feat: added setup for production observability (metrics via OTEL)

.env.example

@@ -74,6 +74,14 @@ CAPTCHA_SECRET=
 
 NEXT_PUBLIC_CAPTCHA_SITE_KEY=
 
+OTEL_TELEMETRY_COLLECTION_ENABLED=
+OTEL_EXPORT_TYPE=
+OTEL_EXPORT_OTLP_ENDPOINT=
+OTEL_OTLP_PUSH_INTERVAL=
+
+OTEL_COLLECTOR_BASIC_AUTH_USERNAME=
+OTEL_COLLECTOR_BASIC_AUTH_PASSWORD=
+
 PLAIN_API_KEY=
 PLAIN_WISH_LABEL_IDS=
 

Makefile

@@ -10,6 +10,9 @@ up-dev:
 up-dev-ldap:
 	docker compose -f docker-compose.dev.yml --profile ldap up --build
 
+up-dev-metrics:
+	docker compose -f docker-compose.dev.yml --profile metrics up --build
+
 up-prod:
 	docker-compose -f docker-compose.prod.yml up --build
 
@@ -27,4 +30,3 @@ reviewable-api:
 	npm run type:check
 
 reviewable: reviewable-ui reviewable-api
-

backend/package.json

@@ -138,6 +138,14 @@
     "@octokit/plugin-retry": "^5.0.5",
     "@octokit/rest": "^20.0.2",
     "@octokit/webhooks-types": "^7.3.1",
+    "@opentelemetry/api": "^1.9.0",
+    "@opentelemetry/auto-instrumentations-node": "^0.53.0",
+    "@opentelemetry/exporter-metrics-otlp-proto": "^0.55.0",
+    "@opentelemetry/exporter-prometheus": "^0.55.0",
+    "@opentelemetry/instrumentation": "^0.55.0",
+    "@opentelemetry/resources": "^1.28.0",
+    "@opentelemetry/sdk-metrics": "^1.28.0",
+    "@opentelemetry/semantic-conventions": "^1.27.0",
     "@peculiar/asn1-schema": "^2.3.8",
     "@peculiar/x509": "^1.12.1",
     "@serdnam/pino-cloudwatch-transport": "^1.0.4",

backend/src/lib/config/env.ts

@@ -157,6 +157,15 @@ const envSchema = z
     INFISICAL_CLOUD: zodStrBool.default("false"),
     MAINTENANCE_MODE: zodStrBool.default("false"),
     CAPTCHA_SECRET: zpStr(z.string().optional()),
+
+    // TELEMETRY
+    OTEL_TELEMETRY_COLLECTION_ENABLED: zodStrBool.default("false"),
+    OTEL_EXPORT_OTLP_ENDPOINT: zpStr(z.string().optional()),
+    OTEL_OTLP_PUSH_INTERVAL: z.coerce.number().default(30000),
+    OTEL_COLLECTOR_BASIC_AUTH_USERNAME: zpStr(z.string().optional()),
+    OTEL_COLLECTOR_BASIC_AUTH_PASSWORD: zpStr(z.string().optional()),
+    OTEL_EXPORT_TYPE: z.enum(["prometheus", "otlp"]).optional(),
+
     PLAIN_API_KEY: zpStr(z.string().optional()),
     PLAIN_WISH_LABEL_IDS: zpStr(z.string().optional()),
     DISABLE_AUDIT_LOG_GENERATION: zodStrBool.default("false"),
@@ -203,11 +212,11 @@ let envCfg: Readonly<z.infer<typeof envSchema>>;
 
 export const getConfig = () => envCfg;
 // cannot import singleton logger directly as it needs config to load various transport
-export const initEnvConfig = (logger: Logger) => {
+export const initEnvConfig = (logger?: Logger) => {
   const parsedEnv = envSchema.safeParse(process.env);
   if (!parsedEnv.success) {
-    logger.error("Invalid environment variables. Check the error below");
-    logger.error(parsedEnv.error.issues);
+    (logger ?? console).error("Invalid environment variables. Check the error below");
+    (logger ?? console).error(parsedEnv.error.issues);
     process.exit(-1);
   }
 

