import libvirt
import sys
+from string import Template
+
states = {
libvirt.VIR_DOMAIN_NOSTATE: 'no state',
libvirt.VIR_DOMAIN_RUNNING: 'running',
libvirt.VIR_DOMAIN_CRASHED: 'crashed',
}
+def randomMAC():
+ mac = [ random.randint(0x00, 0xff),
+ random.randint(0x00, 0xff),
+ random.randint(0x00, 0xff),
+ random.randint(0x00, 0xff),
+ random.randint(0x00, 0xff),
+ random.randint(0x00, 0xff) ]
+ return ':'.join(map(lambda x: "%02x" % x, mac))
+
class Sliver_LV(accounts.Account):
"""This class wraps LibVirt commands"""
SHELL = '/bin/sh'
- # Using /bin/bash triggers destroy root/site_admin (?!?)
- TYPE = 'sliver.LIBVIRT'
+
# Need to add a tag at myplc to actually use this account
# type = 'sliver.LIBVIRT'
-
- def __init__(self, rec):
- self.name = rec['name']
- print "LIBVIRT %s __init__"%(self.name)
- logger.verbose ('sliver_libvirt: %s init'%(self.name))
-
- self.dir = '/vservers/%s'%(self.name)
-
- # Assume the directory with the image and config files
- # are in place
-
- self.config = '%s/config.xml'%(self.dir)
- self.lxc_log = '%s/log'%(self.dir)
- self.keys = ''
- self.rspec = {}
- self.slice_id = rec['slice_id']
- self.disk_usage_initialized = False
- self.initscript = ''
- self.enabled = True
- conn = Sliver_LV.getConnection()
- try:
- self.container = conn.lookupByName(self.name)
- except:
- print "Unexpected error:", sys.exc_info()[0]
+ TYPE = 'sliver.LIBVIRT'
+
@staticmethod
def create(name, rec = None):
print "LIBVIRT %s create"%(name)
logger.verbose ('sliver_libvirt: %s create'%(name))
dir = '/vservers/%s'%(name)
- config = '%s/config.xml'%(dir)
- lxc_log = '%s/log'%(dir)
+ # Template for sliver configuration
+ template = Template(open('/vservers/config_template.xml').read())
+ config = template.substitute(name=name)
+
+ lxc_log = '%s/log'%(dir)
+
+ # TODO: copy the sliver FS to the correct path if sliver does not
+ # exist. Update MAC addresses and insert an entry on the libvirt DHCP
+ # server to get an actual known IP. Some sort of pool?
if not (os.path.isdir(dir) and
os.access(dir, os.R_OK | os.W_OK | os.X_OK)):
logger.verbose('lxc_create: directory %s does not exist or wrong perms'%(dir))
return
+
+ # TODO: set hostname
+ file('/vservers/%s/rootfs/etc/hostname' % name, 'w').write(name)
# Get a connection and lookup for the sliver before actually
# defining it, just in case it was already defined.
try:
dom = conn.lookupByName(name)
except:
- xml = open(config).read()
- dom = conn.defineXML(xml)
+ dom = conn.defineXML(config)
print Sliver_LV.info(dom)
@staticmethod
logger.verbose('sliver_libvirt: %s domain does not exists'%(name))
print "Unexpected error:", sys.exc_info()[0]
+ def __init__(self, rec):
+ self.name = rec['name']
+ print "LIBVIRT %s __init__"%(self.name)
+ logger.verbose ('sliver_libvirt: %s init'%(self.name))
+
+ self.dir = '/vservers/%s'%(self.name)
+
+ # Assume the directory with the image and config files
+ # are in place
+
+ self.keys = ''
+ self.rspec = {}
+ self.slice_id = rec['slice_id']
+ self.disk_usage_initialized = False
+ self.initscript = ''
+ self.enabled = True
+ conn = Sliver_LV.getConnection()
+ try:
+ self.container = conn.lookupByName(self.name)
+ except:
+ print "Unexpected error:", sys.exc_info()[0]
def configure(self, rec):
''' Allocate resources and fancy configuration stuff '''
def start(self, delay=0):
''' Just start the sliver '''
print "LIBVIRT %s start"%(self.name)
- if self.rspec['enabled'] <= 0:
- logger.log('sliver_libvirt: not starting %s, is not enabled'%(self.name))
- return
- else:
- logger.log('sliver_libvirt: %s starting...' % (self.name))
# Check if it's running to avoid throwing an exception if the
# domain was already running, create actually means start
import logger
import subprocess
import os
+import libvirt
+import sys
+
+def test_template():
+
+ xml_template = """
+ <domain type='lxc'>
+ <name>test_1</name>
+ <memory>32768</memory>
+ <os>
+ <type>exe</type>
+ <init>/bin/sh</init>
+ </os>
+ <vcpu>1</vcpu>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/libexec/libvirt_lxc</emulator>
+ <filesystem type='mount'>
+ <source dir='/vservers/test_1/rootfs/'/>
+ <target dir='/'/>
+ </filesystem>
+ <interface type='network'>
+ <source network='default'/>
+ </interface>
+ <console type='pty' />
+ </devices>
+ </domain>"""
+
+ return xml_template
+
+def createConnection():
+ conn = libvirt.open('lxc:///')
+ if conn == None:
+ print 'Failed to open connection to LXC hypervisor'
+ sys.exit(1)
+ else: return conn
+
+
+states = {
+ libvirt.VIR_DOMAIN_NOSTATE: 'no state',
+ libvirt.VIR_DOMAIN_RUNNING: 'running',
+ libvirt.VIR_DOMAIN_BLOCKED: 'blocked on resource',
+ libvirt.VIR_DOMAIN_PAUSED: 'paused by user',
+ libvirt.VIR_DOMAIN_SHUTDOWN: 'being shut down',
+ libvirt.VIR_DOMAIN_SHUTOFF: 'shut off',
+ libvirt.VIR_DOMAIN_CRASHED: 'crashed',
+}
+
+def info(dom):
+ [state, maxmem, mem, ncpu, cputime] = dom.info()
+ return '%s is %s,\nmaxmem = %s, mem = %s, ncpu = %s, cputime = %s' % (dom.name(), states.get(state, state), maxmem, mem, ncpu, cputime)
class Sliver_LXC(accounts.Account):
"""This class wraps LXC commands"""
-
+
SHELL = '/bin/sh'
# Using /bin/bash triggers destroy root/site_admin (?!?)
TYPE = 'sliver.LXC'
self.name = rec['name']
print "LXC __init__ %s"%(self.name)
logger.verbose ('sliver_lxc: %s init'%self.name)
-
+
self.dir = '/vservers/%s'%(self.name)
# Assume the directory with the image and config files
self.disk_usage_initialized = False
self.initscript = ''
self.enabled = True
- self.configure(rec)
+ self.connection = createConnection()
@staticmethod
def create(name, rec = None):
command += ['/bin/bash','-x',]
command += ['/usr/bin/lxc-create', '-n', name, '-f', config, '&']
print command
- subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT, shell=False)
-
+ #subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT, shell=False)
+ conn = createConnection()
+ try:
+ dom0 = conn.lookupByName(name)
+ except:
+ dom0 = conn.defineXML(test_template())
+ print info(dom0)
+
@staticmethod
def destroy(name):
''' lxc_destroy '''
if state == 'RUNNING': return True
else: return False
-
+
git://git.onelab.eu / nodemanager.git / commitdiff