Merge pull request #1153 from Cadair/worker_prom

Add worker metrics to prometheus exporter

group_vars/matrix_servers

@@ -1777,6 +1777,7 @@ matrix_prometheus_container_http_host_bind_port: "{{ '' if matrix_nginx_proxy_en
 
 matrix_prometheus_scraper_synapse_enabled: "{{ matrix_synapse_enabled and matrix_synapse_metrics_enabled }}"
 matrix_prometheus_scraper_synapse_targets: ['matrix-synapse:{{ matrix_synapse_metrics_port }}']
+matrix_prometheus_scraper_synapse_workers_enabled_list: "{{ matrix_synapse_workers_enabled_list }}"
 matrix_prometheus_scraper_synapse_rules_synapse_tag: "{{ matrix_synapse_docker_image_tag }}"
 
 matrix_prometheus_scraper_node_enabled: "{{ matrix_prometheus_node_exporter_enabled }}"

roles/matrix-prometheus/defaults/main.yml

@@ -34,6 +34,7 @@ matrix_prometheus_scraper_synapse_rules_synapse_tag: "master"
 matrix_prometheus_scraper_synapse_rules_download_url: "https://raw.githubusercontent.com/matrix-org/synapse/{{ matrix_prometheus_scraper_synapse_rules_synapse_tag }}/contrib/prometheus/synapse-v2.rules"
 
 matrix_prometheus_scraper_synapse_targets: []
+matrix_prometheus_scraper_synapse_workers_enabled_list: []
 
 # Tells whether the "node" scraper configuration is enabled.
 # This configuration aims to scrape the current node (this server).

roles/matrix-prometheus/templates/prometheus.yml.j2

@@ -31,6 +31,19 @@ scrape_configs:
     metrics_path: '/_synapse/metrics'
     static_configs:
     - targets: {{ matrix_prometheus_scraper_synapse_targets|to_json }}
+      labels:
+        instance: {{ matrix_domain }}
+        job: master
+        index: 0
+  {% for worker in matrix_prometheus_scraper_synapse_workers_enabled_list %}
+  {% if worker.metrics_port != 0 %}
+    - targets: ['matrix-synapse-worker-{{ worker.type }}-{{ worker.instanceId }}:{{ worker.metrics_port }}']
+      labels:
+        instance: {{ matrix_domain }}
+        job: {{ worker.type }}
+        index: {{ worker.instanceId }}
+  {% endif %}
+  {% endfor %}
   {% endif %}
 
   {% if matrix_prometheus_scraper_node_enabled %}