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vm.py
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vm.py
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'''
Created on 2014-2-27
@author: ezonghu
'''
import re
import subprocess
password = "abc123\n"
mysql_user = "root"
mysql_password = "3r1cs50n"
def parse_mysql_nodes(nodes):
node_names = []
bound_flag = 0
for line in nodes.split('\n'):
m = line.split()
if len(m) == 1:
if m[0] == 'node':
bound_flag += 1
continue
if bound_flag == 1:
node_names.append(m[0])
return list(set(node_names))
def parse_mysql_node_infos(nodes):
node_infos = dict()
bound_flag = 0
for line in nodes.split('\n'):
m = line.split()
if len(m) == 4:
if m[0] == "uuid" and m[1] == "node":
bound_flag += 1
continue
if bound_flag == 1:
node_infos[m[0]] = {"node":m[1], "name":m[2], "status":m[3]}
return node_infos
def parse_mysql_port_infos(ports):
port_infos = dict()
bound_flag = 0
for line in ports.split('\n'):
m = line.split()
if len(m) == 3:
if m[0] == "id" and m[1] == "device_id":
bound_flag += 1
continue
if bound_flag == 1:
port_infos[m[0]]= {"device_id":m[1], "device_owner":m[2]}
return port_infos
def parse_nova_nodes(nova_list):
nova_computes=dict()
bound = re.compile("^\+-+\+-+\+-+\+-+\+$")
seperate = re.compile("^\|(.*)\|(.*)\|(.*)\|(.*)\|$")
bound_flag = 0
for line in nova_list.split('\n'):
m = bound.match(line)
if m is not None:
bound_flag += 1
if bound_flag == 2:
s = seperate.match(line)
if s is not None:
nova_computes[s.group(1).strip()]={"name":s.group(2).strip(),
"status":s.group(3).strip(),
"networks":s.group(4).strip()}
return nova_computes
def parse_quantum_ports_id(ports_string):
ports=[]
bound = re.compile("^\+-+\+-+\+-+\+-+\+$")
seperate = re.compile("^\|(.*)\|(.*)\|(.*)\|(.*)\|$")
bound_flag = 0
for line in ports_string.split('\n'):
m = bound.match(line)
if m is not None:
bound_flag += 1
if bound_flag == 2:
s = seperate.match(line)
if s is not None:
ports.append(s.group(1).strip())
return ports
def parse_quantum_port(port_res):
port = {}
bound = re.compile("^\+-+\+-+\+$")
seperate = re.compile("^\|(.*)\|(.*)\|$")
bound_flag = 0
for line in port_res.split('\n'):
m = bound.match(line)
if m is not None:
bound_flag += 1
if bound_flag == 2:
s = seperate.match(line)
if s is not None:
port[s.group(1).strip().lower()]=s.group(2).strip()
return port
def parse_brctl_show(br_res):
bridges = {}
curr_br_name = ""
for line in br_res.split("\n")[1:]:
br_infos = line.split()
if len(br_infos) == 4:
curr_br_name=br_infos[0]
bridges[curr_br_name]= [br_infos[3]]
elif len(br_infos)==1:
bridges[curr_br_name].append(br_infos[0])
return bridges
def parse_ifconfig(ifcfg_res):
intfs = []
for line in ifcfg_res.split("\n")[1:]:
if len(line.split()) > 1:
intfs.append(line.split()[0])
return intfs
def parse_ovs_vsctl_show(ovs_res):
Ovs_Br = {}
curr_br = ""
for line in ovs_res.split("\n"):
infos = line.split()
if infos == []:
continue
if "Bridge" == infos[0]:
curr_br = infos[1]
Ovs_Br[curr_br] = []
continue
if "Port" == infos[0]:
Ovs_Br[curr_br].append(infos[1].replace('"', ''))
continue
return Ovs_Br
def run_cmd(cmd, password=None):
print cmd
proc = subprocess.Popen([cmd], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
return proc.communicate(password)
def get_openstack_l2_by_mysql(HostName, pre_cmd=""):
global mysql_user, mysql_password
cmd = 'mysql -u %s --password=%s -D nova -e "select uuid, node, display_name, vm_state from instances where deleted=0 and node=\'%s\';"' % (mysql_user, mysql_password,HostName)
res, _err = run_cmd(cmd)
node_infos = parse_mysql_node_infos(res)
cmd = 'mysql -u %s --password=%s -D quantum -e "select id, device_id, device_owner from ports;"' % (mysql_user, mysql_password)
res, _err = run_cmd(cmd)
port_infos = parse_mysql_port_infos(res)
vm_ports_tab={}
for vm_id in node_infos:
if vm_id not in vm_ports_tab:
vm_ports_tab[vm_id]=[]
for port, info in port_infos.iteritems():
if info['device_id'] == vm_id:
