Add support for configuring max_upload_size

roles/matrix-server/defaults/main.yml

@@ -45,3 +45,5 @@ matrix_coturn_turn_udp_min_port: 49152
 matrix_coturn_turn_udp_max_port: 49172
 
 matrix_coturn_turn_external_ip_address: "{{ ansible_host }}"
+
+matrix_max_upload_size_mb: 10

roles/matrix-server/tasks/setup_synapse.yml

@@ -101,6 +101,12 @@
     - {'variable': 'max-port', 'value': "{{ matrix_coturn_turn_udp_max_port }}"}
     - {'variable': 'external-ip', 'value': "{{ matrix_coturn_turn_external_ip_address }}"}
 
+- name: Augment Matrix config (set max upload size)
+  lineinfile: "dest={{ matrix_synapse_data_path }}/homeserver.yaml"
+  args:
+    regexp: "^max_upload_size:"
+    line: 'max_upload_size: "{{ matrix_max_upload_size_mb }}M"'
+
 - name: Allow access to Matrix ports in firewalld
   firewalld:
     port: "{{ item }}"

roles/matrix-server/templates/nginx-conf.d/matrix-synapse.conf.j2

@@ -34,10 +34,8 @@ server {
 		proxy_pass http://synapse:8008;
 		proxy_set_header X-Forwarded-For $remote_addr;
 
-		# These are intentionally large.
-		# Note that Synapse enforces its own limits, which are smaller.
 		client_body_buffer_size 25M;
-		client_max_body_size 100M;
+		client_max_body_size {{ matrix_max_upload_size_mb }}M;
 		proxy_max_temp_file_size 0;
 	}
 }