diff --git a/group_vars/reverse_proxy.yml b/group_vars/reverse_proxy.yml
new file mode 100644
index 0000000000000000000000000000000000000000..2951fe30a757aef31c0dc832c8b9271780440d52
--- /dev/null
+++ b/group_vars/reverse_proxy.yml
@@ -0,0 +1,42 @@
+reverse_proxy:
+  contact: "contact@crans.org"
+  who: "l'équipe technique du Cr@ns"
+  ssl:
+    cert: /etc/letsencrypt/live/crans.org/fullchain.pem
+    cert_key: /etc/letsencrypt/live/crans.org/privkey.pem
+    trusted_cert: /etc/letsencrypt/live/crans.org/chain.pem
+
+  redirect_dnames:
+    - crans.org
+    - crans.eu
+    - crans.fr
+
+  reverseproxy_sites:
+    # Services web Crans
+    - {from: lutim, to: 10.231.136.69}
+      #    - {from: zero, to: 10.231.136.76}
+      #    - {from: pad, to: "10.231.136.76:9001"}
+      #    - {from: ethercalc, to: "10.231.136.203:8000"}
+      #    - {from: mediadrop, to: 10.231.136.106}
+      #    - {from: videos, to: 10.231.136.106}
+      #    - {from: video, to: 10.231.136.106}
+      #    - {from: roundcube, to: 10.231.136.105}
+      #    - {from: phabricator, to: 10.231.136.123}
+      #    - {from: trackerusercontent, to: 10.231.136.123}
+      #    - {from: cas, to: 10.231.136.18}
+      #    - {from: auth, to: 10.231.136.18}
+      #    - {from: login, to: 10.231.136.18}
+      #    - {from: webmail, to: 10.231.136.107}
+      #    - {from: horde, to: 10.231.136.107}
+      #    - {from: owncloud, to: 10.231.136.26}
+      #    - {from: ftps, to: 10.231.136.98}
+      #    - {from: wiki, to: 10.231.136.204}
+      #    - {from: calendrier, to: 10.231.136.204}
+      #    - {from: www, to: 10.231.136.46}
+      #    - {from: doc, to: 10.231.136.46}
+      #    - {from: limesurvey, to: 10.231.136.253}
+      #    - {from: perso, to: 10.231.136.1}
+      #    - {from: webnews, to: 10.231.136.63}
+      #    - {from: re2o, to: 10.231.136.9}
+      #    - {from: intranet, to: 10.231.136.9}
+      #    - {from: autoconfig, to: 10.231.136.46}
diff --git a/group_vars/reverseproxy.yml b/group_vars/reverseproxy.yml
new file mode 100644
index 0000000000000000000000000000000000000000..0ad542a9d6aee31cfbf2ccb6f3f34a3de85e67dd
--- /dev/null
+++ b/group_vars/reverseproxy.yml
@@ -0,0 +1,74 @@
+nginx:
+  contact: contact@crans.org
+  who: "l'équipe technique du Cr@ns"
+  ssl:
+    cert: /etc/letsencrypt/live/crans.org/fullchain.pem
+    cert_key: /etc/letsencrypt/live/crans.org/privkey.pem
+    trusted_cert: /etc/letsencrypt/live/crans.org/chain.pem
+
+  redirect_dnames:
+    - crans.eu
+    - crans.fr
+
+  reverseproxy_sites: []
+    #    # Services web Crans
+    #    - {from: lutim.crans.org, to: 10.231.136.69}
+    #    - {from: zero.crans.org, to: 10.231.136.76}
+    #    - {from: pad.crans.org, to: "10.231.136.76:9001"}
+    #    - {from: ethercalc.crans.org, to: "10.231.136.203:8000"}
+    #    - {from: mediadrop.crans.org, to: 10.231.136.106}
+    #    - {from: videos.crans.org, to: 10.231.136.106}
