Shulou(Shulou.com)06/03 Report--

Version information

Openstack version pike control node host openstack-controller (ubuntu 16.04.5) 172.27.34.37

Compute node host openstack-computer (ubuntu 16.04.5) 172.27.34.38

Mirror cirros-0.3.3-x86_64-disk.img host environment

Esxi 6.5.0

For details of ubuntu installation, please see the full record of Ubuntu16.04.5 installation in lvm mode.

For more information on openstack installation, please see: OpenStack practice (1): build p version of OpenStack by DevStack under Ubuntu16.04

Flat network

A flat network is a network without vlan tagging. Instance in a flat network can communicate with instance on the same network and can span multiple nodes.

Goal: interworking between cirros01 and cirros02. The network topology is as follows:

First, make a mirror image

Upload media cirros-0.3.3-x86_64-disk.img to / tmp directory, image download address: http://download.cirros-cloud.net/

Create an image:

Root@openstack-controller:~# su-stackstack@openstack-controller:~$ source devstack/openrc admin adminstack@openstack-controller:~$ glance image-create-name cirros-cli-file / tmp/cirros-0.3.3-x86_64-disk.img-disk-format qcow2-container-format bare-progress

View the newly created image:

Configure flat network in ML2

1.Neutron uses ML2 as core plugin by default, and the control node and compute node edit the configuration file / etc/neutron/plugins/ml2/ml2_conf.ini of ML2 respectively.

Tenant_network_types = flatmechanism_drivers = linuxbridgetype_drivers = local,flat,vlan,gre,vxlan,geneveflat_networks = defaultphysical_interface_mappings = default:ens192

If you want to configure two flat network, you can make the following settings

Flat_networks = default,flat02physical_interface_mappings = default:ens192,flat02:ens224

two。 Restart the neutron service

Stack@openstack-controller:~$ sudo systemctl restart devstack@q*

Third, create a flat network

Create flat-network01

Create flatnetwork01

The physical network is default, which is consistent with the parameter flat_networks in ml2_conf.ini.

The subnet is 172.16.2.0amp 24, and the address range is 172.16.2.50, 172.16.2.100.

Creation completed

4. Create instance

1. View instance types

Stack@openstack-controller:~$ nova flavor-list

M1.tiny is selected for this article.

two。 Check the hostname and zone

Stack@openstack-controller:~$ nova service-list

3. Create a new cirros01

Start cirros01, node is openstack-controller, network is flatnetwork01

Stack@openstack-controller:~$ nova boot-flavor m1.tiny-image cirros-cli-availability-zone nova:openstack-controller-nic net-name=flatnetwork01 cirros01

4. Create a new cirros02

Start cirros02, node is openstack-computer, network is flatnetwork01

Stack@openstack-controller:~$ nova boot-flavor m1.tiny-image cirros-cli-availability-zone nova:openstack-computer-nic net-name=flatnetwork01 cirros02

5. View the new instance in the console

6. View virtual network card

Control node:

Root@openstack-controller:~# brctl show

Compute nodes:

Control panel view port information

You can see that the virtual network cards contained in Linux bridge01 brq9a198413-3b are tap7d88a7f4-a7 of cirros01 and tap79e963af-dd of cirros02.

5. Testing

Log in to cirros01 and cirros02 mutual ping respectively.

1. Turn on the host network card hybrid mode

Since the test is done on the esxi virtual machine, the Nic needs to turn on promiscuous mode

Promiscuous mode is not supported by default

Edit network card information

Turn on the mixing mode

2.cirros01

The obtained ip is 172.16.2.63

Ping cirros02 is connected.

3.cirros02

The obtained ip is 172.16.2.56

Ping cirros01 is connected.

In addition, because the hybrid mode is enabled for the virtual machine Nic, when the flat network flatnetwork02 of the same network segment is created and the same network segment of flatnetwork01 is created, that is, the vm under flatnetwork01 and flatnetwork02 can be interconnected. If the subnet of flatnetwork02 is different from that of flatnetwork01, for example, 172.16.3.0 vm 24, the vm instances under the two networks are different.

The test results are in line with expectations.

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