Supported Platforms

The OSG Software Release Series are supported on Red Hat Enterprise Linux (RHEL) compatible platforms for 64-bit Intel architectures according to the following table:

Platform	OSG 23	OSG 24
Alma Linux 9	✅	✅
CentOS Stream 9	✅	✅
Red Hat Enterprise Linux 9	✅	✅
Rocky Linux 9	✅	✅
Alma Linux 8	✅	✅
CentOS Stream 8	✅	✅
Red Hat Enterprise Linux 8	✅	✅
Rocky Linux 8	✅	✅

Starting in OSG 24, the above platforms are also supported on 64-bit ARM architecture:

Architecture	OSG 23	OSG 24
64-bit Intel (amd64)	✅	✅
64-bit ARM (aarch64)		✅

OSG builds and tests its RPMs on the latest releases of the relevant platforms (e.g., in 2024, the RHEL 9 builds were based on RHEL 9.4). Older platform release versions may not receive thorough testing and may have subtle bugs. If you run into problems with an older OS version, you will be asked them to update to the latest operating system packages as part of the support process.

In particular, versions of RHEL/CentOS/SL 7 less than 7.5 have known issues with several pieces of software, including osg-oasis and xrootd-lcmaps. In addition, versions of RHEL/CentOS/SL 7 less than 7.8 do not have Python 3, which is required to run HTCondor 9 and HTCondor-CE 5.

Future Release Series Plans

The OSG Software Team expects to support the following Enterprise Linux (EL) major operating system versions for future OSG Software Release Series:

Release Series	Expected Release	EL8	EL9
OSG 25	Q3 2025	✅	✅
OSG 26	Q3 2026	✅	✅