def create(self):
"""Create a vm and vmi, find or create a network, and attach
the vmi to a new veth interface
Arguments:
vm_name name of the vm to create
net_name name of the netwok to arrach to
subnet x.x.x.x/len - optional if network already exists
netns Network namespace where the veth interface is bound to. Defaults to net_name
Returns:
A dict with the following elements:
port_id uuid of port
ip
veth name of veth interface
netns Network namespace where the veth interface is bound to
"""
# remember what to clean up if things go wrong
port_created = False
veth_created = False
netns_created = False
ip_created = False
vmi_created = False
vnet_created = False
vm_created = False
try:
# sanity check
net_name = self.args.get('net_name')
if not net_name:
raise ValueError("Network name argument is required")
# sanitize netns since it gets passed to the shell
netns = self.args.get('netns')
if not netns:
netns = net_name
if not re.match(r'^[-.\w]+$', netns):
raise ValueError("netns=[%s] must be a valid namespace name"
+ " (a single word)" % netns)
vnc_client = self.vnc_connect()
proj_fq_name = self.args['project'].split(':')
# find or create the VM
vm_fq_name = proj_fq_name + [ self.args['vm_name'] ]
# debug
#import pdb; pdb.set_trace()
try:
vm = vnc_client.virtual_machine_read(fq_name = vm_fq_name)
if vm:
raise ValueError(("Virtual machine named %s already exists."
+ " Use --delete to delete it")
% self.args['vm_name'])
except vnc_api.NoIdError:
# create vm if necessary
vm = vnc_api.VirtualMachine(':'.join(vm_fq_name),
fq_name=vm_fq_name)
vnc_client.virtual_machine_create(vm)
vm = vnc_client.virtual_machine_read(fq_name = vm_fq_name)
vm_created = True
# find or create the network
vnet_fq_name = proj_fq_name + [ net_name ]
vnet_created = False
try:
vnet = vnc_client.virtual_network_read(fq_name = vnet_fq_name)
except vnc_api.NoIdError:
# create the network if it doesn't exist
vnet = vnc_api.VirtualNetwork(vnet_fq_name[-1],
parent_type = 'project',
fq_name = vnet_fq_name)
# add a subnet
ipam = vnc_client.network_ipam_read(
fq_name = ['default-domain',
'default-project',
'default-network-ipam'])
(prefix, plen) = self.args['subnet'].split('/')
subnet = vnc_api.IpamSubnetType(
subnet = vnc_api.SubnetType(prefix, int(plen)))
vnet.add_network_ipam(ipam, vnc_api.VnSubnetsType([subnet]))
vnc_client.virtual_network_create(vnet)
vnet_created = True
# find or create the vmi
vmi_fq_name = vm.fq_name + ['0']
vmi_created = False
try:
vmi = vnc_client.virtual_machine_interface_read(
fq_name = vmi_fq_name)
except vnc_api.NoIdError:
vmi = vnc_api.VirtualMachineInterface(
parent_type = 'virtual-machine',
fq_name = vmi_fq_name)
vmi_created = True
vmi.set_virtual_network(vnet)
if vmi_created:
vnc_client.virtual_machine_interface_create(vmi)
else:
vnc_client.virtual_machine_interface_update(vmi)
# re-read the vmi to get its mac addresses
vmi = vnc_client.virtual_machine_interface_read(
fq_name = vmi_fq_name)
# create an IP for the VMI if it doesn't already have one
ips = vmi.get_instance_ip_back_refs()
if not ips:
ip = vnc_api.InstanceIp(vm.name + '.0')
ip.set_virtual_machine_interface(vmi)
ip.set_virtual_network(vnet)
ip_created = vnc_client.instance_ip_create(ip)
# Create the veth port. Create a veth pair. Put one end
# in the VMI port and the other in a network namespace
# get the ip, mac, and gateway from the vmi
ip_uuid = vmi.get_instance_ip_back_refs()[0]['uuid']
ip = vnc_client.instance_ip_read(id=ip_uuid).instance_ip_address
mac = vmi.virtual_machine_interface_mac_addresses.mac_address[0]
subnet = vnet.network_ipam_refs[0]['attr'].ipam_subnets[0]
