.env文件中默认有两个DB_HOST,其中一个被注释掉了,则两个有啥区别?
.env
文件下:
将127.0.0.1
的注释掉,保留mysql
的,可以连接上数据库,也可以对数据库进行 CURD,但是php artisan migrate
会报错:
vagrant@homestead:~/projects/demo$ php artisan migrate
Illuminate\Database\QueryException
SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution (SQL: select * from information_schema.tables where table_schema = demo and table_name
= migrations and table_type = 'BASE TABLE')
at vendor/laravel/framework/src/Illuminate/Database/Connection.php:678
674▕ // If an exception occurs when attempting to run a query, we'll format the error
675▕ // message to include the bindings with SQL, which will make this exception a
676▕ // lot more helpful to the developer instead of just the database's errors.
677▕ catch (Exception $e) {
➜ 678▕ throw new QueryException(
679▕ $query, $this->prepareBindings($bindings), $e
680▕ );
681▕ }
682▕
+33 vendor frames
34 artisan:37
Illuminate\Foundation\Console\Kernel::handle()
而把mysql
的注释掉,保留127.0.0.1
的,就不会出现问题。
这两者有啥区别吗?为什么会出现这种情况?
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