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Redis package is not included in the default CentOS repositories. It can be installed from the Remi repository.

In order to install Redis, you need to have root permission.

STEP 1. Enabling the Remi repository

sudo yum install epel-release yum-utils
sudo yum install
sudo yum-config-manager --enable remi

STEP 2. Install the Redis package by typing:

sudo yum install redis

STEP 3. Once the installation is completed, start the Redis service and enable it to start automatically on boot with:

sudo systemctl start redis
sudo systemctl enable redis

You can check the status of the service by:

sudo systemctl status redis

If you face any technical issue in using redis from remote connection, you will need to run below:

sudo sed -i 's/bind' /etc/redis.conf
sudo sed -i 's/protected-mode yes/protected-mode no/gi' /etc/redis.conf
sudo /usr/sbin/setsebool httpd_can_network_connect=1

Below shell script is useful, when you monitor Redis status on your CentOS terminal
for i in {0..1024}
        redis-cli info clients
        sleep 1

Or you can check its status as:

redis-cli --stat