Open Stack

Gustav,

Your configuration looks fine. The only thing I see missing is you need to
add a physical port to br-ex1. Also you'll need to create a neutron network
for each, but that's the same procedure as for a single network.

-Erik

On Wed, Feb 15, 2017 at 9:47 AM, Gaurav Goyal <er.gauravgoyal at gmail.com>
wrote:

> Dear Openstack users,
>
> Can you please help to verify my configuration.
>
>
> Regards
> Gaurav Goyal
>
>
> On Sun, Feb 12, 2017 at 8:29 PM, Gaurav Goyal <er.gauravgoyal at gmail.com>
> wrote:
>
>> Hi Dan,
>>
>> Thanks for your response!
>>
>> Can you please verify my configuration and suggest me for any change if
>> required.
>>
>> should i do following changes   in my existing configuration?
>>
>> flat_networks = *
>> bridge_mappings = external:br-ex,external1:br-ex1
>> ovs-vsctl add-br br-ex1
>> ovs-vsctl add-port br-ex *p5p3*
>>
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>> * - - /etc/neutron/plugins/ml2/ml2_conf.ini file and complete the
>> following actions:1. 12345[ml2]...type_drivers =
>> flat,vlan,gre,vxlantenant_network_types = gremechanism_drivers =
>> openvswitch2. In the [ml2_type_flat]  123[ml2_type_flat]...flat_networks =
>> external3. In the [ml2_type_gre] section,
>> 123[ml2_type_gre]...tunnel_id_ranges = 1:1000 -
>>  /etc/neutron/plugins/ml2/openvswitch_agent.ini [root at OSKVM1 ml2]# grep -v
>> ^# openvswitch_agent.ini|grep -v ^$[ovs] local_ip = 10.24.0.4
>> bridge_mappings = external:br-ex [agent] tunnel_types = gre - To configure
>> the Layer-3 (L3) agentThe Layer-3 (L3) agent
>> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>> routing services for virtual networks.-  /etc/neutron/l3_agent.ini file 1.
>> In the [DEFAULT] section,  12345[DEFAULT]...interface_driver =
>> neutron.agent.linux.interface.OVSInterfaceDriverexternal_network_bridge
>> =router_delete_namespaces = True NoteThe external_network_bridge option
>> intentionally lacks a value to enable multiple external networks on a
>> single agent.To configure the DHCP agentThe DHCP agent
>> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>> DHCP services for virtual networks. 1.  /etc/neutron/dhcp_agent.ini file1.
>> In the [DEFAULT] section,  12345[DEFAULT]...interface_driver =
>> neutron.agent.linux.interface.OVSInterfaceDriverdhcp_driver =
>> neutron.agent.linux.dhcp.Dnsmasqdhcp_delete_namespaces = True 1.
>>  /etc/neutron/dhcp_agent.ini file 1. In the [DEFAULT] section,
>> 123[DEFAULT]...dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf2.
>> Created  /etc/neutron/dnsmasq-neutron.conf file and complete the following
>> action:1. Enable the DHCP MTU option (26) and configure it to 1454 bytes:
>> 1dhcp-option-force=26,1454To configure the metadata agentThe metadata agent
>> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>> configuration information such as credentials to instances. 1.
>>  /etc/neutron/metadata_agent.ini file 1. In the [DEFAULT] section,
>> 1234567891011[DEFAULT]...auth_uri = http://controller:5000auth_url =
>> http://controller:35357auth_region = RegionOneauth_plugin =
>> passwordproject_domain_id = defaultuser_domain_id = defaultproject_name =
>> serviceusername = neutronpassword = NEUTRON_PASS In the [DEFAULT] section,
>> configure the metadata host: 2. 123[DEFAULT]...nova_metadata_ip
>> = controller3. 4. In the [DEFAULT] section, configure the metadata proxy
>> shared secret: 123[DEFAULT]...metadata_proxy_shared_secret
>> = METADATA_SECRET 1. Add the external bridge:2. # ovs-vsctl add-br br-ex3.
>> Add a port to the external bridge that connects to the physical external
>> network interface:Replace INTERFACE_NAME with the actual interface name.
>> For example, eth2 or ens256.# ovs-vsctl add-port br-ex p5p2RegardsGaurav
>> Goyal*
>>
>>
>>
>>
>> On Fri, Feb 10, 2017 at 11:39 AM, Gaurav Goyal <er.gauravgoyal at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I need your help to configure multiple external networks in openstack
>>> environment.
>>>
>>> I am using Liberty openstack.  openvswitch with gre tunneling.
>>> I want to create multiple external networks so that all interfaces of my
>>> VM can be accessible to outside world.
>>> I need your help to config neutron for multiple external networks.
>>>
>>> should i do following changes   in my existing configuration?
>>>
>>> flat_networks = *
>>> bridge_mappings = external:br-ex,external1:br-ex1
>>> ovs-vsctl add-br br-ex1
>>> ovs-vsctl add-port br-ex *p5p3*
>>>
>>> is it going to impact all existing VMs running in openstack environment?
>>>
>>>    -
>>>       -
>>>
>>>       Edit the /etc/neutron/plugins/ml2/ml2_conf.ini file and complete
>>>       the following actions:
