redis cache with passwort – fails

For completeness: These values I put inside wp-config.php:
define(‘WP_REDIS_SCHEME’, ‘unix’);
define(‘WP_REDIS_PATH’, ‘/var/run/redis/redis.sock’);
define(‘WP_REDIS_PORT’, 0 );
define(‘WP_REDIS_DATABASE’, ‘0’);
define(‘WP_REDIS_PASSWORD’, ‘*****************************’);

Tried with varying combinations of with and without Port, with and without Database, With REDIS_PATH and REDIS_HOST… Nothing works. The above is in right now and when I click on “activate” the site goes down. WIth the parameters in this update the message is sligtly different from what I posted earlier:

Error establishing a Redis connection
NOAUTH Authentication required.
WordPress is unable to establish a connection to Redis. This means that the connection information in your wp-config.php file are incorrect, or that the Redis server is not reachable.

• Is the correct Redis host and port set?
• Is the Redis server running?

If you need help, please read the installation instructions.
To disable Redis, delete the object-cache.php file in the /wp-content/ directory.

So now it is “Authentication required which is funny, I provided the password…

BEFORE clicking on “activate”, this is what the overview page shows:
Status: Nicht aktiviert – Not activated
Dateisystem: Beschreibbar – Writeable
Redis: Erreichbar – Reachable

• This reply was modified 3 weeks, 2 days ago by smartysmart34.

Hello Till, thank you for looking into my issue. A bit of context before some paste:

My setup has been up and running with Redis (no password) for quite some time now. In an attempt to further harden things, I revisited some of the settings, including the introduction of a redis password.
WordPress is running in a separate PHP-Pool, with a separate user, but this was also the case before the password introduction. The wordpress php-pool-user is member of the redis group, just like the nextcloud user.
I even removed some special characters from the Password to make sure it is not interfering with string-operations. With no success.

I have been testing further. This is what the bottom part of my wp-config.php looks like right now:

define('FS_METHOD', 'direct');

/*define( 'WP_ALLOW_REPAIR', true );*/

//define( 'WP_REDIS_HOST', '127.0.0.1' );
//define( 'WP_REDIS_PORT', 6379 );
//define( 'WP_REDIS_PASSWORD', 'PwdFRedis_Cbr1100xx!!_4711' );

//define('WP_REDIS_CLIENT', 'pecl');
define( 'WP_REDIS_CLIENT', 'predis' );
define('WP_REDIS_SCHEME', 'unix');
define('WP_REDIS_PATH', '/var/run/redis/redis.sock');
define('WP_REDIS_PORT', null );
define('WP_REDIS_DATABASE', '1');
//define('WP_REDIS_HOST', '/var/run/redis/redis.sock');
define('WP_REDIS_PASSWORD', '***************************');
//define('WP_REDIS_PORT', 0 );

/* Das war’s, Schluss mit dem Bearbeiten! Viel Spaß beim Bloggen. */
/* That's all, stop editing! Happy blogging. */

This is, what the plugin-diagnosis gives me in the WP-Admin panel:

Status: Nicht aktiviert
Client: predis
Drop-in: Not installed
Disabled: No
PhpRedis: 6.2.0
Relay: Not loaded
Predis: 2.4.0
Credis: Not loaded
PHP Version: 8.4.24
Plugin Version: 2.8.0
Redis Version: Unknown
Multisite: No
Metrics: Disabled
Metrics recorded: 0
Filesystem: Writable
WP_REDIS_CLIENT: "predis"
WP_REDIS_SCHEME: "unix"
WP_REDIS_PATH: "/var/run/redis/redis.sock"
WP_REDIS_PORT: null
WP_REDIS_DATABASE: "1"
WP_REDIS_PLUGIN_PATH: "***************/wp-content/plugins/redis-cache"
WP_REDIS_PASSWORD: ••••••••
Drop-ins: []

The Overview still goes:

Status: Nicht aktiviert
Dateisystem: Beschreibbar
Redis: Erreichbar

When I click on “Activate” -> Site is down… Same message

What else could influence this? Do you need some specific information?

Thank you for your support, I really appreciate it.
Cheers
Martin

Yes I tried, No – not differently. Same message: Authentication required.

What else can I provide to help investigating?

i am using App Armor but that has also been there from the beginning. And as the redistest.php I briefly had in the root directory was handeled by the same wordpress php-pool user and succeeded connecting with the socket and password from wp-config, I think I can rule that one out.

Also, aa-logprof does not show any pending audit log entries.

srwxrwx— 1 redis redis 0 18. Sep 10:01 redis.sock

Kind regards,

Martin

• This reply was modified 3 weeks ago by smartysmart34.
• This reply was modified 3 weeks ago by smartysmart34.