gw = subnet.default_gateway
dns = gw # KLUDGE - that's the default, but some networks
# have other DNS configurations
ipnetaddr = netaddr.IPNetwork("%s/%s" %
(subnet.subnet.ip_prefix,
subnet.subnet.ip_prefix_len))
# set up the veth pair with one part for vrouter and one
# for the netns
# find a name that's not already used in the default or
# netns namespaces
link_exists = link_exists_func('', netns)
veth_vrouter = new_interface_name(suffix=vnet.uuid, prefix="ve1",
exists_func=link_exists)
veth_host = new_interface_name(suffix=vnet.uuid, prefix="ve0",
exists_func=link_exists)
sudo("ip link add %s type veth peer name %s",
(veth_vrouter, veth_host))
veth_created = True
try:
sudo("ip netns add %s", (netns,))
netns_created = True
except ProcessExecutionError:
pass
sudo("ip link set %s netns %s",
(veth_host, netns))
sudo("ip netns exec %s ip link set dev %s address %s",
(netns, veth_host, mac))
sudo("ip netns exec %s ip address add %s broadcast %s dev %s",
(netns,
("%s/%s" % (ip, subnet.subnet.ip_prefix_len)),
ipnetaddr.broadcast, veth_host))
sudo("ip netns exec %s ip link set dev %s up",
(netns, veth_host))
sudo("ip netns exec %s route add default gw %s dev %s",
(netns, gw, veth_host))
sudo("ip link set dev %s up", (veth_vrouter,))
# make a namespace-specific resolv.conf
resolv_conf = "/etc/netns/%s/resolv.conf" % netns
resolv_conf_body = "nameserver %s\n" % dns
sudo("mkdir -p %s", (os.path.dirname(resolv_conf),))
sudo("tee %s", (resolv_conf,), process_input=resolv_conf_body)
# finally, create the Contrail port
port = instance_service.ttypes.Port(
uuid_from_string(vmi.uuid),
uuid_from_string(vm.uuid),
veth_vrouter,
ip,
uuid_from_string(vnet.uuid),
mac,
)
rpc = vrouter_rpc()
rpc.AddPort([port])
port_created = True
return(dict(
port_id = uuid_array_to_str(port.port_id),
vm_id = vm.uuid,
net_id = vnet.uuid,
vmi_id = vmi.uuid,
veth = veth_host,
netns = netns,
ip = ip,
mac = mac,
gw = gw,
dns = dns,
netmask = str(ipnetaddr.netmask),
broadcast = str(ipnetaddr.broadcast),
))
except:
# something went wrong, clean up
if port_created:
rpc.DeletePort(port.port_id)
if veth_created:
sudo("ip link delete %s", (veth_vrouter,),
check_exit_code=False)
if netns_created:
sudo("ip netns delete %s", (netns,), check_exit_code=False)
if ip_created:
vnc_client.instance_ip_delete(id=ip_created)
if vmi_created:
vnc_client.virtual_machine_interface_delete(id=vmi.uuid)
if vnet_created:
vnc_client.virtual_network_delete(id=vnet.uuid)
if vm_created:
vnc_client.virtual_machine_delete(id=vm.uuid)
raise
print 'Execute>> Delete port %s' % vm_interface.uuid
rpc = vrouter_rpc()
rpc.DeletePort(uuid_from_string(vm_interface.uuid))
print 'Execute>> Add port %s' % vm_interface.uuid
port = ttypes.Port(
uuid_from_string(vm_interface.uuid),
uuid_from_string(vm_instance.uuid),
peth,
ip,
uuid_from_string(vnet.uuid),
mac,
)
rpc.AddPort([port])
print(
dict(
port_id=uuid_array_to_str(port.port_id),
vm_id=vm_instance.uuid,
net_id=vnet.uuid,
vmi_id=vm_interface.uuid,
veth=peth,
netns=ns_name,
ip=ip,
mac=mac,
gw=gw,
dns=dns,
netmask=subnet.subnet.ip_prefix_len,
broadcast=subnet.subnet.ip_prefix,
))
print 'Execute>> Delete port %s' %vm_interface.uuid
rpc = vrouter_rpc()
rpc.DeletePort(uuid_from_string(vm_interface.uuid))
print 'Execute>> Add port %s' %vm_interface.uuid
port = ttypes.Port(
uuid_from_string(vm_interface.uuid),
uuid_from_string(vm_instance.uuid),
peth,
ip,
uuid_from_string(vnet.uuid),
mac,
)
rpc.AddPort([port])
print (dict(port_id = uuid_array_to_str(port.port_id),
vm_id = vm_instance.uuid,
net_id = vnet.uuid,
vmi_id = vm_interface.uuid,
veth = peth,
netns = ns_name,
