Keep your versions up-to-date. The two latest versions are supported. Also always install the latest patches for your version.
Download and install ScyllaDB Server, Drivers and Tools in ScyllaDB Download Center
ScyllaDB Web Installer for Linux
Scylla Unified Installer (relocatable executable)
Air-gapped Server Installation
What is in each RPM
Create a Scylla Cluster - Single Data Center (DC)
Create a Scylla Cluster - Multi Data Center (DC)
Scylla Developer Mode
Scylla Configuration Command Reference
Scylla Housekeeping and how to disable it