Agreed. So it would seem there is an issue getting the traffic back out again as suspected.

We don't have a million users so I shan't bother looking at the F5s. Will hassle Google again.

I suspect their health check is randomly removing the machines from the load balancers.

Thanks

On 25 July 2014 13:24, Alan DeKok <aland@deployingradius.com> wrote:

Simon Morley wrote:
> I've discussed with Google and they're saying the connection isn't
> closed and the load-balancer therefore puts the instance in 'unhealthy'
> mode.

UDP sessions aren't "closed". The google support guys don't seem to
be competent.

> Has anyone tried this successfully - either on GCE or other UDP load
> balancer? Does anyone have any thoughts about how I could solve?

F5 load balancers seem to work. But they are useful only when you're
at Telco scale. i.e. 1M+ users. For pretty much everyone else, it
doesn't matter.

Alan DeKok.
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