Observability otel demo

config/playground/demo/observability/otel_demo/README.md

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+# Opensearch OTEL Demo Architecture
+This document will review the OpenSearch architecture for the [OTEL demo](https://opentelemetry.io/docs/demo/) and will review how to use the new Observability capabilities
+implemented into OpenSearch.
+---
+This diagram provides an overview of the system components, showcasing the configuration derived from the OpenTelemetry Collector (otelcol) configuration file utilized by the OpenTelemetry demo application.
+
+Additionally, it highlights the observability data (traces and metrics) flow within the system.
+
+![](img/otelcol-data-flow-overview.png)
+
+---
+[OTEL DEMO](https://opentelemetry.io/docs/demo/architecture/) Describes the list of services that are composing the Astronomy Shop.
+
+They are combined of:
+ - [Accounting](https://opentelemetry.io/docs/demo/services/accounting/)
+ - [Ad](https://opentelemetry.io/docs/demo/services/ad/)
+ - [Cart](https://opentelemetry.io/docs/demo/services/cart/)
+ - [Checkout](https://opentelemetry.io/docs/demo/services/checkout/)
+ - [Currency](https://opentelemetry.io/docs/demo/services/currency/)
+ - [Email](https://opentelemetry.io/docs/demo/services/email/)
+ - [Feature Flag](https://opentelemetry.io/docs/demo/services/feature-flag/)
+ - [Fraud Detection](https://opentelemetry.io/docs/demo/services/fraud-detection/)
+ - [Frontend](https://opentelemetry.io/docs/demo/services/frontend/)
+ - [Kafka](https://opentelemetry.io/docs/demo/services/kafka/)
+ - [Payment](https://opentelemetry.io/docs/demo/services/payment/)
+ - [Product Catalog](https://opentelemetry.io/docs/demo/services/product-catalog/)
+ - [Quote](https://opentelemetry.io/docs/demo/services/quote/)
+ - [Recommendation](https://opentelemetry.io/docs/demo/services/recommendation/)
+ - [Shipping](https://opentelemetry.io/docs/demo/services/shipping/)
+ - [Fluent-Bit]() *(Nginx's otel log exported)* 
+ - [Integrations]() *(Pre-canned OpenSearch assets)* 
+ - [DataPrepper]() *(OpenSearch's ingestion pipeline)*
+
+Backend supportive services
+ - [Load Generator]()
+   - See [description]()
+ - [Frontend Nginx Proxy]() *(Replacement for _Frontend-Proxy_)*
+ - [OpenSearch]()
+ - [Dashboards]()
+ - [Prometheus]()
+ - [Feature-Flag]()
+
+### Services Topology
+The next diagram shows the docker compose services dependencies
+
+![](img/docker-services-topology.png)
+---
+
+## Purpose
+The purpose of this demo is to demonstrate the different capabilities of OpenSearch Observability to investigate and reflect your system.
+
+### Ingestion 
+The ingestion capabilities for OpenSearch is to be able to support multiple pipelines:
+  - [Data-Prepper](https://github.com/opensearch-project/data-prepper/) is an OpenSearch ingestion project that allows ingestion of OTEL standard signals using Otel-Collector
+  - [Jaeger](https://opensearch.org/docs/latest/observing-your-data/trace/trace-analytics-jaeger/) is an ingestion framework which has a build in capability for pushing OTEL signals into OpenSearch
+  - [Fluent-Bit](https://docs.fluentbit.io/manual/pipeline/outputs/opensearch) is an ingestion framework which has a build in capability for pushing OTEL signals into OpenSearch
+
+### Integrations -
+The integration service is a list of pre-canned assets that are loaded in a combined manner to allow users the ability for simple and automatic way to discover and review their services topology.
+
+These (demo-sample) integrations contain the following assets:
+ - components & index template mapping
+ - datasources 
+ - data-stream & indices
+ - queries
+ - dashboards
+
+Once they are loaded, the user can imminently review the OTEL demo services and dashboards that reflect the system state.
+ - [Nginx Dashboard]() - reflects the Nginx Proxy server that routes all the network communication to/from the frontend
+ - [Prometheus datasource]() - reflects the connectivity to the prometheus metric storage that allows us to federate metrics analytics queries
+ - [Logs Datastream]() - reflects the data-stream used by nginx logs ingestion and dashboards representing a well-structured [log schema](../src/integrations/mapping-templates/logs.mapping)
+
+Once these assets are loaded - the user can start reviewing its Observability dashboards and traces
+
+![Nginx Dashboard](img/nginx_dashboard.png)
+
+![Prometheus Metrics](img/prometheus_federated_metrics.png)
+
+![Trace Analytics](img/trace_analytics.png)
+
+![Service Maps](img/services.png)
+
+![Traces](img/traces.png)
+
+![ServiceGraph](img/service-graph.png)
+---
+
+### **Scenarios**
+
+How can you solve problems with OpenTelemetry? These scenarios walk you through some pre-configured problems and show you how to interpret OpenTelemetry data to solve them.
+
+- Generate a Product Catalog error for GetProduct requests with product id: OLJCESPC7Z using the Feature Flag service
+- Discover a memory leak and diagnose it using metrics and traces. Read more
+
+### **Reference**
+Project reference documentation, like requirements and feature matrices [here](https://opentelemetry.io/docs/demo/#reference)
+

