OpenLiteSpeed WordPress + Managed Redis. Connection Test: Failed

Posted on September 8, 2020

Hello,

I have created a droplet using the OpenLiteSpeed WordPress 1-Click image. I have also created a Managed Redis DB to use for object cache, however I am unable to connect the bundled LSCache WordPress plugin to the Redis DB.

I add the host, port, user and password and neither the public nor private networks seem to work. All I get from the plugin is Connection Test: Failed.

Any ideas what might be going wrong?

Thank you!

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PSNick

September 8, 2020

Accepted Answer

It looks like redis-cli doesn’t support SSL, so you need to take a few extra steps:

sudo apt update
sudo apt install redis-tools stunnel4

sudo nano /etc/default/stunnel4

Add the following line:
ENABLED=1


sudo nano /etc/stunnel/stunnel.conf

Add the following lines changing the host and port:
fips = no
setuid = nobody
setgid = nogroup
pid = /redis/pids/stunnel.pid
debug = 7
delay = yes
[redis-cli]
  client = yes
  accept = 127.0.0.1:8000
  connect = REDIS_HOST:REDIS_PORT

sudo mkdir /redis
cd /redis
sudo mkdir pids
sudo chown -R nobody:nogroup pids/
sudo systemctl restart stunnel4

Testing if it worked:

sudo redis-cli -h localhost -p 8000 -a PASSWORD
ping

qtwrk

September 8, 2020

try this script

<?php
 
$redis = new Redis();
//Connecting to Redis
$redis->connect('hostname', port);
$redis->auth('password');
 
if ($redis->ping()) {
        echo "PONGn";
}
 
?>

replace hostname , port and password to your own information

then access it , see if it connects