Я пытаюсь подключиться к моей базе данных MariaDB, используя Node.js на основе этого учебного пособия:
const mariadb = require('mariadb');
const pool = mariadb.createPool({
host: 'myhost.com',
user:'root',
password: 'password',
database: 'db_p',
connectionLimit: 2
});
async function asyncFunction() {
let conn;
try {
console.log('establishing connection')
conn = await pool.getConnection();
console.log('established')
const rows = await conn.query("SHOW TABLES");
console.log(rows);
} catch (err) {
console.log(err)
throw err;
} finally {
if (conn) return conn.end();
}
}
, но все, что я получаю, это ошибка:
establishing connection
{ Error: retrieve connection from pool timeout
at Object.module.exports.createError (/Users/jan/Developer/microservice/node_modules/mariadb/lib/misc/errors.js:55:10)
at rejectTimeout (/Users/jan/Developer/microservice/node_modules/mariadb/lib/pool.js:267:16)
at Timeout.rejectAndResetTimeout [as _onTimeout] (/Users/jan/Developer/microservice/node_modules/mariadb/lib/pool.js:287:5)
at ontimeout (timers.js:486:15)
at tryOnTimeout (timers.js:317:5)
at Timer.listOnTimeout (timers.js:277:5)
fatal: false,
errno: 45028,
sqlState: 'HY000',
code: 'ER_GET_CONNECTION_TIMEOUT' }
(node:76515) UnhandledPromiseRejectionWarning: Error: retrieve connection from pool timeout
at Object.module.exports.createError (/Users/jan/Developer/microservice/node_modules/mariadb/lib/misc/errors.js:55:10)
at rejectTimeout (/Users/jan/Developer/microservice/node_modules/mariadb/lib/pool.js:267:16)
at Timeout.rejectAndResetTimeout [as _onTimeout] (/Users/jan/Developer/microservice/node_modules/mariadb/lib/pool.js:287:5)
at ontimeout (timers.js:486:15)
at tryOnTimeout (timers.js:317:5)
at Timer.listOnTimeout (timers.js:277:5)
(node:76515) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This errororiginated either by throwing inside of an async function without a catch block, or byrejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:76515) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Я программировал в JS последние два года, но я новичок в Node.js и подумал, что он должен работать «из коробки».Кто-нибудь?