SQLSTATE[HY000] [2002] No such file or directory in yii2 - php

Question

I use ubuntu 16.04.
PHP Version 7.0.4-7ubuntu2.
Apache/2.4.18 (Ubuntu) .
PHP extension: mysqli (in phpmyadmin Written).
I got Upgrade my ubuntu from 15.10 to 16.04 and I have this error:
My project correctly run in my server but I can't run that in my os:
Database Exception – yii\db\Exception
SQLSTATE[HY000] [2002] No such file or directory
↵
Caused by: PDOException
SQLSTATE[HY000] [2002] No such file or directory
in /var/www/html/iicitySite/vendor/yiisoft/yii2/db/Connection.php at line 579

Answer 1

Changing "localhost" to "127.0.0.1" as your host
return [
'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=127.0.0.1;dbname=abc',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
],

Answer 2

For MAMP users solution is
'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;port=8889;dbname=mydbname;unix_socket=/Applications/MAMP/tmp/mysql/mysql.sock',
'username' => 'myuser',
'password' => 'mypassword',
'charset' => 'utf8',
],
],

Answer 3

Hope this answer will help You:
Change the Host name from localhost to 127.0.0.1
This is inside backend\common\config\main-local.php
Now you run php yii migrate .
Hope, It will successfully create the tables in Database

Answer 4

if you use mamp,don't use "php" command in MAC OS, but use "php" in mamp, such as /Applications/MAMP/bin/php/php5.6.30/bin/php yii migrate.

Answer 5

I had this same problem too. Changing localhost didn't solve my problem. Instead, add your db port like this:
'dsn'=>'mysql:host=localhost:3307;dbname=geep'

Answer 6

I'm running on MAMP environment and works well using 2 solutions above
change localhost to 127.0.0.1
remain as localhost and define mysql port even default port been used (localhost:3306)

Answer 7

For PHP 7.2.24-0ubuntu0.18.04.3,
Get mysql socket path
add socket info to the database config of yii2
To get the socket path login to the mysql and perform following steps
Open Terminal and perform following steps
mysql -u root -p
mysql> show variables like '%sock%';
+-----------------------------------------+------------------------------------------------------+
| Variable_name | Value |
+-----------------------------------------+------------------------------------------------------+
| mysqlx_socket | /tmp/mysqlx.sock |
| performance_schema_max_socket_classes | 10 |
| performance_schema_max_socket_instances | -1 |
| socket | /opt/packages/lampstack-7.3.9-0/mysql/tmp/mysql.sock |
+-----------------------------------------+------------------------------------------------------+
4 rows in set (0.00 sec)
exit
Next add following config information
'class' => 'yii\db\Connection',
'dsn' => 'mysql:unix_socket=/opt/packages/lampstack-7.3.9-0/mysql/tmp/mysql.sock;dbname=basketmantra',
'username' => 'root',
'password' => 'root123',
'charset' => 'utf8',
I hope this helps
In Some cases you may use httpd or apache or lampp then also make sure to check php and mysql commands in terminal are same as versions web servers are using.
phpinfo() in web server is helpful to find out the versions web server is using
<?php
phpinfo();
?>
For commands
$ type php
php is hashed (/usr/bin/php)
$ type mysql
mysql is /opt/packages/lampstack-7.3.9-0/mysql/bin/mysql

Answer 8

Using yii2, my solution is to comment codes in common/main-local.php
For some reason, yii2 try to get main-local.php in production instead of main.php in the folder common, but when is commented it works (get DB configs on common/main.php
<?php
// common/main-local.php
return [
/* 'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=172.17.0.2;dbname=ememariadb',
'username' => 'dbsenha',
'password' => 'dbUser',
'charset' => 'utf8',
],
],*/
];