clickhouse-install-auth

# ClickHouse Install & Auth ## Overview Set up the official ClickHouse client for Node.js or Python and configure authentication to ClickHouse Cloud or a self-hosted instance. ## Prerequisites - Node.js 18+ or Python 3.8+ - A running ClickHouse instance (Cloud or self-hosted) - Connection credentials (host, port, user, password) ## Instructions ### Step 1: Install the Official Client ```bash # Node.js — official client (HTTP-based, supports streaming) npm install @clickhouse/client # Python — official client pip install clickhouse-connect ``` ### Step 2: Configure Environment Variables ```bash # .env (NEVER commit — add to .gitignore) CLICKHOUSE_HOST=https://abc123.us-east-1.aws.clickhouse.cloud:8443 CLICKHOUSE_USER=default CLICKHOUSE_PASSWORD=your-password-here # Self-hosted (HTTP interface on port 8123, native on 9000) # CLICKHOUSE_HOST=http://localhost:8123 ``` ### Step 3: Create the Client (Node.js) ```typescript import { createClient } from '@clickhouse/client'; // ClickHouse Cloud const client = createClient({ url: process.env.CLICKHOUSE_HOST, // https://<host>:8443 username: process.env.CLICKHOUSE_USER, // default password: process.env.CLICKHOUSE_PASSWORD, // ClickHouse Cloud requires TLS — the client handles it via https:// URL }); // Self-hosted (no TLS) const localClient = createClient({ url: 'http://localhost:8123', username: 'default', password: '', }); ``` ### Step 4: Verify Connection ```typescript async function ve...