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Chapter 1. Introduction
This document provides processes for keeping Red Hat OpenStack Platform up-to-date. This document focuses on upgrades and updates that targets Red Hat OpenStack Platform 8 (Liberty).
Red Hat only supports upgrades to Red Hat OpenStack Platform 8 on Red Hat Enterprise Linux 7. In addition, Red Hat recommends the following different scenarios based on whether:
- You are using the director-based Overcloud or a manually created environment.
- You are using high availability tools to manage a set of Controller nodes in a cluster.
The Section 1.1, “Upgrade Scenario Comparison” provides descriptions of all upgrade scenarios. These scenarios allow you to upgrade to a working Red Hat OpenStack Platform 8 release and provide minor updates within that version.
1.1. Upgrade Scenario Comparison
Red Hat recommends the following upgrade scenarios for Red Hat OpenStack Platform 8. The following table provides a brief description of each.
| Method | Description |
|---|---|
| Director-Based Environments: Performing Updates to Minor Versions | This scenario is for updating from one minor version of Red Hat OpenStack Platform 8 to a newer version of Red Hat OpenStack Platform 8. This involves updating the director packages, then using the director to launch a package update on all nodes in the Overcloud. |
| Director-Based Environments: Performing Upgrades to Major Versions | This scenario is for upgrading from a major versions of Red Hat OpenStack Platform. In this case, the procedure upgrades from version 7 to version 8. This involves updating the director packages, then using the director to provide a set of upgrade scripts on each node, and then performing an upgrade of the Overcloud stack. |
| Non-Director Environments: Upgrading OpenStack Services Simultaneously | This scenario is for upgrading all packages in a Red Hat OpenStack Platform 8 environment that does not use the director for management (i.e. environments created manually). In this scenario, all packages are upgraded simultaneously. |
| Non-Director Environments: Upgrading Individual OpenStack Services (Live Compute) in a Standard Environment | This scenario is for upgrading all packages in a Red Hat OpenStack Platform environment 8 that does not use the director for management (i.e. environments created manually). In this scenario, you update each OpenStack service individually. |
| Non-Director Environments: Upgrading Individual OpenStack Services (Live Compute) in a High Availability Environment | This scenario is for upgrading all packages in a Red Hat OpenStack Platform 8 environment that does not use the director for management (i.e. environments created manually) and are using high availability tools for Controller-based OpenStack services. In this scenario, you update each OpenStack service individually. |
For all methods:
- Ensure you have enabled the correct repositories for this release on all hosts.
- The upgrade will involve some service interruptions.
- Running instances will not be affected by the upgrade process unless you either reboot a Compute node or explicitly shut down an instance.
Red Hat does not support upgrading any Beta release of Red Hat OpenStack Platform to any supported release.
1.2. Repository Requirements
Both the undercloud and overcloud require access to Red Hat repositories either through the Red Hat Content Delivery Network, or through Red Hat Satellite 5 or 6. If using a Red Hat Satellite Server, synchronize the required repositories to your OpenStack Platform environment. Use the following list of CDN channel names as a guide:
| Name | Repository | Description of Requirement |
| Red Hat Enterprise Linux 7 Server (RPMs) |
| Base operating system repository. |
| Red Hat Enterprise Linux 7 Server - Extras (RPMs) |
| Contains Red Hat OpenStack Platform dependencies. |
| Red Hat Enterprise Linux 7 Server - RH Common (RPMs) |
| Contains tools for deploying and configuring Red Hat OpenStack Platform. |
| Red Hat Satellite Tools for RHEL 7 Server RPMs x86_64 |
| Tools for managing hosts with Red Hat Satellite 6. |
| Red Hat Enterprise Linux High Availability (for RHEL 7 Server) (RPMs) |
| High availability tools for Red Hat Enterprise Linux. Used for Controller node high availability. |
| Red Hat OpenStack Platform 8 director for RHEL 7 (RPMs) |
| Red Hat OpenStack Platform director repository. Also provides some tools for use on the director-deployed Overclouds. |
| Red Hat OpenStack Platform 8 for RHEL 7 (RPMs) |
| Core Red Hat OpenStack Platform repository. |
If you have a Ceph cluster, the following repositories are also required:
| Red Hat Ceph Storage OSD 1.3 for Red Hat Enterprise Linux 7 Server (RPMs) |
| (For Ceph Storage Nodes) Repository for Ceph Storage Object Storage daemon. Installed on Ceph Storage nodes. |
| Red Hat Ceph Storage MON 1.3 for Red Hat Enterprise Linux 7 Server (RPMs) |
| (For Ceph Storage Nodes) Repository for Ceph Storage Monitor daemon. Installed on Controller nodes in OpenStack environments using Ceph Storage nodes. |
To configure repositories for your Red Hat OpenStack Platform environment in an offline network, see "Configuring Red Hat OpenStack Platform Director in an Offline Environment" on the Red Hat Customer Portal.
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