+# -*- python-indent: 4 -*-
+
"""
Description: IPv6 Support and Management to Slices
ipv6 nodemanager plugin
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
+ # 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
-
+ 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 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
+ 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
+ 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
+ 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
+ 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")
+ 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 = """
+ 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 = """
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(radvdConfFile,'w') as f:
f.write(configRadvd)
- f.close()
- killRadvd()
- startRadvd()
- logger.log("ipv6: set up process finalized. Enabled IPv6 address to the slivers!")
+ killRadvd()
+ startRadvd()
+ logger.log("ipv6: set up process finalized. Enabled IPv6 address to the slivers!")
def cleanUp(networkLibvirt, connLibvirt, networkElem):
dom = removeIPv6(networkElem)
logger.log_call(commandKillRadvd, timeout=15*60)
def startRadvd():
- commandRadvd = ['radvd']
- logger.log_call(commandRadvd, timeout=15*60)
+ 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']
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_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))
+ #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 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: tag 'sliversipv6prefix' was modified! " +
+ "Updating 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')
+ # 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: all done!")
+# -*- python-indent: 4 -*-
+
"""
Description: Update the IPv6 Address sliver tag accordingly to the IPv6 address set
update_ipv6addr_slivertag nodemanager plugin
def getSliverTagId(slivertags):
- for slivertag in slivertags:
- if slivertag['tagname']==ipv6addrtag:
- return slivertag['slice_tag_id']
- return None
+ for slivertag in slivertags:
+ if slivertag['tagname']==ipv6addrtag:
+ return slivertag['slice_tag_id']
+ return None
def SetSliverTag(plc, data, tagname):
for slice in data['slivers']:
- logger.log("update_ipv6addr_slivertag: starting the update procedure for slice=%s" % (slice['name']) )
+ logger.log("update_ipv6addr_slivertag: starting with slice=%s" % (slice['name']) )
# TODO: what about the prefixlen? should we add on it as well?
# here, I'm just taking the ipv6addr (value)
# logger.log(repr(str(tag)))
ipv6addr = plc.GetSliceIPv6Address(slice['name'])
- logger.log("update_ipv6addr_slivertag: slice=%s getSliceIPv6Address=%s" % (slice['name'],ipv6addr) )
- # if the value to set is null...
+ logger.log("update_ipv6addr_slivertag: slice=%s getSliceIPv6Address=%s" % \
+ (slice['name'],ipv6addr) )
+ # if the value to set is null...
if value is None:
- if ipv6addr is not None:
- # then, let's remove the slice tag
- slivertag_id = getSliverTagId(slivertags)
- if slivertag_id:
- try:
- plc.DeleteSliceTag(slivertag_id)
- logger.log("update_ipv6addr_slivertag: slice tag deleted for slice=%s" % (slice['name']) )
- except:
- logger.log("update_ipv6addr_slivertag: slice tag not deleted for slice=%s" % (slice['name']) )
- # if there's no ipv6 address anymore, then remove everything from the /etc/hosts
- tools.remove_all_ipv6addr_hosts(slice['name'], data['hostname'])
+ if ipv6addr is not None:
+ # then, let's remove the slice tag
+ slivertag_id = getSliverTagId(slivertags)
+ if slivertag_id:
+ try:
+ plc.DeleteSliceTag(slivertag_id)
+ logger.log("update_ipv6addr_slivertag: slice tag deleted for slice=%s" % \
+ (slice['name']) )
+ except:
+ logger.log("update_ipv6addr_slivertag: slice tag not deleted for slice=%s" % \
+ (slice['name']) )
+ # if there's no ipv6 address anymore, then remove everything from the /etc/hosts
+ tools.remove_all_ipv6addr_hosts(slice['name'], data['hostname'])
else:
- # if the ipv6 addr set on the slice does not exist yet, so, let's add it
- if (ipv6addr is None) and len(value)>0:
- try:
- logger.log("update_ipv6addr_slivertag: slice name=%s" % (slice['name']) )
- slivertag_id=plc.AddSliceTag(slice['name'],tagname,value,node_id)
- logger.log("update_ipv6addr_slivertag: slice tag added to slice %s" % (slice['name']) )
- except:
