Install Redis High Availability Architecture with Sentinel

Redis Sentinel is a dedicated process to automate and simplify the Redis replication failover and switchover.

In this article, we will start with 3 Nodes. We will have two Redis instances on two different nodes – 1 master and 1 replica (or slave). Sentinel will be co-located on those 2 nodes, plus an additional node on one of our web servers.

Normally you would co-locate a Redis instance on the web/application server and access it via localhost or through a UNIX socket file. This is the straightforward way to incorporate Redis into the application.

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How To Install and Secure Redis on Ubuntu

In order to get the latest version of Redis, we will use apt to install it from the official Ubuntu repositories. Update your local apt package cache and install Redis by typing: This will download and install Redis and its dependencies. If on A regular Ubuntu distribution, change the configuration for the server to run … Read more