import os
import libvirt
import sys
+from string import Template
+import sliver_libvirt as lv
-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)
+URI = 'lxc://'
class Sliver_LXC(accounts.Account):
"""This class wraps LXC commands"""
- SHELL = '/bin/sh'
- # Using /bin/bash triggers destroy root/site_admin (?!?)
+ SHELL = '/bin/sshsh'
+
TYPE = 'sliver.LXC'
# Need to add a tag at myplc to actually use this account
# type = 'sliver.LXC'
+
+ @staticmethod
+ def create(name, rec=None):
+ conn = lv.getConnection(URI)
+
+ # Template for libvirt sliver configuration
+ try:
+ with open('/vservers/.lvref/config_template.xml') as f:
+ template = Template(f.read())
+ config = template.substitute(name=name)
+ except IOError:
+ logger.log('Cannot find XML template file')
+ return
+
+ lv.create(name, config, rec, conn)
+
+ @staticmethod
+ def destroy(name):
+ conn = lv.getConnection(URI)
+ lv.destroy(name, conn)
+
def __init__(self, rec):
self.name = rec['name']
- print "LXC __init__ %s"%(self.name)
- logger.verbose ('sliver_lxc: %s init'%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
# are in place
- self.config = '%s/config'%(self.dir)
- self.fstab = '%s/fstab'%(self.dir)
- self.lxc_log = '%s/lxc.log'%(self.dir)
self.keys = ''
self.rspec = {}
self.slice_id = rec['slice_id']
self.disk_usage_initialized = False
self.initscript = ''
self.enabled = True
- self.connection = createConnection()
-
- @staticmethod
- def create(name, rec = None):
- ''' Create dirs, copy fs image, lxc_create '''
- print "LXC create %s"%(name)
- logger.verbose ('sliver_lxc: %s create'%name)
- dir = '/vservers/%s'%(name)
- config = '%s/config'%(dir)
- lxc_log = '%s/lxc.log'%(dir)
-
- if not (os.path.isdir(dir) and
- os.access(dir, os.R_OK | os.W_OK | os.X_OK)):
- print 'lxc_create: directory %s does not exist or wrong perms'%(dir)
- return
- # Assume for now that the directory is there and with a FS
- command=[]
- # be verbose
- 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)
- conn = createConnection()
+ self.conn = lv.getConnection(URI)
try:
- dom0 = conn.lookupByName(name)
+ self.container = self.conn.lookupByName(self.name)
except:
- dom0 = conn.defineXML(test_template())
- print info(dom0)
-
- @staticmethod
- def destroy(name):
- ''' lxc_destroy '''
- print "LXC destroy %s"%(name)
- dir = '/vservers/%s'%(name)
- lxc_log = '%s/lxc.log'%(dir)
- command=[]
- command += ['/usr/bin/lxc-destroy', '-n', name]
-
- subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT, shell=False)
- print "LXC destroy DONE"
-
- def configure(self, rec):
- print "LXC configure %s"%(self.name)
+ logger.verbose('sliver_libvirt: Unexpected error on %s: %s'%(self.name, sys.exc_info()[0]))
def start(self, delay=0):
- ''' Check existence? lxc_start '''
- print "LXC start %s"%(self.name)
- command=[]
- command += ['/usr/bin/lxc-start', '-n', self.name, '-d']
- print command
- subprocess.call(command, stdin=open('/dev/null', 'r'), stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT, shell=False)
+ lv.start(self.container)
def stop(self):
- ''' lxc_stop '''
- print "LXC stop %s"%(self.name)
-
+ lv.stop(self.container)
+
def is_running(self):
- print "LXC is_running %s"%(self.name)
- command = []
- command += ['/usr/bin/lxc-info -n %s'%(self.name)]
- print command
- p = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
- state = p.communicate()[0].split(' ')[2]
- print state
- if state == 'RUNNING': return True
- else: return False
+ lv.is_running(self.container)
-
+ def configure(self, rec):
+ ''' Allocate resources and fancy configuration stuff '''
+ logger.verbose('sliver_libvirt: %s configure'%(self.name))
+ accounts.Account.configure(self, rec)
git://git.onelab.eu / nodemanager.git / blobdiff