- logger.log("update_ipv6addr_slivertag: could not set ipv6 addr tag to the sliver. slice=%s tag=%s node_id=%d" % (slice['name'],tagname,node_id) )
- # if the ipv6 addr set on the slice is different on the value provided, let's update it
- if (ipv6addr is not None) and (len(value)>0) and (ipv6addr!=value):
- slivertag_id = getSliverTagId(slivertags)
- plc.UpdateSliceTag(slivertag_id,value)
- # ipv6 entry on /etc/hosts of each slice
- result = tools.search_ipv6addr_hosts(slice['name'], value)
- if not result:
- tools.remove_all_ipv6addr_hosts(slice['name'], data['hostname'])
- tools.add_ipv6addr_hosts_line(slice['name'], data['hostname'], value)
- logger.log("update_ipv6addr_slivertag: finishing the update process for slice=%s" % (slice['name']) )
+ # if the ipv6 addr set on the slice does not exist yet, so, let's add it
+ if (ipv6addr is None) and len(value)>0:
+ try:
+ logger.log("update_ipv6addr_slivertag: slice name=%s" % (slice['name']) )
+ slivertag_id=plc.AddSliceTag(slice['name'],tagname,value,node_id)
+ logger.log("update_ipv6addr_slivertag: slice tag added to slice %s" % \
+ (slice['name']) )
+ except:
+ logger.log("update_ipv6addr_slivertag: could not set ipv6 addr tag to sliver. "+
+ "slice=%s tag=%s node_id=%d" % (slice['name'],tagname,node_id) )
+ # if the ipv6 addr set on the slice is different on the value provided, let's update it
+ if (ipv6addr is not None) and (len(value)>0) and (ipv6addr!=value):
+ slivertag_id = getSliverTagId(slivertags)
+ plc.UpdateSliceTag(slivertag_id,value)
+ # ipv6 entry on /etc/hosts of each slice
+ result = tools.search_ipv6addr_hosts(slice['name'], value)
+ if not result:
+ tools.remove_all_ipv6addr_hosts(slice['name'], data['hostname'])
+ tools.add_ipv6addr_hosts_line(slice['name'], data['hostname'], value)
+ logger.log("update_ipv6addr_slivertag: finishing the update process for " +
+ "slice=%s" % (slice['name']) )
def GetSlivers(data, config, plc):
+# -*- python-indent: 4 -*-
+
"""A few things that didn't seem to fit anywhere else."""
import os, os.path
import sys
import signal
-###################################################
-# Added by Guilherme Sperb Machado <gsm@machados.org>
-###################################################
-
-import re
-import socket
-import fileinput
-
-# TODO: is there anything better to do if the "libvirt", "sliver_libvirt",
-# and "sliver_lxc" are not in place?
-try:
- import libvirt
- from sliver_libvirt import Sliver_Libvirt
- import sliver_lxc
-except:
- logger.log("Could not import sliver_lxc or libvirt or sliver_libvirt -- which is required here.")
-###################################################
-
import logger
PID_FILE = '/var/run/nodemanager.pid'
os.dup2(crashlog, 2)
def fork_as(su, function, *args):
- """fork(), cd / to avoid keeping unused directories open, close all nonstandard file descriptors (to avoid capturing open sockets), fork() again (to avoid zombies) and call <function> with arguments <args> in the grandchild process. If <su> is not None, set our group and user ids appropriately in the child process."""
+ """
+fork(), cd / to avoid keeping unused directories open,
+close all nonstandard file descriptors (to avoid capturing open sockets),
+fork() again (to avoid zombies) and call <function>
+with arguments <args> in the grandchild process.
+If <su> is not None, set our group and user ids
+ appropriately in the child process.
+ """
child_pid = os.fork()
if child_pid == 0:
try:
####################
# manage files
def pid_file():
- """We use a pid file to ensure that only one copy of NM is running at a given time.
+ """
+We use a pid file to ensure that only one copy of NM is running at a given time.
If successful, this function will write a pid file containing the pid of the current process.
-The return value is the pid of the other running process, or None otherwise."""
+The return value is the pid of the other running process, or None otherwise.
+ """
other_pid = None
if os.access(PID_FILE, os.F_OK): # check for a pid file
handle = open(PID_FILE) # pid file exists, read it
return other_pid
def write_file(filename, do_write, **kw_args):
- """Write file <filename> atomically by opening a temporary file, using <do_write> to write that file, and then renaming the temporary file."""
+ """
+Write file <filename> atomically by opening a temporary file,
+using <do_write> to write that file, and then renaming the temporary file.
