Ubuntu 14.04
Sponsored Link

OpenStack Icehouse : Neutron Networking#2
2014/05/23
 
Configure virtual networking by OpenStack Network Service (Neutron).
For example, configure simply flat networking.
Before it, Configure basic settings on Control Node, Network Node, Compute Node.
Furthermore, this example is based on the environment that Network Node has 3 network interfaces and alsp Compute Node has 2 network interfaces.

                                        |
  +-------------+                  +----+----+
  | Name Server |                  | Gateway |
  +------+------+                  +----+----+
         |10.0.0.10                     |10.0.0.1
         |                              |
         +------------+-----------------+------------------------+
         |            |                 |                        |
         |            |                 |              10.0.0.200-10.0.0.254
     eth0|10.0.0.30   |        10.0.0.50| eth0          +--------+-------+
+--------+---------+  |     +-----------+----------+    | Virtual Router |
| [ Control Node ] |  |     |   [ Network Node ]   |    +--------+-------+
|     Keystone     |  |     |       DHCP Agent     |       192.168.100.1
|      Glance      |  | eth2|       L3 Agent       |eth1         |            192.168.100.0/24
|     Nova API     |  |     |       L2 Agent       |             |           +-----------------+
|  Neutron Server  |  |     |    Metadata Agent    |             |       +---| Virtual Machine |
+------------------+  |     +----------------------+             |       |   +-----------------+
                      |                                          |       |   +-----------------+
                      |     +----------------------+             +-------+---| Virtual Machine |
                      | eth0|   [ Compute Node ]   |eth1                 |   +-----------------+
                      +-----|     Nova Compute     |                     |   +-----------------+
                   10.0.0.51|       L2 Agent       |                     |---| Virtual Machine |
                            +----------------------+                     |   +-----------------+
                                                                         |   +-----------------+
                                                                         +---| Virtual Machine |
                                                                             +-----------------+
[1] Change settings like follows on Control Node.
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 36: add

[ml2_type_vlan]
network_vlan_ranges = physnet1:1000:2999
# add at the last line

[ovs]
tenant_network_type = vlan
bridge_mappings = physnet1:br-eth1
root@dlp ~(keystone)#
service neutron-server restart

neutron-server stop/waiting
neutron-server start/running, process 4044
[2] Change settings like follows on both Network Node and Compute Node.
root@network:~#
ovs-vsctl add-br br-eth1
# add a bridge

root@network:~#
ovs-vsctl add-port br-eth1 eth1
# add eth1 to the port of the bridge above

root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 36: add

[ml2_type_vlan]
network_vlan_ranges = physnet1:1000:2999
# add at the last line

[ovs]
tenant_network_type = vlan
bridge_mappings = physnet1:br-eth1
root@network:~#
service neutron-plugin-openvswitch-agent restart

neutron-plugin-openvswitch-agent stop/waiting
neutron-plugin-openvswitch-agent start/running, process 1993
[3] Create and define a bridge for external network on Network Node.
root@network:~#
ovs-vsctl add-br br-ext

root@network:~#
ovs-vsctl add-port br-ext eth2

root@network:~#
vi /etc/neutron/l3_agent.ini
# line 47: add

external_network_bridge =
br-ext
root@network:~#
service neutron-l3-agent restart

neutron-l3-agent stop/waiting
neutron-l3-agent start/running, process 2227
[4] Create a Virtual router. It's OK to work on any node. (This example is on Control Node)
# create a virtual router

root@dlp ~(keystone)#
neutron router-create router01

Created a new router:
+-----------------------+--------------------------------------+
| Field                 | Value                                |
+-----------------------+--------------------------------------+
| admin_state_up        | True                                 |
| external_gateway_info |                                      |
| id                    | cbbdfe73-9bab-4c57-b5db-effd35a8d8a6 |
| name                  | router01                             |
| status                | ACTIVE                               |
| tenant_id             | 0bf06fa0415043cb924ead3db08e2518     |
+-----------------------+--------------------------------------+

root@dlp ~(keystone)#
Router_ID=`neutron router-list | grep router01 | awk '{ print $2 }'`

