NC13: "Memcache \\OC\\Memcache\\APCu not available for local cache"

🚧 Installation
1

I’m running Nextcloud 13.02 on Ubuntu 16.04.4 x64.

 
nextcloud.log

I found that after executing php occ prview:generate-all

{"reqId":"kAvXDNPPClLiqsw6oKJL","level":1,"time":"2018-04-28T12:59:25+00:00","remoteAddr":"","user":"--","app":"cli","method":"--","url":"--","message":"Memcache \\OC\\Memcache\\APCu not available for local cache","userAgent":"--","version":"13.0.2.1"}

 
This is what i have installed:

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.4 LTS
Release:        16.04
Codename:       xenial


php -v | grep PHP
PHP 7.0.28-0ubuntu0.16.04.1 (cli) ( NTS )
Copyright (c) 1997-2017 The PHP Group


dpkg --list | grep apcu
ii  php-apcu       5.1.3+4.0.10-1build1    md64    APC User Cache for PHP


php -m | grep apcu
apcu

 
phpinfo

apcu
apcu950×616 11.7 KB

 
config.php

  'memcache.distributed' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'redis' => array (
              'host' => 'localhost',
              'port' => 6379,
            ),

 
Redis

dpkg --list | grep redis
ii  libhiredis0.13:amd64   0.13.3-2                    amd64  minimalistic C client library for Redis
ii  php-redis              2.2.7-389-g2887ad1+2.2.7-1  amd64  PHP extension for interfacing with Redis
ii  redis-server           2:3.0.6-1                   amd64  Persistent key-value database with network interface
ii  redis-tools            2:3.0.6-1                   amd64  Persistent key-value database with network interface (client)


netstat -putan|grep redis
tcp    0   0   127.0.0.1:6379  0.0.0.0:*        LISTEN      12985/redis-server
tcp    0   0   127.0.0.1:6379  127.0.0.1:41714  ESTABLISHED 12985/redis-server


redis-server -v
Redis server v=3.0.6 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64 build=687a2a319020fa42

phpredisadmin

 
Nextcloud system check OK

nextcloud-grundeinstellungen
nextcloud-grundeinstellungen873×514 30.1 KB

What is going wrong here?
Thank you!

1 Like
2

To avoid this info messages, you need to enable APCu for CLI requests as well, to cover occ and cron.php. By default it’s just enabled for webserver requests.

echo 'apc.enable_cli=1' >> /etc/php/7.0/mods-available/apcu.ini

4 Likes
3

What should I do under centos7.2?

4

There should be a similar folder with those mods .ini foldes on centos. I would have said, as it’s by default PHP5, that it would be /etc/php5/mods-available/apcu.ini but found some source, that it might be /etc/php.d/apcu.ini.
It might be even apc.ini, not sure, just have a look inside the folders above and be sure of course assure, that the APCu module for PHP is installed.

€: Ah find / -name 'apcu.ini'? :smile:

5

In case helps others…

On BSD: /usr/local/etc/php/ext-NN-apcu.ini

1 Like
6

1,

sudo apt install php-apcu

2, Modify your:
/etc/php/X.Y/mods-available/apcu.ini like this
extension=apcu.so
apc.shm_size = “50M”

(Only those two lines. 50 MB is can be other.)

3,Edit your /your_path/nextcloud/config/config.php file by adding a new line:
‘memcache.local’ => ‘\OC\Memcache\APCu’,

(The “’\\OC\\Memcache\\APCu,” is very bad it can causes Internal Server error.
Unfortunetly the Internet is full of that double backslash comments.

(More: https://docs.nextcloud.com/server/15/admin_manual/configuration_server/caching_configuration.html#id1 )

3 Likes