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haproxy: ssl backends
Published: 10-12-2013 | Author: Remy van Elst | Text only version of this article
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This snippets shows you how to add an ssl backend to HAPROXY. You need haproxy 1.5 or higher, 1.4 does not support ssl backends.
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Note: this is not about adding ssl to a frontend. this allows you to use an ssl enabled website as backend for haproxy.
The following config is required in a backend section:
backend example-backend
balance roundrobin
option httpchk GET /health_check
server srv01 10.20.30.40:443 weight 1 maxconn 100 check ssl verify none
server srv02 10.20.30.41:443 weight 1 maxconn 100 check ssl verify none
The important parts are:
10.20.30.41:443
ssl verify none
You can also specify verify all. As expected, this will verify all certificates,
however this will generate extra load. For this example setup the verify none
is good enough.