base_redis

Ansible-role to install Redis5 Sentinel on Centos/RHEL 7 (using Satellite). This role has been developed to cater analytics of a high-volume website with Matomo. We use Redis hosts with 64Gb to cache the event queues before processing into MariaDB.

Requirements

Yum with Software Collections, this role has been developed for on-prem use.

Role Variables

See defaults/main.yml

Dependencies

In your inventory define hosts like:

[redis_master]
node0.example.com

[redis_slave]
node1.example.com
node2.example.com

[redis_sentinel]
node0.example.com
node1.example.com
node2.example.com

Example Playbook

---
# Install Redis Sentinel on 3 RHEL7 VMs

- name: Discover Redis master
  hosts: redis_server
  become: true
  roles:
    - {role: base_redis, tags: master, slave}

- name: Install Redis master
  hosts: redis_leader
  become: true
  vars:
    redis_server: true
  roles:
    - {role: base_redis, tags: master}

- name: Install Redis slaves
  hosts: redis_server
  become: true
  vars:
    redis_server: true
  roles:
    - {role: base_redis, tags: slave}

- name: Configure Redis sentinel nodes
  hosts: redis_sentinel
  become: true
  vars:
    redis_sentinel: true
    redis_sentinel_monitors:
      - name: mymaster
        # host: "{{ groups.redis_master[0] }}"
        host: "{{ master_hostname }}"
        port: "{{ redis_host }}"
        quorum: "{{ groups.redis_server|length -1 }}"
  roles:
    - {role: base_redis, tags: sentinel}

License

MIT

Author Information

@bbaassssiiee