[Rdo-list] [RDO] deployment details about neutron

[Ihar Hrachyshka]

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If you want any kind of network connectivity for your instances, you
will need to have L2 agent deployed. For more info see [1] where L2
agent is referred to as 'Plug-in Agent'.

[1]:
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/3/html/Installation_and_Configuration_Guide/chap-Installing_the_OpenStack_Networking_Service.html#OpenStack_Networking_Agents

On 19/06/14 08:15, Kun Huang wrote:
> Thanks Ihar
> 
> It is understandable to split neutron (API) server and L2 agent.
> But is it necessary to deploy nova-compute and L2 agent on same
> node? That reference doesn't explain the reason.
> 
> On Tue, Jun 17, 2014 at 6:11 PM, Ihar Hrachyshka
> <ihrachys at redhat.com> wrote: Quoting [1], "L2 agent should run on
> all machines except for the Neutron service machine (unless Neutron
> service resides with other component in the same machine)." That's
> what you observe.
> 
> [1]: http://openstack.redhat.com/Neutron_with_OVS_and_VLANs
> 
> On 17/06/14 10:23, Kun Huang wrote:
>>>> I deployed a new cluster with above variables and l3 agent
>>>> and dhcp agent exists on expected nodes. But ovs agent is
>>>> running on each node. So the CONFIG_NEUTRON_OVS_HOST doesn't
>>>> work.
>>>> 
>>>> On Tue, Jun 17, 2014 at 2:40 PM, Kun Huang
>>>> <gareth at openstacker.org> wrote:
>>>>> hi all
>>>>> 
>>>>> I have some questions about using RDO deploy neutron (based
>>>>> on ovs). I need:
>>>>> 
>>>>> node1: - neutron server
>>>>> 
>>>>> node2 (all others): - dhcp agent - ovs agent - l3 agent
>>>>> 
>>>>> Now in my understanding, CONFIG_NEUTRON_SERVER_HOST
>>>>> manages neutron server, CONFIG_NEUTRON_DHCP_HOSTS manages
>>>>> dhcp agent, CONFIG_NEUTRON_L3_HOSTS manages l3 agent, and 
>>>>> CONFIG_NEUTRON_OVS_HOST l2/ovs agent. Are those correct?
>>>>> 
>>>>> Another question is after reading codes in neutron_350.py,
>>>>> I found CONFIG_NEUTRON_L3_HOSTS may not work, because of
>>>>> [0]. It is same about CONFIG_NEUTRON_OVS_HOST [1].
>>>>> 
>>>>> So are there some principles like "l2 agent must be
>>>>> installed on same host with neutron server"
>>>>> 
>>>>> [0] 
>>>>> https://github.com/stackforge/packstack/blob/master/packstack/plugins/neutron_350.py#L803-L804
>>>>>
>>>>>
>
>>>>> 
[1]
> https://github.com/stackforge/packstack/blob/master/packstack/plugins/neutron_350.py#L913-L916
>>>>
>>>>
> 
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>> 
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