monitoring: increase prometheus tsdb retention time from 15d to 30d

.idea/jsonSchemas.xml

@@ -102,6 +102,22 @@
             </SchemaInfo>
           </value>
         </entry>
+        <entry key="prometheus.json">
+          <value>
+            <SchemaInfo>
+              <option name="name" value="prometheus.json" />
+              <option name="relativePathToSchema" value="https://json.schemastore.org/prometheus.json" />
+              <option name="applicationDefined" value="true" />
+              <option name="patterns">
+                <list>
+                  <Item>
+                    <option name="path" value="roles/alpina/collections/services/monitoring/templates/prometheus_config/prometheus.yml.j2" />
+                  </Item>
+                </list>
+              </option>
+            </SchemaInfo>
+          </value>
+        </entry>
       </map>
     </state>
   </component>

roles/alpina/collections/services/monitoring/templates/docker-compose.yml.j2

@@ -60,6 +60,9 @@ services:
     restart: unless-stopped
     # Needed to make config files readable
     user: "{{ remote_uid }}"
+    command:
+      - --config.file=/etc/prometheus/prometheus.yml
+      - --storage.tsdb.retention.time=30d
     volumes:
       - ./prometheus_config:/etc/prometheus:ro
       - {{ base_volume_path }}/monitoring/prometheus_configs:/etc/prometheus/extra:ro