mcp/app/Commands/MariadbInstallCommand.php

<?php

namespace App\Commands;

use Illuminate\Console\Scheduling\Schedule;
use LaravelZero\Framework\Commands\Command;
use Illuminate\Support\Facades\File;

use App\Facades\Install;

use Hackzilla\PasswordGenerator\Generator\ComputerPasswordGenerator;
use Hackzilla\PasswordGenerator\RandomGenerator\Php7RandomGenerator;

/**
 *
 *
 *
 */
class MariadbInstallCommand extends Command
{
    // destination for username and password
    const MCP_LOG_FILE = '/root/mcp.log';

    // length for password
    const PASSWORD_LENGTH = 40;

    /**
     * The signature of the command.
     *
     * @var string
     */
    protected $signature = 'mariadb:install';

    /**
     * The description of the command.
     *
     * @var string
     */
    protected $description = 'Install mariadb and set configuration';

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        $this->info('Mariadb install...');

        exec('apt update 2>&1');
        exec('apt install -y mariadb-server mariadb-client 2>&1');

        if (Install::isReady('mariadb-server mariadb-client')) {

            $this->info('Mariadb setup...');

            // generate password
            $generator = new ComputerPasswordGenerator();
            $generator->setRandomGenerator(new Php7RandomGenerator())
                ->setUppercase()
                ->setLowercase()
                ->setUppercase()
                ->setNumbers()
                ->setSymbols(false)
                ->setLength(self::PASSWORD_LENGTH);

            // getting password for root
            $password = $generator->generatePasswords()[0];

            // remove plugin for root and set password
            exec('sudo mysql -u root -e "UPDATE mysql.user SET Password=PASSWORD(\''.$password.'\') WHERE User=\'root\';"');
            exec('sudo mysql -u root -e "UPDATE mysql.user SET plugin=\'\' where User=\'root\';"');

            // delete anonymous user
            exec('sudo mysql -u root -e "DELETE FROM mysql.user WHERE User=\'\';"');

            // make sure root can only access from local
            exec('sudo mysql -u root -e "DELETE FROM mysql.user WHERE User=\'root\' AND Host NOT IN (\'localhost\', \'127.0.0.1\', \'::1\');"');

            // drop test database and anthing familiar
            exec('sudo mysql -u root -e "DROP DATABASE IF EXISTS test;"');
            exec('sudo mysql -u root -e "DELETE FROM mysql.db WHERE Db=\'test\' OR Db=\'test_%\';"');

            // update privileges
            exec('sudo mysql -u root -e "FLUSH PRIVILEGES;"');

            $this->info('Success! \o/ Check /root/mcp.log');
            file_put_contents(self::MCP_LOG_FILE, "Mariadb installed\nuser: root\npassword: $password\n--\n", FILE_APPEND);

        } else {
            $this->error('Failed!');
        }
    }
}