backend/src/lib/telemetry/instrumentation.ts

@@ -0,0 +1,91 @@
+import opentelemetry, { diag, DiagConsoleLogger, DiagLogLevel } from "@opentelemetry/api";
+import { getNodeAutoInstrumentations } from "@opentelemetry/auto-instrumentations-node";
+import { OTLPMetricExporter } from "@opentelemetry/exporter-metrics-otlp-proto";
+import { PrometheusExporter } from "@opentelemetry/exporter-prometheus";
+import { registerInstrumentations } from "@opentelemetry/instrumentation";
+import { Resource } from "@opentelemetry/resources";
+import { AggregationTemporality, MeterProvider, PeriodicExportingMetricReader } from "@opentelemetry/sdk-metrics";
+import { ATTR_SERVICE_NAME, ATTR_SERVICE_VERSION } from "@opentelemetry/semantic-conventions";
+import dotenv from "dotenv";
+
+import { initEnvConfig } from "../config/env";
+
+dotenv.config();
+
+const initTelemetryInstrumentation = ({
+  exportType,
+  otlpURL,
+  otlpUser,
+  otlpPassword,
+  otlpPushInterval
+}: {
+  exportType?: string;
+  otlpURL?: string;
+  otlpUser?: string;
+  otlpPassword?: string;
+  otlpPushInterval?: number;
+}) => {
+  diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);
+
+  const resource = Resource.default().merge(
+    new Resource({
+      [ATTR_SERVICE_NAME]: "infisical-core",
+      [ATTR_SERVICE_VERSION]: "0.1.0"
+    })
+  );
+
+  const metricReaders = [];
+  switch (exportType) {
+    case "prometheus": {
+      const promExporter = new PrometheusExporter();
+      metricReaders.push(promExporter);
+      break;
+    }
+    case "otlp": {
+      const otlpExporter = new OTLPMetricExporter({
+        url: `${otlpURL}/v1/metrics`,
+        headers: {
+          Authorization: `Basic ${btoa(`${otlpUser}:${otlpPassword}`)}`
+        },
+        temporalityPreference: AggregationTemporality.DELTA
+      });
+      metricReaders.push(
+        new PeriodicExportingMetricReader({
+          exporter: otlpExporter,
+          exportIntervalMillis: otlpPushInterval
+        })
+      );
+      break;
+    }
+    default:
+      throw new Error("Invalid OTEL export type");
+  }
+
+  const meterProvider = new MeterProvider({
+    resource,
+    readers: metricReaders
+  });
+
+  opentelemetry.metrics.setGlobalMeterProvider(meterProvider);
+
+  registerInstrumentations({
+    instrumentations: [getNodeAutoInstrumentations()]
+  });
+};
+
+const setupTelemetry = () => {
+  const appCfg = initEnvConfig();
+
+  if (appCfg.OTEL_TELEMETRY_COLLECTION_ENABLED) {
+    console.log("Initializing telemetry instrumentation");
+    initTelemetryInstrumentation({
+      otlpURL: appCfg.OTEL_EXPORT_OTLP_ENDPOINT,
+      otlpUser: appCfg.OTEL_COLLECTOR_BASIC_AUTH_USERNAME,
+      otlpPassword: appCfg.OTEL_COLLECTOR_BASIC_AUTH_PASSWORD,
+      otlpPushInterval: appCfg.OTEL_OTLP_PUSH_INTERVAL,
+      exportType: appCfg.OTEL_EXPORT_TYPE
+    });
+  }
+};
+
+void setupTelemetry();

backend/src/main.ts

@@ -1,3 +1,5 @@
+import "./lib/telemetry/instrumentation";
+
 import dotenv from "dotenv";
 import path from "path";
 
