Re: [openstack-dev] [neutron]Does neutron-server support the main backup redundancy?

2018-03-22 Thread Sławomir Kapłoński
Hi,

Neutron agents communicate with server through RPC messages. So agent don't 
need to know how many servers are on the other end of queue to consume 
messages. If You will start new neutron-server it will connect to same rabbitmq 
as other servers and to same db and will start processing messages.
If Your new server should also process API requests, You should put You neutron 
server behind some load balancer and add new server as a backend to Your farm.

— 
Best regards
Slawek Kaplonski
sla...@kaplonski.pl

> Wiadomość napisana przez Frank Wang  w dniu 
> 22.03.2018, o godz. 03:25:
> 
> Thanks for your response, another question is Does the compute nodes or 
> agents know how many neutron-servers running? I mean If there was a server 
> corrupt, they will automatically connect to other servers?
> 
> Thanks,
> 
> At 2018-03-21 18:14:47, "Miguel Angel Ajo Pelayo"  wrote:
> You can run as many as you want, generally an haproxy is used in front of 
> them to balance load across neutron servers.
> 
> Also, keep in mind, that the db backend is a single mysql, you can also 
> distribute that with galera.
> 
> That is the configuration you will get by default when you deploy in HA with 
> RDO/TripleO or OSP/Director.
> 
> On Wed, Mar 21, 2018 at 3:34 AM Kevin Benton  wrote:
> You can run as many neutron server processes as you want in an active/active 
> setup. 
> 
> On Tue, Mar 20, 2018, 18:35 Frank Wang  wrote:
> Hi All,
>  As far as I know, neutron-server only can be a single node, In order to 
> improve the reliability of the system, Does it support the main backup or 
> active/active redundancy? Any comment would be appreciated.
> 
> Thanks,
> 
> 
>  
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Re: [openstack-dev] [neutron]Does neutron-server support the main backup redundancy?

2018-03-21 Thread Frank Wang
Thanks for your response, another question is Does the compute nodes or agents 
know how many neutron-servers running? I mean If there was a server corrupt, 
they will automatically connect to other servers?

Thanks,


At 2018-03-21 18:14:47, "Miguel Angel Ajo Pelayo"  wrote:

You can run as many as you want, generally an haproxy is used in front of them 
to balance load across neutron servers.


Also, keep in mind, that the db backend is a single mysql, you can also 
distribute that with galera.


That is the configuration you will get by default when you deploy in HA with 
RDO/TripleO or OSP/Director.



On Wed, Mar 21, 2018 at 3:34 AM Kevin Benton  wrote:

You can run as many neutron server processes as you want in an active/active 
setup. 


On Tue, Mar 20, 2018, 18:35 Frank Wang  wrote:

Hi All,
 As far as I know, neutron-server only can be a single node, In order to 
improve the reliability of the system, Does it support the main backup or 
active/active redundancy? Any comment would be appreciated.

Thanks,





 

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Re: [openstack-dev] [neutron]Does neutron-server support the main backup redundancy?

2018-03-21 Thread Miguel Angel Ajo Pelayo
You can run as many as you want, generally an haproxy is used in front of
them to balance load across neutron servers.

Also, keep in mind, that the db backend is a single mysql, you can also
distribute that with galera.

That is the configuration you will get by default when you deploy in HA
with RDO/TripleO or OSP/Director.

On Wed, Mar 21, 2018 at 3:34 AM Kevin Benton  wrote:

> You can run as many neutron server processes as you want in an
> active/active setup.
>
> On Tue, Mar 20, 2018, 18:35 Frank Wang  wrote:
>
>> Hi All,
>>  As far as I know, neutron-server only can be a single node, In order
>> to improve the reliability of the system, Does it support the main backup
>> or active/active redundancy? Any comment would be appreciated.
>>
>> Thanks,
>>
>>
>>
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>> Unsubscribe:
>> openstack-dev-requ...@lists.openstack.org?subject:unsubscribe
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Re: [openstack-dev] [neutron]Does neutron-server support the main backup redundancy?

2018-03-20 Thread Kevin Benton
You can run as many neutron server processes as you want in an
active/active setup.

On Tue, Mar 20, 2018, 18:35 Frank Wang  wrote:

> Hi All,
>  As far as I know, neutron-server only can be a single node, In order
> to improve the reliability of the system, Does it support the main backup
> or active/active redundancy? Any comment would be appreciated.
>
> Thanks,
>
>
>
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