+    #    - {from: video.crans.org, to: 10.231.136.106}
+    #    - {from: roundcube.crans.org, to: 10.231.136.105}
+    #    - {from: phabricator.crans.org, to: 10.231.136.123}
+    #    - {from: trackerusercontent.crans.org, to: 10.231.136.123}
+    #    - {from: cas.crans.org, to: 10.231.136.18}
+    #    - {from: auth.crans.org, to: 10.231.136.18}
+    #    - {from: login.crans.org, to: 10.231.136.18}
+    #    - {from: webmail.crans.org, to: 10.231.136.107}
+    #    - {from: horde.crans.org, to: 10.231.136.107}
+    #    - {from: owncloud.crans.org, to: 10.231.136.26}
+    #    - {from: ftps.crans.org, to: 10.231.136.98}
+    #    - {from: wiki.crans.org, to: 10.231.136.204}
+    #    - {from: www.crans.org, to: 10.231.136.46}
+    #    - {from: doc.crans.org, to: 10.231.136.46}
+    #    - {from: limesurvey.crans.org, to: 10.231.136.253}
+    #    - {from: perso.crans.org, to: 10.231.136.1}
+    #    - {from: webnews.crans.org, to: 10.231.136.63}
+    #    - {from: re2o.crans.org, to: 10.231.136.9}
+    #    - {from: intranet.crans.org, to: 10.231.136.9}
+    #    - {from: autoconfig.crans.org, to: 10.231.136.46}
+    #    - {from: grafana.crans.org, to: "10.231.136.102:3000"}
+    #    - {from: webirc.crans.org, to: "10.231.136.1:9000"}
+    #    - {from: framadate.crans.org, to: 10.231.136.153}
+    #    - {from: mailman.crans.org, to: 10.231.136.180}
+    #
+    #    # Zamok
+    #    - {from: install-party.crans.org, to: 10.231.136.1}
+    #    - {from: med.crans.org, to: 10.231.136.1}
+    #    - {from: med-cartons.crans.org, to: 10.231.136.1}
+    #    - {from: amap.crans.org, to: 10.231.136.1}
+    #    - {from: pot-vieux.crans.org, to: 10.231.136.1}
+    #    - {from: bonvivens.crans.org, to: 10.231.136.1}
+    #
+  redirect_sites: []
+    #    - {from: crans.org, to: www.crans.org}
+    #
+    #    # Aliases or legacy support
+    #    - {from: factures.crans.org, to: intranet.crans.org}
+    #    - {from: accounts.crans.org, to: intranet.crans.org}
+    #    - {from: intranet2.crans.org, to: intranet.crans.org}
+    #    - {from: clubs.crans.org, to: perso.crans.org}
+    #    - {from: task.crans.org, to: phabricator.crans.org}
+    #    - {from: adopteunpingouin.crans.org, to: install-party.crans.org}
+    #    - {from: i-p.crans.org, to: install-party.crans.org}
+    #
+    #    # To the wiki
+    #    - {from: wikipedia.crans.org, to: wiki.crans.org}
+    #    - {from: wifi.crans.org, to: wiki.crans.org/CransD%C3%A9marrage}
+    #    - {from: television.crans.org, to: wiki.crans.org/CransTv}
+    #    - {from: tv.crans.org, to: wiki.crans.org/CransTv}
+    #
+    #    # ENS Cachan
+    #    - {from: crans.ens-cachan.fr, to: www.crans.org}
+    #    - {from: install-party.ens-cachan.fr, to: install-party.crans.org}
diff --git a/hosts b/hosts
index 50f5c5f204d44ca693de4dd75725a2ad41f66642..328a1f21125a70e063df80ced8dbae5376b71e6b 100644
--- a/hosts
+++ b/hosts
@@ -25,6 +25,10 @@
 # [test_vm]
 # re2o-test.adm.crans.org
 
