🚀 Ansible Redis Cluster Deployment 🚀

Automate the deployment of a Redis cluster using Ansible! Deploy multiple instances on the same server with systemd and enjoy an interactive initialization prompt.

READ THIS BEFORE USING ⚠️

The main branch is no longer functional and is only used for interviews, which provides great material.
use the master branch which works flawlessly

Prerequisites

• Ansible installed on the machine from which you run the playbook.
• redis-tools package installed so Ansible can initialize the cluster
• Target servers with SSH access.
• Ensure that the necessary ports (e.g., 6379, 16379) are open on the target servers.

Usage

1. Clone this repository:

   git clone https://github.com/SmartechOpenSource/ansible_redis-cluster.git
   cd ansible_redis-cluster/playbooks
   

2. Update the inventory.ini and playbook.yml file:

   we want 2 Redis servers on each instance.
   remember redis needs at least 3 masters in a cluster with replication

   playbook.yml
   
     vars: 
       - redis_instances_per_host: 2 
   
   
   inventory.ini
   Keep the Formatting as is and add details of your target instances.
     [redis_hosts]
     redis-1 ansible_host=192.168.1.2
     redis-2 ansible_host=192.168.1.3
     redis-3 ansible_host=192.168.1.4
   

3. Run the playbook and wait for the cluster init confirmation

   ansible-playbook -i inventory.ini playbook.yml
   

4. wait for it to finish

   this is a sample of what you get at the and

   TASK [redis_cluster : Display Redis cluster initialization command]
   "msg": "i will use this command to init the cluster: redis-cli --cluster create 192.168.1.2:6379 192.168.1.2:6380 192.168.1.3:6379 192.168.1.3:6380 192.168.1.4:6379 192.168.1.4:6380 --cluster-replicas 1 -a password delegate_to: 192.168.1.2:6379"
   
   TASK [redis_cluster : Confirm Initialization] 
   [redis_cluster : Confirm Initialization]
   Redis cluster configuration complete. Do you want to initialize the cluster now? (y/n):