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haproxy config snippet in readme

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goeranh 2026-02-25 20:50:23 +01:00
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58
hosts/proxy/README.md
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@ -8,3 +8,61 @@ Für uns sind http und tcp relevant.
Unverschlüsselte Verbindungen werden mit dem http Modul geparst und weitergeleitet.
Bei SSL-Verbindungen wird beim Session-Aufbau der Hostname beobachtet und anhand dessen, die komplette verschlüsselte Verbindung an das jeweilige System weitergeletet.
Damit können alle Systeme weiterhin selbst mit certbot ihre TLS-Zertifikate anfordern, da auch die ACME-Challenge weitergeleitet wird.
### Config
Relevant HAProxy config:
```
frontend http-in
bind *:80
acl is_cloud hdr(host) -i cloud.htw.stura-dresden.de
acl is_dat hdr(host) -i dat.htw.stura-dresden.de
acl is_plone hdr(host) -i stura.htw-dresden.de
acl is_plone_alt hdr(host) -i www.stura.htw-dresden.de
acl is_pro hdr(host) -i pro.htw.stura-dresden.de
acl is_tix hdr(host) -i tix.htw.stura-dresden.de
acl is_vot hdr(host) -i vot.htw.stura-dresden.de
acl is_wiki hdr(host) -i wiki.htw.stura-dresden.de
use_backend cloud_80 if is_cloud
use_backend dat_80 if is_dat
use_backend plone_80 if is_plone
use_backend plone_alt_80 if is_plone_alt
use_backend pro_80 if is_pro
use_backend tix_80 if is_tix
use_backend vot_80 if is_vot
use_backend wiki_80 if is_wiki
default_backend plone_80
frontend sni_router
bind *:443
mode tcp
tcp-request inspect-delay 1s
tcp-request content accept if { req_ssl_hello_type 1 }
use_backend cloud_443 if { req_ssl_sni -i cloud.htw.stura-dresden.de }
use_backend dat_443 if { req_ssl_sni -i dat.htw.stura-dresden.de }
use_backend plone_443 if { req_ssl_sni -i stura.htw-dresden.de }
use_backend plone_alt_443 if { req_ssl_sni -i www.stura.htw-dresden.de }
use_backend pro_443 if { req_ssl_sni -i pro.htw.stura-dresden.de }
use_backend tix_443 if { req_ssl_sni -i tix.htw.stura-dresden.de }
use_backend vot_443 if { req_ssl_sni -i vot.htw.stura-dresden.de }
use_backend wiki_443 if { req_ssl_sni -i wiki.htw.stura-dresden.de }
# this block is repeated for each backend
backend cloud_80
mode http
server cloud 141.56.51.16:80 # no check here - also proxy if haproxy thinks this is down
backend cloud_443
mode tcp
server cloud 141.56.51.16:443 check
...
...
...
```