElem.appendChild(forwardElem)
- networkElem.appendChild(bridgeElem)
- networkElem.appendChild(ipElem0)
- return networkElem
-
-def checkForIPv6(defaultNetworkConfig):
- netnodes = defaultNetworkConfig.getElementsByTagName('network')
- hasIPv6 = False
- for netnode in netnodes:
- ips = netnode.getElementsByTagName('ip')
- for ip in ips:
- if ip.getAttribute('family')=='ipv6':
- logger.log("ipv6: the configuration already have an IPv6 address/prefix set for the slivers! %s/%s" % (ip.getAttribute('address'), ip.getAttribute('prefix')) )
- hasIPv6 = True
- return hasIPv6
-
-
-
-def addIPv6(defaultNetworkConfig, ipv6addr, prefix):
-
- netnodes = defaultNetworkConfig.getElementsByTagName('network')
- for netnode in netnodes:
- # create the ipv6 <ip> element 1
- ipElem1 = defaultNetworkConfig.createElement("ip")
- ipElem1.setAttribute("family", "ipv6")
- ipElem1.setAttribute("address", ipv6addr)
- ipElem1.setAttribute("prefix", prefix)
- # create the ipv6 <ip> element 2
- # it's ugly, I know, but we need a link-local address on the interface!
- ipElem2 = defaultNetworkConfig.createElement("ip")
- ipElem2.setAttribute("family", "ipv6")
- ipElem2.setAttribute("address", "fe80:1234::1")
- ipElem2.setAttribute("prefix", "64")
- # adding to the 'defaultNetworkConfig'
- netnode.appendChild(ipElem1)
- netnode.appendChild(ipElem2)
- return defaultNetworkConfig
-
-def changeIPv6(dom, ipv6addr, prefix):
- ips = dom.getElementsByTagName('ip')
- for ip in ips:
- if ip.getAttribute("family")=='ipv6' and not(re.match(r'fe80(.*)', ip.getAttribute("address"), re.I)):
- ip.setAttribute("address", ipv6addr)
- ip.setAttribute("prefix", prefix)
- return dom
-
-
-def removeIPv6(dom):
- networks = dom.getElementsByTagName('network')
- for network in networks:
- ips = network.getElementsByTagName('ip')
- for ip in ips:
- if ip.getAttribute("family")=='ipv6':
- network.removeChild(ip)
- return dom
-
-
-def checkIfIPv6IsDifferent(dom, ipv6addr, prefix):
- netnodes = dom.getElementsByTagName('network')
- for netnode in netnodes:
- ips = netnode.getElementsByTagName('ip')
- for ip in ips:
- if ip.getAttribute('family')=='ipv6' and not( re.match(r'fe80(.*)', ip.getAttribute("address"), re.I) ) and (ip.getAttribute('address')!=ipv6addr or ip.getAttribute('prefix')!=prefix):
- logger.log("ipv6: the IPv6 address or prefix are different. Change detected!")
- return True
-
- return False
-
-
-def setAutostart(network):
- try:
- network.setAutostart(1)
- except:
- logger.log("ipv6: network could not set to autostart")
-
-
-def setUp(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix):
- newXml = networkElem.toxml()
- #logger.log(networkElem.toxml())
- #ret = dir(conn)
- #for method in ret:
- # logger.log(repr(method))
- networkLibvirt.undefine()
- networkLibvirt.destroy()
- connLibvirt.networkCreateXML(newXml)
- networkDefault = connLibvirt.networkDefineXML(newXml)
- setAutostart(networkDefault)
- commandForwarding = ['sysctl', '-w', 'net.ipv6.conf.all.forwarding=1']
- logger.log_call(commandForwarding, timeout=15*60)
- configRadvd = """
+def build_libvirt_default_net_config(dom):
+
+ # create the <network> element
+ networkElem = dom.createElement("network")
+ # create <name> element
+ nameElem = dom.createElement("name")
+ textName = dom.createTextNode("default")
+ nameElem.appendChild(textName)
+ # create <uuid> element
+ uuidElem = dom.createElement("uuid")
+ textUUID = dom.createTextNode(str(uuid.uuid1()))
+ uuidElem.appendChild(textUUID)
+ # create <forward> element
