WORK IN PROGRESS
Heartbeat
Heartbeat is a project from Linux-HA. The goal is to provide a High Availability clustering solution for Linux. Heartbeat is the daemon which provides the cluster infrastructure. In order to be useful, Heartbeat needs to be combined with a Cluster Resource Manager (CRM), which is the one in charge of starting and stopping the services (Web, DNS, Database, File servers and/or IP Addresses) to make them Highly Available.
Through the years, Heartbeat has evolved and has different types of configurations:
- Heartbeat V1: This type of configuration uses the Version 1 Cluster Resource Manager. This is also known as the legacy Heartbeat. It allows us to configure two cluster node in active / passive or active / active configurations.
- Heartbeat V2: This type of configuration is related to the use of the version 2 Cluster Resource Manager. It allows us to configure two or more nodes in active / passive or active / active configurations.
- Heartbeat 2.99.x + Pacemaker: Since Heartbeat 2.99.x, the version 2 Cluster Resource Manager has been removed from the code, and a new project was started. This project is called Pacemaker.
Install
To get started with Heartbeat, please install the following package. From a terminal enter:
sudo apt-get install heartbeat-2
Configuration