>>>       1.
>>>
>>>
>>>
>>>          1
>>>          2
>>>          3
>>>          4
>>>          5
>>>          [ml2]
>>>          ...
>>>          type_drivers = flat,vlan,gre,vxlan
>>>          tenant_network_types = gre
>>>          mechanism_drivers = openvswitch
>>>          2.
>>>
>>>          In the [ml2_type_flat]
>>>
>>>
>>>          1
>>>          2
>>>          3
>>>          [ml2_type_flat]
>>>          ...
>>>          flat_networks = external
>>>          3.
>>>
>>>          In the [ml2_type_gre] section,
>>>
>>>
>>>          1
>>>          2
>>>          3
>>>          [ml2_type_gre]
>>>          ...
>>>          tunnel_id_ranges = 1:1000
>>>
>>>          -  /etc/neutron/plugins/ml2/openvswitch_agent.ini
>>>
>>>       [root at OSKVM1 ml2]# grep -v ^# openvswitch_agent.ini|grep -v ^$
>>>
>>>       [ovs]
>>>       local_ip = 10.24.0.4
>>>       bridge_mappings = external:br-ex
>>>       [agent]
>>>       tunnel_types = gre
>>>
>>>
>>>    -
>>>
>>>    *To configure the Layer-3 (L3) agent*
>>>
>>>    The Layer-3 (L3) agent
>>>    <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>>>    routing services for virtual networks.
>>>    -
>>>
>>>        /etc/neutron/l3_agent.ini file
>>>       1.
>>>
>>>          In the [DEFAULT] section,
>>>
>>>
>>>          1
>>>          2
>>>          3
>>>          4
>>>          5
>>>          [DEFAULT]
>>>          ...
>>>          interface_driver = neutron.agent.linux.interface.
>>>          OVSInterfaceDriver
>>>          external_network_bridge =
>>>          router_delete_namespaces = True
>>>
>>>
>>>
>>>          Note
>>>
>>>          The external_network_bridge option intentionally lacks a value
>>>          to enable multiple external networks on a single agent.
>>>
>>> *To configure the DHCP agent*
>>>
>>> The DHCP agent
>>> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>>> DHCP services for virtual networks.
>>>
>>>    1.
>>>
>>>     /etc/neutron/dhcp_agent.ini file
>>>    1.
>>>
>>>       In the [DEFAULT] section,
>>>
>>>
>>>       1
>>>       2
>>>       3
>>>       4
>>>       5
>>>       [DEFAULT]
>>>       ...
>>>       interface_driver = neutron.agent.linux.interface.
>>>       OVSInterfaceDriver
>>>       dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
>>>       dhcp_delete_namespaces = True
>>>
>>>
>>>    1.
>>>
>>>     /etc/neutron/dhcp_agent.ini file
>>>    1.
>>>
>>>       In the [DEFAULT] section,
>>>
>>>
>>>       1
>>>       2
>>>       3
>>>       [DEFAULT]
>>>       ...
>>>       dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf
>>>       2.
>>>
>>>    Created  /etc/neutron/dnsmasq-neutron.conf file and complete the
>>>    following action:
>>>    1.
>>>
>>>       Enable the DHCP MTU option (26) and configure it to 1454 bytes:
>>>
>>>
>>>       1
>>>       dhcp-option-force=26,1454
>>>
>>> *To configure the metadata agent*
>>>
>>> The metadata agent
>>> <http://docs.openstack.org/kilo/install-guide/install/yum/content/neutron-network-node.html> provides
>>> configuration information such as credentials to instances.
>>>
>>>    1.
>>>
>>>     /etc/neutron/metadata_agent.ini file
>>>    1.
>>>
>>>       In the [DEFAULT] section,
>>>
>>>
>>>       1
>>>       2
>>>       3
>>>       4
>>>       5
>>>       6
>>>       7
>>>       8
>>>       9
>>>       10
>>>       11
>>>       [DEFAULT]
>>>       ...
>>>       auth_uri = http://controller:5000
>>>       auth_url = http://controller:35357
>>>       auth_region = RegionOne
>>>       auth_plugin = password
>>>       project_domain_id = default
>>>       user_domain_id = default
>>>       project_name = service
>>>       username = neutron
>>>       password = NEUTRON_PASS
>>>
>>>
>>>       In the [DEFAULT] section, configure the metadata host:
>>>       2.
>>>
>>>
>>>       1
>>>       2
>>>       3
>>>       [DEFAULT]
>>>       ...
>>>       nova_metadata_ip = controller
>>>       3.
>>>
>>>
>>>       4.
>>>
>>>       In the [DEFAULT] section, configure the metadata proxy shared
>>>       secret:
>>>
>>>
>>>       1
>>>       2
>>>       3
>>>       [DEFAULT]
>>>       ...
>>>       metadata_proxy_shared_secret = METADATA_SECRET
>>>
>>>
>>>
>>>
>>>
>>>    1.
>>>
>>>    Add the external bridge:
>>>    2.
>>>
>>>    # ovs-vsctl add-br br-ex
>>>    3.
>>>
>>>    Add a port to the external bridge that connects to the physical
>>>    external network interface:
>>>
>>>    Replace *INTERFACE_NAME* with the actual interface name. For
>>>    example, *eth2* or *ens256*.
>>>
>>>    # ovs-vsctl add-port br-ex *p5p2*
>>>
>>>
>>>
>>> *Regards*
>>> *Gaurav Goyal*
>>>
>>>
>>>
>>
>
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