vm_ports_tab[vm_id].append(port)
#get interface list
cmd = pre_cmd + " ifconfig -s"
res, _err = run_cmd(cmd)
intf_list = parse_ifconfig(res)
vm_tap_tab = {}
for vm, ports in vm_ports_tab.iteritems():
taps = []
for port in ports:
tap = "tap%s" % port[:11]
if tap in intf_list:
taps.append(tap)
vm_tap_tab[vm+"("+node_infos[vm]["name"]+")"]=taps
#get ovs br info
cmd = pre_cmd + ' sudo -S ovs-vsctl show'
print cmd
proc=subprocess.Popen([cmd], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
global password
res, _err = proc.communicate(password)
ovs_br_ports_tab = parse_ovs_vsctl_show(res)
#get linux br info
cmd = pre_cmd + " brctl show"
res, _err = run_cmd(cmd)
lbr_br_ports_tab = parse_brctl_show(res)
return HostName, vm_tap_tab, ovs_br_ports_tab, lbr_br_ports_tab, intf_list
def get_openstack_l2():
#get nova compute list
cmd = "nova list"
res, _err = run_cmd(cmd)
nova_nodes = parse_nova_nodes(res)
new_nova_nodes={}
for k, v in nova_nodes.iteritems():
if v['status'] == 'ACTIVE':
new_nova_nodes[k]=v
#get quantum port list
cmd = "quantum port-list"
res, _err = run_cmd(cmd)
ports_id = parse_quantum_ports_id(res)
vm_ports_tab = {}
#get detail port info
cmd = "quantum port-show %s"
for port_id in ports_id:
res, _err = run_cmd(cmd % port_id)
port_info = parse_quantum_port(res)
dev_id = port_info['device_id']
if dev_id in new_nova_nodes:
if not vm_ports_tab.has_key(dev_id):
vm_ports_tab[dev_id]=[port_id]
else:
vm_ports_tab[dev_id].append(port_id)
#get interface list
cmd = "ifconfig -s"
res, _err = run_cmd(cmd)
intf_list = parse_ifconfig(res)
vm_tap_tab = {}
for vm, ports in vm_ports_tab.iteritems():
taps = []
for port in ports:
tap = "tap%s" % port[:11]
if tap in intf_list:
taps.append(tap)
vm_tap_tab[vm]=taps
#get ovs br info
cmd = 'sudo -S ovs-vsctl show'
print cmd
proc=subprocess.Popen(['sudo -S ovs-vsctl show'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
global password
res, _err = proc.communicate(password)
ovs_br_ports_tab = parse_ovs_vsctl_show(res)
#get linux br info
cmd = "brctl show"
res, _err = run_cmd(cmd)
lbr_br_ports_tab = parse_brctl_show(res)
return new_nova_nodes, vm_tap_tab, ovs_br_ports_tab, lbr_br_ports_tab, intf_list
def get_node_relationships(HostName, vm_tap_tab, ovs_br_ports_tab, lbr_br_ports_tab, intf_list):
Nodes = {}
Links = []
for vm, taps in vm_tap_tab.iteritems():
Nodes[vm]="vm"
for tap in taps:
Links.append((vm, tap))
def get_br_port_links(br_port_tab):
for br, ports in br_port_tab.iteritems():
for p in ports:
if p[:3] in ("tap", "qvo","phy"):
Links.append((p,br))
elif p[:3] in ("qvb", "int", "eth") :
Links.append((br,p))
get_br_port_links(ovs_br_ports_tab)
get_br_port_links(lbr_br_ports_tab)
def get_veth_links(interfaces):
for intf in interfaces:
if intf[:3] in ('qvb','int'):
qvo = "qvo"+intf[3:]
phy = "phy"+intf[3:]
if qvo in interfaces:
Links.append((intf, qvo))
elif phy in interfaces:
Links.append((intf, phy))
get_veth_links(intf_list)
def get_intf_type(interfaces):
for intf in interfaces:
if intf[:2] == "br":
Nodes[intf]="ovs"
elif intf[:3] in ("qvb", "qvo", "int", "phy"):
Nodes[intf]="veth"
elif intf[:3] == 'qbr':
Nodes[intf]="br"
elif intf[:3] == "tap":
Nodes[intf] = "tap"
elif intf[:3] == "eth":
Nodes[intf] = "eth"
get_intf_type(intf_list)
return HostName, Nodes, list(set(Links))
import socket
def get_local_node_relationships():
return get_node_relationships(*get_openstack_l2_by_mysql(socket.gethostname()))
def get_remote_node_relationships():
cmd = 'mysql -u %s --password=%s -D nova -e "select node from instances where deleted=0 and node!=\'%s\';"' % (mysql_user, mysql_password, socket.gethostname())
res, _err = run_cmd(cmd)
remote_nodes = parse_mysql_nodes(res)
return [get_node_relationships(*get_openstack_l2_by_mysql(rn, 'ssh %s ' % rn)) for rn in remote_nodes ]
def get_all_node_relationships():
res = get_remote_node_relationships()
res.append(get_local_node_relationships())
return res
#print get_all_node_relationships()