Support Policies for RHEL High Availability Clusters

Contents

• Overview
  • Applicable Environments
  • Introduction
• Policies
  • Cluster Releases, Components, and Packages
  • Cluster Platforms and Architectures
  • Cluster Layout and Membership
  • Network Communications
  • Storage
  • Fencing/STONITH
  • Cluster-Managed Resources and Applications
  • Antivirus in High-Availability clusters

Overview

Applicable Environments

• Red Hat Enterprise Linux (RHEL) with the High Availability Add-On

Introduction

This guide offers Red Hat's collection of support policies, requirements, and limitations for RHEL High Availability clusters in one location. Users of RHEL High Availability clusters should adhere to these policies in order to be eligible for support from Red Hat with the appropriate product support subscriptions.

Because RHEL High Availability is a collection of software deployed on top of the Red Hat Enterprise Linux operating system, policies, requirements, and limitations applicable to RHEL are also applicable to RHEL High Availability. Please remember to consult the official RHEL & RHEL High Availability product documentation and release notes for additional coverage on these products.

Policies

Cluster Releases, Components, and Packages

• Subscriptions, Support Services, and Software Access
• Releases and package versions
• High Availability components
  • Cluster Stacks and Resource Managers
  • corosync
  • DLM
  • corosync-qdevice and corosync-qnetd
  • booth cluster ticket manager

Cluster Platforms and Architectures

• Platforms and architectures for cluster nodes

  • IBM Cloud Bare Metal Servers as Cluster Members
  • IBM Power Servers as Cluster Members
  • IBM z Systems as Cluster Members
  • x86 and x86_64 Servers as Cluster Members

• General conditions with virtualized cluster members

  • Alibaba Cloud Instances as Cluster Members
  • Amazon Web Services (AWS) EC2 Instances as Cluster Members
  • Google Cloud Platform Virtual Machines as Cluster Members
  • IBM Cloud Virtual Server (VS) Virtual Machines as Cluster Members
  • IBM Power Systems Virtual Server (VS) Virtual Machines as Cluster Members
  • IBM Cloud Virtual Server for VPC as Cluster Members
  • Microsoft Azure Virtual Machines as Cluster Members
  • Microsoft Hyper-V Virtual Machines as Cluster Members
  • Nutanix AHV Virtual Machines as Cluster Members
  • OpenStack Virtual Machines as Cluster Members
  • RHEL libvirt/KVM virtual machines as cluster members
  • RHV virtual machines as cluster members
  • VMware virtual machines as cluster members
  • Xen virtual machines as Cluster Members
  • Red Hat OpenShift Virtualization Virtual Machines as Cluster Members

Cluster Layout and Membership

• Membership and cluster size
• RHEL cluster deployments spanning multiple sites

Network Communications

• Cluster interconnect network interfaces
• Cluster interconnect network latency
• Transport protocols
• Firewall ports

Storage

• Support Policies for RHEL Resilient Storage
• Storage compatibility
• LVM in a cluster
• Support Policies for RHEL High Availability Clusters - Management of Highly Available Filesystem Mounts

Fencing/STONITH

• General Requirements for Fencing/STONITH
• Available Fencing Types and Fencing Agents for a Red Hat High-Availability Cluster
• sbd and fence_sbd
• Specific fence agent policies
  • fence_azure_arm
  • fence_scsi / fence_mpath
  • fence_vmware_soap
  • fence_vmware_rest
  • fence_kubevirt

Cluster-Managed Resources and Applications

• General policies for cluster-managed resources and applications
• ctdb general policies
• Managed resources
  • LVM in a cluster
  • Management of Highly Available Filesystem Mounts
  • Management of an Oracle Database in a cluster
  • Management of Oracle ASM Services in a cluster
  • Management of a tomcat Server in a cluster
  • Management of a mariadb/mysql database server in a cluster
  • Management of IBM Db2 for Linux, Unix, and Windows in a cluster
  • Management of a PostgreSQL Database in a Cluster
  • Management of SAP Netweaver in a cluster
  • Management of SAP HANA in a cluster
  • Management of SAP S4/HANA in a cluster
  • Management of containers in a cluster

Antivirus in High-Availability clusters

• General Policies for Antivirus in High-Availability clusters