tested in prod™ + octocatalog-diff:
```lines=20
I, [2021-12-16T11:55:33.397760 #934979] INFO -- : Diffs computed for pergamon.softwareheritage.org
diff origin/production/pergamon.softwareheritage.org current/pergamon.softwareheritage.org
*******************************************
+ Apache::Mod[proxy_wstunnel] =>
parameters =>
"lib_path": "/usr/lib/apache2/modules"
"package_ensure": "present"
*******************************************
Apache::Vhost[grafana.softwareheritage.org_ssl] =>
parameters =>
proxy_pass =>
- [{"path"=>"/", "url"=>"http://127.0.0.1:3000/"}]
+ [{"path"=>"/api/live/", "url"=>"ws://127.0.0.1:3000/api/live/", "reverse_urls"=>[]}, {"path"=>"/", "url"=>"http://127.0.0.1:3000/"}]
*******************************************
Concat::Fragment[grafana.softwareheritage.org_ssl-proxy] =>
parameters =>
content =>
@@ -3,4 +3,5 @@
ProxyRequests Off
ProxyPreserveHost Off
+ ProxyPass /api/live/ ws://127.0.0.1:3000/api/live/
ProxyPass / http://127.0.0.1:3000/
ProxyPassReverse / http://127.0.0.1:3000/
*******************************************
Concat_fragment[grafana.softwareheritage.org_ssl-proxy] =>
parameters =>
content =>
@@ -3,4 +3,5 @@
ProxyRequests Off
ProxyPreserveHost Off
+ ProxyPass /api/live/ ws://127.0.0.1:3000/api/live/
ProxyPass / http://127.0.0.1:3000/
ProxyPassReverse / http://127.0.0.1:3000/
*******************************************
+ File[/etc/apache2/mods-available/proxy_wstunnel.load] =>
parameters =>
"ensure": "file"
"group": "root"
"mode": "0644"
"notify": "Class[Apache::Service]"
"owner": "root"
"content": >>>
LoadModule proxy_wstunnel_module /usr/lib/apache2/modules/mod_proxy_wstunnel.so
<<<
*******************************************
+ File[/etc/apache2/mods-enabled/proxy_wstunnel.load] =>
parameters =>
"ensure": "link"
"group": "root"
"mode": "0644"
"notify": "Class[Apache::Service]"
"owner": "root"
"target": "/etc/apache2/mods-available/proxy_wstunnel.load"
*******************************************
*** End octocatalog-diff on pergamon.softwareheritage.org
*** Running octocatalog-diff on host tate.softwareheritage.org
I, [2021-12-16T11:55:38.448856 #935081] INFO -- : Catalogs compiled for tate.softwareheritage.org
I, [2021-12-16T11:55:39.024590 #935081] INFO -- : Diffs computed for tate.softwareheritage.org
I, [2021-12-16T11:55:39.024622 #935081] INFO -- : No differences
*** End octocatalog-diff on tate.softwareheritage.org
```