The trusty-backports repository is required to install Object Storage. To
enable it, add the repository's details in
/etc/apt/sources.list and then
update the package list, as follows:
# ansible hosts -m shell -a "sed -r -i 's/^# (deb.*trusty-backports.*)$/1/' /etc/apt/sources.list; apt-get update"
For additional prerequisites, see system requirements.