Install Redis on Plesk Centos 7 Server

Install Redis on Server Base

Enable Redis PHP Extension from Plesk

Reference KB: 

https://bobcares.com/blog/install-redis-on-plesk/

https://supporthost.in/install-redis-on-a-plesk-server/

Install Redis on Server Base

Step 1: Enable EPEL Repository

Step 2: Install Redis

Step 3: Start the Redis Service

Step 4: Check Redis Service on Port on 6379

Enable Redis PHP Extension from Plesk

Step 1: Check the PHP Version and the PHP Handler the hosted website is using

Step 2: Click on Tools & Settings >> PHP Settings

Step 3: Click on the appropriate PHP Handler

Step 4: Enable the Redis Extension