Even-numbered minor releases (e.g., OpenShift Container Platform 4.12, 4.14, 4.16) typically qualify for Extended Update Support (EUS), offering longer stability periods that are essential for mission-critical applications.
Lifecycle phase details
Full support
This phase starts when a minor version is generally available (GA) and lasts for 6 months, or 90 days after the GA of the next minor release, whichever is later.
During Full Support, Critical and Important Security Advisories (RHSAs) are released as they become available. Urgent and Selected High Priority Bug Fix Advisories (RHBAs) are also released, while other fixes and qualified patches may be provided through periodic updates. To receive security and bug fixes, customers are expected to upgrade to the most current supported micro (4.x.z) version.
Maintenance support
This phase begins after the Full Support phase and concludes 18 months after the minor version's GA. In this phase, Critical and Important RHSAs are released as they become available, and Urgent and Selected High Priority RHBAs may be released. Other Bug Fix and Enhancement Advisories (RHEAs) might be released at Red Hat’s discretion but should not be expected.
After the Maintenance Support phase ends, software and documentation remain available, but no technical support is provided, except for assistance with upgrading to a supported version. Full functionality of OpenShift clusters cannot be guaranteed for unmaintained versions.
Extended Update Support
Red Hat designates all even-numbered minor releases (e.g., 4.8, 4.10, 4.12, 4.14, 4.16) as Extended Update Support (EUS) releases. For EUS releases, the Full and Maintenance support phases apply with the same conditions. EUS releases are designed to simplify upgrades between EUS versions, allowing for streamlined worker node upgrades and strategies that result in fewer node reboots.
Red Hat offers optional EUS add-ons for EUS-denoted releases.
Extended Update Support add-on: Term 1 (EUS Term 1)
This optional, 6-month term follows the maintenance phase for the given release. It provides technical support, backports of critical and important security updates and urgent-priority bug fixes for a predefined set of minor releases. This term allows customers to remain on the same minor release of OpenShift for a total of 24 months, which is beneficial for stable production environments running mission-critical applications.
Term 1 support is included with Premium SLA subscriptions for x86-64 versions of OpenShift Kubernetes Engine, OpenShift Container Platform, and OpenShift Platform Plus. It's also available as an add-on for Standard SLA subscriptions.
Extended Update Support add-on: Term 2 (EUS Term 2)
This is an optional, 12-month, buy-up, add-on subscription that commences after Term 1 ends for EUS releases. It offers technical support, backports of critical and important security updates and urgent-priority bug fixes for platform-aligned Operators included in OpenShift Kubernetes Engine, as well as select OpenShift Container Platform or OpenShift Platform Plus Operators. It includes the same security and bug fix commitments as Term 1.
The combination of Term 1 and Term 2 extends the total support for a minor release to 36 months (3 years), further ensuring stable production environments for critical applications.
For OpenShift Container Platform 4.12, Term 1 and Term 2 were only available on the x86_64 architecture. However, starting with OpenShift Container Platform 4.14, these EUS add-ons include support across all supported architectures.
Customers unsure about their access to EUS add-ons or their suitability for their environment should contact their Red Hat sales representative or partner organization.
When to consider Extended Update Support
Extended Update Support is beneficial in scenarios requiring additional time for planning and execution:
- Complex applications requiring extensive testing before updates
- Regulatory compliance that requires months of validation
- Limited maintenance windows for scheduling updates
- Resource constraints for frequent updates