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floating IP - HA, kind of - how ?


Hi lejeczek,

What you are describing is what a load balancer provides. The load
balancing project for OpenStack is Octavia.
We have a cookbook that can guide you through setting up a load
balancer: https://docs.openstack.org/octavia/latest/user/guides/basic-cookbook.html

We also gave an OpenStack summit presentation that is an introduction
to load balancing: https://youtu.be/BBgP3_qhJ00

Load balancers provide the health monitoring and automatic redirection
of network traffic. They can also provide this failover much faster
than reconfiguring a floating IP.

Michael

On Thu, Jul 23, 2020 at 11:56 AM lejeczek <peljasz at yahoo.co.uk> wrote:
>
> hi guys,
>
> A novice here so go easy on me please.
> I wonder - is there a mechanism in openstack, a built-in
> feature where a floating IP could be juggled between
> guests/instances dynamically - would you know?
> What comes to mind is something like HA/pacemaker, something
> where business logic operates around condition and actions.
> I cannot make is simpler than such an example - instance_A
> has floating_IPa but if something "bad" happens to it then
> floating_IPa moves to instance_B - can something like that
> be handled by openstack's tooling or goes outside its realm
> and can only be worked out however anybody would do it
> individually?
>
> many thanks, L.