在CentOS系统下，使用Laravel框架实现权限控制通常涉及以下几个步骤：

1. 安装Laravel： 如果你还没有安装Laravel，请先按照官方文档进行安装。

2. 创建用户模型和迁移文件： 使用Artisan命令创建用户模型和迁移文件。

   php artisan make:model User -m
   

3. 定义用户模型： 在app/Models/User.php文件中定义用户模型，并添加必要的属性和方法。

   namespace App\Models;
   
   use Illuminate\Database\Eloquent\Factories\HasFactory;
   use Illuminate\Foundation\Auth\User as Authenticatable;
   
   class User extends Authenticatable
   {
       use HasFactory;
   
       // 定义用户可以访问的路由
       public function roles()
       {
           return $this->belongsToMany(Role::class);
       }
   
       // 定义用户可以拥有的权限
       public function permissions()
       {
           return $this->belongsToMany(Permission::class);
       }
   }
   

4. 创建角色和权限模型： 使用Artisan命令创建角色和权限模型以及迁移文件。

   php artisan make:model Role -m
   php artisan make:model Permission -m
   

5. 定义角色和权限模型： 在app/Models/Role.php和app/Models/Permission.php文件中定义角色和权限模型，并添加必要的属性和方法。

   // app/Models/Role.php
   namespace App\Models;
   
   use Illuminate\Database\Eloquent\Factories\HasFactory;
   use Illuminate\Database\Eloquent\Model;
   
   class Role extends Model
   {
       use HasFactory;
   
       public function users()
       {
           return $this->belongsToMany(User::class);
       }
   
       public function permissions()
       {
           return $this->belongsToMany(Permission::class);
       }
   }
   
   // app/Models/Permission.php
   namespace App\Models;
   
   use Illuminate\Database\Eloquent\Factories\HasFactory;
   use Illuminate\Database\Eloquent\Model;
   
   class Permission extends Model
   {
       use HasFactory;
   
       public function roles()
       {
           return $this->belongsToMany(Role::class);
       }
   }
   

6. 创建迁移文件： 在database/migrations目录下创建角色和权限的迁移文件，并定义它们之间的关系。

   // database/migrations/xxxx_xx_xx_xxxxxx_create_roles_table.php
   use Illuminate\Database\Migrations\Migration;
   use Illuminate\Database\Schema\Blueprint;
   use Illuminate\Support\Facades\Schema;
   
   class CreateRolesTable extends Migration
   {
       public function up()
       {
           Schema::create('roles', function (Blueprint $table) {
               $table->id();
               $table->string('name');
               $table->string('display_name')->nullable();
               $table->timestamps();
           });
       }
   
       public function down()
       {
           Schema::dropIfExists('roles');
       }
   }
   
   // database/migrations/xxxx_xx_xx_xxxxxx_create_permissions_table.php
   use Illuminate\Database\Migrations\Migration;
   use Illuminate\Database\Schema\Blueprint;
   use Illuminate\Support\Facades\Schema;
   
   class CreatePermissionsTable extends Migration
   {
       public function up()
       {
           Schema::create('permissions', function (Blueprint $table) {
               $table->id();
               $table->string('name');
               $table->string('display_name')->nullable();
               $table->timestamps();
           });
       }
   
       public function down()
       {
           Schema::dropIfExists('permissions');
       }
   }
   
   // database/migrations/xxxx_xx_xx_xxxxxx_create_role_user_table.php
   use Illuminate\Database\Migrations\Migration;
   use Illuminate\Database\Schema\Blueprint;
   use Illuminate\Support\Facades\Schema;
   
   class CreateRoleUserTable extends Migration
   {
       public function up()
       {
           Schema::create('role_user', function (Blueprint $table) {
               $table->foreignId('role_id')->constrained()->onDelete('cascade');
               $table->foreignId('user_id')->constrained()->onDelete('cascade');
               $table->primary(['role_id', 'user_id']);
           });
       }
   
       public function down()
       {
           Schema::dropIfExists('role_user');
       }
   }
   
   // database/migrations/xxxx_xx_xx_xxxxxx_create_permission_role_table.php
   use Illuminate\Database\Migrations\Migration;
   use Illuminate\Database\Schema\Blueprint;
   use Illuminate\Support\Facades\Schema;
   
   class CreatePermissionRoleTable extends Migration
   {
       public function up()
       {
           Schema::create('permission_role', function (Blueprint $table) {
               $table->foreignId('permission_id')->constrained()->onDelete('cascade');
               $table->foreignId('role_id')->constrained()->onDelete('cascade');
               $table->primary(['permission_id', 'role_id']);
           });
       }
   
       public function down()
       {
           Schema::dropIfExists('permission_role');
       }
   }
   

7. 运行迁移： 运行迁移命令以创建数据库表。

   php artisan migrate
   

8. 定义中间件： 创建中间件来检查用户是否有权限访问某个路由。

   php artisan make:middleware CheckPermission
   

9. 实现中间件逻辑： 在app/Http/Middleware/CheckPermission.php文件中实现中间件逻辑。

   namespace App\Http\Middleware;
   
   use Closure;
   use Illuminate\Support\Facades\Auth;
   
   class CheckPermission
   {
       public function handle($request, Closure $next, $permission)
       {
           if (!Auth::check()) {
               return redirect('/login');
           }
   
           $user = Auth::user();
   
           if (!$user->permissions->contains('name', $permission)) {
               abort(403);
           }
   
           return $next($request);
       }
   }
   

10. 注册中间件： 在app/Http/Kernel.php文件中注册中间件。

    protected $routeMiddleware = [
        // 其他中间件
        'permission' => \App\Http\Middleware\CheckPermission::class,
    ];
    

11. 应用中间件： 在路由文件中应用中间件。

    Route::get('/admin', [AdminController::class, 'index'])->middleware('permission:manage_users');
    

通过以上步骤，你可以在CentOS系统下使用Laravel框架实现权限控制。