[5] Create internal network and associate with the router above.
# create internal network

root@dlp ~(keystone)#
neutron net-create int_net

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | efbaf2fc-cb84-4bfe-bc6a-48514748986f |
| name                      | int_net                              |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1000                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------------+--------------------------------------+

# create subnet in the internal network

root@dlp ~(keystone)#
neutron subnet-create \
--gateway 192.168.100.1 --dns-nameserver 10.0.0.10 int_net 192.168.100.0/24

Created a new subnet:
+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| allocation_pools | {"start": "192.168.100.2", "end": "192.168.100.254"} |
| cidr             | 192.168.100.0/24                                     |
| dns_nameservers  | 10.0.0.10                                            |
| enable_dhcp      | True                                                 |
| gateway_ip       | 192.168.100.1                                        |
| host_routes      |                                                      |
| id               | d7da5b07-f780-45a8-a706-ed10a2cd1513                 |
| ip_version       | 4                                                    |
| name             |                                                      |
| network_id       | efbaf2fc-cb84-4bfe-bc6a-48514748986f                 |
| tenant_id        | 0bf06fa0415043cb924ead3db08e2518                     |
+------------------+------------------------------------------------------+

root@dlp ~(keystone)#
Int_Subnet_ID=`neutron net-list | grep int_net | awk '{ print $6 }'`
# set internal network to the router above

root@dlp ~(keystone)#
neutron router-interface-add $Router_ID $Int_Subnet_ID

Added interface f04f2566-6767-4506-8926-8a435b80d588 to router f4f52ce0-d9a0-441e-9a21-24a3d7966654.
[6] Create external network and associate with the router above.
# create external network

root@dlp ~(keystone)#
neutron net-create ext_net --router:external=True

Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| id                        | 07811ebd-e62d-43a8-866c-1f84d37276c5 |
| name                      | ext_net                              |
| provider:network_type     | vlan                                 |
| provider:physical_network | physnet1                             |
| provider:segmentation_id  | 1001                                 |
| router:external           | True                                 |
| shared                    | False                                |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tenant_id                 | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------------+--------------------------------------+

# create subnet in external network

root@dlp ~(keystone)#
neutron subnet-create ext_net \
--allocation-pool start=10.0.0.200,end=10.0.0.254 \
--gateway 10.0.0.1 --dns-nameserver 10.0.0.10 10.0.0.0/24 --disable-dhcp

Created a new subnet:
+------------------+----------------------------------------------+
| Field            | Value                                        |
+------------------+----------------------------------------------+
| allocation_pools | {"start": "10.0.0.200", "end": "10.0.0.254"} |
| cidr             | 10.0.0.0/24                                  |
| dns_nameservers  | 10.0.0.10                                    |
| enable_dhcp      | False                                        |
| gateway_ip       | 10.0.0.1                                     |
| host_routes      |                                              |
| id               | e1fe23f4-44d7-4f5b-b051-b4f8e0785101         |
| ip_version       | 4                                            |
| name             |                                              |
| network_id       | 07811ebd-e62d-43a8-866c-1f84d37276c5         |
| tenant_id        | 0bf06fa0415043cb924ead3db08e2518             |
+------------------+----------------------------------------------+

root@dlp ~(keystone)#
Ext_Net_ID=`neutron net-list | grep ext_net | awk '{ print $2 }'`

