We used to use /opt/scylladb just for Scylla build toolchain and dependency libraries, not for Scylla main package. But since we merged relocatable package, Scylla main binary and dependency libraries are all located under /opt/scylladb, only setup scripts remained on /usr/lib/scylla. It strange to keep using both /usr/lib/<app name> and /opt/<app name>, we should merge them into single place. Message-Id: <20190614011038.17827-1-syuu@scylladb.com>
Edit variables.json and run dist/ami/build_ami.sh, it will build & upload AMI.
When deploying the AMI, be sure to add two more disks(sdb, sdc) to construct RAID.