Shibboleth can be built on most versions of 32- and 64-bit Linux, but is officially supported only on the following distributions at this time, using the RPM packages available from the project's official mirrors:
Red Hat Enterprise 7/8/9
CentOS 7
Rocky Linux 8/9
CentOS 7/8
Amazon Linux 2
Amazon Linux 2023
Packages for CentOS 8 are still being produced but the platform is no longer supported officially due to it having transitioned to an unstable floating package set, and the packages may stop working at any time.
See the SystemRequirements page for more detail on this.
...
SP Upgrades
Upgrading to new SP releases is handled automatically when RPMs are used, or in the case of a source build when "make install" is run using the same installation prefix. The system prevents configuration files from being overwritten and skips "initial install" tasks like generating keys. In the case of RPM upgrades, services should be appropriately restarted, but with source builds that step has to be done manually.
...