Node.js, PostgreSQL error: no pg_hba.conf entry for host

node.js Problem Overview

I am following this article ((http://nodeexamples.com/2012/09/21/connecting-to-a-postgresql-database-from-node-js-using-the-pg-module/). I have already deployed my app to heroku and currently using express, node.js, to try and connect to a PostgresSQL database in Heroku that I just installed. I get to the very end of the article and I use the command

node myfile.js

I get this error

error: no pg_hba.conf entry for host "...", user "...", database "...", ...

How do I go about creating one and where in my app directory should I put it?

Below is the entire error message. I changed the strings for IP address, user, and database but it looks basically just like it.

events.js:72
    throw er; // Unhandled 'error' event
          ^
error: no pg_hba.conf entry for host "00.000.000.00", user "username", database "databasename", SSL off
at Connection.parseE (/Users/user/workspace/MyApp/app/node_modules/pg/lib/connection.js:526:11)
at Connection.parseMessage (/Users/user/workspace/MyApp/app/node_modules/pg/lib/connection.js:356:17)
at Socket.<anonymous> (/Users/user/workspace/MyApp/app/node_modules/pg/lib/connection.js:105:22)
at Socket.emit (events.js:95:17)
at Socket.<anonymous> (_stream_readable.js:748:14)
at Socket.emit (events.js:92:17)
at emitReadable_ (_stream_readable.js:410:10)
at emitReadable (_stream_readable.js:406:5)
at readableAddChunk (_stream_readable.js:168:9)
at Socket.Readable.push (_stream_readable.js:130:10)

Edit: I did some more research and found that the 'pg_hba.conf' file is in my

/usr/local/var/postgres

and I added this line into the 'pg_hba.conf' file

# TYPE  DATABASE        USER            ADDRESS                 METHOD
 host   all             all                                     trust

also tried

# TYPE  DATABASE        USER            ADDRESS                 METHOD
host   all             all              0.0.0.0/0               md5

but it keeps saying there is no entry for my host, user, database, etc... is my 'pg_hba.conf' syntax wrong in any way?

node.js Solutions

Solution 1 - node.js

Change your connection code to use ssl. Following your linked example:

var conString = "pg://admin:guest@localhost:5432/Employees";
var client = new pg.Client(conString);
client.connect();

becomes:

var client = new pg.Client({
    user: "admin",
    password: "guest",
    database: "Employees",
    port: 5432,
    host: "localhost",
    ssl: true
}); 
client.connect();

https://github.com/brianc/node-postgres/wiki/Client#new-clientobject-config--client

Solution 2 - node.js

Running on heroku:

We ran into this error while upgrading the pg database on heroku from hobby tier to standard-0. SSL is required, but we didnt set it in our config.

Include in config when initialize new Sequelize(...)

"dialect": "postgres",
"dialectOptions": {
  "ssl": true
}

This trick was, that the ssl option is wrapped in dialectOptions. found here: https://github.com/sequelize/sequelize/issues/956#issuecomment-147745033

Info by @Atish: Use

options: { 
  dialect: "postgres",
  native: true, # adding this maybe breaks on hobby dyno
  ssl: true, 
  dialectOptions: {
    ssl: true
  }
}

Solution 3 - node.js

const sequelize = new Sequelize({
  database: "DB",
  username: "root",
  password: "pass",
  host: "localhost",
  port: 5432,
  dialect: "postgres",
  dialectOptions: {
    ssl: {
      require: true, // This will help you. But you will see nwe error
      rejectUnauthorized: false // This line will fix new error
    }
  },
});

Solution 4 - node.js

In the case sequelize ignores all of your efforts to turn ssl on, you can try to convince pg to enable ssl for all conncetions by default:

var pg = require('pg');
pg.defaults.ssl = true;

const Sequelize = require('sequelize');
const sequelize = new Sequelize('postgres://...');

Solution 5 - node.js

Adding ?ssl=true should work to the end of the uri.

var conString = "pg://admin:guest@localhost:5432/Employees?ssl=true";

Solution 6 - node.js

You can also use the ENVIRONMENT CONFIG VARIABLE 'PGSSLMODE' to 'require' via Heroku's web interface or CLI.

Case: Postgres dB set up as a Heroku add-on and attached to app on a Heroku Dyno.

Heroku provides some pretty good support on how to connect to one of its add-on databases; however, it unfortunately leaves out (or, I missed it) any mention of what do to enforce SSL since all Heroku dB tiers starting with Standard-0 enforces SSL by default.

Solution 7 - node.js

DialectOptions with SSL works, but you can also update the config var PGSSLMODE.

> Alternatively, you can omit the ssl configuration object if you > specify the PGSSLMODE config var: heroku config:set > PGSSLMODE=no-verify.

