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
ScyllaDB Unified Installer (relocatable executable)
Air-gapped Server Installation
What is in each RPM
Create a ScyllaDB Cluster - Single Data Center (DC)
Create a ScyllaDB Cluster - Multi Data Center (DC)
ScyllaDB Developer Mode
ScyllaDB Configuration Command Reference
ScyllaDB Housekeeping and how to disable it