In GitHub actions, I am running a JavaScript file which connects to PostgreSQL and creates the table and extension for the database.
my script looks like this:
const { Client } = require('pg')
const pgclient = new Client({
host: process.env.POSTGRES_HOST,
port: process.env.POSTGRES_PORT,
user: process.env.POSTGRES_USER,
password: process.env.POSTGRES_PASSWORD,
database: process.env.POSTGRES_DB,
})
pgclient.connect()
const createDB = `
drop database mydb;
create database mydb;
\c mydb;
CREATE EXTENSION "pgcrypto";
`
pgclient.query(createDB, (err, res) => {
if (err) throw err
pgclient.end()
})
When I run the script, I get an error
error: syntax error at or near "c"
Which I am guessing is coming from \c flag.
How do I use PostgreSQL commands like this?
you can not use \c here because it is a psql meta-command, which I think you do not use here: See https://www.postgresql.org/docs/current/app-psql.html.
You need to reconnect to the new DB like so:
const pgclient_mydb = new Client({
host: process.env.POSTGRES_HOST,
port: process.env.POSTGRES_PORT,
user: process.env.POSTGRES_USER,
password: process.env.POSTGRES_PASSWORD,
database: 'mydb',
})
pgclient_mydb.connect()
See also https://stackoverflow.com/a/43670984/10743176
Related
I tried to connect the MongoDB Atlas to my Deno Application using https://deno.land/x/mongo#v0.21.2 framework. I tried the below code to run my application. but I get an error No such host is known. (os error 11001) What went wrong here
Error
error: Uncaught Error: No such host is known. (os error 11001)
at unwrapResponse (rt\10_dispatch_json.js:24:13)
at sendAsync (rt\10_dispatch_json.js:75:12)
at async Object.connect (rt\30_net.js:221:13)
at async MongoClient.connect (client.ts:41:14)
at async mongodb.ts:33:1
Mongodb.ts File
import { MongoClient } from "https://deno.land/x/mongo#v0.21.0/mod.ts";
const client1 = new MongoClient();
await client1.connect("mongodb+srv://user1:MYPASSWORD#cluster0.hmdnu.mongodb.net/TestingDB?retryWrites=true&w=majority");
const db = client1.database("TestingDB");
export default db;
I used this command to run my server
deno run --allow-net --allow-write --allow-read --allow-plugin --unstable server.ts
I fixed this using https://www.youtube.com/watch?v=hhdhydffKKE this video reference
Follow these steps to fix this
import { MongoClient } from "https://deno.land/x/mongo#v0.21.0/mod.ts";
const client1 = new MongoClient();
await client.connect({
db: "<db>",
tls: true,
servers: [
{
host: "<host>",
port: 27017,
},
],
credential: {
username: "<user>",
password: "<password>",
db: "<db>",
mechanism: "SCRAM-SHA-1",
},
});
const db = client1.database("TestingDB");
export default db;
This is not mentions in the document, but this will help to fix the issue
<db> is the database name, you can get the database name by following these steps
Step-1
Step-2
To find the <host> follow these steps
Step -1
Step -2
Step -3
Thanks reading my issue.
Currently, I am using postgres (hobby-dev) on Heroku and facing this issue every time that I connect to the database.
error: Uncaught (in promise) Error: Unknown auth message code 1397113172
throw new Error(`Unknown auth message code ${code}`);
^
at Connection.handleAuth (connection.ts:197:15)
at Connection.startup (connection.ts:155:16)
at async Pool._createConnection (pool.ts:32:5)
at async pool.ts:61:7
at async Promise.all (index 0)
at async Pool._startup (pool.ts:63:25)
My application using Deno now
import { Pool } from "https://deno.land/x/postgres/mod.ts";
import { config } from "./config.ts";
const port = config.DB_PORT ? parseInt(config.DB_PORT || "") : undefined;
const POOL_CONNECTIONS = 20;
const dbPool = new Pool({
port,
hostname: config.DB_HOST,
user: config.DB_USER,
database: config.DB_NAME,
password: config.DB_PASS
}, POOL_CONNECTIONS);
export { dbPool };
Here is debug screen.
I have found this issue post and it mentioned about lacking ssl. Not sure how to do it on heroku.
