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floating IP - HA, kind of - how ?


On 7/25/20 11:07 AM, lejeczek wrote:
> 
> 
> On 23/07/2020 20:01, CHANU ROMAIN wrote:
>> Hello,
>>
>> You should look into Octavia project: LoadBalancer as a Service.
>>
>> Best Regards,
>> Romain
>> ________________________________________
>> From: lejeczek <peljasz at yahoo.co.uk>
>> Sent: Thursday, July 23, 2020 8:51 PM
>> To: OpenStack Discuss
>> Subject: floating IP - HA, kind of - how ?
>>
>> 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.
> Would what you suggest be achievable, doable by a non-admin?

As long as Octavia is installed, yes. If not, then you can achieve what
Octavia does using VRRP ports sharing a floating IP (which you wouldn't
assign, just reserve). That's in fact more or less what Octavia does.

Cheers,

Thomas Goirand (zigo)