+ forwardElem = dom.createElement("forward")
+ forwardElem.setAttribute("mode", "nat")
+ # create <nat> element
+ natElem = dom.createElement("nat")
+ # create <port> element
+ portElem = dom.createElement("port")
+ portElem.setAttribute("end", "65535")
+ portElem.setAttribute("start", "1024")
+ # create the ipv4 <ip> element
+ ipElem0 = dom.createElement("ip")
+ ipElem0.setAttribute("address", "192.168.122.1")
+ ipElem0.setAttribute("netmask", "255.255.255.0")
+ # create the <dhcp> element
+ dhcpElem = dom.createElement("dhcp")
+ # create the <range> element
+ rangeElem = dom.createElement("range")
+ rangeElem.setAttribute("end", "192.168.122.254")
+ rangeElem.setAttribute("start", "192.168.122.2")
+ # create the <bridge> element
+ bridgeElem = dom.createElement("bridge")
+ bridgeElem.setAttribute("delay", "0")
+ bridgeElem.setAttribute("name", "virbr0")
+ bridgeElem.setAttribute("stp", "on")
+
+ # build the whole thing
+ natElem.appendChild(portElem)
+ forwardElem.appendChild(natElem)
+
+ dhcpElem.appendChild(rangeElem)
+ ipElem0.appendChild(dhcpElem)
+ networkElem.appendChild(nameElem)
+ networkElem.appendChild(uuidElem)
+ networkElem.appendChild(forwardElem)
+ networkElem.appendChild(bridgeElem)
+ networkElem.appendChild(ipElem0)
+ return networkElem
+
+def check_for_ipv6(defaultNetworkConfig):
+ netnodes = defaultNetworkConfig.getElementsByTagName('network')
+ hasIPv6 = False
+ for netnode in netnodes:
+ ips = netnode.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute('family')=='ipv6':
+ logger.log("ipv6: IPv6 address/prefix already set for slivers! %s/%s" % \
+ (ip.getAttribute('address'), ip.getAttribute('prefix')) )
+ hasIPv6 = True
+ return hasIPv6
+
+
+def add_ipv6(defaultNetworkConfig, ipv6addr, prefix):
+
+ netnodes = defaultNetworkConfig.getElementsByTagName('network')
+ for netnode in netnodes:
+ # create the ipv6 <ip> element 1
+ ipElem1 = defaultNetworkConfig.createElement("ip")
+ ipElem1.setAttribute("family", "ipv6")
+ ipElem1.setAttribute("address", ipv6addr)
+ ipElem1.setAttribute("prefix", prefix)
+ # create the ipv6 <ip> element 2
+ # it's ugly, I know, but we need a link-local address on the interface!
+ ipElem2 = defaultNetworkConfig.createElement("ip")
+ ipElem2.setAttribute("family", "ipv6")
+ ipElem2.setAttribute("address", "fe80:1234::1")
+ ipElem2.setAttribute("prefix", "64")
+ # adding to the 'defaultNetworkConfig'
+ netnode.appendChild(ipElem1)
+ netnode.appendChild(ipElem2)
+ return defaultNetworkConfig
+
+def change_ipv6(dom, ipv6addr, prefix):
+ ips = dom.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute("family")=='ipv6' and not(re.match(r'fe80(.*)', ip.getAttribute("address"), re.I)):
+ ip.setAttribute("address", ipv6addr)
+ ip.setAttribute("prefix", prefix)
+ return dom
+
+
+def remove_ipv6(dom):
+ networks = dom.getElementsByTagName('network')
+ for network in networks:
+ ips = network.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute("family")=='ipv6':
+ network.removeChild(ip)
+ return dom
+
+
+def check_if_ipv6_is_different(dom, ipv6addr, prefix):
+ netnodes = dom.getElementsByTagName('network')
+ for netnode in netnodes:
+ ips = netnode.getElementsByTagName('ip')
+ for ip in ips:
+ if ip.getAttribute('family')=='ipv6' and \
+ not ( re.match(r'fe80(.*)', ip.getAttribute("address"), re.I) ) and \
+ (ip.getAttribute('address')!=ipv6addr or ip.getAttribute('prefix')!=prefix) :
+ logger.log("ipv6: the IPv6 address or prefix are different. Change detected!")
