Re: Mirror Mode, replicas and delta-syncrepl

Sam Tran wrote:
> I have two providers, A and B, configured in Mirror Mode behind the
> VIP (vip.example.com). Write operations are performed on the provider
> that hold the VIP at a given time.
>
> The consumer got its initial content load when provider A had the VIP.
> Any subsequent updates on the provider that holds the VIP were
> replicated to the consumer.
>
> I then manually migrated the VIP from provider A to provider B to
> simulate a failover. Any updates on the provider that holds the VIP
> were not replicated to the consumer unless I manually restarted the
> consumer. Here are the resulting logs on the consumer:

> However if I perform an update on provider A (even though it doesn't
> hold the VIP), the change is replicated to the consumer. Here are the
> resulting logs on the consumer:

> Is this the expected behaviour? Should I infer that delta-syncrepl
> does not work when the consumer is pointing to a load balancer
> fronting two providers in Mirror Mode configuration?

This is the expected behavior when you "simulate a failover" without actually 
simulating a failure. I.e., the consumer still has an open connection to the 
original server, and none of your infrastructure has done anything to close it.
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