• Create K3s cluster : not documented yet
• Install kubectl on local linux
• Configure local linux environment to use K3s
• Install argocd on k3s cluster
• Prepare the first gitops project
  • create gitops git repository
  • deploy first gitops project
  • create first app git repository
  • add app to gitops project
• Further to know

Install kubectl

kubectl can be installed as a single binary. So, user can install in ~/bin directory

cd Downloads
curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.35.3/2026-04-08/bin/darwin/amd64/kubectl
cp kubectl ~/bin/
chmod +x ~/bin/kubectl
kubectl version

Configure kubectl to k3s

Copy the configuration from k3s to local kube config

When using vscode as a IDE and the framework is serverless-offline.
If you try to debug typescript code with breakpoint, it may not work properly.

TL; DR;

Set up serverless-esbuild configuration in serverless.yml

custom:
  esbuild:
    bundle: true
    platform: node
    target: node18
    sourcemap: true          # THIS WILL MAKE THE BREAKPOINTS ON TS FILE WORK
    sourcesContent: true
    keepNames: true

Detailed Configuration

• IDE: vscode
• Framework: serverless
• Local runtime: serverless-offline
  • Run local debug server with
    bash

    sls offline

• Development language: typescript
• Build with: serverless-esbuild

In normal case, any node process can be debugged with vscode with JavaScript Debug Terminal. but, when running sls offline, it seems the debugger session is attached to the process but the breakpoints are not working. After several googling, there were try launch.json configuration, use SLS_DEBUG and etc.

• What I first wanted : I want to use Telegram and WhatsApp as order notification channel

Set up the first project

• Originally, I used to use plain Lambda function. This time I will try express(https://expressjs.com/) + serverless lambda

  • serverless yaml : I uses httpApi integration
    yaml

    functions:
      api:
        handler: src/index.handler
        events:
          - httpApi: '*'

  • index.ts snippet
    javascript

    const express = require("express");
    const serverless = require("serverless-http");
    
    const app = express();
    
    app.use(express.json());
    app.use(express.urlencoded({ extended: true }));
    
    app.use('/telegram', require('./telegram/route')); // Use the routes
    app.use('/twilio', require('./twilio/route')); // Use the routes
    
    // module.exports.handler = serverless(app);
    module.exports = {
      handler: serverless(app),
      app,
    }

• Set up the React frontend

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