@@ -18,6 +20,7 @@ dotenv.config();
 const run = async () => {
   const logger = await initLogger();
   const appCfg = initEnvConfig(logger);
+
   const db = initDbConnection({
     dbConnectionUri: appCfg.DB_CONNECTION_URI,
     dbRootCert: appCfg.DB_ROOT_CERT,

backend/src/server/app.ts

@@ -22,6 +22,7 @@ import { TSmtpService } from "@app/services/smtp/smtp-service";
 
 import { globalRateLimiterCfg } from "./config/rateLimiter";
 import { addErrorsToResponseSchemas } from "./plugins/add-errors-to-response-schemas";
+import { apiMetrics } from "./plugins/api-metrics";
 import { fastifyErrHandler } from "./plugins/error-handler";
 import { registerExternalNextjs } from "./plugins/external-nextjs";
 import { serializerCompiler, validatorCompiler, ZodTypeProvider } from "./plugins/fastify-zod";
@@ -86,6 +87,10 @@ export const main = async ({ db, hsmModule, auditLogDb, smtp, logger, queue, key
     // pull ip based on various proxy headers
     await server.register(fastifyIp);
 
+    if (appCfg.OTEL_TELEMETRY_COLLECTION_ENABLED) {
+      await server.register(apiMetrics);
+    }
+
     await server.register(fastifySwagger);
     await server.register(fastifyFormBody);
     await server.register(fastifyErrHandler);

backend/src/server/plugins/api-metrics.ts

@@ -0,0 +1,21 @@
+import opentelemetry from "@opentelemetry/api";
+import fp from "fastify-plugin";
+
+export const apiMetrics = fp(async (fastify) => {
+  const apiMeter = opentelemetry.metrics.getMeter("API");
+  const latencyHistogram = apiMeter.createHistogram("API_latency", {
+    unit: "ms"
+  });
+
+  fastify.addHook("onResponse", async (request, reply) => {
+    const { method } = request;
+    const route = request.routerPath;
+    const { statusCode } = reply;
+
+    latencyHistogram.record(reply.elapsedTime, {
+      route,
+      method,
+      statusCode
+    });
+  });
+});

docker-compose.dev.yml

@@ -86,6 +86,7 @@ services:
       - .env
     ports:
       - 4000:4000
+      - 9464:9464 # for OTEL collection of Prometheus metrics
     environment:
       - NODE_ENV=development
       - DB_CONNECTION_URI=postgres://infisical:infisical@db/infisical?sslmode=disable
@@ -95,6 +96,42 @@ services:
     extra_hosts:
       - "host.docker.internal:host-gateway"
 
+  prometheus:
+    image: prom/prometheus
+    volumes:
+      - ./prometheus.dev.yml:/etc/prometheus/prometheus.yml
+    ports:
+      - "9090:9090"
+    command:
+      - "--config.file=/etc/prometheus/prometheus.yml"
+    profiles: [metrics]
+
+  otel-collector:
+    image: otel/opentelemetry-collector-contrib
+    volumes:
+      - ./otel-collector-config.yaml:/etc/otelcol-contrib/config.yaml
+    ports:
+      - 1888:1888 # pprof extension
+      - 8888:8888 # Prometheus metrics exposed by the Collector
+      - 8889:8889 # Prometheus exporter metrics
+      - 13133:13133 # health_check extension
+      - 4317:4317 # OTLP gRPC receiver
+      - 4318:4318 # OTLP http receiver
+      - 55679:55679 # zpages extension
+    profiles: [metrics-otel]
+
+  grafana:
+    image: grafana/grafana
+    container_name: grafana
+    restart: unless-stopped
+    environment:
+      - GF_LOG_LEVEL=debug
+    ports:
+      - "3005:3000"
+    volumes:
+      - "grafana_storage:/var/lib/grafana"
+    profiles: [metrics]
+
   frontend:
     container_name: infisical-dev-frontend
     restart: unless-stopped
@@ -166,3 +203,4 @@ volumes:
     driver: local
   ldap_data:
   ldap_config:
+  grafana_storage:

docs/self-hosting/configuration/envars.mdx

@@ -30,7 +30,8 @@ Used to configure platform-specific security and operational settings
 </ParamField>
 