+ return True
+ return False
+
+
+def set_autostart(network):
+ try:
+ network.setAutostart(1)
+ except:
+ logger.log("ipv6: network could not set to autostart")
+
+
+def set_up(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix):
+ newXml = networkElem.toxml()
+ #logger.log(networkElem.toxml())
+ #ret = dir(conn)
+ #for method in ret:
+ # logger.log(repr(method))
+ networkLibvirt.undefine()
+ networkLibvirt.destroy()
+ connLibvirt.networkCreateXML(newXml)
+ networkDefault = connLibvirt.networkDefineXML(newXml)
+ set_autostart(networkDefault)
+ commandForwarding = ['sysctl', '-w', 'net.ipv6.conf.all.forwarding=1']
+ logger.log_call(commandForwarding, timeout=15*60)
+ configRadvd = """
interface virbr0
{
AdvSendAdvert on;
MinRtrAdvInterval 30;
MaxRtrAdvInterval 100;
- prefix %s
+ prefix %(ipv6addr)s/%(prefix)s
{
AdvOnLink on;
AdvAutonomous on;
};
};
-""" % (ipv6addr+"/"+prefix)
- f=open(radvdConfFile,'w')
+""" % locals()
+ with open(radvd_conf_file,'w') as f:
f.write(configRadvd)
- f.close()
- killRadvd()
- startRadvd()
- logger.log("ipv6: set up process finalized. Enabled IPv6 address to the slivers!")
+ kill_radvd()
+ start_radvd()
+ logger.log("ipv6: set up process finalized. Enabled IPv6 address to the slivers!")
-def cleanUp(networkLibvirt, connLibvirt, networkElem):
- dom = removeIPv6(networkElem)
+def clean_up(networkLibvirt, connLibvirt, networkElem):
+ dom = remove_ipv6(networkElem)
newXml = dom.toxml()
networkLibvirt.undefine()
networkLibvirt.destroy()
# TODO: set autostart for the network
connLibvirt.networkCreateXML(newXml)
networkDefault = connLibvirt.networkDefineXML(newXml)
- setAutostart(networkDefault)
- killRadvd()
+ set_autostart(networkDefault)
+ kill_radvd()
logger.log("ipv6: cleanup process finalized. The IPv6 support on the slivers was removed.")
-def killRadvd():
- commandKillRadvd = ['killall', 'radvd']
- logger.log_call(commandKillRadvd, timeout=15*60)
+def kill_radvd():
+ command_kill_radvd = ['killall', 'radvd']
+ logger.log_call(command_kill_radvd, timeout=15*60)
-def startRadvd():
- commandRadvd = ['radvd']
- logger.log_call(commandRadvd, timeout=15*60)
+def start_radvd():
+ commandRadvd = ['radvd']
+ logger.log_call(commandRadvd, timeout=15*60)
def GetSlivers(data, config, plc):
- #return
- #for sliver in data['slivers']:
- #ipv6addr,prefixlen = tools.get_sliver_ipv6(sliver['name'])
- #tools.add_ipv6addr_hosts_line(sliver['name'], data['hostname'], ipv6addr)
- #result = tools.search_ipv6addr_hosts(sliver['name'], ipv6addr)
- #logger.log("tools: result=%s" % (str(result)) )
- #tools.remove_all_ipv6addr_hosts(sliver['name'], data['hostname'])
- #return
-
-
type = 'sliver.LXC'
interfaces = data['interfaces']
logger.log(repr(interfaces))
for interface in interfaces:
- logger.log('ipv6: get interface 1: %r'%(interface))
- if 'interface_tag_ids' in interface:
- interface_tag_ids = "interface_tag_ids"
- interface_tag_id = "interface_tag_id"
- settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
- isSliversIPv6PrefixSet = False
- for setting in settings:
- #logger.log(repr(setting))
- # TODO: create a static variable to describe the "sliversipv6prefix" tag
- if setting['tagname']=='sliversipv6prefix':
- ipv6addrprefix = setting['value'].split('/', 1)
- ipv6addr = ipv6addrprefix[0]
- prefix = ipv6addrprefix[1]
- logger.log("ipv6: %s" % (ipv6addr) )
- validIPv6 = tools.isValidIPv6(ipv6addr)
- if not(validIPv6):
- logger.log("ipv6: the 'sliversipv6prefix' tag presented a non-valid IPv6 address!")
- else:
- # connecting to the libvirtd
- connLibvirt = Sliver_Libvirt.getConnection(type)
- list = connLibvirt.listAllNetworks()
- for networkLibvirt in list:
- xmldesc = networkLibvirt.XMLDesc()
- dom = parseString(xmldesc)
- hasIPv6 = checkForIPv6(dom)
- if hasIPv6:
- # let's first check if the IPv6 is different or is it the same...
- isDifferent = checkIfIPv6IsDifferent(dom, ipv6addr, prefix)
- if isDifferent:
- logger.log("ipv6: the tag 'sliversipv6prefix' was modified! Updating the configuration with the new one...")
- networkElem = changeIPv6(dom, ipv6addr, prefix)
- setUp(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix)
- logger.log("ipv6: trying to reboot the slivers...")
