Introduction to node-vault

Node-vault is a client for HashiCorp’s Vault, a tool to manage secrets and protect sensitive data. This powerful library allows seamless interaction with the Vault HTTP API to read, write, and control access to secrets.

Getting Started with node-vault

Install the node-vault package using npm:

  
    npm install node-vault
  

Examples of Using node-vault API

Here are some practical examples of how to use the node-vault API.

Authentication

Authenticate with Vault using the token:

  
    const vault = require('node-vault')();
    vault.token = 'your-vault-token';
  

Reading a Secret

Read a secret stored in Vault:

  
    vault.read('secret/data/my-secret').then((result) => {
      console.log(result.data);
    }).catch(console.error);
  

Writing a Secret

Write a secret to Vault:

  
    const secretData = { value: 'my-secret-value', ttl: 3600 };
    vault.write('secret/data/my-secret', secretData).then((result) => {
      console.log(result);
    }).catch(console.error);
  

Listing Secrets

List secrets in a specific path:

  
    vault.list('secret/metadata').then((result) => {
      console.log(result.data.keys);
    }).catch(console.error);
  

Deleting a Secret

Delete a secret from Vault:

  
    vault.delete('secret/data/my-secret').then((result) => {
      console.log(result);
    }).catch(console.error);
  

Using node-vault in a Node.js Application

Below is an example of using node-vault in a simple Node.js application:

  
    const express = require('express');
    const vault = require('node-vault')();
    vault.token = 'your-vault-token';

    const app = express();

    app.get('/get-secret', (req, res) => {
      vault.read('secret/data/my-secret').then((result) => {
        res.json(result.data);
      }).catch((err) => {
        res.status(500).send(err.message);
      });
    });

    app.listen(3000, () => {
      console.log('Server running on port 3000');
    });
  

Conclusion

The node-vault library provides powerful tools to interact with HashiCorp Vault in Node.js applications. This library is essential for managing secrets and ensuring the security of sensitive data within your applications.

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