On instances differenet then i2/m3/c3 we provide instructions to run scylla_ip_setup. Running scylla_io_setup requires access to /var/lib/scylla to crate a temporary file. To gain access to that directory the user should run 'sudo scylla_io_setup'. refs: #1645 Signed-off-by: Shlomi Livne <shlomi@scylladb.com> Message-Id: <4ce90ca1ba4da8f07cf8aa15e755675463a22933.1473935778.git.shlomi@scylladb.com>