feat(observability): add mana-search, mana-media, and Synapse to monitoring

- Add Prometheus scraping for mana-search (port 3020, already has metrics)
- Add Prometheus scraping for mana-media (port 3015, MetricsModule added)
- Add Prometheus scraping for Matrix Synapse (port 9002, already enabled)
- Add MetricsModule to mana-media with media_ prefix
- Update Dockerfile for mana-media to include shared-nestjs-metrics
- Replace hardcoded ServiceDown alert list with dynamic regex
  (.*-backend|mana-core-auth|mana-search|mana-media|synapse)
- Replace hardcoded backends.json query with dynamic regex
- Add Search, Media, Synapse to master-overview and system-overview dashboards

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker/grafana/dashboards/backends.json

@@ -58,7 +58,7 @@
 			"targets": [
 				{
 					"datasource": { "type": "prometheus", "uid": "${datasource}" },
-					"expr": "up{job=~\"mana-core-auth|chat-backend|todo-backend|calendar-backend|clock-backend|contacts-backend|storage-backend|presi-backend|nutriphi-backend|skilltree-backend|photos-backend|zitare-backend|mukke-backend|planta-backend|picture-backend\"}",
+					"expr": "up{job=~\"mana-core-auth|.*-backend|mana-search|mana-media\"}",
 					"legendFormat": "{{job}}",
 					"refId": "A"
 				}

docker/grafana/dashboards/master-overview.json

@@ -498,6 +498,24 @@
 					"legendFormat": "Picture",
 					"refId": "R"
 				},
+				{
+					"datasource": { "type": "prometheus", "uid": "${datasource}" },
+					"expr": "up{job=\"mana-search\"}",
+					"legendFormat": "Search",
+					"refId": "S"
+				},
+				{
+					"datasource": { "type": "prometheus", "uid": "${datasource}" },
+					"expr": "up{job=\"mana-media\"}",
+					"legendFormat": "Media",
+					"refId": "T"
+				},
+				{
+					"datasource": { "type": "prometheus", "uid": "${datasource}" },
+					"expr": "up{job=\"synapse\"}",
+					"legendFormat": "Synapse",
+					"refId": "U"
+				},
 				{
 					"datasource": { "type": "prometheus", "uid": "${datasource}" },
 					"expr": "pg_up",

docker/grafana/dashboards/system-overview.json

@@ -625,6 +625,24 @@
 					"legendFormat": "Picture",
 					"refId": "R"
 				},
+				{
+					"datasource": { "type": "prometheus", "uid": "${datasource}" },
+					"expr": "up{job=\"mana-search\"}",
+					"legendFormat": "Search",
+					"refId": "S"
+				},
+				{
+					"datasource": { "type": "prometheus", "uid": "${datasource}" },
+					"expr": "up{job=\"mana-media\"}",
+					"legendFormat": "Media",
+					"refId": "T"
+				},
+				{
+					"datasource": { "type": "prometheus", "uid": "${datasource}" },
+					"expr": "up{job=\"synapse\"}",
+					"legendFormat": "Synapse",
+					"refId": "U"
+				},
 				{
 					"datasource": { "type": "prometheus", "uid": "${datasource}" },
 					"expr": "pg_up",

docker/prometheus/alerts.yml

@@ -3,7 +3,7 @@ groups:
     rules:
       # Service Down Alert
       - alert: ServiceDown
-        expr: up{job=~"mana-core-auth|chat-backend|todo-backend|calendar-backend|clock-backend|contacts-backend|storage-backend|presi-backend|nutriphi-backend|skilltree-backend|photos-backend|zitare-backend|mukke-backend|planta-backend|picture-backend"} == 0
+        expr: up{job=~"mana-core-auth|.*-backend|mana-search|mana-media|synapse"} == 0
         for: 1m
         labels:
           severity: critical

docker/prometheus/prometheus.yml

@@ -154,6 +154,31 @@ scrape_configs:
     metrics_path: '/metrics'
     scrape_interval: 30s
 
+  # ============================================
+  # Core Services
+  # ============================================
+
+  # Mana Search Service
+  - job_name: 'mana-search'
+    static_configs:
+      - targets: ['mana-search:3020']
+    metrics_path: '/metrics'
+    scrape_interval: 30s
+
+  # Mana Media Service
+  - job_name: 'mana-media'
+    static_configs:
+      - targets: ['mana-media:3015']
+    metrics_path: '/metrics'
+    scrape_interval: 30s
+
+  # Matrix Synapse
+  - job_name: 'synapse'
+    static_configs:
+      - targets: ['synapse:9002']
+    metrics_path: '/_synapse/metrics'
+    scrape_interval: 30s
+
   # ============================================
   # Pushgateway (deploy metrics, batch jobs)
   # ============================================

services/mana-media/apps/api/Dockerfile

@@ -9,6 +9,7 @@ WORKDIR /app
 # Copy all necessary files
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
 COPY packages/shared-drizzle-config ./packages/shared-drizzle-config
+COPY packages/shared-nestjs-metrics ./packages/shared-nestjs-metrics
 COPY services/mana-media ./services/mana-media
 
 # Install all dependencies
@@ -40,6 +41,7 @@ COPY --from=builder --chown=nestjs:nodejs /app/services/mana-media/apps/api/node
 
 # Copy shared packages that are symlinked
 COPY --from=builder --chown=nestjs:nodejs /app/packages/shared-drizzle-config /app/packages/shared-drizzle-config
+COPY --from=builder --chown=nestjs:nodejs /app/packages/shared-nestjs-metrics /app/packages/shared-nestjs-metrics
 
 # Copy built application
 COPY --from=builder --chown=nestjs:nodejs /app/services/mana-media/apps/api/dist ./dist

services/mana-media/apps/api/package.json

@@ -13,6 +13,7 @@
 		"db:studio": "drizzle-kit studio"
 	},
 	"dependencies": {
+		"@manacore/shared-nestjs-metrics": "workspace:*",
 		"@nestjs/bullmq": "^11.0.0",
 		"@nestjs/common": "^11.0.0",
 		"@nestjs/config": "^3.3.0",

services/mana-media/apps/api/src/app.module.ts

@@ -1,6 +1,7 @@
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
 import { BullModule } from '@nestjs/bullmq';
+import { MetricsModule } from '@manacore/shared-nestjs-metrics';
 import { DatabaseModule } from './db/database.module';
 import { UploadModule } from './modules/upload/upload.module';
 import { StorageModule } from './modules/storage/storage.module';
@@ -14,6 +15,10 @@ import { HealthController } from './health.controller';
 		ConfigModule.forRoot({
 			isGlobal: true,
 		}),
+		MetricsModule.register({
+			prefix: 'media_',
+			excludePaths: ['/health'],
+		}),
 		BullModule.forRoot({
 			connection: {
 				host: process.env.REDIS_HOST || 'localhost',