memcached related error after upgrade to 2.3 from 2.2.6

[alexrus76g]

i had memcached session handling enabled on 2.2.6 after upgrade I ran into problem

[2018-11-30 01:07:57] main.CRITICAL: Warning: SessionHandler::read(): open(127.0.0.1:11211/sess_f56733b831d6321752b41db7382b9d08, O_RDWR) failed: No such file or directory (2) in../vendor/magento/framework/Session/SaveHandler/Native.php on line 22 {"exception":"[object] (Exception(code: 0): Warning: SessionHandler::read(): open(127.0.0.1:11211/sess_f56733b831d6321752b41db7382b9d08, O_RDWR) failed: No such file or directory (2) in ../vendor/magento/framework/Session/SaveHandler/Native.php on line 22 at ../vendor/magento/framework/App/ErrorHandler.php:61)"} []

disabling session by memcached resolved

how to enable it again?

[Manthan Dave]

Hi @alexrus76g

You can enable memcache again by following the below steps : 

1. Using your preferred text editor, navigate to the directory where you installed Magento, and then open the app/etc/env.php file.
2. Locate the following section in the env.php file:
   

   'session' => [
       'save' => 'files'
     ],

3. Modify this section as follows:
   

   'session' => [
       'save' => 'memcached',
       'save_path' => '127.0.0.1:11211' // your ip and port number of memcached installed
     ],

4. Save your changes to the env.php file. Memcached is now enabled.

For more details refer this link - https://www.a2hosting.in/kb/installable-applications/optimization-and-configuration/magento1/configu...

Hope it helps !

[alexrus76g]

Enabling memcached gives error that i gave in the initial post.

[Manthan Dave]

Hi @alexrus76g

For this issue , i would suggest you to look into this link - https://devdocs.magento.com/guides/v2.2/install-gde/trouble/php/tshoot_session.html

Explained well to work around on the same issue !

Hope it helps !

[alexrus76g]

That is what i did by going back to saving sessions in file, but its not a
workaround, rather this is reverting to default magento behavour. What im
trying to get soution for is how to start using memcached again

[sibble]

I'm also experiencing the same problem.  Does anyone have a solution?

I can confirm the site is working when switched back to saving sessions via files.

[sibble]

I tested and memcached is working (with a standalone php script.)

[AveoTrade]

Hi, the support for memcache was dropped in magento 2.3.0.

I have created plugin which allows use of memcache for session.

Documentation is available here: https://connect20.aveo-trade.cz/docs/user-guide-memcached-2.3.0.pdf

[Stuart M]

Consider switching to the Magento recommended session storage Redis ->
https://devdocs.magento.com/guides/v2.3/config-guide/redis/redis-session.html

Very simple to setup and works just as good if not better than Memcache.

[dmitrij_rebrov]

Confirm. I have same error in 2.3.1