diff --git a/elements/rdo-release/README.md b/elements/rdo-release/README.md
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+++ b/elements/rdo-release/README.md
@@ -0,0 +1,5 @@
+Enables the RDO yum repository for a released version of OpenStack on Red Hat
+based operating systems. $RDO_RELEASE is set by default to the latest openstack
+release. It can be overriden to select the version of RDO to install.
+Set the environment variable to 'juno' to set the default version to
+install to 'juno'.
diff --git a/elements/rdo-release/environment.d/10-rdo-release-name.bash b/elements/rdo-release/environment.d/10-rdo-release-name.bash
new file mode 100644
index 000000000..ce07fba0f
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+++ b/elements/rdo-release/environment.d/10-rdo-release-name.bash
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+export RDO_RELEASE=${RDO_RELEASE:-kilo}
diff --git a/elements/rdo-release/pre-install.d/10-rdo-release-repo b/elements/rdo-release/pre-install.d/10-rdo-release-repo
new file mode 100755
index 000000000..8defa81e8
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+++ b/elements/rdo-release/pre-install.d/10-rdo-release-repo
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+#!/bin/bash
+
+set -eux
+
+rpm -q rdo-release || install-packages http://rdo.fedorapeople.org/openstack-$RDO_RELEASE/rdo-release-$RDO_RELEASE.rpm