“Connection refused” (another one)

Resolved ex0danify
(@ex0danify)

3 years, 10 months ago
Hi,
I’m trying to setup this plugin with a remote redis server, my configuration is as follows:

wp-config:
```
WP_REDIS_HOST: "oam-db.skyxxxxxx.com"
WP_REDIS_PORT: 6379
WP_REDIS_TIMEOUT: 1
WP_REDIS_READ_TIMEOUT: 1
WP_REDIS_PASSWORD: ["gaxxx","••••••••"]
```
Redis server log (When Loading my WP site):
```
32323:M 28 Jul 2022 12:04:30.183 - Accepted 95.217.xxx.xxx:35880
32323:M 28 Jul 2022 12:04:30.262 - Client closed connection
```
Redis Object Cache – Diagnostics:
```
Status: Not connected
Client: PhpRedis (v5.3.7)
Drop-in: Valid
Disabled: No
Ping: 
Errors: [
    "Connection refused"
]
PhpRedis: 5.3.7
Relay: Not loaded
Predis: Not loaded
Credis: Not loaded
PHP Version: 8.0.21
Plugin Version: 2.1.6
...
```
Why am I getting a connection refused error, when the request clearly reaches the redis server? I also tried setting a bogus username in wp-config to see if the error changes, and is does (so my auth array is correctly set).

I’am also running another web application on the same server as my wordpress site without any problems (using the same redis host and same redis port).

any Ideas?

Cheers
Lucas

Viewing 7 replies - 1 through 7 (of 7 total)

Plugin Author Till Krüss
(@tillkruess)

3 years, 10 months ago

Why am I getting a connection refused error, when the request clearly reaches the redis server?

Maybe it’s hitting the timeout?

Thread Starter ex0danify
(@ex0danify)

3 years, 10 months ago

Thanks for your response.
I tried setting the timeouts to 30 seconds, same behavior :/

Any more ideas?

Plugin Author Till Krüss
(@tillkruess)

3 years, 10 months ago

Can you connect from your web server to Redis via redis-cli?
Thread Starter ex0danify
(@ex0danify)

3 years, 10 months ago
Yes,
I can connect from my webserver to my redis database server via redis-cli:
```
.../var/www/html/skyxxxx-xxx.com/gdb # redis-cli -h oam-db.skyxxxxxx.com -p 6379
oam-db.skyxxxxxx.com:6379> CONFIG GET databases
1) "databases"
2) "16"
oam-db.skyxxxxxx.com:6379>
```
Im absolutely clueless whats going wrong with wordpress here 🙁
Plugin Author Till Krüss
(@tillkruess)

3 years, 10 months ago
That’s weird. Maybe it’s PHP itself. Can you try running that on your server via HTTP?
```
<?php

ini_set('display_errors', 1);
error_reporting(E_ALL);

$redis = new Redis('oam-db.skyxxxxxx.com', 6379, 5.0, '', 100, 5.0);
$redis->auth(["gaxxx", "••••••••"]);

var_dump(
    $redis->ping('pong')
);
```
Thread Starter ex0danify
(@ex0danify)

3 years, 10 months ago
Nothing unusual so far. I had to modify your script though, cause php-redis does not take arguments in the constructor class. I added a second line to actually connect to my server.

Modified script:
```
<?php

ini_set('display_errors', 1);
error_reporting(E_ALL);

$redis = new Redis();
$redis->connect('oam-db.skyxxxxxx.com', 6379, 5.0, '', 100, 5.0);
$redis->auth(["gaxxx", "••••••••"]);

var_dump(
    $redis->ping('pong')
);
```
Result:
```
string(4) "pong"
```
Result from your unmodified script:
```
PHP Fatal error:  Uncaught ArgumentCountError: Redis::__construct() expects exactly 0 arguments, 6 given in /var/www/html/skyxxxxxx.com/redis_test.php:6
Stack trace:
#0 /var/www/html/skyxxxxxx.com/redis_test.php(6): Redis->__construct()
#1 {main}
  thrown in /var/www/html/skyxxxxxx.com/redis_test.php on line 6
```
Thanks for taking your time with me by the way!
Plugin Author Till Krüss
(@tillkruess)

3 years, 10 months ago

Ah, thanks, I was thinking Relay syntax 😅

This is odd, so PHP can connect, what exactly happens when you set the WP_REDIS_HOST and such in WordPress?

Viewing 7 replies - 1 through 7 (of 7 total)

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