OpenStack Icehouse : Neutron Networking#1(Flat)2014/06/25 |
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Configure virtual networking by OpenStack Network Service (Neutron).
For example, configure simply flat networking.
Furthermore, this example is based on the environment that Network Node and Compute Node have 2 network interfaces.
Before it, Configure basic settings on Control Node, Network Node. Compute Node.
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+-------------+ +----+----+
| Name Server | | Gateway |
+------+------+ +----+----+
|10.0.0.10 |10.0.0.1
| |
+------------+-----------------+------------------+
| | | | 10.0.0.200-10.0.0.250
eth0|10.0.0.30 | eth0|10.0.0.50 | +-----------------+
+--------+---------+ | +-----------+----------+ | +---| Virtual Machine |
| [ Control Node ] | | | [ Network Node ] | | | +-----------------+
| Keystone | | | DHCP Agent | | | +-----------------+
| Glance | | | L3 Agent |eth1 | |---| Virtual Machine |
| Nova API | | | L2 Agent | | | +-----------------+
| Neutron Server | | | Metadata Agent | | | +-----------------+
+------------------+ | +----------------------+ +-----+---| Virtual Machine |
| | +-----------------+
| +----------------------+ | +-----------------+
| eth0| [ Compute Node ] | |---| Virtual Machine |
+-----| Nova Compute |eth1 | +-----------------+
10.0.0.51| L2 Agent | | +-----------------+
+----------------------+ +---| Virtual Machine |
+-----------------+
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| [1] | Change settings like follows on both Network Node and Compute Node. |
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[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 # add at the last line
[ovs]
flat_networks = physnet1 bridge_mappings = physnet1:br-eth1 /etc/rc.d/init.d/neutron-openvswitch-agent restart Stopping neutron-openvswitch-agent: [ OK ] Starting neutron-openvswitch-agent: [ OK ] |
| [2] | Create network. It's OK to work on any node. (This example is on Control Node) |
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[root@dlp ~(keystone)]#
tenantID=`keystone tenant-list | grep service | awk '{print $2}'` # create network named "sharednet1" [root@dlp ~(keystone)]# neutron net-create --tenant-id $tenantID sharednet1 \ --shared --provider:network_type flat --provider:physical_network physnet1 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | 8291f377-18b4-4315-a397-6fdc358680d9 | | name | sharednet1 | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | | | shared | True | | status | ACTIVE | | subnets | | | tenant_id | fc294b687db2410189f7c8bd81efe426 | +---------------------------+--------------------------------------+ # create subnet "10.0.0.0/24" in "sharednet1" [root@dlp ~(keystone)]# neutron subnet-create \ --tenant-id $tenantID --gateway 10.0.0.1 --dns-nameserver 10.0.0.1 \ --allocation-pool start=10.0.0.200,end=10.0.0.250 sharednet1 10.0.0.0/24 Created a new subnet:
+------------------+----------------------------------------------+
| Field | Value |
+------------------+----------------------------------------------+
| allocation_pools | {"start": "10.0.0.200", "end": "10.0.0.250"} |
| cidr | 10.0.0.0/24 |
| dns_nameservers | 10.0.0.1 |
| enable_dhcp | True |
| gateway_ip | 10.0.0.1 |
| host_routes | |
| id | 7940c0df-c16f-4c47-853b-045682ce2b39 |
| ip_version | 4 |
| name | |
| network_id | 8291f377-18b4-4315-a397-6fdc358680d9 |
| tenant_id | fc294b687db2410189f7c8bd81efe426 |
+------------------+----------------------------------------------+
# confirm settings [root@dlp ~(keystone)]# neutron net-list +--------------------------------------+------------+--------------------------------------------------+ | id | name | subnets | +--------------------------------------+------------+--------------------------------------------------+ | 8291f377-18b4-4315-a397-6fdc358680d9 | sharednet1 | 7940c0df-c16f-4c47-853b-045682ce2b39 10.0.0.0/24 | +--------------------------------------+------------+--------------------------------------------------+ |
| [3] | Create and start a Virtual machine Instance with the network just created above. |
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[root@dlp ~(keystone)]# netID=`neutron net-list | grep sharednet1 | awk '{print $2}'` [root@dlp ~(keystone)]# nova image-list +--------------------------------------+---------+--------+--------+ | ID | Name | Status | Server | +--------------------------------------+---------+--------+--------+ | 04ea6c45-c928-4df9-bb12-d3728a3d9a74 | CentOS6 | ACTIVE | | +--------------------------------------+---------+--------+--------+
[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# nova boot --flavor 2 --image CentOS6 --security_group default --nic net-id=$netID CentOS_65
nova list +-----------+-----------+--------+------------+-------------+--------------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+-----------+--------+------------+-------------+--------------------------+ | bbfe0a8e- | CentOS_65 | ACTIVE | - | Running | sharednet1=10.0.0.200 | +-----------+-----------+--------+------------+-------------+--------------------------+ |
| [4] | Configure security settings like follows to access with SSH and ICMP. |
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# 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 | | +-------------+-----------+---------+-----------+--------------+ |
| [5] | Login to the Instance. |
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[root@dlp ~(keystone)]# ssh 10.0.0.200 The authenticity of host '10.0.0.200 (10.0.0.200)' can't be established. RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:76:84:a6. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.0.0.200' (RSA) to the list of known hosts. root@192.168.100.3's password: Last login: Thu Jun 26 01:50:50 2014 [root@host-10.0.0.200 ~]# # just logined |
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