Simplify additional JVB configuration

The variable matrix_nginx_proxy_proxy_jitsi_additional_jvbs isn't
needed, as this information is already in the inventory.

This contribution is provided by GRNET S.A. (grnet.gr).

docs/configuring-playbook-jitsi.md

@@ -218,18 +218,6 @@ jitsi_prosody_container_jvb_host_bind_port: 5222
 
 (The default is empty; if it's set then docker forwards the port.)
 
-The nginx configuration will also need to be updated in order to deal with the additional JVB servers. This is achieved via its own configuration variable
-`matrix_nginx_proxy_proxy_jitsi_additional_jvbs`, which contains a dictionary of server ids to ip addresses.
-
-For example,
-
-``` yaml
-matrix_nginx_proxy_proxy_jitsi_additional_jvbs:
-   jvb-2: 192.168.0.2
-   jvb-3: 192.168.0.3
-```
-
-
 Applied together this will allow you to provision extra JVB instances which will register themselves with the prosody service and be available for jicofo
 to route conferences too.
 

roles/custom/matrix-nginx-proxy/defaults/main.yml

@@ -701,12 +701,3 @@ matrix_nginx_proxy_proxy_matrix_nginx_status_allowed_addresses: ['{{ ansible_def
 # http://nginx.org/en/docs/ngx_core_module.html#worker_connections
 matrix_nginx_proxy_worker_processes: auto
 matrix_nginx_proxy_worker_connections: 1024
-
-# A mapping of JVB server ids to hostname/ipa addresses used to add additional jvb blocks
-# to the Jitsi's server configuration (matrix-jitsi.conf)
-# Note: avoid using the JVB server id  "jvb-1" as this is reserved for the main host.
-# Example:
-# matrix_nginx_proxy_proxy_jitsi_additional_jvbs:
-#   jvb-2: 192.168.0.1
-#   jvb-3: 192.168.0.2
-matrix_nginx_proxy_proxy_jitsi_additional_jvbs: {}

roles/custom/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2

@@ -53,10 +53,10 @@
 
 		tcp_nodelay on;
 	}
-	{% for id, ip_address in matrix_nginx_proxy_proxy_jitsi_additional_jvbs.items() %}
+	{% for host in groups['jitsi_jvb_servers'] %}
 	# colibri (JVB) websockets for additional JVBs
-	location ~ ^/colibri-ws/{{ id | regex_escape }}/(.*) {
-		proxy_pass http://{{ ip_address }}:9090/colibri-ws/{{ id }}/$1$is_args$args;
+	location ~ ^/colibri-ws/{{ hostvars[host]['jitsi_jvb_server_id'] | regex_escape }}/(.*) {
+		proxy_pass http://{{ host }}:9090/colibri-ws/{{ hostvars[host]['jitsi_jvb_server_id'] }}/$1$is_args$args;
 
 		proxy_set_header Host $host;
 		proxy_set_header X-Forwarded-For {{ matrix_nginx_proxy_x_forwarded_for }};