cakephpの初期画面が表示されない


AWSのAmazon Linuxにcakephpをアップロードしたのですが、cakephpの初期画面が出ずに以下のようなエラーが出現しています。  
AWSのサーバーにはphpをインストール済みです。  
詳しい方、ご教示ください。よろしくお願いいたします。

[code]

    Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function.
             In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier.
             We selected 'UTC' for 'UTC/0.0/no DST' instead in /var/www/html/cakephp/lib/Cake/Cache/CacheEngine.php on line 60
    Warning: _cake_core_ cache was unable to write 'cake_dev_ja' to File cache in /var/www/html/cakephp/lib/Cake/Cache/Cache.php on line 328
    Warning: /var/www/html/cakephp/app/tmp/cache/persistent/ is not writable in /var/www/html/cakephp/lib/Cake/Cache/Engine/FileEngine.php on line 385
    Fatal error: Uncaught exception 'CacheException' with message 'Cache engine "_cake_core_" is not properly configured.
             Ensure required extensions are installed, and credentials/permissions are correct' in /var/www/html/cakephp/lib/Cake/Cache/Cache.php:186
    Stack trace:
    #0 /var/www/html/cakephp/lib/Cake/Cache/Cache.php(151): Cache::_buildEngine('_cake_core_') 
    #1 /var/www/html/cakephp/app/Config/core.php(374): Cache::config('_cake_core_', Array) 
    #2 /var/www/html/cakephp/lib/Cake/Core/Configure.php(72): include('/var/www/html/c...') 
    #3 /var/www/html/cakephp/lib/Cake/bootstrap.php(175): Configure::bootstrap(true) 
    #4 /var/www/html/cakephp/app/webroot/index.php(104): include('/var/www/html/c...') 
    #5 /var/www/html/cakephp/index.php(41): require('/var/www/html/c...') 
    #6 {main} thrown in /var/www/html/cakephp/lib/Cake/Cache/Cache.php on line 186
    
[/code]

追記：nginxを再起動したら、画面が出たのですが、CSSが効いていないようです。。




書き込み権限以外にもPHPの設定が足りていないようですね。

> Warning: strtotime(): It is not safe to rely on the system's timezone
> settings. You are _required_ to use the date.timezone setting or the
> date_default_timezone_set() function. In case you used any of those methods
> and you are still getting this warning, you most likely misspelled the
> timezone identifier. We selected 'UTC' for 'UTC/0.0/no DST' instead in
> /var/www/html/cakephp/lib/Cake/Cache/CacheEngine.php on line 60

ようするにdate.timezoneの設定がされていないからUTCとして認識してるということです。  
日本で運用する場合は以下の設定をphp.iniなどにすればいいです。

[code]

    date.timezone = Asia/Tokyo
    
[/code]