ip = ip,
mac = mac,
gw = gw,
dns = dns,
netmask = subnet.subnet.ip_prefix_len,
broadcast = subnet.subnet.ip_prefix,
))
def create(self):
"""Create a vm and vmi, find or create a network, and attach
the vmi to a new veth interface
Arguments:
vm_name name of the vm to create
net_name name of the netwok to arrach to
subnet x.x.x.x/len - optional if network already exists
netns Network namespace where the veth interface is bound to. Defaults to net_name
Returns:
A dict with the following elements:
port_id uuid of port
ip
veth name of veth interface
netns Network namespace where the veth interface is bound to
"""
# remember what to clean up if things go wrong
port_created = False
veth_created = False
netns_created = False
ip_created = False
vmi_created = False
vnet_created = False
vm_created = False
try:
# sanity check
net_name = self.args.get('net_name')
if not net_name:
raise ValueError("Network name argument is required")
# sanitize netns since it gets passed to the shell
netns = self.args.get('netns')
if not netns:
netns = net_name
if not re.match(r'^[-.\w]+$', netns):
raise ValueError("netns=[%s] must be a valid namespace name"
+ " (a single word)" % netns)
vnc_client = self.vnc_connect()
proj_fq_name = self.args['project'].split(':')
# find or create the VM
vm_fq_name = proj_fq_name + [ self.args['vm_name'] ]
# debug
#import pdb; pdb.set_trace()
try:
vm = vnc_client.virtual_machine_read(fq_name = vm_fq_name)
if vm:
raise ValueError(("Virtual machine named %s already exists."
+ " Use --delete to delete it")
% self.args['vm_name'])
except vnc_api.NoIdError:
# create vm if necessary
vm = vnc_api.VirtualMachine(':'.join(vm_fq_name),
fq_name=vm_fq_name)
vnc_client.virtual_machine_create(vm)
vm = vnc_client.virtual_machine_read(fq_name = vm_fq_name)
vm_created = True
# find or create the network
vnet_fq_name = proj_fq_name + [ net_name ]
vnet_created = False
try:
vnet = vnc_client.virtual_network_read(fq_name = vnet_fq_name)
except vnc_api.NoIdError:
# create the network if it doesn't exist
vnet = vnc_api.VirtualNetwork(vnet_fq_name[-1],
parent_type = 'project',
fq_name = vnet_fq_name)
# add a subnet
ipam = vnc_client.network_ipam_read(
fq_name = ['default-domain',
'default-project',
'default-network-ipam'])
(prefix, plen) = self.args['subnet'].split('/')
subnet = vnc_api.IpamSubnetType(
subnet = vnc_api.SubnetType(prefix, int(plen)))
vnet.add_network_ipam(ipam, vnc_api.VnSubnetsType([subnet]))
vnc_client.virtual_network_create(vnet)
vnet_created = True
# find or create the vmi
vmi_fq_name = vm.fq_name + ['0']
vmi_created = False
try:
vmi = vnc_client.virtual_machine_interface_read(
fq_name = vmi_fq_name)
except vnc_api.NoIdError:
vmi = vnc_api.VirtualMachineInterface(
parent_type = 'virtual-machine',
fq_name = vmi_fq_name)
vmi_created = True
vmi.set_virtual_network(vnet)
if vmi_created:
vnc_client.virtual_machine_interface_create(vmi)
else:
vnc_client.virtual_machine_interface_update(vmi)
# re-read the vmi to get its mac addresses
vmi = vnc_client.virtual_machine_interface_read(
fq_name = vmi_fq_name)
# create an IP for the VMI if it doesn't already have one
ips = vmi.get_instance_ip_back_refs()
if not ips:
ip = vnc_api.InstanceIp(vm.name + '.0')
ip.set_virtual_machine_interface(vmi)
ip.set_virtual_network(vnet)
ip_created = vnc_client.instance_ip_create(ip)
# Create the veth port. Create a veth pair. Put one end
# in the VMI port and the other in a network namespace
# get the ip, mac, and gateway from the vmi
ip_uuid = vmi.get_instance_ip_back_refs()[0]['uuid']
ip = vnc_client.instance_ip_read(id=ip_uuid).instance_ip_address
