HB Case Study

Overview

HB Case Study

Envoy Logo

Envoy Proxy

  • It is a modern Layer7(App) and Layer3(TCP) proxy
  • Incredibly modernized version of reverse proxies like NGINX, HAProxy
  • It is used in many projects: Istio service mash, API gateway products, etc.
  • Interesting part: Programming via API instead of file (xDS protocol)
  • Developed by Matt Klein at Lyft
  • Donated to CNCF(Kubernetes, gRPC, etc.) It graduated from there.
  • Those who integrate Envoy into their infrastructure: Google, AWS, etc.
  • It has support for Wire protocols(Redis, Memcached, MySQL, MongoDB, etc.)
  • RPC level LB instead of connection-level LB

Telemetry/Observability Properties

  • Metrics(L7 HTTP metrics)
    • Request count
    • Latency
    • Error rate
    • Status code
    • Bytes received/sent
    • Envoy's own metrics(CPU/Memory, TCP connection, Bytes, Bandwidth, QPS)
  • Distributed Tracing
    • A monitoring method that shows how long the RPCs between microservices keep and where they go.
    • Add TRACING HEADER if missing in incoming requests
    • Upload TRACEs to a certain location for requests coming to the server
      • Request In TRACE ID, start, end(Response)

Architecture

Architecture

API Reference

Get service

  GET /service/${id}
Parameter Type Description
id string Required. Id of item to fetch

Example Response

{
  "hostname": "fc4a73df5ae8",
  "ip": "172.20.0.5",
  "serviceid": "1",
  "success": true,
  "time": "2021-10-22 18:05:12"
}

Jenkins

CI/CD - Jenkins

The leading open source automation server, Jenkins provides hundreds of plugins to support building, deploying and automating any project.

GitHub Webhook

Jenkins

Jenkins trigger pipeline(Jenkinsfile):

pipeline {
    agent any
    stages {
        stage('build') {
            steps {
                sh "docker-compose build --pull"
            }
        }
        stage('deploy') {
            steps {
                sh "docker-compose up -d"
                sh "docker-compose scale service1=3 service2=3"
            }
        }
    }
}

Pipeline Dashboard

Jenkins

Console Output

Jenkins

Start all of our containers

docker-compose build --pull
docker-compose up -d
docker-compose scale service1=3 service2=3

Remove all containers & images

docker rm -vf $(docker ps -a -q)
docker rmi -f $(docker images -a -q)

References

🔗 Links

portfolio linkedin

Author

Owner
Ilker Ispir
I'm a software engineer with 2 years of software development experience in scalable architecture, microservices, user interfaces and cloud infrastructure.
Ilker Ispir
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