Cloud Native sample microservices showcasing Full Stack Observability using AppDynamics and ThousandEyes

Cloud Native Sample Bookinfo App Observability

Bookinfo is a sample application composed of four Microservices written in different languages. Application is originally created by as part of Istio project to demonstrate various Istio features, See https://istio.io/docs/examples/bookinfo/.

Project extends this sample application to demonstrate observability of Cloud Native application using Cisco AppDynamics and ThousandEyes. Microservices code and docker images area extended to include respective AppDynamics agents that enables Application Performance Monitoring for these microservices. ThousandEyes Web App monitoring is also configured, that helps understand understand how HTTP, page load and transaction performance is affected by the network, and how it stacks up against other similar services.

Architecture

Sample book info application is created using 4 polygot microservices & can be deployed on kubernetes cluster.

Microservice details

Full Stack Observability are enabled for this application (composed of microservices) that monitors user experience, business transaction, container, virtual machine, Kubernetes container orchestrator etc. Each Microservices is instrumented with respective language AppDynamics agent to enable application monitoring data. In addition to this AppD cluster agent for Kubernetes is also setup too to monitor health of Kubernetes and collect metrics and metadata for entire cluster, including every node and container.

For ProductPage web endpoints the HTTP monitor are added to ThousandEyes that can monitor Response time, Availability and Throughput from multiple from different geographic location in world.

Setup Application

1. Pre-requisite

• Access to working kubernetes cluster and local kubectl cli. Docker desktop kubernetes, Minikube or kind are some of popular options to setup local kubernetes cluster.
• Trial account for AppDynamics
• Trial account for ThousandEyes

2. Clone the code to local laptop

   git clone https://github.com/CiscoDevNet/bookinfo-cloudnative-sample
   

3. Get Access Key and account details from AppDynamics

4. Update Access Keys and deploy microservices pods

i. Modify access-key (base64 encoded), APPDYNAMICS_AGENT_ACCOUNT_NAME (account_name) and APPDYNAMICS_CONTROLLER_HOST_NAME in field

   echo -n <access-key> | base64 - 
   vi platform/kube/appd.yaml

ii. Upload Secret

   kubectl apply -f platform/kube/appd.yaml

iii. Deploy microservice pods & created services

   kubectl apply -f platform/kube/bookinfo.yaml

iv. Expose service to internet If your cluster have ingress with public internet domain configured use same.

Alternative option is to expose service using ngork. Service needs to exposed so that ThousandEye can test app. NOTE: This is will expose your app to world so please read yourself aware of ngrok.

   kubectl run --restart=Never   -t -i --rm   ngrok --image=gcr.io/kuar-demo/ngrok   -- http productpage:9080

5. Access app, browse various page & login using 'demo' and 'demo' cred.

   This will start sending metrics to AppdAccount

6. Check Application and Infra monitoring details in AppDynamics account

7. Register Web Test on ThousandEyes

AppDynamic Agents Instrumentation of Microservices

1. Python agent for 'Product Page'

   AppDynamics Agent for Python is installed using pip package via requirements.txt

2. Ruby agent for 'Details Service'

   AppDynamics Agent for Ruby is installed using Gemfile

3. Java agent for 'Review' Service

   AppDynamics agent for Java is inserted using init-container.

         initContainers:
        - command:
            - cp
            - -r
            - /opt/appdynamics/.
            - /opt/temp
          name: appd-agent
          image: docker.io/appdynamics/java-agent:20.8.0
          volumeMounts:
            - mountPath: /opt/temp
              name: appd-agent-repo
   

4. NodeJS 'Rating' Service AppDynamics agent for NodeJS are installed using npm install in package.json

5. Agent configuration are set for following AppDynamics agents configuration Best Practices in kubernetes refer appd.yaml and bookinfo.yaml for details.

GitHub

https://github.com/CiscoDevNet/bookinfo-cloudnative-sample