mac = vmi.virtual_machine_interface_mac_addresses.mac_address[0]
subnet = vnet.network_ipam_refs[0]['attr'].ipam_subnets[0]
gw = subnet.default_gateway
dns = gw # KLUDGE - that's the default, but some networks
# have other DNS configurations
ipnetaddr = netaddr.IPNetwork("%s/%s" %
(subnet.subnet.ip_prefix,
subnet.subnet.ip_prefix_len))
# set up the veth pair with one part for vrouter and one
# for the netns
# find a name that's not already used in the default or
# netns namespaces
link_exists = link_exists_func('', netns)
veth_vrouter = new_interface_name(suffix=vnet.uuid, prefix="ve1",
exists_func=link_exists)
veth_host = new_interface_name(suffix=vnet.uuid, prefix="ve0",
exists_func=link_exists)
sudo("ip link add %s type veth peer name %s",
(veth_vrouter, veth_host))
veth_created = True
try:
sudo("ip netns add %s", (netns,))
netns_created = True
except ProcessExecutionError:
pass
sudo("ip link set %s netns %s",
(veth_host, netns))
sudo("ip netns exec %s ip link set dev %s address %s",
(netns, veth_host, mac))
sudo("ip netns exec %s ip address add %s broadcast %s dev %s",
(netns,
("%s/%s" % (ip, subnet.subnet.ip_prefix_len)),
ipnetaddr.broadcast, veth_host))
sudo("ip netns exec %s ip link set dev %s up",
(netns, veth_host))
sudo("ip netns exec %s route add default gw %s dev %s",
(netns, gw, veth_host))
sudo("ip link set dev %s up", (veth_vrouter,))
# make a namespace-specific resolv.conf
resolv_conf = "/etc/netns/%s/resolv.conf" % netns
resolv_conf_body = "nameserver %s\n" % dns
sudo("mkdir -p %s", (os.path.dirname(resolv_conf),))
sudo("tee %s", (resolv_conf,), process_input=resolv_conf_body)
# finally, create the Contrail port
port = instance_service.ttypes.Port(
uuid_from_string(vmi.uuid),
uuid_from_string(vm.uuid),
veth_vrouter,
ip,
uuid_from_string(vnet.uuid),
mac,
)
rpc = vrouter_rpc()
rpc.AddPort([port])
port_created = True
return(dict(
port_id = uuid_array_to_str(port.port_id),
vm_id = vm.uuid,
net_id = vnet.uuid,
vmi_id = vmi.uuid,
veth = veth_host,
netns = netns,
ip = ip,
mac = mac,
gw = gw,
dns = dns,
netmask = str(ipnetaddr.netmask),
broadcast = str(ipnetaddr.broadcast),
))
except:
# something went wrong, clean up
if port_created:
rpc.DeletePort(port.port_id)
if veth_created:
sudo("ip link delete %s", (veth_vrouter,),
check_exit_code=False)
if netns_created:
sudo("ip netns delete %s", (netns,), check_exit_code=False)
if ip_created:
vnc_client.instance_ip_delete(id=ip_created)
if vmi_created:
vnc_client.virtual_machine_interface_delete(id=vmi.uuid)
if vnet_created:
vnc_client.virtual_network_delete(id=vnet.uuid)
if vm_created:
vnc_client.virtual_machine_delete(id=vm.uuid)
raise
def create(self):
# remember what to clean up if things go wrong
port_created = False
veth_created = False
netns_created = False
ip_created = False
vmi_created = False
vnet_created = False
vm_created = False
try:
vnc_client = self.vnc_connect()
proj_fq_name = self.args['project'].split(':')
vm_fq_name = [ self.args['vm_name']]
try:
vm = vnc_client.virtual_machine_read(fq_name = vm_fq_name)
except cfgm_common.exceptions.NoIdError:
# create vm if necessary
vm = vnc_api.VirtualMachine(self.args['vm_name'],
fq_name=vm_fq_name)
vnc_client.virtual_machine_create(vm)
vm = vnc_client.virtual_machine_read(fq_name = vm_fq_name)
vm_created = True
# find the network
vnet_fq_name = proj_fq_name + [ self.args['net_name'] ]
vnet_created = False
vnet = vnc_client.virtual_network_read(fq_name = vnet_fq_name)
# find or create the vmi
vmi_fq_name = proj_fq_name+['web_proxy_vmi']
vmi_created = False
try:
vmi = vnc_client.virtual_machine_interface_read(
fq_name = vmi_fq_name)