+ """
shutil.move(write_temp_file(do_write, **kw_args), filename)
def write_temp_file(do_write, mode=None, uidgid=None):
finally: f.close()
return temporary_filename
-# replace a target file with a new contents - checks for changes
-# can handle chmod if requested
-# can also remove resulting file if contents are void, if requested
-# performs atomically:
-# writes in a tmp file, which is then renamed (from sliverauth originally)
-# returns True if a change occurred, or the file is deleted
def replace_file_with_string (target, new_contents, chmod=None, remove_if_empty=False):
+ """
+Replace a target file with a new contents
+checks for changes: does not do anything if previous state was already right
+can handle chmod if requested
+can also remove resulting file if contents are void, if requested
+performs atomically:
+writes in a tmp file, which is then renamed (from sliverauth originally)
+returns True if a change occurred, or the file is deleted
+ """
try:
current=file(target).read()
except:
if chmod: os.chmod(target,chmod)
return True
-
####################
# utilities functions to get (cached) information from the node
return (cgroup_fn, pid)
+###################################################
+# Added by Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+
+import re
+import socket
+import fileinput
+
+# TODO: is there anything better to do if the "libvirt", "sliver_libvirt",
+# and "sliver_lxc" are not in place?
+try:
+ import libvirt
+ from sliver_libvirt import Sliver_Libvirt
+ import sliver_lxc
+except:
+ logger.log("Could not import sliver_lxc or libvirt or sliver_libvirt -- which is required here.")
+###################################################
+
###################################################
# Author: Guilherme Sperb Machado <gsm@machados.org>
###################################################
-# Basically this method is just a copy from "get_process()", just
+# Basically this method is just a copy from "get_sliver_process()", just
# adding one more split() to correctly parse the processes for LXC.
# Only for LXC!
# TODO: maybe merge both methods, and put the type as an argument, if
pid = None
for e in output:
try:
- l = e.rstrip()
- #logger.log("tools: l=%s" % (l) )
- path = l.split(':')[0]
- #logger.log("tools: path=%s" % (path) )
- comp = l.rsplit(':')[-1]
- #logger.log("tools: comp=%s" % (comp) )
- slice_name_check1 = comp.rsplit('/')[-1]
- #logger.log("tools: slice_name_check1=%s" % (slice_name_check1) )
- slice_name_check2 = slice_name_check1.rsplit('.')[0]
- #logger.log("tools: slice_name_check2=%s" % (slice_name_check2) )
+ l = e.rstrip()
+ #logger.log("tools: l=%s" % (l) )
+ path = l.split(':')[0]
+ #logger.log("tools: path=%s" % (path) )
+ comp = l.rsplit(':')[-1]
+ #logger.log("tools: comp=%s" % (comp) )
+ slice_name_check1 = comp.rsplit('/')[-1]
+ #logger.log("tools: slice_name_check1=%s" % (slice_name_check1) )
+ slice_name_check2 = slice_name_check1.rsplit('.')[0]
+ #logger.log("tools: slice_name_check2=%s" % (slice_name_check2) )
if (slice_name_check2 == slice_name):
- slice_path = path
- pid = slice_path.split('/')[2]
- #logger.log("tools: pid=%s" % (pid) )
- cmdline = open('/proc/%s/cmdline'%pid).read().rstrip('\n\x00')
- #logger.log("tools: cmdline=%s" % (cmdline) )
- #logger.log("tools: process_cmdline=%s" % (process_cmdline) )
- if (cmdline == process_cmdline):
- cgroup_fn = slice_path
- break
+ slice_path = path
+ pid = slice_path.split('/')[2]
+ #logger.log("tools: pid=%s" % (pid) )
+ cmdline = open('/proc/%s/cmdline'%pid).read().rstrip('\n\x00')
+ #logger.log("tools: cmdline=%s" % (cmdline) )
+ #logger.log("tools: process_cmdline=%s" % (process_cmdline) )
+ if (cmdline == process_cmdline):
+ cgroup_fn = slice_path
+ break
except:
- #logger.log("tools: break!")
+ #logger.log("tools: break!")
break
if (not cgroup_fn) or (not pid):
# example: 'inet6 2001:67c:16dc:1302:5054:ff:fea7:7882 prefixlen 64 scopeid 0x0<global>'
prog = re.compile(r'inet6\s+(.*)\s+prefixlen\s+(\d+)\s+scopeid\s+(.+)<global>')
for line in ifconfig.split("\n"):
- search = prog.search(line)
- if search:
- ipv6addr = search.group(1)
- prefixlen = search.group(2)
- return (ipv6addr,prefixlen)
+ search = prog.search(line)
+ if search:
+ ipv6addr = search.group(1)
+ prefixlen = search.group(2)
+ return (ipv6addr,prefixlen)
return None,None
###################################################
# Check if the address is a AF_INET6 family address
###################################################
def isValidIPv6(ipv6addr):
- try:
- socket.inet_pton(socket.AF_INET6, ipv6addr)
- except socket.error:
- return False
- return True
+ try:
+ socket.inet_pton(socket.AF_INET6, ipv6addr)
+ except socket.error:
