s_n Wrote:
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> Hi all,
>
> we want to use a F5 loadbalancer in front of two nginx instances,
> which balance the load to our app-nodes.

Why not cut out the F5, use stream to balance between the same instance(s) (loop back) with either a single server block and loadbalanced upstream or split up, which ever works best / more consistent in load distribution.

nginx is by default a better loadbalancer then a F5, but that's a personal opinion.

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nginx for Windows http://nginx-win.ecsds.eu/