"""LXC slivers"""
import accounts
+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/bash'
+
+ SHELL = '/bin/sh'
+ # Using /bin/bash triggers destroy root/site_admin (?!?)
TYPE = 'sliver.LXC'
+ # Need to add a tag at myplc to actually use this account
+ # type = 'sliver.LXC'
+
+ def __init__(self, rec):
+ 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
+ # 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()
- def __init__(self):
- pass
-
@staticmethod
def create(name, rec = None):
- print "TODO create"
+ ''' 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()
+ try:
+ dom0 = conn.lookupByName(name)
+ except:
+ dom0 = conn.defineXML(test_template())
+ print info(dom0)
+
@staticmethod
def destroy(name):
- print "TODO destroy"
+ ''' 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)
def start(self, delay=0):
- print "TODO start"
-
+ ''' 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)
+
def stop(self):
- print "TODO stop"
+ ''' lxc_stop '''
+ print "LXC stop %s"%(self.name)
def is_running(self):
- print "TODO is_running"
+ 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
-
+
git://git.onelab.eu / nodemanager.git / blobdiff