APCu logs: Memcache \OC\Memcache\APCu not available for local cache

mtimyself · July 25, 2016, 4:20pm

Steps to reproduce
Followed offifical guide: Official Guide
1. apt-get install php5-apcu (installs version 4.0.7-1)
2. service apache2 restart
3. Edit config.php to include "'memcache.local' => '\OC\Memcache\APCu',"

Expected behaviour
Memory Cache warning disappears from admin page

Actual behaviour
Memory Cache warning disappears from admin page
Entry appears in log (twice with 30 sec inbetween, never since): "OC\HintException: Memcache \OC\Memcache\APCu not available for local cache at /var/www/owncloud/lib/private/Memcache/Factory.php#95"

Server configuration
Operating system: Debian GNU/Linux 8 (jessie) - 3.16.0-4-amd64
Web server: Apache/2.4.10 (Debian)
Database: 15.1 Distrib 10.0.25-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
PHP version: 5.6.23-0+deb8u1 (cli) - Zend Engine v2.6.0 with Zend OPcache v7.0.6-dev
ownCloud version (see ownCloud admin page): 9.1.0 (stable)
Updated from an older ownCloud or fresh install: Fresh install
ownCloud log:
Error PHP OC\HintException: Memcache \OC\Memcache\APCu not available for local cache at /var/www/owncloud/lib/private/Memcache/Factory.php#95 2016-07-25T15:50:00+00:00
Error PHP OC\HintException: Memcache \OC\Memcache\APCu not available for local cache at /var/www/owncloud/lib/private/Memcache/Factory.php#95 2016-07-25T15:49:30+00:00

Special configuration (external storage, external authentication, reverse proxy, server-side-encryption): None

Integrity status for oC9+

sudo -u www-data php /var/www/owncloud/occ integrity:check-core

did not yield any results

anon30676603 · July 25, 2016, 4:24pm

Hi,

make sure that APCu is actually loaded / enabled within PHP.

mtimyself · July 25, 2016, 4:54pm

This is the (hopefully) relevant section of the phpinfo:

anon30676603 · July 25, 2016, 4:59pm

Does the received error message in your logs contains something about cron?

If yes you need to put apc.enable_cli=1 into /etc/php5/cli/php.ini

mtimyself · July 25, 2016, 5:00pm

I guess not.
I copied the content as is.

anon30676603 · July 25, 2016, 5:04pm

I think the:

twice with 30 sec inbetween, never since

shows that those where coming from cron or the occ command line. To prevent those you need to follow the instruction above.

mtimyself · July 25, 2016, 5:15pm

This would not impact any other aspect of my server's configuration?
If I can add this without any (unrelated) impacts I would be happy to add the line and check back in around 24 hours to see if this topic has been resolved.

anon30676603 · July 25, 2016, 5:27pm

That probably needs a research on your own on your favorite search engine.

mtimyself · July 25, 2016, 6:06pm

I have only just got around to setting up a cron job over the default Ajax option.
So as far as I understand I should have triggered chron.php every time I (re)loaded a page.
Doesn't this mean I would have triggered more entries in the error log?

anon30676603 · July 25, 2016, 6:10pm

The differences are described in the documentation:

https://doc.owncloud.org/server/9.1/admin_manual/configuration_server/background_jobs_configuration.html#cron-jobs

So yes, if you now configure "Cron" within the GUI and configuring a system cron which calls the cron.php you're getting this logentry at each cron run until you're configuring the mentioned php.ini option.

Hanfiey · July 26, 2016, 1:55pm

You installed Memcache APCu too?, or only the PHP APCu?. You need booth.

mtimyself · July 26, 2016, 5:01pm

I have only installed the packages as described before (only php5-apcu).
This is according to the documentation.
I have left it to do it's thing for a while and have not encountered another log entry of the same kind.
This leads me to believe that it has nothing to do with the cron jobs.

Hanfiey · July 26, 2016, 5:46pm

OK, i had access with remove and reinstall APCu like this

apt-get remove php5-APCu
apt-get install php-pear php5-dev
pecl install APCu

and
'memcache.local' => '\OC\Memcache\APCu', # \ take this in php config

Hanfiey · July 26, 2016, 5:51pm

Two (2) of \ this in php-config. it was important in my config!.

anon30676603 · July 31, 2016, 10:55am

Just did a write-up about the message if it contains a cli entry in the log output:

jamen · December 9, 2016, 7:37pm

I guess this command "apt-get install php5-apcu" may cause some trouble.

What I am going to do is set enable=1 in the "remi-php56" of the file /etc/yum.repos.d/remi.repo. Use the yum install -y php-ecl-apcu to install APCu, then APCu module might keep the same compatible version with the PHP and run fully functional.

nigelhorne · October 29, 2018, 1:02pm

apt-get install php5-apcu

Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package php5-apcu