+[reverseproxy]
+hodaur.adm.crans.org
+frontdaur.adm.crans.org
+
 [radius]
 routeur-sam.adm.crans.org
 
@@ -72,6 +76,7 @@ routeur-sam.adm.crans.org
 routeur-daniel.adm.crans.org
 belenios # on changera plus tard
 re2o-ldap.adm.crans.org
+hodaur.adm.crans.org
 
 [ovh_physical]
 sputnik.adm.crans.org
diff --git a/plays/reverse-proxy.yml b/plays/reverse-proxy.yml
index 5daf6670cd43968563891e48594529ef43447d82..413dc69018cd6f0f257205e201b35edf0f3674c9 100755
--- a/plays/reverse-proxy.yml
+++ b/plays/reverse-proxy.yml
@@ -1,53 +1,5 @@
 #!/usr/bin/env ansible-playbook
 ---
-# Deploy reverse proxy
-# Frontdaur is the backup of bakdaur (keepalived)
-- hosts: bakdaur.adm.crans.org,frontdaur.adm.crans.org
-  vars:
-    certbot:
-      dns_rfc2136_name: certbot_challenge.
-      dns_rfc2136_secret: "{{ vault_certbot_dns_secret }}"
-      mail: root@crans.org
-      certname: crans.org
-      domains: "crans.org, *.crans.org, crans.fr, *.crans.fr, crans.eu, *.crans.eu"
-    bind:
-      masters: "{{ lookup('re2oapi', 'get_role', 'dns-authoritary-master')[0] }}"
-    nginx:
-      ssl:
-        cert: /etc/letsencrypt/live/crans.org/fullchain.pem
-        cert_key: /etc/letsencrypt/live/crans.org/privkey.pem
-        trusted_cert: /etc/letsencrypt/live/crans.org/chain.pem
-
-      redirect_dnames:
-        - crans.eu
-        - crans.fr
-
-      reverseproxy_sites:
-        # Services web Crans
-        - {from: lutim.crans.org, to: 10.231.136.69}
-        - {from: zero.crans.org, to: 10.231.136.76}
-        - {from: pad.crans.org, to: "10.231.136.76:9001"}
-        - {from: ethercalc.crans.org, to: "10.231.136.203:8000"}
-        - {from: mediadrop.crans.org, to: 10.231.136.106}
-        - {from: videos.crans.org, to: 10.231.136.106}
-        - {from: video.crans.org, to: 10.231.136.106}
-        - {from: roundcube.crans.org, to: 10.231.136.105}
-        - {from: phabricator.crans.org, to: 10.231.136.123}
-        - {from: trackerusercontent.crans.org, to: 10.231.136.123}
-        - {from: cas.crans.org, to: 10.231.136.18}
-        - {from: auth.crans.org, to: 10.231.136.18}
-        - {from: login.crans.org, to: 10.231.136.18}
-        - {from: webmail.crans.org, to: 10.231.136.107}
-        - {from: horde.crans.org, to: 10.231.136.107}
-        - {from: owncloud.crans.org, to: 10.231.136.26}
-        - {from: ftps.crans.org, to: 10.231.136.98}
-        - {from: wiki.crans.org, to: 10.231.136.204}
-        - {from: calendrier.crans.org, to: 10.231.136.204}
-        - {from: www.crans.org, to: 10.231.136.46}
-        - {from: doc.crans.org, to: 10.231.136.46}
-        - {from: limesurvey.crans.org, to: 10.231.136.253}
-        - {from: perso.crans.org, to: 10.231.136.1}
-        - {from: webnews.crans.org, to: 10.231.136.63}
-        - {from: re2o.crans.org, to: 10.231.136.9}
-        - {from: intranet.crans.org, to: 10.231.136.9}
-        - {from: autoconfig.crans.org, to: 10.231.136.46}
+- hosts: reverseproxy
+  roles:
+    - nginx-reverseproxy
diff --git a/roles/nginx-reverseproxy/tasks/main.yml b/roles/nginx-reverseproxy/tasks/main.yml
index c021eef726787ad62fb31875ee5e7e859d491d00..5a23f9925baa8521d7885cc91ae54c75ac78ffad 100644
--- a/roles/nginx-reverseproxy/tasks/main.yml
+++ b/roles/nginx-reverseproxy/tasks/main.yml
@@ -15,16 +15,10 @@
     - options-ssl.conf
     - options-proxypass.conf
 
-- name: Has dhparam been copied?
-  stat:
-    path: /etc/letsencrypt/dhparam
-  register: stat_result
-
 - name: Copy dhparam
   template:
     src: letsencrypt/dhparam.j2
     dest: /etc/letsencrypt/dhparam
-  when: not stat_result.stat.exists
 
 - name: Copy reverse proxy sites
   template:
@@ -46,6 +40,7 @@
     - reverseproxy_redirect_dname
     - redirect
   notify: Reload nginx
+  ignore_errors: "{{ ansible_check_mode }}"
 
 - name: Copy 50x error page
   template:
diff --git a/roles/nginx-reverseproxy/templates/www/html/50x.html.j2 b/roles/nginx-reverseproxy/templates/www/html/50x.html.j2
index b4bde1f90226d0dd6515efc90ce8e0175f7fe4db..078e2de2869707e86eb488c9199671dcaa4efbb4 100644
--- a/roles/nginx-reverseproxy/templates/www/html/50x.html.j2
+++ b/roles/nginx-reverseproxy/templates/www/html/50x.html.j2
@@ -57,7 +57,7 @@
     <h1>502</h1>
     <p>Whoops, le service prend trop de temps à répondre…</p>
     <p>Essayez de rafraîchir la page. Si le problème persiste, pensez
-    à contacter <a href="mailto:contact@crans.org">l'équipe technique du Cr@ns</a>.</p>
+    à contacter <a href="mailto:{{ nginx.contact }}">{{ nginx.who }}</a>.</p>
 </body>
 </html>