See Heroku guide

Heroku announced this SSL change on their changelog here

Solution 8 - node.js

What worked for me was a combination of above answers and a comment(from @schybo)

let cloud_config = {
  username: process.env.DB_USERNAME,
  database: process.env.DB_DATABASE,
  password: process.env.DB_PASSWORD,
  host: process.env.DB_HOSTNAME,
  port: 5432,
  ssl: true,
  dialect: 'postgres',
  dialectOptions: {
    "ssl": {"require":true }
  }
};

Use both ssl: true, and dialectOptions: { "ssl": {"require":true }}

Comment on Sequelize issue which is also added to the docs.

Solution 9 - node.js

While creating the pg client, this config fixed the issue for me. You can also read the detail doc written on the module's website here >>> https://node-postgres.com/features/ssl. Thank you.

new pg.client({
  connectionString,
  ssl: {
    rejectUnauthorized: false,
  },
})

Solution 10 - node.js

const Pool = require("pg").Pool;

const proConfig = {
  connectionString: process.env.DATABASE_URL,
  ssl: {
    rejectUnauthorized: false
  }
}

const pool = new Pool(proConfig);

module.exports = pool;

Solution 11 - node.js

I faced the same issue again and again. The packages:

"pg": "^8.5.1",
"pg-hstore": "^2.3.3",
"sequelize": "^6.5.0",
"sequelize-cli": "^6.2.0"

I solved it by adding the following in the config.json file in the Sequelize.

"dialect": "postgres",
"dialectOptions": {
  "ssl": {
    "rejectUnauthorized": false
  }
}

Solution 12 - node.js

Because node-Postgres enables SSL validation by default while free Heroku hosting doesn’t provide it automatically, you need to turn it off. disable SSL in Heroku:

heroku config:set PGSSLMODE=no-verify --app <app name>

https://dpletzke.medium.com/configuring-free-heroku-node-postgresql-hosting-with-knex-b0e97a05c6af

https://help.heroku.com/DR0TTWWD/seeing-fatal-no-pg_hba-conf-entry-errors-in-postgres

Solution 13 - node.js

Just add a flag to the client initialisation:

Change

const conString = "pg://admin:guest@localhost:5432/Employees"
const client = new pg.Client(conString);
client.connect();

const conString = "pg://admin:guest@localhost:5432/Employees"
const client = new pg.Client({
  connectionString: process.env.DATABASE_URL,
  ssl: true
});
client.connect();

Solution 14 - node.js

setting ssl: true worked for me

let pg = require('pg');

let pgClient = new pg.Client({
    user: "admin",
    password: "guest",
    database: "Employees",
    port: 5432,
    host: "localhost",
    ssl: true
}); 
pgClient.connect();

Solution 15 - node.js

You have to add

ssl: true

in json connection

    {
        host: 'myHost.com',
        user: 'myUser',     
        password: 'myPassword',
        database: 'myDb',
        port: 5432,
        ssl: true
    }

Solution 16 - node.js

just update your database/config.js file by allowing and requiring SSL

  production: {
    use_env_variable: 'DATABASE_URL',
    dialect: 'postgresql',
    ssl: true,
    dialectOptions: {
      ssl: { require: true },
    },
    logging: false,
  },

after this might run into another issue: nodejs - error self-signed certificate in If that's the case, add NODE_TLS_REJECT_UNAUTHORIZED='0' as an environment variable wherever you are running node or running node directly with NODE_TLS_REJECT_UNAUTHORIZED='0' node app.js

Solution 17 - node.js

Mine was none of these solutions even though the error was the same, after trying all the above solutions for days to no avail I later figured out I added a semicolon (;) to the end of my connection string as in below;

DB_URL=pg://admin:guest@localhost:5432/Employees;

//instead of

DB_URL=pg://admin:guest@localhost:5432/Employees

the semicolon technically had added an extra character that isn't part of the configuration/authentication document hence wasn't recognized. A silly and avoidable mistake that can be made by anyone. Pay attention to details

Content Type	Original Author	Original Content on Stackoverflow
Question	stcho	View Question on Stackoverflow
Solution 1 - node.js	aembke	View Answer on Stackoverflow
Solution 2 - node.js	Simon Franzen	View Answer on Stackoverflow
Solution 3 - node.js	Victor Fazer	View Answer on Stackoverflow
Solution 4 - node.js	vizmi	View Answer on Stackoverflow
Solution 5 - node.js	Openwell	View Answer on Stackoverflow
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Solution 12 - node.js	Royer Adames	View Answer on Stackoverflow
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Solution 17 - node.js	Elizabeth	View Answer on Stackoverflow