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.

Rebuild Microservices docker images

Refer Build Document for build instruction.