 <ParamField query="TELEMETRY_ENABLED" type="string" default="true" optional>
-  Telemetry helps us improve Infisical but if you want to dsiable it you may set this to `false`.
+  Telemetry helps us improve Infisical but if you want to disable it you may set
+  this to `false`.
 </ParamField>
 
 ## Data Layer
@@ -65,8 +66,9 @@ DB_READ_REPLICAS=[{"DB_CONNECTION_URI":""}]
 	    Use the command below to encode your certificate:
       `echo "<certificate>" | base64`
 
-			If not provided it will use master SSL certificate.
+    		If not provided it will use master SSL certificate.
     </ParamField>
+
   </Expandable>
 </ParamField>
 
@@ -350,8 +352,9 @@ Optional (for TLS/SSL):
 
 TLS: Available on the same ports (2525, 80, 25, 8025, or 587)
 SSL: Available on ports 465, 8465, and 443
+
 </Note>
-</Accordion> 
+</Accordion>
 
 ## Authentication
 
@@ -518,3 +521,36 @@ To help you sync secrets from Infisical to services such as Github and Gitlab, I
     OAuth2 client secret for Gitlab integration
   </ParamField>
 </Accordion>
+
+## Observability
+
+You can configure Infisical to collect and expose telemetry data for analytics and monitoring.
+
+<ParamField
+  query="OTEL_TELEMETRY_COLLECTION_ENABLED"
+  type="string"
+  default="false"
+>
+  Whether or not to collect and expose telemetry data.
+</ParamField>
+
+<ParamField query="OTEL_EXPORT_TYPE" type="enum" optional>
+  Supported types are `prometheus` and `otlp`.
+
+If export type is set to `prometheus`, metric data will be exposed in port 9464 in the `/metrics` path.
+
+If export type is set to `otlp`, you will have to configure a value for `OTEL_EXPORT_OTLP_ENDPOINT`.
+
+</ParamField>
+
+<ParamField query="OTEL_EXPORT_OTLP_ENDPOINT" type="string">
+  Where telemetry data would be pushed to for collection. This is only
+  applicable when `OTEL_EXPORT_TYPE` is set to `otlp`.
+</ParamField>
+
+<ParamField query="OTEL_COLLECTOR_BASIC_AUTH_USERNAME" type="string">
+  The username for authenticating with the telemetry collector.
+</ParamField>
+<ParamField query="OTEL_COLLECTOR_BASIC_AUTH_PASSWORD" type="string">
+  The password for authenticating with the telemetry collector.
+</ParamField>

otel-collector-config.yaml

@@ -0,0 +1,45 @@
+extensions:
+  health_check:
+  pprof:
+  zpages:
+  basicauth/server:
+    htpasswd:
+      inline: |
+        infisical:infisical
+
+receivers:
+  otlp:
+    protocols:
+      http:
+        endpoint: 0.0.0.0:4318
+        auth:
+          authenticator: basicauth/server
+
+  prometheus:
+    config:
+      scrape_configs:
+        - job_name: otel-collector
+          scrape_interval: 30s
+          static_configs:
+            - targets: [backend:9464]
+          metric_relabel_configs:
+            - action: labeldrop
+              regex: "service_instance_id|service_name"
+processors:
+  batch:
+
+exporters:
+  prometheus:
+    endpoint: "0.0.0.0:8889"
+    auth:
+      authenticator: basicauth/server
+    resource_to_telemetry_conversion:
+      enabled: true
+
+service:
+  extensions: [basicauth/server, health_check, pprof, zpages]
+  pipelines:
+    metrics:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [prometheus]

prometheus.dev.yml

@@ -0,0 +1,5 @@
+scrape_configs:
+  - job_name: "metric-collector"
+    scrape_interval: 30s
+    static_configs:
+      - targets: ["backend:9464"]