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'
return (cgroup_fn, pid)
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Basically this method is just a copy from "get_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
+# it is LXC or vserver
+###################################################
+def get_sliver_process_lxc(slice_name, process_cmdline):
+ """ Utility function to find a process inside of an LXC sliver. Returns
+ (cgroup_fn, pid). cgroup_fn is the filename of the cgroup file for
+ the process, for example /proc/2592/cgroup. Pid is the process id of
+ the process. If the process is not found then (None, None) is returned.
+ """
+ try:
+ cmd = 'grep %s /proc/*/cgroup | grep freezer'%slice_name
+ output = os.popen(cmd).readlines()
+ except:
+ # the slice couldn't be found
+ logger.log("get_sliver_process: couldn't find slice %s" % slice_name)
+ return (None, None)
+
+ cgroup_fn = None
+ 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) )
+
+ 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
+ except:
+ #logger.log("tools: break!")
+ break
+
+ if (not cgroup_fn) or (not pid):
+ logger.log("get_sliver_process: process %s not running in slice %s" % (process_cmdline, slice_name))
+ return (None, None)
+
+ return (cgroup_fn, pid)
+
+
def get_sliver_ifconfig(slice_name, device="eth0"):
""" return the output of "ifconfig" run from inside the sliver.
return result
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Basically this method is just a copy from "get_sliver_ifconfig()", but,
+# instead, calls the "get_sliver_process_lxc()" method.
+# Only for LXC!
+# TODO: maybe merge both methods, and put the type as an argument, if
+# it is LXC or vserver
+###################################################
+def get_sliver_ifconfig_lxc(slice_name, device="eth0"):
+ """ return the output of "ifconfig" run from inside the sliver.
+
+ side effects: adds "/usr/sbin" to sys.path
+ """
+
+ # See if setns is installed. If it's not then we're probably not running
+ # LXC.
+ if not os.path.exists("/usr/sbin/setns.so"):
+ return None
+
+ # setns is part of lxcsu and is installed to /usr/sbin
+ if not "/usr/sbin" in sys.path:
+ sys.path.append("/usr/sbin")
+ import setns
+
+ (cgroup_fn, pid) = get_sliver_process_lxc(slice_name, "/sbin/init")
+ if (not cgroup_fn) or (not pid):
+ return None
+
+ path = '/proc/%s/ns/net'%pid
+
+ result = None
+ try:
+ setns.chcontext(path)
+
+ args = ["/sbin/ifconfig", device]
+ sub = subprocess.Popen(args, stderr = subprocess.PIPE, stdout = subprocess.PIPE)
+ sub.wait()
+
+ if (sub.returncode != 0):
+ logger.log("get_slice_ifconfig: error in ifconfig: %s" % sub.stderr.read())
+
+ result = sub.stdout.read()
+ finally:
+ setns.chcontext("/proc/1/ns/net")
+
+ return result
+
+
def get_sliver_ip(slice_name):
ifconfig = get_sliver_ifconfig(slice_name)
if not ifconfig:
return None
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Get the slice ipv6 address
+# Only for LXC!
+###################################################
+def get_sliver_ipv6(slice_name):
+ ifconfig = get_sliver_ifconfig_lxc(slice_name)
+ if not ifconfig:
+ return None,None
+
+ # 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)
+ return None,None
+
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# 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
+
### this returns the kind of virtualization on the node
# either 'vs' or 'lxc'
# also caches it in /etc/planetlab/virt for next calls
_has_systemctl = (subprocess.call([ 'systemctl', '--help' ]) == 0)
return _has_systemctl
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# This method was developed to support the ipv6 plugin
+# 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()) )
+
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Get the /etc/hosts file path
+###################################################
+def get_hosts_file_path(slicename):
+ containerDir = os.path.join(sliver_lxc.Sliver_LXC.CON_BASE_DIR, slicename)
+ logger.log("tools: %s" % (containerDir) )
+ return os.path.join(containerDir, 'etc', 'hosts')
+
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Search if there is a specific ipv6 address in the /etc/hosts file of a given slice
+###################################################
+def search_ipv6addr_hosts(slicename, ipv6addr):
+ 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
+ except:
+ logger.log("tools: error when finding ipv6 address %s in the /etc/hosts file of slice=%s" % (ipv6addr, slicename) )
+
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Removes all ipv6 addresses from the /etc/hosts file of a given slice
+###################################################
+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()
+ except:
+ logger.log("tools: could not delete the ipv6 address from the hosts file of slice=%s" % (slicename) )
+
+###################################################
+# Author: Guilherme Sperb Machado <gsm@machados.org>
+###################################################
+# Adds an ipv6 address to the /etc/hosts file within a slice
+###################################################
+def add_ipv6addr_hosts_line(slicename, node, ipv6addr):
+ hostsFilePath = get_hosts_file_path(slicename)
+ logger.log("tools: %s" % (hostsFilePath) )
+ # debugging purposes:
+ #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()
+ except:
+ logger.log("tools: could not add the IPv6 address to the hosts file of slice=%s" % (slicename) )
+
+
+
# how to run a command in a slice
# now this is a painful matter
# the problem is with capsh that forces a bash command to be injected in its exec'ed command
git://git.onelab.eu / nodemanager.git / blobdiff