I have tried some solutions, even change lib to pg and it still not work. I am very appreciated if any clue or help to fix this issue.
Note:
I read a document on heroku about "Heroku Postgres Connection Pooling is not available for Hobby-tier databases.". Then I switched to use Client with syntax similar like this to connect to Heroku postgres this:
import { Client } from "https://deno.land/x/postgres/mod.ts";
let config;
config = {
hostname: "localhost",
port: 5432,
user: "user",
database: "test",
applicationName: "my_custom_app"
};
// alternatively
config = "postgres://user#localhost:5432/test?application_name=my_custom_app";
const client = new Client(config);
await client.connect();
await client.end();
ref: https://deno-postgres.com/#/
Unable to connect to postgres in deno.js.
Here is the configuration:
const dbCreds = {
applicationName: "appname",
user: "user_sfhjwre",
database: "d9iu8mve7nen",
password: "68790f31eelkhlashdlkagsvADSDa52f9d8faed894c037ef6f9c9f09885603",
hostname: "ec2-345-34-97-212.eu-east-1.xx.amazonaws.com",
port: 5432,
};
export { dbCreds };
Usage:
import { Client } from "https://deno.land/x/postgres/mod.ts";
import { dbCreds } from "../config.ts";
const client = new Client(dbCreds);
await client.connect();
Also tried:
config = "postgres://user#localhost:5432/test?application_name=my_custom_app";
const client = new Client(config);
await client.connect();
Same result:
Uncaught Error: Unknown auth message code 1397113172
Is there anything wrong with the syntax, I can connect to the same db using prisma.
I have the PostgreSQL server in a remote server and, each time my public IP changes, I need to change the pg_hba.conf in order to set my new public IP as authorized for remote access.
Hope this helps.
Best regards.
I have been given a knexfile like this:
require('dotenv').config()
module.exports = {
client: 'pg',
connection: process.env.DB_CONNECTION,
pool: {
min: 2,
max: 10
},
migrations: {
tableName: 'knex_migrations'
}
};
The connection string I supply is:
Host=localhost;Database=heypay;Username=postgres;Password=1234
However, Knex keeps issuing the error:
password authentication failed for user "user"
Apparently, the username I have given is not user. Moreover, I have tried to hardcore the connection string into the connection filed under module.exports. This still ended up in vain.
The trick is, the connection property can either be a string or an object. That's why you were able to supply an environment variable (it's a string).
The reason your original string was failing is not a Knex problem: Postgres connection strings have a slightly different format. You can use a similar approach as your first attempt, but pay attention to the key names:
host=localhost port=5432 dbname=mydb connect_timeout=10
Also note spaces, not semicolons. However in my experience most people use a Postgres URI:
postgresql://[user[:password]#][netloc][:port][,...][/dbname][?param1=value1&...]
So in your example, you'd use:
module.exports = {
client: 'pg',
connection: 'postgresql://your_database_user:password#localhost/myapp_test',
pool: {
min: 2,
max: 10
},
migrations: {
tableName: 'knex_migrations'
}
};
I was using a .NET style connection string, the correct one would be in the following format:
{
host : '127.0.0.1',
user : 'your_database_user',
password : 'your_database_password',
database : 'myapp_test'
}
Trying to connect to postgres using the pg client (following these instructions).
Here is my connection string var connectionString = "postgres://postgres:pass#localhost/ip:5432/chat";
Here's the error I'm getting trying to connect:
UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): error: database "ip:5432/twitchchat" does not exist
However, when I run pg_isready I get the response /tmp:5432 - accepting connections Which I read as telling me postgres is running on port 5432.
The database is very definitely existing.
Here's the simple connection code:
var pg = require('pg');
var connectionString =
"postgres://postgres:pass#localhost/ip:5432/chat";
var connection = new pg.Client(connectionString);
connection.connect();
What's happening here? How do I fix this?
Your connection string is malformed:
Change it to:
`"postgres://postgres:pass#localhost:5432/chat"`
The correct format is:
postgresql://[user]:[password]#[address]:[port]/[dbname]
Ok I fixed it with the following:
const { Client } = require('pg');
const connection = new Client({
user: 'postgres',
host: 'localhost',
database: 'chat',
password: 'pass',
port: 5432,
});
connection.connect();