Add Alloy service and configuration for Grafana Alloy and Tempo

alloy/Dockerfile

@@ -0,0 +1,4 @@
+ARG UPSTREAM_VERSION_ALLOY=latest
+FROM grafana/alloy:${UPSTREAM_VERSION_ALLOY}
+
+COPY config.alloy /etc/alloy/config.alloy

alloy/config.alloy

@@ -0,0 +1,84 @@
+logging {
+  level  = "info"
+  format = "logfmt"
+}
+
+// Prometheus remote write for metrics
+prometheus.remote_write "metrics_write" {
+  endpoint {
+    name = "default"
+    url  = "http://prometheus.dms.dappnode:9090/api/v1/write"
+
+    queue_config { }
+    metadata_config { }
+  }
+}
+
+// Loki log processing pipeline
+loki.process "logs_process_client" {
+  forward_to = [loki.write.logs_write_client.receiver]
+
+  stage.logfmt {
+    mapping = { "kind" = "", "service_name" = "", "app" = "" }
+  }
+
+  stage.labels {
+    values = { "kind" = "kind", "service_name" = "service_name", "app" = "app" }
+  }
+}
+
+// Loki write endpoint
+loki.write "logs_write_client" {
+  endpoint {
+    url = "http://loki.dms.dappnode:3100/loki/api/v1/push"
+  }
+}
+
+// Faro receiver for frontend telemetry collection
+faro.receiver "integrations_app_agent_receiver" {
+  server {
+    listen_address           = "0.0.0.0"
+    listen_port              = 12345
+    cors_allowed_origins     = ["*"]
+    max_allowed_payload_size = "10MiB"
+
+    rate_limiting {
+      rate = 100
+    }
+  }
+
+  sourcemaps { }
+
+  output {
+    logs   = [loki.process.logs_process_client.receiver]
+    traces = [otelcol.exporter.otlp.trace_write.input]
+  }
+}
+
+// OpenTelemetry OTLP receiver for traces
+otelcol.receiver.otlp "default" {
+  grpc {
+    endpoint         = "0.0.0.0:4317"
+    include_metadata = true
+  }
+
+  http {
+    endpoint = "0.0.0.0:4318"
+  }
+
+  output {
+    metrics = []
+    logs    = []
+    traces  = [otelcol.exporter.otlp.trace_write.input]
+  }
+}
+
+// OpenTelemetry exporter to Tempo
+otelcol.exporter.otlp "trace_write" {
+  client {
+    endpoint = "tempo.dms.dappnode:4317"
+    tls {
+      insecure = true
+    }
+  }
+}

docker-compose.yml

@@ -79,8 +79,35 @@ services:
     command: "-config.file=/etc/loki/local-config.yaml"
     restart: always
     image: loki.dms.dnp.dappnode.eth:1.0.1
+  alloy:
+    build:
+      context: alloy
+      args:
+        UPSTREAM_VERSION_ALLOY: v1.12.1
+    image: alloy.dms.dnp.dappnode.eth:1.0.0
+    restart: always
+    command:
+      - run
+      - --server.http.listen-addr=0.0.0.0:3000
+      - --storage.path=/var/lib/alloy/data
+      - /etc/alloy/config.alloy
+    volumes:
+      - alloy_data:/var/lib/alloy/data
+  tempo:
+    build:
+      context: tempo
+      args:
+        UPSTREAM_VERSION_TEMPO: 2.7.1
+    image: tempo.dms.dnp.dappnode.eth:1.0.0
+    restart: always
+    command:
+      - "-config.file=/etc/tempo/config.yaml"
+    volumes:
+      - tempo_data:/var/tempo
 volumes:
   grafana_data: {}
   prometheus_data: {}
   manager_data: {}
   prometheus_file_sd: {}
+  alloy_data: {}
+  tempo_data: {}

prometheus-targets.json

@@ -1,20 +1,26 @@
 [
-    {
-      "labels": {
-        "job": "nodeexporter"
-      },
-      "targets": ["node-exporter.dms.dappnode:9100"]
+  {
+    "labels": {
+      "job": "nodeexporter"
     },
-    {
-      "labels": {
-        "job": "cadvisor"
-      },
-      "targets": ["cadvisor.dms.dappnode:8080"]
+    "targets": ["node-exporter.dms.dappnode:9100"]
+  },
+  {
+    "labels": {
+      "job": "cadvisor"
     },
-    {
-      "labels": {
-        "job": "stakersmetrics"
-      },
-      "targets": ["stakers-metrics.dms.dappnode:9090"]
-    }
-  ]
+    "targets": ["cadvisor.dms.dappnode:8080"]
+  },
+  {
+    "labels": {
+      "job": "stakersmetrics"
+    },
+    "targets": ["stakers-metrics.dms.dappnode:9090"]
+  },
+  {
+    "labels": {
+      "job": "alloy"
+    },
+    "targets": ["alloy.dms.dappnode:3000"]
+  }
+]

tempo/Dockerfile

@@ -0,0 +1,3 @@
+ARG UPSTREAM_VERSION_TEMPO=2.7.1
+FROM grafana/tempo:${UPSTREAM_VERSION_TEMPO}
+COPY tempo.yaml /etc/tempo/config.yaml

tempo/tempo.yaml

@@ -0,0 +1,55 @@
+stream_over_http_enabled: true
+server:
+  http_listen_port: 3200
+  log_level: info
+
+query_frontend:
+  search:
+    duration_slo: 5s
+    throughput_bytes_slo: 1.073741824e+09
+    metadata_slo:
+      duration_slo: 5s
+      throughput_bytes_slo: 1.073741824e+09
+  trace_by_id:
+    duration_slo: 5s
+
+distributor:
+  receivers:
+    otlp:
+      protocols:
+        grpc:
+          endpoint: "0.0.0.0:4317"
+
+ingester:
+  max_block_duration: 5m # cut the headblock when this much time passes. this is being set for demo purposes and should probably be left alone normally
+
+compactor:
+  compaction:
+    block_retention: 1h # overall Tempo trace retention. set for demo purposes
+
+metrics_generator:
+  registry:
+    external_labels:
+      source: tempo
+      cluster: docker-compose
+  storage:
+    path: /var/tempo/generator/wal
+    remote_write:
+      - url: http://prometheus.dms.dappnode:9090/api/v1/write
+        send_exemplars: true
+  traces_storage:
+    path: /var/tempo/generator/traces
+
+storage:
+  trace:
+    backend: local # backend configuration to use
+    wal:
+      path: /var/tempo/wal # where to store the wal locally
+    local:
+      path: /var/tempo/blocks
+
+overrides:
+  defaults:
+    metrics_generator:
+      processors: [service-graphs, span-metrics, local-blocks] # enables metrics generator
+      generate_native_histograms: both