Connection error Predis\Connection

Can you try using PhpRedis instead?

define('WP_REDIS_CLIENT', 'phpredis');

Have been tryed! This is my configuration:

define( 'WP_REDIS_CLIENT', 'phpredis' );
define( 'WP_REDIS_SCHEME', 'unix' );
define( 'WP_REDIS_PATH', '/var/run/redis/redis.sock' );
define( 'WP_REDIS_DATABASE', 0 );

Stack trace:
#0 /var/www/www.example/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php(154): Predis\Connection\StreamConnection->createStreamSocket()
#1 /var/www/www.example/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php(80): Predis\Connection\StreamConnection->tcpStreamInitializer()
#2 /var/www/www.example/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/AbstractConnection.php(80): Predis\Connection\StreamConnection->createResource()
#3 /var/www/www.example/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php(230): Predis\Connection\AbstractConnection->connect()
#4 /var/www/www.example/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Client.php(225): Predis\Connection\StreamConnection->connect()
#5 /var/www/www.example/www/wp-content/plugins/redis-cache/includes/class-predis.php(127): Predis\Client->connect()
#6 /var/www/www.example/www/wp-content/plugins/redis-cache/includes/class-plugin.php(596): Rhubarb\RedisCache\Predis->connect()
#7 /var/www/www.example/www/wp-content/plugins/redis-cache/includes/ui/tabs/overview.php(16): Rhubarb\RedisCache\Plugin->check_redis_connection()
#8 /var/www/www.example/www/wp-content/plugins/redis-cache/includes/ui/class-tab.php(167): include('...')
#9 /var/www/www.example/www/wp-content/plugins/redis-cache/includes/ui/settings.php(60): Rhubarb\RedisCache\UI\Tab->display()
#10 /var/www/www.example/www/wp-content/plugins/redis-cache/includes/class-plugin.php(204): require_once('...')
#11 /var/www/www.example/www/wp-includes/class-wp-hook.php(324): Rhubarb\RedisCache\Plugin->show_admin_page()
#12 /var/www/www.example/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#13 /var/www/www.example/www/wp-includes/plugin.php(517): WP_Hook->do_action()
#14 /var/www/www.example/www/wp-admin/admin.php(259): do_action()
#15 /var/www/www.example/www/wp-admin/options-general.php(10): require_once('...')
#16 {main}
  thrown

• This reply was modified 1 year, 3 months ago by Jora Vartanov.
• This reply was modified 1 year, 3 months ago by Jora Vartanov.

Thanks for testing that. I looks like your PHP installation is missing the the Sockets extension: https://www.php.net/manual/en/intro.sockets.php

Are you managing the server yourself, or do you use a managed hosting provider?

Is my server, self managment!

In that case, depending how you install PHP, you may need to recompile it with the --enable-sockets flag: https://stackoverflow.com/questions/6137823/fatal-error-call-to-undefined-function-socket-create

Sockets are needed to allow the PHP process to communicate with Redis Server.

Hi again! My PHP installation have sockets enabled!

1. Using another plugin, connection to redis was succesifuly, and all working good(i want this plugin).
2. using php -m | grep sockets, i got: sockets,
3. I think, the problem is not the sockets!
4. Thx in advance!

• This reply was modified 1 year, 3 months ago by Jora Vartanov.

HI! I found the answer to the first problem! These were the permissions I had to give to redis, using the command usermod -a -G redis username.
Now the plugin works, I see the statistics, from the redic-cli monitor I see the traffic, I see everything, the only problem is that I can’t access the plugin’s main page! Here are two screenshots:

Working dshboard!

2023/11/17 20:46:21 [error] 7981#7981: *106 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Error: Call to undefined function Predis\Connection\stream_socket_client() in /var/www/example.com/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php:108
Stack trace:
#0 /var/www/example.com/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php(184): Predis\Connection\StreamConnection->createStreamSocket()
#1 /var/www/example.com/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php(83): Predis\Connection\StreamConnection->unixStreamInitializer()
#2 /var/www/example.com/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/AbstractConnection.php(80): Predis\Connection\StreamConnection->createResource()
#3 /var/www/example.com/www/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/StreamConnection.php(230): Predis\Connection\AbstractConnection->con" while reading upstream, client: 185.285.171.62, server: example.com.it, request: "GET /wp-admin/options-general.php?page=redis-cache HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/example.com.it.sock:", host: "www.example.com.it", referrer: "https://www.example.com.it/wp-admin/index.php"

Server configuration:

Linux CentOS 8;

Nginx 1.23;

Percona MySQL;

PHP-FPM 8.1;

Redis server v=6.0.20 malloc=jemalloc-5.1.0 bits=64 build=8d6796f46240ad60

• This reply was modified 1 year, 3 months ago by Jora Vartanov.
• This reply was modified 1 year, 3 months ago by Jora Vartanov.
• This reply was modified 1 year, 3 months ago by Jora Vartanov.

That’s odd. Maybe it’s a bug in the Predis library.

Can you create a test file called socket-test.php with this content:

<?php
var_dump(function_exists('stream_socket_client'));

And then request it via CLI or HTTP and post the output here?

Can you create a test file called?socket-test.php?with this content:

An interesting thing!
Using HTTP Request, from browser(https://www.ex.com/socket-test.php), I get: bool(false),
Using wp eval-file socket-test.php, I get: bool(true);

That means that your PHP version running in FPM doesn’t have the sockets extension compiled.

That means that your PHP version running in FPM doesn’t have the sockets extension compiled.

But, im conected to redis with your plugin, and i recieved data, and is working good! The only problem is you dashboard… And how to check if my php have been coompiled with sockets?

Aaaahh, I understand. Can you post your diagnostics from Settings > Redis?

Julie

(@julieadrienne)

Aaaahh, I understand. Can you post your diagnostics from?Settings > Redis?

We’ll fix this in an update this week ??