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I have a successfully running and memcache.so and memcached.so and both are shown in phpinfo, I have set them in correct php.ini file and restarted all services. 

sudo service memcached status

* memcached.service - memcached daemon
   Loaded: loaded (/lib/systemd/system/memcached.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2017-02-11 22:16:41 UTC; 7min ago
 Main PID: 12367 (memcached)
    Tasks: 6
   Memory: 548.0K
      CPU: 27ms
   CGroup: /system.slice/memcached.service
           `-12367 /usr/bin/memcached -m 128 -p 11211 -u memcache -l 127.0.0.1

settings.php:

$settings['memcache']['servers'] = ['127.0.0.1:11211' => 'default'];
$settings['memcache']['bins'] = ['default' => 'default'];
$settings['memcache']['key_prefix'] = '';
$settings['cache']['default'] = 'cache.backend.memcache';

drush en memcache:

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "cache.backend.memcache". Did you mean one of these: "cache.backend.database", "cache.backend.apcu", "cache.backend.php", "cache.backend.memory"? in /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php on line 157 #0 /var/www/d8.com/htdocs/core/lib/Drupal/Core/Cache/ChainedFastBackendFactory.php(79): Drupal\Component\DependencyInjection\Container->get('cache.backend.m...')
#1 /var/www/d8.com/htdocs/core/lib/Drupal/Core/Cache/CacheFactory.php(83): Drupal\Core\Cache\ChainedFastBackendFactory->get('bootstrap')
#2 [internal function]: Drupal\Core\Cache\CacheFactory->get('bootstrap')
#3 /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php(254): call_user_func_array(Array, Array)
#4 /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php(177): Drupal\Component\DependencyInjection\Container->createService(Array, 'cache.bootstrap')
#5 /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php(494): Drupal\Component\DependencyInjection\Container->get('cache.bootstrap', 1)
#6 /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php(236): Drupal\Component\DependencyInjection\Container->resolveServicesAndParameters(Array)
#7 /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php(177): Drupal\Component\DependencyInjection\Container->createService(Array, 'module_handler')
#8 /var/www/d8.com/htdocs/core/lib/Drupal/Core/DrupalKernel.php(544): Drupal\Component\DependencyInjection\Container->get('module_handler')
#9 /var/www/d8.com/htdocs/core/lib/Drupal/Core/DrupalKernel.php(702): Drupal\Core\DrupalKernel->preHandle(Object(Symfony\Component\HttpFoundation\Request))
#10 phar:///usr/local/bin/drush/lib/Drush/Boot/DrupalBoot8.php(150): Drupal\Core\DrupalKernel->prepareLegacyRequest(Object(Symfony\Component\HttpFoundation\Request))
#11 phar:///usr/local/bin/drush/includes/bootstrap.inc(354): Drush\Boot\DrupalBoot8->bootstrap_drupal_full()
#12 phar:///usr/local/bin/drush/includes/bootstrap.inc(473): drush_bootstrap(5, 6)
#13 phar:///usr/local/bin/drush/lib/Drush/Boot/BaseBoot.php(59): drush_bootstrap_to_phase(6)
#14 phar:///usr/local/bin/drush/includes/preflight.inc(66): Drush\Boot\BaseBoot->bootstrap_and_dispatch()
#15 phar:///usr/local/bin/drush/includes/startup.inc(458): drush_main()
#16 phar:///usr/local/bin/drush/includes/startup.inc(365): drush_run_main(false, '/', 'Phar detected. ...')
#17 phar:///usr/local/bin/drush/drush(114): drush_startup(Array)
#18 /usr/local/bin/drush(10): require('phar:///usr/loc...')
#19 {main}
Drush command terminated abnormally due to an unrecoverable error.                                                                                                                                  [error]
Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "cache.backend.memcache". Did you mean one of these: "cache.backend.database", "cache.backend.apcu", "cache.backend.php", "cache.backend.memory"? in Drupal\Component\DependencyInjection\Container->get() (line 157 of /var/www/d8.com/htdocs/core/lib/Drupal/Component/DependencyInjection/Container.php).

So as you can see I cannot manage to enable the memcache module.

nginx php7.0-fpm

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1 Answer 1

Reset to default
5

You need to enable the memcache module before configuring it. The services only exist when a module is enabled.

At least with the redis module, it is also possible to manually register it to the classloader and explicitly add the services.yml file, but I don't know if that's true for memcache as well. See https://docs.platform.sh/frameworks/drupal8/redis.html

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10
  • Module memcache doesn't meet the requirements to be enabled. [error] (Currently using Extensions not available version Either the memcache or memcached extensions must be installed in order to use memcache integration.)
    – user3108268
    Feb 12, 2017 at 9:39
  • Yes, then you need to enable one of those two extensions
    – Berdir
    Feb 12, 2017 at 9:43
  • But they are enabled like I posted before. How do you test if they are enabled?
    – user3108268
    Feb 12, 2017 at 9:49
  • Well, PHP thinks they are not. Maybe you have different php.ini files for php fpm and CLI. Try php -m, try php -i and check the php.ini location
    – Berdir
    Feb 12, 2017 at 9:58
  • @user3108268 admin/reports/status/php will also show if either is enabled.
    – mpdonadio ♦
    Feb 12, 2017 at 20:03

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