node-postgres supports TLL/SSL connections to your PostgreSQL server as long as the server is configured to support it. When instantiating a pool or a query you can provide an ssl property on the config object and it will be passed to the constructor for the node TLSSocket.

Self-signed cert

Here's an example of a configuration you can use to connect a client or a pool to a PostgreSQL server.

const config = {
database: 'database-name',
host: 'host-or-ip',
// this object will be passed to the TLSSocket constructor
ssl: {
rejectUnauthorized: false,
ca: fs.readFileSync('/path/to/server-certificates/root.crt').toString(),
key: fs.readFileSync('/path/to/client-key/postgresql.key').toString(),
cert: fs.readFileSync('/path/to/client-certificates/postgresql.crt').toString(),
},
}
import { Client, Pool } from 'pg'
const client = new Client(config)
client.connect(err => {
if (err) {
console.error('error connecting', err.stack)
} else {
console.log('connected')
client.end()
}
})
const pool = new Pool(config)
pool
.connect()
.then(client => {
console.log('connected')
client.release()
})
.catch(err => console.error('error connecting', err.stack))
.then(() => pool.end())