def test_get_local_node__ok(self):
node = self.mocker.mock()
node.get_hostname()
self.mocker.result(socket.gethostname())
self.mocker.replay()
self.cluster.nodes = {socket.gethostname(): node}
self.assertEqual(self.cluster.get_local_node().get_hostname(), socket.gethostname())
def test_activate_vm__runing(self):
vmname = "test1.home.net"
node = self.mocker.mock()
node.is_vm_started(vmname)
self.mocker.result(True)
node.get_hostname()
self.mocker.result(socket.gethostname())
self.mocker.replay()
self.cluster.nodes = {socket.gethostname(): node}
self.assertRaises(cxm.node.RunningVmError, self.cluster.activate_vm, node, vmname)
def test_start_vm__ram_error(self):
vmname = "test1.home.net"
node = self.mocker.mock()
node.metrics.get_free_ram()
self.mocker.result(64)
self.mocker.count(1, None)
node.get_hostname()
self.mocker.result(socket.gethostname())
self.mocker.replay()
self.cluster.nodes = {socket.gethostname(): node}
self.assertRaises(cxm.node.NotEnoughRamError, self.cluster.start_vm, node, vmname, False)
def main():
"""Feed the snmp_xen MIB tree and start listening for snmp's passpersist"""
global pp
global node
syslog.openlog(sys.argv[0],syslog.LOG_PID)
retry_timestamp=int(time.time())
retry_counter=MAX_RETRY
while retry_counter>0:
try:
syslog.syslog(syslog.LOG_INFO,"Starting Xen monitoring...")
# Load helpers
pp=snmp.PassPersist(OID_BASE)
node=cxm.node.Node(platform.node())
# Set statics data
pp.add_str('1.1.0',node.get_hostname())
pp.add_gau('1.2.0',int(node.metrics.get_host_nr_cpus()))
oid=pp.encode("Domain-0")
pp.add_str('1.9.1.' + oid,'Domain-0')
pp.add_int('1.9.2.' + oid,0)
pp.add_gau('1.9.4.' + oid,2) # Always 2 VPCU for Dom0 (TODO: ask the Xen-API)
pp.start(update_data,POOLING_INTERVAL) # Should'nt return (except if updater thread has died)
except IOError, e:
if e.errno == errno.EPIPE:
syslog.syslog(syslog.LOG_INFO,"Snmpd had close the pipe, exiting...")
sys.exit(0)
except Exception, e:
syslog.syslog(syslog.LOG_WARNING,"Main thread as died: %s" % (e))
def main():
"""Feed the snmp_xen MIB tree and start listening for snmp's passpersist"""
global pp
global node
syslog.openlog(sys.argv[0], syslog.LOG_PID)
retry_timestamp = int(time.time())
retry_counter = MAX_RETRY
while retry_counter > 0:
try:
syslog.syslog(syslog.LOG_INFO, "Starting Xen monitoring...")
# Load helpers
pp = snmp.PassPersist(OID_BASE)
node = cxm.node.Node(platform.node())
# Set statics data
pp.add_str('1.1.0', node.get_hostname())
pp.add_gau('1.2.0', int(node.metrics.get_host_nr_cpus()))
oid = pp.encode("Domain-0")
pp.add_str('1.9.1.' + oid, 'Domain-0')
pp.add_int('1.9.2.' + oid, 0)
pp.add_gau('1.9.4.' + oid,
2) # Always 2 VPCU for Dom0 (TODO: ask the Xen-API)
pp.start(update_data, POOLING_INTERVAL
) # Should'nt return (except if updater thread has died)
except IOError, e:
if e.errno == errno.EPIPE:
syslog.syslog(syslog.LOG_INFO,
"Snmpd had close the pipe, exiting...")
sys.exit(0)
except Exception, e:
syslog.syslog(syslog.LOG_WARNING, "Main thread as died: %s" % (e))
def update_data():
"""Update snmp's data from cxm API"""
global pp
global node
global nr_cpu
# Load all stats once
vms=node.get_vms()
ram=node.metrics.get_ram_infos()
vgs_io=node.metrics.get_host_vgs_io()
net_io=node.metrics.get_host_net_io()
vms_stat=node.metrics.get_vms_record()
# Node infos
pp.add_str('1.1.0',node.get_hostname())
pp.add_gau('1.2.0',nr_cpu)
# Number of VM
pp.add_gau('1.3.0',len(vms))
# Number of used IRQ
pp.add_gau('1.4.0',node.metrics.get_used_irq())
# Ram infos
pp.add_gau('1.5.1.0',ram['used'])
pp.add_gau('1.5.2.0',ram['free'])
# Disk's IO
for name in vgs_io.keys():
oid=pp.encode(name)
pp.add_str('1.6.1.'+oid,name)
pp.add_cnt_32bit('1.6.2.'+oid,vgs_io[name]['Read'])
pp.add_cnt_32bit('1.6.3.'+oid,vgs_io[name]['Write'])
# Network's IO
for name in net_io['bridges'].keys():
oid=pp.encode(name)
pp.add_str('1.7.1.'+oid,name)
pp.add_cnt_32bit('1.7.2.'+oid,net_io['bridges'][name]['Rx'])
pp.add_cnt_32bit('1.7.3.'+oid,net_io['bridges'][name]['Tx'])
for name in net_io['vlans'].keys():
oid=pp.encode(name)
pp.add_str('1.8.1.'+oid,name)
pp.add_cnt_32bit('1.8.2.'+oid,net_io['vlans'][name]['Rx'])
pp.add_cnt_32bit('1.8.3.'+oid,net_io['vlans'][name]['Tx'])
# For each VM
for vm in vms:
oid=pp.encode(vm.name)
pp.add_str('1.9.1.'+oid,vm.name)
pp.add_int('1.9.2.'+oid,vm.id)
pp.add_gau('1.9.4.'+oid,vm.get_vcpu())
pp.add_gau('1.9.5.'+oid,vm.get_ram())
try:
# CPU Percentage relative to the host capacity and *100 to pass decimal through snmpd
pp.add_gau('1.9.3.'+oid,"%d" % (round(vms_stat[vm.name]['cpu']/nr_cpu,2)*100))
pp.add_cnt_32bit('1.9.6.'+oid,vms_stat[vm.name]['disk']['Read'])
pp.add_cnt_32bit('1.9.7.'+oid,vms_stat[vm.name]['disk']['Write'])
pp.add_cnt_32bit('1.9.8.'+oid,sum([ vif['Rx'] for vif in vms_stat[vm.name]['net'] ]))
pp.add_cnt_32bit('1.9.9.'+oid,sum([ vif['Tx'] for vif in vms_stat[vm.name]['net'] ]))
except KeyError, TypeError:
# If a VM has disappeared
continue