+ return False
+ return True
### this returns the kind of virtualization on the node
# either 'vs' or 'lxc'
# Only for LXC!
###################################################
def reboot_sliver(name):
- type = 'sliver.LXC'
- # connecting to the libvirtd
- connLibvirt = Sliver_Libvirt.getConnection(type)
- domains = connLibvirt.listAllDomains()
- for domain in domains:
- #ret = dir(domain)
- #for method in ret:
- # logger.log("ipv6: " + repr(method))
- #logger.log("tools: " + str(domain.name()) )
- try:
- domain.destroy()
- logger.log("tools: %s destroyed" % (domain.name()) )
- domain.create()
- logger.log("tools: %s created" % (domain.name()) )
- except:
- logger.log("tools: %s could not be rebooted" % (domain.name()) )
+ type = 'sliver.LXC'
+ # connecting to the libvirtd
+ connLibvirt = Sliver_Libvirt.getConnection(type)
+ domains = connLibvirt.listAllDomains()
+ for domain in domains:
+ #ret = dir(domain)
+ #for method in ret:
+ # logger.log("ipv6: " + repr(method))
+ #logger.log("tools: " + str(domain.name()) )
+ try:
+ domain.destroy()
+ logger.log("tools: %s destroyed" % (domain.name()) )
+ domain.create()
+ logger.log("tools: %s created" % (domain.name()) )
+ except:
+ logger.log("tools: %s could not be rebooted" % (domain.name()) )
###################################################
# Author: Guilherme Sperb Machado <gsm@machados.org>
hostsFilePath = get_hosts_file_path(slicename)
found=False
try:
- for line in fileinput.input(r'%s' % (hostsFilePath)):
- if re.search(r'%s' % (ipv6addr), line):
- found=True
- fileinput.close()
- return found
+ for line in fileinput.input(r'%s' % (hostsFilePath)):
+ if re.search(r'%s' % (ipv6addr), line):
+ found=True
+ fileinput.close()
+ return found
except:
logger.log("tools: error when finding ipv6 address %s in the /etc/hosts file of slice=%s" % (ipv6addr, slicename) )
def remove_all_ipv6addr_hosts(slicename, node):
hostsFilePath = get_hosts_file_path(slicename)
try:
- for line in fileinput.input(r'%s' % (hostsFilePath), inplace=True):
- logger.log("tools: line=%s" % (line) )
- search = re.search(r'^(.*)\s+(%s|%s)$' % (node,'localhost'), line)
- if search:
- ipv6candidate = search.group(1)
- ipv6candidatestrip = ipv6candidate.strip()
- logger.log("tools: group1=%s" % (ipv6candidatestrip) )
- valid = isValidIPv6(ipv6candidatestrip)
- if not valid:
- logger.log("tools: address=%s not valid" % (ipv6candidatestrip) )
- print line,
- fileinput.close()
+ for line in fileinput.input(r'%s' % (hostsFilePath), inplace=True):
+ logger.log("tools: line=%s" % (line) )
+ search = re.search(r'^(.*)\s+(%s|%s)$' % (node,'localhost'), line)
+ if search:
+ ipv6candidate = search.group(1)
+ ipv6candidatestrip = ipv6candidate.strip()
+ logger.log("tools: group1=%s" % (ipv6candidatestrip) )
+ valid = isValidIPv6(ipv6candidatestrip)
+ if not valid:
+ logger.log("tools: address=%s not valid" % (ipv6candidatestrip) )
+ print line,
+ fileinput.close()
except:
- logger.log("tools: could not delete the ipv6 address from the hosts file of slice=%s" % (slicename) )
+ logger.log("tools: could not delete the ipv6 address from the hosts file of slice=%s" % (slicename) )
###################################################
# Author: Guilherme Sperb Machado <gsm@machados.org>
#string = "127.0.0.1\tlocalhost\n192.168.100.179\tmyplc-node1-vm.mgmt.local\n"
#string = "127.0.0.1\tlocalhost\n"
try:
- with open(hostsFilePath, "a") as file:
- # debugging purposes only:
- #file.write(string)
- file.write(ipv6addr + " " + node + "\n")
- file.close()
+ with open(hostsFilePath, "a") as file:
+ # debugging purposes only:
+ #file.write(string)
+ file.write(ipv6addr + " " + node + "\n")
+ file.close()
except:
- logger.log("tools: could not add the IPv6 address to the hosts file of slice=%s" % (slicename) )
+ logger.log("tools: could not add the IPv6 address to the hosts file of slice=%s" % (slicename) )
git://git.onelab.eu / nodemanager.git / commitdiff