except cfgm_common.exceptions.NoIdError:
vmi = vnc_api.VirtualMachineInterface(
parent_type = 'project',
fq_name = vmi_fq_name)
vmi_created = True
vmi.set_virtual_network(vnet)
vmi.set_virtual_machine(vm)
if vmi_created:
vnc_client.virtual_machine_interface_create(vmi)
else:
vnc_client.virtual_machine_interface_update(vmi)
# re-read the vmi to get its mac addresses
vmi = vnc_client.virtual_machine_interface_read(
fq_name = vmi_fq_name)
# create an IP for the VMI if it doesn't already have one
ips = vmi.get_instance_ip_back_refs()
if not ips:
ip = vnc_api.InstanceIp(vm.name + '.0')
ip.set_virtual_machine_interface(vmi)
ip.set_virtual_network(vnet)
ip_created = vnc_client.instance_ip_create(ip)
# Create the veth port. Create a veth pair. Put one end
# in the VMI port and the other in a network namespace
# get the ip, mac, and gateway from the vmi
ip_uuid = vmi.get_instance_ip_back_refs()[0]['uuid']
ip = vnc_client.instance_ip_read(id=ip_uuid).instance_ip_address
mac = vmi.virtual_machine_interface_mac_addresses.mac_address[0]
subnet = vnet.network_ipam_refs[0]['attr'].ipam_subnets[0]
gw = subnet.default_gateway
dns = gw # KLUDGE - that's the default, but some networks
# have other DNS configurations
ipnetaddr = netaddr.IPNetwork("%s/%s" %
(subnet.subnet.ip_prefix,
subnet.subnet.ip_prefix_len))
# set up the veth pair with one part for vrouter and one
# for the netns
# find a name that's not already used in the default or
# netns namespaces
netns=self.args['netns']
link_exists = link_exists_func('', netns)
veth_vrouter = new_interface_name(suffix=vnet.uuid, prefix="ve1",
exists_func=link_exists)
veth_host = new_interface_name(suffix=vnet.uuid, prefix="ve0",
exists_func=link_exists)
os.system("ip link add %s type veth peer name %s"%
(veth_vrouter, veth_host))
veth_created = True
if os.system("ip netns add %s"%(netns))==0:
netns_created = True
os.system("ip link set %s netns %s"%(veth_host, netns))
os.system("ip netns exec %s ip link set dev %s address %s"%(netns, veth_host, mac))
os.system("ip netns exec %s ip address add %s broadcast %s dev %s"%(netns,
("%s/%s" % (ip, subnet.subnet.ip_prefix_len)),
ipnetaddr.broadcast, veth_host))
os.system("ip netns exec %s ip link set dev %s up"%(netns, veth_host))
os.system("ip netns exec %s route add default gw %s dev %s"%(netns, gw, veth_host))
os.system("ip link set dev %s up"%(veth_vrouter))
# make a namespace-specific resolv.conf
resolv_conf = "/etc/netns/%s/resolv.conf" % netns
resolv_conf_body = "nameserver %s" % dns
os.system("mkdir -p %s"%(os.path.dirname(resolv_conf)))
os.system("echo %s > %s"%(resolv_conf_body,resolv_conf))
# finally, create the Contrail port
port = instance_service.ttypes.Port(
uuid_from_string(vmi.uuid),
uuid_from_string(vm.uuid),
veth_vrouter,
ip,
uuid_from_string(vnet.uuid),
mac,
)
rpc = vrouter_rpc()
rpc.AddPort([port])
port_created = True
return(dict(
port_id = uuid_array_to_str(port.port_id),
vm_id = vm.uuid,
net_id = vnet.uuid,
vmi_id = vmi.uuid,
veth = veth_host,
netns = netns,
ip = ip,
mac = mac,
gw = gw,
dns = dns,
netmask = str(ipnetaddr.netmask),
broadcast = str(ipnetaddr.broadcast),
))
except:
# something went wrong, clean up
if port_created:
rpc.DeletePort(port.port_id)
if veth_created:
os.system("ip link delete %s"%(veth_vrouter))
if netns_created:
os.system("ip netns delete %s"%(netns))
if ip_created:
vnc_client.instance_ip_delete(id=ip_created)
if vmi_created:
vnc_client.virtual_machine_interface_delete(id=vmi.uuid)
if vnet_created:
vnc_client.virtual_network_delete(id=vnet.uuid)
if vm_created:
vnc_client.virtual_machine_delete(id=vm.uuid)
raise