# set gateway to the router above

root@dlp ~(keystone)#
neutron router-gateway-set $Router_ID $Ext_Net_ID

Set gateway for router f4f52ce0-d9a0-441e-9a21-24a3d7966654
[7] Create and start Virtual machine Instance.
root@dlp ~(keystone)#
Int_Net_ID=`neutron net-list | grep int_net | awk '{ print $2 }'`

root@dlp ~(keystone)#
nova image-list

+--------------------------------------+-------------+--------+--------+
| ID                                   | Name        | Status | Server |
+--------------------------------------+-------------+--------+--------+
| 98c7ba58-512f-4750-a0ff-3b892753f096 | Ubuntu14.04 | ACTIVE |        |
+--------------------------------------+-------------+--------+--------+

root@dlp ~(keystone)#
nova boot --flavor 2 --image Ubuntu14.04 --security_group default --nic net-id=$Int_Net_ID Ubuntu_Trusty

root@dlp ~(keystone)#
nova list

+-----------+---------------+--------+------------+-------------+-----------------------+
| ID        | Name          | Status | Task State | Power State | Networks              |
+-----------+---------------+--------+------------+-------------+-----------------------+
| ff1046c2- | Ubuntu_Trusty | ACTIVE | -          | Running     | int_net=192.168.100.2 |
+-----------+---------------+--------+------------+-------------+-----------------------+
[8] Assign floating IP address to the Instance above.
root@dlp ~(keystone)#
neutron floatingip-create ext_net

Created a new floatingip:
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    |                                      |
| floating_ip_address | 10.0.0.201                           |
| floating_network_id | 07811ebd-e62d-43a8-866c-1f84d37276c5 |
| id                  | 1c7385f2-e285-4db8-b0a1-39ed7565dfc2 |
| port_id             |                                      |
| router_id           |                                      |
| status              | DOWN                                 |
| tenant_id           | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
Device_ID=`nova list | grep Ubuntu_Trusty | awk '{ print $2 }'`

root@dlp ~(keystone)#
Port_ID=`neutron port-list -- --device_id $Device_ID | grep 192.168.100.2 | awk '{ print $2 }'`

root@dlp ~(keystone)#
Floating_ID=`neutron floatingip-list | grep 10.0.0.201 | awk '{ print $2 }'`

root@dlp ~(keystone)#
neutron floatingip-associate $Floating_ID $Port_ID

Associated floatingip 1c7385f2-e285-4db8-b0a1-39ed7565dfc2
# confirm settings

root@dlp ~(keystone)#
neutron floatingip-show $Floating_ID

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| fixed_ip_address    | 192.168.100.2                        |
| floating_ip_address | 10.0.0.201                           |
| floating_network_id | 07811ebd-e62d-43a8-866c-1f84d37276c5 |
| id                  | 1c7385f2-e285-4db8-b0a1-39ed7565dfc2 |
| port_id             | 867b7476-3cc2-434a-8ba5-a6c448aa8d3f |
| router_id           | f4f52ce0-d9a0-441e-9a21-24a3d7966654 |
| status              | ACTIVE                               |
| tenant_id           | 0bf06fa0415043cb924ead3db08e2518     |
+---------------------+--------------------------------------+
[9] Configure security settings like follows to access with SSH and ICMP.
# permit SSH

root@dlp ~(keystone)#
nova secgroup-add-rule default tcp 22 22 0.0.0.0/0

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| tcp         | 22        | 22      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+

# permit ICMP

root@dlp ~(keystone)#
nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| icmp        | -1        | -1      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+

root@dlp ~(keystone)#
nova secgroup-list-rules default

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| tcp         | 22        | 22      | 0.0.0.0/0 |              |
| icmp        | -1        | -1      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+
[10] It's possible to login to the Instance to connect to the IP address with SSH like follows.
root@dlp ~(keystone)#
ssh trusty@10.0.0.201

The authenticity of host '10.0.0.200 (10.0.0.200)' can't be established.
ECDSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:af:3d:00.
Are you sure you want to continue connecting (yes/no)?
yes

Warning: Permanently added '10.0.0.200' (ECDSA) to the list of known hosts.
trusty@10.0.0.200's password:
Welcome to Ubuntu 14.04 LTS (GNU/Linux 3.13.0-24-generic x86_64)
* Documentation: https://help.ubuntu.com/
Last login: Thu May 15 21:11:26 2014
trusty@host-192-168-100-2:~$
# just logined
Matched Content
 
Tweet