问题
I have installed CakePHP 2.0 framwork using steps below:
1. Start the terminal
2. sudo mkdir /var/www/cakephp
3.sudo cp -r ~/cakephp/* /var/www/cakephp
Change tmp folder permisssion
4. sudo chmod -R 777 cakephp/app/tmp
Enable mod-rewrite
5. sudo a2enmod rewrite
Open file /etc/apache2/sites-enabled/000-default and change AllowOverride None to AllowOverride All
6. sudo vim /etc/apache2/sites-enabled/000-default
Restart Apache
7. sudo /etc/init.d/apache2 restart
I opened my browser and typed address http://localhost/cakephp/ and I seaw this error message:
Warning: _cake_core_ cache was unable to write 'cake_dev_en-us' to File cache in /var/www /cakephp/lib/Cake/Cache/Cache.php on line 310
Warning: _cake_core_ cache was unable to write 'cake_dev_en-us' to File cache in /var/www/cakephp/lib/Cake/Cache/Cache.php on line 310
Warning: /var/www/cakephp/app/tmp/cache/persistent/ is not writable in /var/www/cakephp /lib/Cake/Cache/Engine/FileEngine.php on line 320
Warning: /var/www/cakephp/app/tmp/cache /models/ is not writable in /var/www/cakephp/lib/Cake/Cache/Engine/FileEngine.php on line 320
Warning: /var/www/cakephp/app/tmp/cache/ is not writable in /var/www/cakephp/lib/Cake /Cache/Engine/FileEngine.php on line 320
回答1:
The command sudo chmod -R 777 cakephp/app/tmp only made tmp writable, you should make cache and it's subdirectories writable as well, otherwise Cake can't write the cache files to the cache directory in tmp.
So, these directories should be writable:
cakephp/app/tmp/cache
cakephp/app/tmp/cache/persistent
cakephp/app/tmp/cache/models
Make sure the log directory is writable as well: cakephp/app/tmp/logs.
回答2:
I've faced similar problems. Here are a couple of things that helped me:
If you don't want to use the "sledgehammer" approach of chmod 777 (you may want to avoid it on production, for instance), the CakePHP installation instructions provide details on how to use ACL instead:
- For Cake 2: http://book.cakephp.org/2.0/en/installation.html#permissions
- For Cake 3: http://book.cakephp.org/3.0/en/installation.html#permissions
Note that you'll probably need to use sudo for the setfacl commands given there.
However, in my experience (CakePHP 2), those commands aren't enough. These commands give your webserver user access to the cache etc, but anything you run from the command line (like the cake command) will probably be running as your user rather than the webserver user.
Therefore, you should run the setfacl commands linked to above a second time, replacing ${HTTPDUSER} with your user name. If you're not sure what your username is, type whoami to find it.
回答3:
I have encountered a very similar problem with cachePhp 3.
Warning (512): /cache/persistent/ is not writable [CORE/src/Cache/Engine/FileEngine.php, line 439]
Warning (512): Cache engine Cake\Cache\Engine\FileEngine is not properly configured. [CORE/src/Cache/Cache.php, line 177]
Because I am new in CakePhp, I have debuged the file with problem - CORE/src/Cache/Engine/FileEngine.php. Here is function like next:
protected function _active()
{
$dir = new SplFileInfo($this->_config['path']);
$path = $dir->getPathname();
$success = true;
if (!is_dir($path)) {
//@codingStandardsIgnoreStart
$success = @mkdir($path, 0775, true);
//@codingStandardsIgnoreEnd
}
$isWritableDir = ($dir->isDir() && $dir->isWritable());
if (!$success || ($this->_init && !$isWritableDir)) {
$this->_init = false;
trigger_error(sprintf(
'%s is not writable',
$this->_config['path']
), E_USER_WARNING);
}
return $success;
}
It checks if cache directory is writable and get data about path form $this->_config['path'] variable. This variable is initialized by default from .env file (if you use it), and it has lines like next:
export CACHE_DEFAULT_URL="File://tmp/cache/?prefix=${APP_NAME}_default&duration=${CACHE_DURATION}"
export CACHE_CAKECORE_URL="File://tmp/cache/persistent?prefix=${APP_NAME}_cake_core&serialize=true&duration=${CACHE_DURATION}"
export CACHE_CAKEMODEL_URL="File://tmp/cache/models?prefix=${APP_NAME}_cake_model&serialize=true&duration=${CACHE_DURATION}"
I have changed all File: to Null:, like next:
export CACHE_DEFAULT_URL="Null://tmp/cache/?prefix=${APP_NAME}_default&duration=${CACHE_DURATION}"
export CACHE_CAKECORE_URL="Null://tmp/cache/persistent?prefix=${APP_NAME}_cake_core&serialize=true&duration=${CACHE_DURATION}"
export CACHE_CAKEMODEL_URL="Null://tmp/cache/models?prefix=${APP_NAME}_cake_model&serialize=true&duration=${CACHE_DURATION}"
export CACHE_DRV_DEFLT = "Null"
export CACHE_DRV_MODEL = "Null"
export CACHE_DRV_CORE = "Null"
And it helps, my problem was fixed. Probably it will be helpfull for someone. Enjoy!
回答4:
Using chmod -R 777 /var/www/cakephp/app/tmp/ i.e. making folder execuatble will solve this issue. I even faced similar issue while testing cron i.e. shell which exists in app/Console/Command/ folder. When we execute a cron multiple time, tmp/ folder permission is overwritten and permission error will come in picture at this point which can be avoided by making tmp/ folder executable recursively.
回答5:
As a temporary fix, if you want to use the provided .env file and permissions did not solve your issue modify the .env file to use absolute path that points to your app directory
export CACHE_FOLDER="/var/www/absolute_path_to_my_cakephp_app/"
export CACHE_DURATION="+2 minutes"
export CACHE_DEFAULT_URL="file://${CACHE_FOLDER}tmp/cache/?prefix=${APP_NAME}_default&duration=${CACHE_DURATION}"
export CACHE_CAKECORE_URL="file://${CACHE_FOLDER}tmp/cache/persistent?prefix=${APP_NAME}_cake_core&serialize=true&duration=${CACHE_DURATION}"
export CACHE_CAKEMODEL_URL="file://${CACHE_FOLDER}tmp/cache/models?prefix=${APP_NAME}_cake_model&serialize=true&duration=${CACHE_DURATION}"
回答6:
“chmod -R 777 tmp/cache” if tmp folder is not exists then create tmp file using mkdir tmp and mkdir tmp/cache
chmod -R 777 logs
chmod -R 777 tmp/sessions
chmod -R 777 tmp/tests
chcon -R -t httpd_sys_content_rw_t 'tmp'
chcon -R -t httpd_sys_content_rw_t 'logs'
来源：https://stackoverflow.com/questions/8879614/facing-a-file-permission-error-while-running-cakephp-in-ubuntu-10-4