"No such file or directory" or "No such host is known" when running migrations

Question

I deleted the migrations table from a Laravel 5.4 database named laravel. When I run php artisan migrate:install, I get this error:

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

I deleted and recreated the database. I also ran composer update. No luck. I can run the command in phpMyAdmin and create the table manually.

This problem sometimes also manifests itself with similar 2002 errors:

[Illuminate\Database\QueryException]
SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: No such host is known.
(SQL: select * from information_schema.tables where table_schema = laravel
    and table_name = migrations and table_type = 'BASE TABLE')

[Illuminate\Database\QueryException]
SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known
(SQL: select * from information_schema.tables where table_schema = laravel
    and table_name = migrations and table_type = 'BASE TABLE')

Answer 1

If you are using localhost as your DATABASE_HOST in the .env file, change it to 127.0.0.1, then run php artisan config:clear and now try php artisan migrate:install again.