Laravel Can't Connect to database - Migrations - Error 2002

问题

I have searched for a couple of hours now, and still am unable to find this.

I get 2 errors, if I use the database host as 'localhost', I get this error:

[PDOException]                                    
SQLSTATE[HY000] [2002] No such file or directory  

and if I change the database host to '127.0.0.1' I get this error:

 [PDOException]                             
 SQLSTATE[HY000] [2002] Connection refused

Things I have tried:

• changing where the apache / mysql server is run (either user or `josh (Apache) / josh (MySQL)
• changing the port that MySQL runs on in MAMP, and putting that port in the mysql array in the database.php file
• changing the host of the connection from localhost to 127.0.0.1 and back.
• creating a new user in phpmyadmin
• turning off the firewall

Any ideas how to fix this?

回答1:

I figured it out, add this after the 'host' => '127.0.0.1':

'unix_socket'   => '/Applications/MAMP/tmp/mysql/mysql.sock'

So the connection would look like this:

'mysql' => array(
        'driver'        => 'mysql',
        'host'          => '127.0.0.1',
        'unix_socket'   => '/Applications/MAMP/tmp/mysql/mysql.sock',
        'database'      => 'dbname',
        'username'      => 'josh',
        'password'      => 'pass',
        'charset'       => 'utf8',
        'collation'     => 'utf8_unicode_ci',
        'prefix'        => '',
    )

回答2:

IF you use lampp . You can try this:

Open file mysql config. (you can open lampp control panel in /opt/lampp/manager-linux-x64.run,after that open Configure of Mysql Database or open /opt/lampp/etc/my.cnf).

Find and see "socket =/opt/lampp/var/mysql/mysql.sock",

Add 'unix_socket' => '/opt/lampp/var/mysql/mysql.sock' to file database.php in laravel:

'mysql' => [
        'driver'    => 'mysql',
        'unix_socket'      => '/opt/lampp/var/mysql/mysql.sock',
        'host'      => env('DB_HOST', 'localhost'),
        'database'  => env('DB_DATABASE', 'luanvan'),
        'username'  => env('DB_USERNAME', 'huuthang'),
        'password'  => env('DB_PASSWORD', '123456'),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],

File mysql.sock depend on your install location of lampp. I let you see if you can't find it. Good luck

回答3:

I had to do the following in ubuntu 15.10

copy the file or file contents from /opt/lampp/etc/my.cnf to /etc/mysql/my.cnf

Then open database.php file in your app/config folder and add the following line below 'host' => env('DB_HOST', 'localhost')

'unix_socket' => '/opt/lampp/var/mysql/mysql.sock'

That solved my problem, could save someone else's. Please note that it is VERY IMPORTANT you first verify the directory which contains mysql.sock file before configuring the path.

来源：https://stackoverflow.com/questions/27693933/laravel-cant-connect-to-database-migrations-error-2002