- tools.reboot_sliver('blah')
- else:
- logger.log("ipv6: starting to redefine the virtual network...")
- #networkElem = buildLibvirtDefaultNetConfig(dom,ipv6addr,prefix)
- networkElem = addIPv6(dom, ipv6addr, prefix)
- setUp(networkLibvirt, connLibvirt, networkElem, ipv6addr, prefix)
- logger.log("ipv6: trying to reboot the slivers...")
- tools.reboot_sliver('blah')
- isSliversIPv6PrefixSet = True
- if not(isSliversIPv6PrefixSet):
- # connecting to the libvirtd
- connLibvirt = Sliver_Libvirt.getConnection(type)
- list = connLibvirt.listAllNetworks()
- for networkLibvirt in list:
- xmldesc = networkLibvirt.XMLDesc()
- dom = parseString(xmldesc)
- if checkForIPv6(dom):
- cleanUp(networkLibvirt, connLibvirt, dom)
- logger.log("ipv6: trying to reboot the slivers...")
- tools.reboot_sliver('blah')
+ logger.log('ipv6: get interface: %r'%(interface))
+ if 'interface_tag_ids' in interface:
+ interface_tag_ids = "interface_tag_ids"
+ interface_tag_id = "interface_tag_id"
+ settings = plc.GetInterfaceTags({interface_tag_id:interface[interface_tag_ids]})
+ is_slivers_ipv6_prefix_set = False
+ for setting in settings:
+ if setting['tagname']==sliversipv6prefixtag:
+ ipv6addrprefix = setting['value'].split('/', 1)
+ ipv6addr = ipv6addrprefix[0]
+ valid_prefix = False
+ if len(ipv6addrprefix)>1:
+ prefix = ipv6addrprefix[1]
+ if prefix>0 and prefix<=64:
+ valid_prefix = True
+ else:
+ valid_prefix = False
+ else:
+ valid_prefix = False
+ logger.log("ipv6: '%s'=%s" % (sliversipv6prefixtag,ipv6addr) )
+ valid_ipv6 = tools.is_valid_ipv6(ipv6addr)
+ if not(valid_ipv6):
+ logger.log("ipv6: the 'sliversipv6prefix' tag presented a non-valid IPv6 address!")
+ elif not(valid_prefix):
+ logger.log("ipv6: the '%s' tag does not present a valid prefix " +
+ "(e.g., '/64', '/58')!" % (sliversipv6prefixtag) )
+ else:
+ # connecting to the libvirtd
+ connLibvirt = Sliver_Libvirt.getConnection(type)
+ list = connLibvirt.listAllNetworks()
+ for networkLibvirt in list:
+ xmldesc = networkLibvirt.XMLDesc()
+ dom = parseString(xmldesc)
+ has_ipv6 = check_for_ipv6(dom)
+ if has_ipv6:
+ # let's first check if the IPv6 is different or is it the same...
+ is_different = check_if_ipv6_is_different(dom, ipv6addr, prefix)
+ if is_different:
+ logger.log("ipv6: tag 'sliversipv6prefix' was modified! " +
+ "Updating configuration with the new one...")
+ network_elem = change_ipv6(dom, ipv6addr, prefix)
+ set_up(networkLibvirt, connLibvirt, network_elem, ipv6addr, prefix)
+ logger.log("ipv6: trying to reboot the slivers...")
+ tools.reboot_slivers()
+ else:
+ logger.log("ipv6: starting to redefine the virtual network...")
+ #network_elem = buildLibvirtDefaultNetConfig(dom,ipv6addr,prefix)
+ network_elem = add_ipv6(dom, ipv6addr, prefix)
+ set_up(networkLibvirt, connLibvirt, network_elem, ipv6addr, prefix)
+ logger.log("ipv6: trying to reboot the slivers...")
+ tools.reboot_slivers()
+ is_slivers_ipv6_prefix_set = True
+ if not(is_slivers_ipv6_prefix_set):
+ # connecting to the libvirtd
+ connLibvirt = Sliver_Libvirt.getConnection(type)
+ list = connLibvirt.listAllNetworks()
+ for networkLibvirt in list:
+ xmldesc = networkLibvirt.XMLDesc()
+ dom = parseString(xmldesc)
+ if check_for_ipv6(dom):
+ clean_up(networkLibvirt, connLibvirt, dom)
+ logger.log("ipv6: trying to reboot the slivers...")
+ tools.reboot_slivers()
logger.log("ipv6: all done!")
git://git.onelab.eu / nodemanager.git / blobdiff