config/playground/demo/observability/otel_demo/data-prepper.yaml

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+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+---
+# Data Prepper Deployment
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: data-prepper
+  namespace: otel-demo
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: data-prepper
+  template:
+    metadata:
+      labels:
+        app: data-prepper
+    spec:
+      containers:
+        - name: data-prepper
+          image: opensearchproject/data-prepper:latest
+          ports:
+            - containerPort: 21890
+          volumeMounts:
+            - name: config-volume
+              mountPath: /usr/share/data-prepper/pipelines/pipelines.yaml
+              subPath: pipelines.yaml
+            - name: config-volume
+              mountPath: /usr/share/data-prepper/config/data-prepper-config.yaml
+              subPath: data-prepper-config.yaml
+      volumes:
+        - name: config-volume
+          configMap:
+            name: data-prepper-config
+      restartPolicy: Always
+---
+# Data Prepper config-map
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: data-prepper-config
+  namespace: otel-demo
+data:
+  trace_analytics_no_ssl_2x.yml: |
+    entry-pipeline:
+      delay: "100"
+      source:
+        otel_trace_source:
+          ssl: false
+      sink:
+        - pipeline:
+            name: "raw-pipeline"
+        - pipeline:
+            name: "service-map-pipeline"
+    raw-pipeline:
+      source:
+        pipeline:
+          name: "entry-pipeline"
+      processor:
+        - otel_trace_raw:
+      sink:
+        - opensearch:
+            hosts: [ "https://opensearch-cluster-leader.default.svc:9200" ]
+            insecure: true
+            username: "{USR}"
+            password: "{PSWD}"
+            index_type: trace-analytics-raw
+    service-map-pipeline:
+      delay: "100"
+      source:
+        pipeline:
+          name: "entry-pipeline"
+      processor:
+        - service_map_stateful:
+      sink:
+        - opensearch:
+            hosts: [ "https://opensearch-cluster-leader.default.svc:9200" ]
+            insecure: true
+            username: "{USR}"
+            password: "{PSWD}"
+            index_type: trace-analytics-service-map
+  pipelines.yaml: |
+    ssl: false
+---
+# Data Prepper Service
+apiVersion: v1
+kind: Service
+metadata:
+  name: data-prepper-service
+  namespace: otel-demo
+spec:
+  selector:
+    app: data-prepper
+  ports:
+    - protocol: TCP
+      port: 21890
+      targetPort: 21890