Install Redis on Rocky Linux

This guide will go through how to install Redis on Rocky Linux. Redis is a distributed, in-memory key-value database, cache, and message broker with optional durability that is used as an in-memory data structure store. A variety of abstract data structures are supported by Redis, including strings, lists, maps, sets, sorted sets, HyperLogLogs, bitmaps, streams, and spatial indices.

How to Install Redis on Rocky Linux

• Update Rocky Linux packages using the command below.

sudo dnf update

• Next, install Redis on Rocky Linux using the following command.

sudo dnf install redis -y

Sample output

Dependencies resolved.
====================================================================
 Package     Architecture Version             Repository       Size
====================================================================
Installing:
 redis       x86_64       6.2.6-1.el9         appstream       1.3 M

Transaction Summary
====================================================================
Install  1 Package

Total download size: 1.3 M
Installed size: 4.7 M
Downloading Packages:
redis-6.2.6-1.el9.x86_64.rpm        581 kB/s | 1.3 MB     00:02    
--------------------------------------------------------------------
Total                               368 kB/s | 1.3 MB     00:03     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                            1/1 
  Running scriptlet: redis-6.2.6-1.el9.x86_64                   1/1 
  Installing       : redis-6.2.6-1.el9.x86_64                   1/1 
  Running scriptlet: redis-6.2.6-1.el9.x86_64                   1/1 
  Verifying        : redis-6.2.6-1.el9.x86_64                   1/1 

Installed:
  redis-6.2.6-1.el9.x86_64                                          

Complete!

• Then start Redis and enable it to start on system boot.

sudo systemctl enable redis --now

• Redis should be running, confirm using the following command.

systemctl status redis

Sample output

● redis.service - Redis persistent key-value database
     Loaded: loaded (/usr/lib/systemd/system/redis.service; enabled; vendor preset: disabled)
    Drop-In: /etc/systemd/system/redis.service.d
             └─limit.conf
     Active: active (running) since Thu 2022-09-08 11:39:21 EAT; 2min 23s ago
   Main PID: 7210 (redis-server)
     Status: "Ready to accept connections"
      Tasks: 5 (limit: 23284)
     Memory: 7.3M
        CPU: 212ms
     CGroup: /system.slice/redis.service
             └─7210 "/usr/bin/redis-server 127.0.0.1:6379"

Sep 08 11:39:21 localhost.localdomain systemd[1]: Starting Redis persistent key-value database...
Sep 08 11:39:21 localhost.localdomain systemd[1]: Started Redis persistent key-value database.

• To check the Redis version that is installed, run the command below.

redis-server -v

• Next, let’s perform a ping test to confirm Redis is working.

redis-cli

ping

Sample output

127.0.0.1:6379> ping
PONG
127.0.0.1:6379> exit

Set Redis password on Rocky Linux

• Open the Redis configuration file by running the command below.

sudo nano /etc/redis/redis.conf

In the configuration file opened above, search for requirepass foobared and uncomment it by removing the # symbol then replace foobared with your password.

# IMPORTANT NOTE: starting with Redis 6 "requirepass" is just a compatibility
# layer on top of the new ACL system. The option effect will be just setting
# the password for the default user. Clients will still authenticate using
# AUTH  as usually, or more explicitly with AUTH default 
# if they follow the new protocol: both will work.
#
# The requirepass is not compatable with aclfile option and the ACL LOAD
# command, these will cause requirepass to be ignored.
#

requirepass YourStrongPassword 

# New users are initialized with restrictive permissions by default, via the
# equivalent of this ACL rule 'off resetkeys -@all'. Starting with Redis 6.2, it
# is possible to manage access to Pub/Sub channels with ACL rules as well. The
# default Pub/Sub channels permission if new users is controlled by the 
# acl-pubsub-default configuration directive, which accepts one of these values:
#

• Restart Redis to apply changes.

sudo systemctl restart redis

• When you connect again to Redis to do the ping test you will be required to authenticate with your password.

redis-cli

ping

Sample output

127.0.0.1:6379> ping
(error) NOAUTH Authentication required.
127.0.0.1:6379> auth YourStrongPassword
OK
127.0.0.1:6379> exit

How to Uninstall Redis on Rocky Linux

• Run the following command to remove Redis from your system.

sudo dnf autoremove redis

• You have reached the end of our article. We have gone through how to install Redis on Rocky Linux.

Read more on Redis Documentation

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