[kolla-ansible][octavia] need networking help

W Ch wchy1001 at gmail.com
Wed Aug 17 02:03:40 UTC 2022


HI:
sorry,  i forget a point in last reply.  octavia-worker node  also needs to
access the vm in lb-mgmt-subnet.  for above example.  please try to ping
10.1.2.1(gateway) in octavia-worker nodes.
thanks.

W Ch <wchy1001 at gmail.com> 于2022年8月17日周三 09:49写道:

> Hi:
>
> what i mean of  'external switch' is your physical switch.
> from you description, you just need to configure octavia_amp_network in
> global.yml. the following is example:
>
> please ensure you have set  enable_neutron_provider_networks = True before
> running octavia.
>
> octavia_amp_network:  name: lb-mgmt-net  provider_network_type: vlan  provider_segmentation_id: 1000   //vlan id, ensure your physical switch port which connected to 'neutron_external_interface' allows this vlan_id pass (trunk, allow 1000)
>
>   provider_physical_network: physnet1  //default is physnet1, you can check this in '/etc/kolla/neutron-openvswitch-agent/openvswitch_agent.ini'  external: false  shared: false  subnet:    name: lb-mgmt-subnet    cidr: "10.1.2.0/24"  //this should be the network cidr of vlan 1000.     allocation_pool_start: "10.1.2.100"    allocation_pool_end: "10.1.2.200"    gateway_ip: "10.1.2.1" //this is the gateway for vlan_1000 , most time, this is the vlan 1000 interface ip address in your physical switch.    enable_dhcp: yes
>
>
> anyway, the goal is that a vm with octavia_amp_network network is able to
> access your octavia_network_interface.
>
> thanks
>
>
> Stuart Whitman <swhitman at groupw.com> 于2022年8月17日周三 00:50写道:
>
>> Hello,
>>
>> I prefer for kolla to create the bridge automatically.  Each node has two
>> physical interfaces. The network_interface and neutron_external_interface
>> options are set in the inventory file.
>>
>> > you need set octavia_network_interface and configure external switch
>> properly
>>
>> I have octavia_network_interface set to "{{ api_interface }}" and
>> api_interface
>> is set to "{{ network_interface }}", the defaults.
>>
>> What do you mean by "configure external switch properly"? If you mean the
>> external option when creating OpenStack networks, then I used the defaults
>> in globals.yml which does not include that option. If you mean the
>> physical
>> switch, I'm using a low-budget switch I had lying around that is not
>> configurable.
>>
>> Thanks for the help - everything else with kolla-ansible has been fairly
>> easy.
>>
>> -Stu
>>
>> ----
>>
>> From: W Ch <wchy1001 at gmail.com>
>> Sent: Tuesday, August 16, 2022 5:32 AM
>> To: Stuart Whitman <swhitman at groupw.com>
>> Cc: openstack-discuss at lists.openstack.org <
>> openstack-discuss at lists.openstack.org>
>> Subject: Re: [kolla-ansible][octavia] need networking help
>>
>> Hi Stuart:
>>
>> Usually, you need to add a bridge to all network nodes,  you can use
>> "ovs-vsctl add-br  {br-name}" to add a ovs bridge, then you need to add a
>> physical port  to that bridge by executing "ovs-vsctl  add-port {bridge}
>> {port}".
>> another alternatives, you can append the physical port to
>> neutron_external_interface variable in globals.yml.  in this case, kolla
>> will create the ovs bridge automatically.
>> both of them, you need set octavia_network_interface and configure
>> external switch properly.
>>
>> if you really don't know how this works, I propose you  use
>>  "octavia_network_type: tenant"  ref: [0] , in this case, kolla-ansible
>> will setup the octavia management network for you, you don't need to do
>> anything.
>>
>> [0]:
>> https://docs.openstack.org/kolla-ansible/latest/reference/networking/octavia.html#development-or-testing
>>
>> thanks.
>>
>>
>> Stuart Whitman <swhitman at groupw.com> 于2022年8月16日周二 06:28写道:
>> Hello,
>>
>> I enabled Octavia on a kolla-ansible installed Openstack
>> cluster. When I try to launch a loadbalancer instance, the
>> octavia-worker.log file reports:
>> "WARNING octavia.amphorae.drivers.haproxy.rest_api_driver [-]
>> Could not connect to instance."
>>
>> I researched enough to know that the problem has to do with networking
>> between the controller and the lb-mgmt-net network. I initially
>> overlooked this in the kolla-ansible Octavia documentation:
>> "If using a VLAN provider network, ensure that the traffic is also bridged
>> to Open vSwitch on the controllers." But, I don't know how to do it.
>>
>> Help to create the necessary bridge would be greatly appreciated.
>>
>> Thanks,
>> -Stu
>>
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