In this chapter, we will cover the following recipes:
Installing the MariaDB Galera cluster
Configuring HA Proxy for the MariaDB Galera cluster
Configuring HA Proxy for high availability
Installing and configuring Pacemaker with Corosync
Configuring OpenStack services with Pacemaker and Corosync
Bonding network interfaces for redundancy
Automating OpenStack installations using Ansible – host configuration
Automating OpenStack installations using Ansible – Playbook configuration
Automating OpenStack installations using Ansible – running Playbooks