Error establishing a Redis connection

Hey there! Sorry, I don’t follow. Who are you hosting with?

Hello,

we are a customer of Easyname.at

It looks like they do support Redis Object Cache.

Can you ask their support team to take a look at your wp-config.php file to ensure it’s all configured correctly?

Hello Till,
our wp-config.php was configurated by the support team.
After that the Redis was reachable, but we had the reported error…

Kind regads,
Johannes

I can connect easily using SSH (port 10844) and can access the Redis server using the socket directory.

The wp_config.php has been expanded to include the following

define('WP_REDIS_PATH', '/OurRedisAddress');
define('WP_REDIS_PORT', '6379');
define('WP_REDIS_DATABASE', '0');
define('WP_REDIS_SCHEME', 'unix');

The connection exists And the diagnosis shows the following

Diagnostics shows this

Status: Nicht aktiviert
Client: 
Drop-in: Not installed
Disabled: No
PhpRedis: 5.3.7
Relay: Not loaded
Predis: 2.1.2
Credis: Not loaded
PHP Version: 8.1.18
Plugin Version: 2.5.1
Redis Version: Unknown
Multisite: No
Metrics: Disabled
Metrics recorded: 0
Filesystem: Writable
WP_REDIS_SCHEME: "unix"
WP_REDIS_PATH: "OurRedisAddress"
WP_REDIS_PORT: "6379"
WP_REDIS_DATABASE: "0"
WP_REDIS_PLUGIN_PATH: "/Installationpath/wp-content/plugins/redis-cache"
Drop-ins: [
    "advanced-cache.php v by "
]

But after activation it shows the error again

How can we fix this?

Kind regards,
Johannes

Hi Johannes,

In that case the Redis socket is not reachable.

You can try this code snippet, and remove WP_REDIS_PORT entirely.

define( 'WP_REDIS_SCHEME', 'unix' );
define( 'WP_REDIS_PATH', '/path/to/redis.sock' );

If that does not resolve it, you need to ask your hosting staff to provide the correct path the Redis socket.

Hello Till,
I tried it, but it didn’t work.
However, I found the solution by editing the port in wp_config.php (instead 6379 with 0)…

Thanks for your help!
Kind regards,
Johannes