Allow to keep the host header through a setting

Signed-off-by: Patrick Uiterwijk <puiterwijk@redhat.com>

playbooks/include/proxies-reverseproxy.yml

@@ -455,6 +455,7 @@
     destname: qa-stg-phab
     # Talk directly to the app server, not haproxy
     proxyurl: http://phab.qa-stg01.qa.fedoraproject.org
+    keephost: true
     when: env == "staging"
 
   - role: httpd/reverseproxy

roles/httpd/reverseproxy/tasks/main.yml

@@ -4,6 +4,7 @@
 # - remotepath..
 # - proxyurl
 # - rewrite
+# - keephost
 
 - name: Copy in ProxyPassReverse for {{destname}} ({{website}}{{remotepath}})
   template: >

roles/httpd/reverseproxy/templates/reversepassproxy.conf

@@ -9,5 +9,10 @@ RequestHeader set X-Scheme https early
 RequestHeader set X-Forwarded-Proto https early
 
 {% endif %}
+
+{% if keephost %}
+ProxyPreserveHost On
+{% endif %}
+
 ProxyPass {{ localpath }} {{ proxyurl }}{{remotepath}}
 ProxyPassReverse {{ localpath }} {{ proxyurl }}{{remotepath}}

roles/httpd/reverseproxy/vars/main.yml

@@ -3,3 +3,4 @@ localpath: /
 destname: reversepassproxy
 rewrite: false
 header_scheme: false
+keephost: false