roles/prometheus/tasks/main.yml

@@ -28,15 +28,6 @@
     group: prometheus
     mode: 0755
 
-- name: Remove old files
-  file:
-    path: "/etc/prometheus/{{ item }}"
-    state: absent
-  with_items:
-    - alert.rules.yml
-    - django.rules.yml
-
-
 - name: Configure Prometheus alerts
   template:
     src: "{{ item }}.j2"

roles/prometheus/templates/prometheus.yml.j2

@@ -100,6 +100,15 @@ scrape_configs:
     file_sd_configs:
       - files:
         - '/etc/prometheus/targets_docker.json'
+    relabel_configs:
+      # Do not put :8087 in instance name, rather here
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: instance
+      - source_labels: [__param_target]
+        target_label: __address__
+        replacement: '$1:8087'
 
   - job_name: postgresql
     file_sd_configs: