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Chapter 1. Overview of Red Hat Enterprise Linux 10.2

Review major changes to core components and supported in-place upgrade paths in Red Hat Enterprise Linux 10.2.

1.1. Major changes in RHEL 10.2
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1.1.1. Security
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Review the most notable changes to security in Red Hat Enterprise Linux 10.2.

The keylime-agent package is rebased to upstream version 0.2.9, which includes a new agent-driven push attestation model, expanded hardware cryptography, flexible TPM RSA support, and the use of ECC-signed TLS certificates.

The clevis-pin-trustee package provides a new Clevis pin trustee that enables automated encryption and decryption of LUKS-encrypted volumes by using remote attestation through the Trustee Key Broker Service (KBS).

The fapolicyd packages are rebased to upstream version 1.4.3, and you can now filter rules.

RHEL 10.2 introduces the capnproto package, which provides a high-performance data interchange and remote procedure call (RPC) system that uses zero-copy serialization to eliminate the overhead of traditional data encoding and decoding.

This release of the openssh packages introduces support for the ML-KEM (Module-Lattice-Based Key-Encapsulation Mechanism) post-quantum (PQ) key exchange combined with elliptic curves standardized by the National Institute of Standards and Technology (NIST) in FIPS mode.

Also, the libssh library introduces support for post-quantum traditional (PQ/T) hybrid key exchange methods based on the quantum-resistant ML-KEM standard and traditional Elliptic-curve Diffie-Hellman (ECDH) key exchange schemes.

The p11-kit packages have been upgraded to upstream version 0.26.1, which delivers support for post-quantum cryptography (PQC) definitions in PKCS #11 headers.

The podman-sequoia library supports composite post-quantum signatures.

See New features and enhancements - Security for more information.

1.1.2. Infrastructure services
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Review the most notable changes to infrastructure services in Red Hat Enterprise Linux 10.2.

  • PostgreSQL 18 packages are available.
  • MariaDB 11.8 packages are available.
  • PHP is available in version 8.4.
  • The chrony packages are updated to version 4.8.
  • The frr packages are updated to version 10.4.1.

For more information, see New features and enhancements - Infrastructure services.

1.1.3. Kernel
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Review the most notable kernel updates in Red Hat Enterprise Linux 10.2.

  • Support for Kernel Livepatches is now available in RHEL 10.
  • Extends kernel observability with additional perf features and new Intel core, uncore, c-state, and package performance events.
  • Aligns perf and BPF tooling more closely with upstream by updating perf to recent upstream versions and enabling debuginfod support.
  • Expands uncore and core performance counters for newer Intel platforms and adds AMD IBS load-latency filtering to improve CPU and memory analysis.
  • Adds or updates drivers and device IDs for Intel EDAC, Intel QAT, and Intel/AMD accelerator and crypto devices to improve hardware coverage.
  • Improves real-time analysis and tuning by extending rtla threshold-overflow actions, adding cpupower Python bindings, and updating rteval.
  • Updates kernel debugging and crash analysis by rebasing crash and enhancing LUKS-aware kdump handling in both the kernel and kdump utilities.

1.1.4. Dynamic programming languages, web and database servers
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Review the most notable changes to dynamic programming languages, web and database servers in Red Hat Enterprise Linux 10.2.

Later versions of the following Application Streams are now available:

  • Node.js 24

Later versions of the following web servers are now available:

  • Apache HTTP Server 2.4.63

Later versions of the following database servers are now available:

  • MariaDB 11.8

See New features and enhancements - Dynamic programming languages, web and database servers for more information.

1.1.5. Compilers and development tools
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Review the most notable changes to compilers and development tools in Red Hat Enterprise Linux 10.2.

System toolchain

The following system toolchain components are available with RHEL 10.2:

  • GCC 14.3
  • glibc 2.39
  • Annobin 13.02
  • Binutils 2.41
Performance tools and debuggers

The following performance tools and debuggers are available with RHEL 10.2:

  • GDB 16.3
  • Valgrind 3.26.0
  • SystemTap 5.4
  • Dyninst 13.0.0
  • elfutils 0.194
  • libabigail 2.9
Performance monitoring tools

The following performance monitoring tools are available with RHEL 10.2:

  • PCP 6.3.7
  • Grafana 10.2.6
Compiler toolsets

The following compiler toolsets are available with RHEL 10.2:

  • GCC Toolset 15

    • GCC 15.2

    • Binutils 2.44

      Note that Annobin and dwz are not provided in GCC Toolset starting with version 15.

  • LLVM Toolset 21.1.8
  • Rust Toolset 1.92.0
  • Go Toolset 1.26.2

1.1.6. Desktop
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Review the most notable changes to desktop in Red Hat Enterprise Linux 10.2.

Flatpaks are the default delivery method for Mozilla Firefox and Thunderbird. The default delivery method for Mozilla Firefox and Thunderbird is changed from RPM packages to Flatpaks. Anaconda, the RHEL installer, preinstalls these Flatpaks by default.

See New features and enhancements - Desktop for more information.

1.2. In-place upgrade
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Review the most notable changes to in-place upgrades in Red Hat Enterprise Linux 10.2.

1.2.1. In-place upgrade from RHEL 9 to RHEL 10
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The supported in-place upgrade paths currently are:

  • From RHEL 9.6 to RHEL 10.0 and 9.8 to 10.2 on the following architectures:

    • AMD and Intel 64-bit architectures (x86-64-v3)
    • The 64-bit ARM architecture (ARMv8.0-A)
    • IBM Power Systems, Little Endian (POWER10) and later
    • 64-bit IBM Z (IBM z15 or IBM LinuxONE III or later)

For instructions on performing an in-place upgrade, see Upgrading from RHEL 9 to RHEL 10.

For information regarding how Red Hat supports the in-place upgrade process, see the In-place upgrade Support Policy.

Notable enhancements and bug fixes include:

  • New Ansible system roles to automate the upgrade process. For more information, see In-place upgrade phases automation with the analysis, remediate, and upgrade Ansible roles.
  • Modernization of the system storage initialization when booting to the upgrade environment.
  • Correctly upgrade systems with configured LVM and deliver initial improvements for multipath.
  • Fix the upgrade on systems with Non-Volatile Memory Express over Fibre Channel (NVMe-FC).
  • Preserve Network Interface Card (NIC) names during the upgrade by using the net.naming-scheme argument in the kernel command line.
  • Migrate kerberos configuration during the upgrade.

1.2.2. In-place upgrade from RHEL 8 to RHEL 10
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It is not possible to perform an in-place upgrade directly from RHEL 8 to RHEL 10. However, you can perform an in-place upgrade from RHEL 8 to RHEL 9 and then perform a second in-place upgrade to RHEL 10. For more information, see In-place upgrades over multiple RHEL major versions by using Leapp.

1.3. Red Hat Customer Portal Labs
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Review the most popular Red Hat Customer Portal Labs in Red Hat Enterprise Linux 10.2.

Red Hat Customer Portal Labs is a set of tools in a section of the Customer Portal available at https://access.redhat.com/labs/. The applications in Red Hat Customer Portal Labs can help you improve performance, quickly troubleshoot issues, identify security problems, and quickly deploy and configure complex applications. Some of the most popular applications are:

1.4. Additional resources
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Review additional resources to effectively plan and manage your Red Hat Enterprise Linux 10 deployments. The following list includes content about system capabilities, life cycles, application compatibility, upgrade paths, troubleshooting, and other important information.

Capabilities and limits of Red Hat Enterprise Linux 10 as compared to other versions of the system are available in the Knowledgebase article Red Hat Enterprise Linux technology capabilities and limits.

Information regarding the Red Hat Enterprise Linux life cycle is provided in the Red Hat Enterprise Linux Life Cycle document.

The Package manifest document provides a package listing for RHEL 10, including licenses and application compatibility levels.

Application compatibility levels are explained in the Red Hat Enterprise Linux 10: Application Compatibility Guide document.

Major differences between RHEL 9 and RHEL 10, including removed functionality, are documented in Considerations in adopting RHEL 10.

Instructions on how to perform an in-place upgrade from RHEL 9 to RHEL 10 are provided in Upgrading from RHEL 9 to RHEL 10.

Using Red Hat Lightspeed you can proactively identify, examine, and resolve known technical issues. Red Hat Lightspeed is included with all RHEL subscriptions. For instructions on how to install the client and register your system to the service, see the Red Hat Lightspeed documentation page.

Note

Public release notes include links to access the original tracking tickets, but private release notes are not viewable so do not include links.[1]


[1] Public release notes include links to access the original tracking tickets, but private release notes are not viewable so do not include links.
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