Re: [openstack-dev] [Openstack] OpenStack-Ansible HA solution

[Adam Spiers]

Wei Hui  wrote:

Liyuenan (Maxwell Li)  wrote:

Hi, all

I have some questions about OSA project.


[snipped]


2.   Could OSA support compute node high available? If my compute node
down, could the instance on this node move to other nodes?


2. As far as I know, OSA don't support compute node HA.
nova has a feature called evacuate,  but some machenism needed to
detect whether nova-compute was down and trigger evacuate.


If you want to find out more about compute node HA you might be
interested in our upcoming presentation in Boston:

https://www.openstack.org/summit/boston-2017/summit-schedule/events/17971/high-availability-for-instances-moving-to-a-converged-upstream-solution

Cheers,
Adam

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Re: [openstack-dev] [Openstack] OpenStack-Ansible HA solution

[Andy McCrae]

Hi Maxwell,


>
> I have some questions about OSA project.
>
>
>
> 1.   OSA can install haproxy, but I can not found any other HA
> solution in openstack-ansible-haproxy_server, like keepalived or
> pacemarker. So how to making HAproxy high-available?
>
Take a look at:
https://docs.openstack.org/developer/openstack-ansible-haproxy_server/configure-haproxy.html#making-haproxy-highly-available
that will give you some direction on how to set that up!

> 2.   Could OSA support compute node high available? If my compute
> node down, could the instance on this node move to other nodes?
>
This wouldn't specifically be OSA as such - the configuration side of it
could be set up by OSA, such as configuration options, shared storage
required. However the automatic evacuation of instances, or migration of
instances wouldn't be handled by OSA or anything that OSA deploys.

I hope that helps! If you have any more questions, or need further help
getting set up with OSA feel free to drop by the #openstack-ansible channel
on Freenode IRC.

Thanks!
Andy
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Re: [openstack-dev] [Openstack] OpenStack-Ansible HA solution

[Wei Hui]

1. OSA use keepalived to manage VIP.
https://github.com/openstack/openstack-ansible/blob/master/ansible-role-requirements.yml#L25

2.As far as I know, OSA don't support compute node HA.
nova has a feature called evacuate,  but some machenism needed to
detect whether nova-compute was down and trigger evacuate.

On Wed, Apr 26, 2017 at 4:36 PM, Liyuenan (Maxwell Li)
 wrote:
> Hi, all
>
>
>
> I have some questions about OSA project.
>
>
>
> 1.   OSA can install haproxy, but I can not found any other HA solution
> in openstack-ansible-haproxy_server, like keepalived or pacemarker. So how
> to making HAproxy high-available?
>
> 2.   Could OSA support compute node high available? If my compute node
> down, could the instance on this node move to other nodes?
>
>
>
> Thank you!
>
>
>
> Best Regards!
>
> Maxwell Li
>
> maxwelli.com
>
>
>
>
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> Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>

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[openstack-dev] [Openstack] OpenStack-Ansible HA solution

[Liyuenan (Maxwell Li)]

Hi, all

I have some questions about OSA project.


1.   OSA can install haproxy, but I can not found any other HA solution in 
openstack-ansible-haproxy_server, like keepalived or pacemarker. So how to 
making HAproxy high-available?

2.   Could OSA support compute node high available? If my compute node 
down, could the instance on this node move to other nodes?

Thank you!

Best Regards!
Maxwell Li
maxwelli.com

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