LB4 with [email protected] causing SSL Error

Bắt đầu với constructor ProductSelectionApplication được dán vào và cấu hình datasource sử dụng [email protected]. Tái hiện lỗi SSL trong quá trình triển khai IBM Cloud Kubernetes đồng thời so sánh với môi trường cục bộ, sau đó kiểm tra cách connector xử lý PostgreSQL và SSL. Công việc được coi là hoàn tất khi nguyên nhân được xác định và một cấu hình hoặc bản sửa connector được tài liệu hóa, kiểm thử có thể giải quyết lỗi certificate-chain.

I kept getting the same error in LB4 even using the right syntax below and right version of [email protected] after I deploy it to IBM Cloud Kubenetes, it runs without any issues on my local.

import {BootMixin} from '@loopback/boot';
import {ApplicationConfig} from '@loopback/core';
import {RepositoryMixin} from '@loopback/repository';
import {RestApplication} from '@loopback/rest';
import {
RestExplorerBindings,
RestExplorerComponent
} from '@loopback/rest-explorer';
import {ServiceMixin} from '@loopback/service-proxy';
import fs from 'fs';
import path from 'path';
import {ProductSelectionDataSource} from './datasources';
import {MySequence} from './sequence';
export {ApplicationConfig};

export class ProductSelectionApplication extends BootMixin(
ServiceMixin(RepositoryMixin(RestApplication)),
) {
constructor(options: ApplicationConfig = {}) {
super(options);

//process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = '0';
console.log("__dirname: " + __dirname);
console.log("*********************************************************************************");
const crtpath = path.join(__dirname, '../private/ca.crt');
console.log("crtpath:" + crtpath);
console.log("content of crt:  " + fs.readFileSync(crtpath).toString());

console.log("*********************************************************************************");
const keypath = path.join(__dirname, '../private/ca.key');
console.log("keypath:" + keypath);
console.log("content of key:  " + fs.readFileSync(keypath).toString());

console.log("*********************************************************************************");
var dbcert = process.env.DB_CERT;
let dbCert = Buffer.from(`{dbcert}`, 'base64');
console.log("content of dbcert: " + dbCert);

console.log("*********************************************************************************");

this.bind('datasources.config.productSelection').to({
  name: 'dbname',
  connector: 'postgresql',
  url: process.env.DB_CONNECTION_STRING,
  ssl: {
    ca: fs.readFileSync(crtpath).toString(),
    key: fs.readFileSync(keypath).toString(),
    cert: dbCert,
    rejectUnauthorized: false,
  },
});
this.bind('datasources.productSelection').toClass(ProductSelectionDataSource);

// Set up the custom sequence
this.sequence(MySequence);

// Set up default home page
this.static('/', path.join(__dirname, '../public'));

// Customize @loopback/rest-explorer configuration here
this.configure(RestExplorerBindings.COMPONENT).to({
  path: '/explorer',
});
this.component(RestExplorerComponent);

this.projectRoot = __dirname;
// Customize @loopback/boot Booter Conventions here
this.bootOptions = {
  controllers: {
    // Customize ControllerBooter Conventions here
    dirs: ['controllers'],
    extensions: ['.controller.js'],
    nested: true,
  },
};

}
}

The error I got:

Node ENV: dev
Server is running at http://127.0.0.1:3000
Try http://127.0.0.1:3000/ping
Connection fails: Error: self signed certificate in certificate chain
It will be retried for the next request.
_tls_wrap.js:1497

Error: self signed certificate in certificate chain
at TLSSocket.onConnectSecure (_tls_wrap.js:1497:34)
at TLSSocket.emit (events.js:315:20)
at TLSSocket._finishInit (_tls_wrap.js:932:8)
at TLSWrap.ssl.onhandshakedone (_tls_wrap.js:706:12)
at TLSWrap.callbackTrampoline (internal/async_hooks.js:131:14)

I tried to use old version of [email protected] but it seems the latest version of LB4 doesn't like it. the LB4 version list below:
$ lb4 -v
@loopback/cli version: 2.20.0

@loopback/* dependencies:

• @loopback/authentication: ^7.1.0
• @loopback/boot: ^3.3.0
• @loopback/build: ^6.3.0
• @loopback/context: ^3.15.0
• @loopback/core: ^2.15.0
• @loopback/metadata: ^3.2.0
• @loopback/openapi-spec-builder: ^3.1.0
• @loopback/openapi-v3: ^5.2.0
• @loopback/repository-json-schema: ^3.3.0
• @loopback/repository: ^3.5.0
• @loopback/rest: ^9.2.0
• @loopback/testlab: ^3.3.0
• @loopback/docs: ^3.23.0
• @loopback/example-hello-world: ^2.2.0
• @loopback/example-log-extension: ^2.2.0
• @loopback/example-rpc-server: ^2.2.0
• @loopback/example-todo: ^3.10.0
• @loopback/example-soap-calculator: ^2.5.0
• @loopback/service-proxy: ^3.1.0
• @loopback/http-caching-proxy: ^2.2.0
• @loopback/http-server: ^2.4.0
• @loopback/example-todo-list: ^3.8.0
• @loopback/dist-util: ^0.4.0
• @loopback/rest-explorer: ^3.2.0
• @loopback/eslint-config: ^10.1.0
• @loopback/example-express-composition: ^2.6.0
• @loopback/example-greeter-extension: ^2.2.0
• @loopback/booter-lb3app: ^2.3.0
• @loopback/example-lb3-application: ^2.6.0
• @loopback/example-greeting-app: ^2.3.0
• @loopback/example-context: ^2.2.0
• @loopback/repository-tests: ^0.17.0
• @loopback/health: ^0.7.0
• @loopback/authorization: ^0.8.0
• @loopback/rest-crud: ^0.9.0
• @loopback/security: ^0.4.0
• @loopback/authentication-passport: ^3.1.0
• @loopback/example-metrics-prometheus: ^0.5.0
• @loopback/metrics: ^0.7.0
• @loopback/model-api-builder: ^2.2.0
• @loopback/logging: ^0.5.0
• @loopback/example-access-control-migration: ^2.4.0
• @loopback/example-file-transfer: ^1.6.0
• @loopback/example-rest-crud: ^1.8.0
• @loopback/apiconnect: ^0.6.0
• @loopback/example-validation-app: ^1.9.0
• @loopback/cron: ^0.4.0
• @loopback/example-multi-tenancy: ^0.8.0
• @loopback/example-passport-login: ^1.10.0
• @loopback/authentication-jwt: ^0.8.0
• @loopback/context-explorer: ^0.4.0
• @loopback/express: ^3.2.0
• @loopback/example-todo-jwt: ^1.5.0
• @loopback/mock-oauth2-provider: ^0.2.0
• @loopback/pooling: ^0.4.0
• @loopback/typeorm: ^0.3.0
• @loopback/example-graphql: ^0.2.0
• @loopback/graphql: ^0.3.0
• @loopback/filter: ^1.4.0
• @loopback/rest-msgpack: ^0.4.0
• @loopback/example-binding-resolution: ^0.2.0
• @loopback/example-webpack: ^0.3.0
• @loopback/example-socketio: ^0.2.0
• @loopback/socketio: ^0.2.0
• @loopback/monorepo: ^0.2.0
• @loopback/tsdocs: ^2.5.0

Please advise and thank you so much.