laravelとMySQLの接続ができない

前提・実現したいこと
Laravel Framework 5.8.35
MySQL 5.6.45

laravelとMySQLの接続ができません。
php artisan migrateでエラーが表示されました。

http://qiita.com/yoriblog/items/60b7cea4f991b842022f
https://qiita.com/coldsleep6666/items/506fd6a92ff29aee90bb
これらのサイトなど試してみましたが、出来ませんでした。
因みにhomesteadは利用していません。

発生している問題・エラーメッセージ

コマンド上

[vagrant@localhost practice]$ php artisan migrate

   Illuminate\Database\QueryException  : SQLSTATE[HY000] [2002] No such file or directory (SQL: select * from information_schema.tables where table_schema = homestead and table_name = migrations and table_type = 'BASE TABLE')

  at /home/vagrant/laravel_lessons/practice/vendor/laravel/framework/src/Illuminate/Database/Connection.php:664
    660|         // If an exception occurs when attempting to run a query, we'll format the error
    661|         // message to include the bindings with SQL, which will make this exception a
    662|         // lot more helpful to the developer instead of just the database's errors.
    663|         catch (Exception $e) {
  > 664|             throw new QueryException(
    665|                 $query, $this->prepareBindings($bindings), $e
    666|             );
    667|         }
    668|

  Exception trace:

  1   PDOException::("SQLSTATE[HY000] [2002] No such file or directory")
      /home/vagrant/laravel_lessons/practice/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70

  2   PDO::__construct("mysql:unix_socket=/tmp/mysql.sock;dbname=homestead", "homestead", "secret", [])
      /home/vagrant/laravel_lessons/practice/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70

  Please use the argument -v to see more details.

.env

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=db_name
DB_USERNAME=設定した名前
DB_PASSWORD=設定したパス

database.php

     'mysql' => [
            'driver' => 'mysql',
            'url' => env('DATABASE_URL'),
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'prefix_indexes' => true,
            'strict' => true,
            'engine' => null,
            'unix_socket'   => '/Applications/MAMP/tmp/mysql/mysql.sock',
            'options' => extension_loaded('pdo_mysql') ? array_filter([
                PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
            ]) : [],
        ],

AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
// ↓mysqlと接続のため追記
use Illuminate\Support\Facades\Schema;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
      // 追記
      Schema::defaultStringLength(191);
    }
}

php artisan tinker実行結果

[vagrant@localhost practice]$ php artisan tinker
Psy Shell v0.9.9 (PHP 7.1.32 — cli) by Justin Hileman
>>> config('database')
=> [
     "default" => "mysql",
     "connections" => [
       "sqlite" => [
         "driver" => "sqlite",
         "url" => null,
         "database" => "/home/vagrant/laravel_lessons/practice/database/database.sqlite",
         "prefix" => "",
         "foreign_key_constraints" => true,
       ],
       "mysql" => [
         "driver" => "mysql",
         "url" => null,
         "host" => "127.0.0.1",
         "port" => "3306",
         "database" => "homestead",
         "username" => "homestead",
         "password" => "secret",
         "unix_socket" => "/Applications/MAMP/tmp/mysql/mysql.sock",
         "charset" => "utf8mb4",
         "collation" => "utf8mb4_unicode_ci",
         "prefix" => "",
         "prefix_indexes" => true,
         "strict" => true,
         "engine" => null,
         "options" => [],
       ],
       "pgsql" => [
         "driver" => "pgsql",
         "url" => null,
         "host" => "127.0.0.1",
         "port" => "3306",
         "database" => "homestead",
         "username" => "homestead",
         "password" => "secret",
         "charset" => "utf8",
         "prefix" => "",
         "prefix_indexes" => true,
         "schema" => "public",
         "sslmode" => "prefer",
       ],
       "sqlsrv" => [
         "driver" => "sqlsrv",
         "url" => null,
         "host" => "127.0.0.1",
         "port" => "3306",
         "database" => "homestead",
         "username" => "homestead",
         "password" => "secret",
         "charset" => "utf8",
         "prefix" => "",
         "prefix_indexes" => true,
       ],
     ],
     "migrations" => "migrations",
     "redis" => [
       "client" => "predis",
       "options" => [
         "cluster" => "predis",
         "prefix" => "laravel_database_",
       ],
       "default" => [
         "url" => null,
         "host" => "127.0.0.1",
         "password" => null,
         "port" => "6379",
         "database" => 0,
       ],
       "cache" => [
         "url" => null,
         "host" => "127.0.0.1",
         "password" => null,
         "port" => "6379",
         "database" => 1,
       ],
     ],
   ]
>>>

試したこと
エラーメッセージをコピーし、検索にかけてみましたが分かりませんでした。
初歩的な問題かもしれませんが、どうかよろしくお願い致します。