When upgrading, the trusty-backports repository is required
to install Object Storage. To enable the repository, 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.