A Node.js script for creating Base64 encoded configMaps (secrets) from existing .env file (for Kubernetes)

k8s-env-generator.js

const fs = require('fs');
const path = require('path');
const yaml = require('yaml');
const envFilePath = path.resolve(__dirname, '.env');
const destYamlPath = path.resolve(__dirname, 'my-secrets.yml');

const data = fs
  .readFileSync(envFilePath, 'utf-8')
  .split('\n')
  .filter(i => !i.startsWith('#'))
  .reduce((acc, cur) => {
    const propertyKey = cur.substr(0, cur.indexOf('='));
    const propertyValue = cur.substr(cur.indexOf('=') + 1, cur.length);
    acc[propertyKey] = Buffer.from(propertyValue).toString('base64');
    return acc;
  }, {});

// Create our YAML file.
const obj = {
  apiVersion: 'v1',
  kind: 'Secret',
  metadata: {
    name: 'my-secrets',
    namespace: 'my-namespace'
  },
  type: 'Opaque',
  data
};

fs.writeFileSync(destYamlPath, yaml.stringify(obj), 'utf-8');

process.exit(0);