问题
I am trying to reset PHP opcache after a symlink-style deployment. There is the opcache_reset.php file in my project which is executing by wget after the document root's symlink replacement:
<?php
clearstatcache(true);
opcache_reset();
In spite of that, the old files are still used. According to opcache_get_status() output, the number of manual_restarts increases, last_restart_time keeps up-to-date, but the file paths remains outdated. I need to call opcache_reset.php manually after a minute or so after deploy to make things right.
PHP version is 5.5.6, ZendOpcache is 7.0.3-dev. Opcache config:
opcache.blacklist_filename => no value
opcache.consistency_checks => 0
opcache.dups_fix => Off
opcache.enable => On
opcache.enable_cli => On
opcache.enable_file_override => Off
opcache.error_log => no value
opcache.fast_shutdown => 1
opcache.force_restart_timeout => 180
opcache.inherited_hack => On
opcache.interned_strings_buffer => 8
opcache.load_comments => 1
opcache.log_verbosity_level => 1
opcache.max_accelerated_files => 4000
opcache.max_file_size => 0
opcache.max_wasted_percentage => 5
opcache.memory_consumption => 128
opcache.optimization_level => 0xFFFFFFFF
opcache.preferred_memory_model => no value
opcache.protect_memory => 0
opcache.restrict_api => no value
opcache.revalidate_freq => 60
opcache.revalidate_path => Off
opcache.save_comments => 1
opcache.use_cwd => On
opcache.validate_timestamps => On
回答1:
Reasons and two possible solutions described in the ZendOptimizerPlus issue.
We solved it by using $realpath_root in the nginx config:
fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
fastcgi_param DOCUMENT_ROOT $realpath_root;
回答2:
If you are for some reason not able to use fastcgi_param with $realpath_root and using symlink style deployment, then try to set the opcache.revalidate_path = On in your php ini configuration. I was not able to find any good documentation that explains how this ini directory works under the hood, but it did work after I changed the symlinks. Hope this helps anyone.
回答3:
I also faced that issue then finally I make a solution.
$ curl -sO http://gordalina.github.io/cachetool/downloads/cachetool.phar
$ chmod +x cachetool.phar
You can connect to a automatically guessed fastcgi server (if /var/run/php5-fpm.sock is a file or 127.0.0.1:9000)
apc
apc:bin:dump Get a binary dump of files and user variables
apc:bin:load Load a binary dump into the APC file and user variables
apc:cache:clear Clears APC cache (user, system or all)
apc:cache:info Shows APC user & system cache information
apc:cache:info:file Shows APC file cache information
apc:key:delete Deletes an APC key
apc:key:exists Checks if an APC key exists
apc:key:fetch Shows the content of an APC key
apc:key:store Store an APC key with given value
apc:sma:info Show APC shared memory allocation information
opcache
opcache:configuration Get configuration information about the cache
opcache:reset Resets the contents of the opcode cache
opcache:status Show summary information about the opcode cache
opcache:status:scripts Show scripts in the opcode cache
Example :
[root@ip-172-31-5-244 ~]# php cachetool.phar opcache:status
+----------------------+---------------------------------+
| Name | Value |
+----------------------+---------------------------------+
| Enabled | Yes |
| Cache full | No |
| Restart pending | No |
| Restart in progress | No |
| Memory used | 42.71 MiB |
| Memory free | 85.29 MiB |
| Memory wasted (%) | 0 b (0%) |
| Strings buffer size | 8 MiB |
| Strings memory used | 5.31 MiB |
| Strings memory free | 2.69 MiB |
| Number of strings | 103847 |
+----------------------+---------------------------------+
| Cached scripts | 1261 |
| Cached keys | 2748 |
| Max cached keys | 7963 |
| Start time | Thu, 08 Feb 2018 02:28:56 +0000 |
| Last restart time | Thu, 08 Feb 2018 03:10:19 +0000 |
| Oom restarts | 0 |
| Hash restarts | 0 |
| Manual restarts | 1 |
| Hits | 47839 |
| Misses | 1269 |
| Blacklist misses (%) | 0 (0%) |
| Opcache hit rate | 97.415899649752 |
+----------------------+---------------------------------+
[root@ip-172-31-5-244 ~]#
[root@ip-172-31-5-244 ~]#
[root@ip-172-31-5-244 ~]# php cachetool.phar opcache:reset
[root@ip-172-31-5-244 ~]#
[root@ip-172-31-5-244 ~]#
[root@ip-172-31-5-244 ~]# php cachetool.phar opcache:status
+----------------------+---------------------------------+
| Name | Value |
+----------------------+---------------------------------+
| Enabled | Yes |
| Cache full | No |
| Restart pending | No |
| Restart in progress | No |
| Memory used | 10.43 MiB |
| Memory free | 117.57 MiB |
| Memory wasted (%) | 0 b (0%) |
| Strings buffer size | 8 MiB |
| Strings memory used | 545.69 KiB |
| Strings memory free | 7.47 MiB |
| Number of strings | 103847 |
+----------------------+---------------------------------+
| Cached scripts | 0 |
| Cached keys | 0 |
| Max cached keys | 7963 |
| Start time | Thu, 08 Feb 2018 02:28:56 +0000 |
| Last restart time | Thu, 08 Feb 2018 03:19:00 +0000 |
| Oom restarts | 0 |
| Hash restarts | 0 |
| Manual restarts | 2 |
| Hits | 0 |
| Misses | 2 |
| Blacklist misses (%) | 0 (0%) |
| Opcache hit rate | 0 |
+----------------------+---------------------------------+
You can notice that the memory , cache keys , hits everythings became 0 :-). Its very useful. I also intrigrated it with Ansible easily.
Its application for apcu and others stuffs : Check more there http://gordalina.github.io/cachetool/
来源：https://stackoverflow.com/questions/23737627/php-opcache-reset-symlink-style-deployment