Running Multiple Passenger Servers with SSL

[Dana]

I'm currently running Passenger/Nginx in production (on top of Ubuntu), with an SSL certificate installed on Nginx (my entire app is served over SSL). 

I want to add a second server for redundancy and performance purposes. Since Passenger and Nginx run on the same machine, it appears that I'm going to need to duplicate the entire app setup I currently have and then run a load balancer in front of the nginx instances. I was thinking about using HAProxy since it supposedly is a better load balancer than Nginx, but it looks like HAProxy doesn't support SSL. So It appears that the optimal config is potentially

nginx -> haproxy -> nginx/passenger (x2)

This seems kind of redundant since I would have to run two levels of nginx servers. Is there a simpler recommended way to set this up?

[Tim Olsen]

I don't believe HAProxy needs direct SSL support as it can load-balance TCP, which is at a lower level than HTTPS.

In other words, it may work with HTTPS if you set it up to load balance TCP.

Tim

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