OpenTSDB rpm uses alternatives to install. (https://rbcommons.com/s/pepperdata/r/5384)
Installed OpenTSDB to /opt/opentsdb/opentsdb-${VERSION} directory. Many tools
rely on the fact that OpenTSDB was installed /usr/share/opentsdb. So, we kept
/usr/share/opentsdb and made it point to the versioned directory via
alternatives.  Slave links are /etc/init.d/opentsdb and /usr/bin/tsdb.  Renamed
any old non-symbolic-link files and directories.