Add a prometheus datasource to grafana

abra.sh

@@ -2,3 +2,4 @@ export PROMETHEUS_YML_VERSION=v1
 export PROMTAIL_YML_VERSION=v1
 export LOKI_YML_VERSION=v1
 export NODE_EXPORTER_ENTRYPOINT_VERSION=v1
+export GRAFANA_DATASOURCES_YML_VERSION=v1

compose.yml

@@ -108,6 +108,9 @@ services:
     image: grafana/grafana
     volumes:
       - grafana-data:/var/lib/grafana:rw
+    configs:
+      - source: grafana_datasources_yml
+        target: /etc/grafana/provisioning/datasources/datasources.yml
     networks:
       - api
       - proxy
@@ -145,6 +148,9 @@ configs:
     template_driver: golang
     name: ${STACK_NAME}_loki_yml_${LOKI_YML_VERSION}
     file: loki.yml.tmpl
+  grafana_datasources_yml:
+    name: ${STACK_NAME}_grafana_datasources_yml_${GRAFANA_DATASOURCES_YML_VERSION}
+    file: grafana-datasources.yml
   node_exporter_entrypoint_sh:
     name: ${STACK_NAME}_node_exporter_entrypoint_${NODE_EXPORTER_ENTRYPOINT_VERSION}
     file: node-exporter-entrypoint.sh

grafana-datasources.yml

@@ -0,0 +1,10 @@
+apiVersion: 1
+
+datasources:
+  - name: Prometheus
+    type: prometheus
+    access: proxy
+    orgId: 1
+    url: http://prometheus:9090
+    isDefault: true
+    editable: false