The OSG release series are supported on Red Hat Enterprise Linux (RHEL) compatible platforms for 64-bit Intel architectures according to the following table:
|Platform||OSG 3.6||OSG 23|
|CentOS Stream 8||✅||✅|
|CentOS Stream 9||✅||✅|
|Alma Linux 8||✅||✅|
|Alma Linux 9||✅||✅|
|Red Hat Enterprise Linux 7||✅|
|Red Hat Enterprise Linux 8||✅||✅|
|Red Hat Enterprise Linux 9||✅||✅|
|Rocky Linux 8||✅||✅|
|Rocky Linux 9||✅||✅|
|Scientifix Linux 7||✅|
OSG builds and tests its RPMs on the latest releases of the relevant platforms (e.g., in 2023, the RHEL 9 builds were based on RHEL 9.2).
Older platform release versions may not receive thorough testing and may have subtle bugs.
In particular, versions of RHEL/CentOS/SL 7 less than 7.5 have known issues with several pieces of software, including
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.
If sites run into problems with one of those versions, we will ask them to update to the latest operating system packages as part of the support process.