Statistics with Grafana/Prometheus with sensor based on Overleaf instance statistics- #178

tools/reference_stack_compose/mongo-probe/compose.yaml

@@ -0,0 +1,26 @@
+# mongo-probe — protocol-level liveness check of the stack Mongo.
+# Reuses the stack's own mongo image: its mongosh is the canonical client.
+# healthy == the db answers a real ping (same pattern as the OlliTeX
+# toolkit mongo-probe).
+services:
+  mongo-probe:
+    image: mongo:${MONGO_VERSION:-9.0}
+    container_name: mongo-probe
+    hostname: mongo-probe
+    restart: unless-stopped
+    command: ["sh", "-c", "sleep infinity"]
+    environment:
+      MONGO_HOSTNAME: ${MONGO_HOSTNAME:-mongo}
+      MONGO_PORT: ${MONGO_PORT:-27017}
+    healthcheck:
+      test: ["CMD-SHELL", "mongosh --quiet --host ${MONGO_HOSTNAME} --port ${MONGO_PORT} --eval 'db.adminCommand({ping:1})' >/dev/null 2>&1 || exit 1"]
+      interval: 15s
+      timeout: 5s
+      retries: 5
+      start_period: 20s
+    networks:
+      - overleaf-network
+
+networks:
+  overleaf-network:
+    external: true