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Chapter 1. Red Hat High Availability Add-On Configuration and Management Reference Overview

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This document provides descriptions of the options and features that the Red Hat High Availability Add-On using Pacemaker supports. For a step by step basic configuration example, see Red Hat High Availability Add-On Administration.
You can configure a Red Hat High Availability Add-On cluster with the pcs configuration interface or with the pcsd GUI interface.

1.1. New and Changed Features

This section lists features of the Red Hat High Availability Add-On that are new since the initial release of Red Hat Enterprise Linux 7.

1.1.1. New and Changed Features for Red Hat Enterprise Linux 7.1

Red Hat Enterprise Linux 7.1 includes the following documentation and feature updates and changes.

1.1.2. New and Changed Features for Red Hat Enterprise Linux 7.2

Red Hat Enterprise Linux 7.2 includes the following documentation and feature updates and changes.

1.1.3. New and Changed Features for Red Hat Enterprise Linux 7.3

Red Hat Enterprise Linux 7.3 includes the following documentation and feature updates and changes.
Additionally, small clarifications and corrections have been made throughout this document.

1.1.4. New and Changed Features for Red Hat Enterprise Linux 7.4

Red Hat Enterprise Linux 7.4 includes the following documentation and feature updates and changes.

1.1.5. New and Changed Features for Red Hat Enterprise Linux 7.5

Red Hat Enterprise Linux 7.5 includes the following documentation and feature updates and changes.

1.1.6. New and Changed Features for Red Hat Enterprise Linux 7.8

Red Hat Enterprise Linux 7.8 includes the following documentation and feature updates and changes.
  • As of Red Hat Enterprise Linux 7.8, you can configure Pacemaker so that when a node shuts down cleanly, the resources attached to the node will be locked to the node and unable to start elsewhere until they start again when the node that has shut down rejoins the cluster. This allows you to power down nodes during maintenance windows when service outages are acceptable without causing that node’s resources to fail over to other nodes in the cluster. For information on configuring resources to remain stopped on clean node shutdown, see Section 9.9, “ Configuring Resources to Remain Stopped on Clean Node Shutdown (Red Hat Enterprise Linux 7.8 and later) ”.
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