Memcached error

askee

config.php He added

$Configuration['Cache']['Enabled'] = true;
$Configuration['Cache']['Method'] = 'memcached';
$Configuration['memcached']['Store'] = 'localhost';

logs - error

[Sat Jul 02 07:50:39.532713 2016] [:error] [pid 9863] [client 109.---.---.---:50331] PHP Fatal error: Class 'Memcached' not found in /var/www/---/data/www/---.ru/library/core/class.memcached.php on line 58

whu606

@askee

Have you enabled memcached on your web-server? It's not enough to simply add the lines to config.

Please see here:

https://vanillaforums.org/discussion/22848/cache-question-for-memcached

and here:

https://vanillaforums.org/discussion/31776/how-to-set-up-apc-and-memcached-caches-for-vanilla

askee

@whu606 said:
@askee

Have you enabled memcached on your web-server? It's not enough to simply add the lines to config.

[root@askee ~]# memcached-tool 127.0.0.1:11211 stats
127.0.0.1:11211 Field Value
accepting_conns 1
auth_cmds 0
auth_errors 0
bytes 179184
bytes_read 336600
bytes_written 4218064
cas_badval 0
...
serviceable

whu606

I'd suggest searching the error on Google; I don't think it's a Vanilla issue.

See, for example

http://stackoverflow.com/questions/11471977/fatal-error-class-memcached-not-found-in-my-path

Linc

You probably are missing the memcached module for PHP. Use php -i to check.

River

although php -i calls phpinfo() and reflects your web server php setup.

Some of the other php command line options don't reflect what is used by web server, so be wary of other command line options, they might not point to the php configuration that the web server is using.

http://php.net/manual/en/features.commandline.options.php

other php command line options actually may reflect different things and different ini files and not the web server setup of php.

phpinfo will always give you a true idea of what your webserver sees.

http://php.net/manual/en/function.phpinfo.php

    <?php

    // Show all information, defaults to INFO_ALL
    phpinfo();

    // Show just the module information.
    // phpinfo(8) yields identical results.
    phpinfo(INFO_MODULES);

    ?>

you probably need the memcached.so file installed in your php configuration, the ini file pointng to it and your web server restarted.

River

@Linc said:
You probably are missing the memcached module for PHP. Use php -i to check.

@River said:
although php -i calls phpinfo() and reflects your web server php setup. Some of the other php command line options don't reflect what is used by web server

although php -i calls phpinfo() and reflects your web server php setup I take this back, it is not true.
On second thought I would NEVER use php -i from the command line to verify anything that is used by the web server. The reason why.

You can have php linked to php5.5, php5.6, or php7.0 so if you run php from the command line it will run whatever version php is linked to.

So you may may have php linked to php7.0 via a symbolic link, and at the some time you may have used a command a2dismod php7.0 to disable php7.0 for the web and a2enmod php5.6 which points your apache server at php 5.6.

so php -i from the command line would return the info based on php7.0 config and could feasibly return that memcached is installed if you installed for php 7. but ....

while if you use create a file (with contents below) called phpinfo.php and run it from your web server.

 <?php
// Show all information, defaults to INFO_ALL
phpinfo();
// Show just the module information.
// phpinfo(8) yields identical results.
phpinfo(INFO_MODULES);
?>

it will show the configuration for php 5.6 which may not have memcached.

Command line php assumptions should not be confused with what php configuration your web server is using. unless you want to confuse yourself even more. While they may have similar modules and settings, they may not.

you could have two twin daughters - alike in every way but. one loads up on Bacon and Eggs in the morning and the other may have cereal.

Linc

It's a fair point, but @askee posted this to show how he checked for memcached:

[root@askee ~]# memcached-tool 127.0.0.1:11211 stats

That doesn't strike me as a junior developer approach to answering that question, so I assume he knows how PHP works. Also, if you're running nginx OR running Apache via CGI instead of the module, they can and should be the same instance of PHP.

So yeah, if you're just stumbling into this discussion from parts unknown, it's more foolproof to use phpinfo(). Still feel pretty confident @askee can just do what I suggested.