diff --git a/scripts/bootstrap-aio.sh b/scripts/bootstrap-aio.sh
index ebee530b3b..88f2c1258c 100755
--- a/scripts/bootstrap-aio.sh
+++ b/scripts/bootstrap-aio.sh
@@ -76,7 +76,7 @@ if [ ! "$(grep -e '^nameserver 8.8.8.8' -e '^nameserver 8.8.4.4' /etc/resolv.con
 fi
 
 # Ensure that the https apt transport is available before doing anything else
-apt-get update && apt-get install -y apt-transport-https
+apt-get update && apt-get install -y apt-transport-https < /dev/null
 
 # Set the host repositories to only use the same ones, always, for the sake of consistency.
 cat > /etc/apt/sources.list <<EOF
@@ -94,7 +94,7 @@ EOF
 apt-get update
 
 # Remove known conflicting packages in the base image
-apt-get purge -y libmysqlclient18 mysql-common
+apt-get purge -y libmysqlclient18 mysql-common < /dev/null
 
 # Install required packages
 apt-get install -y bridge-utils \
@@ -110,7 +110,7 @@ apt-get install -y bridge-utils \
                    tmux \
                    vim \
                    vlan \
-                   xfsprogs
+                   xfsprogs < /dev/null
 
 # Flush all the iptables rules set by openstack-infra
 if [ "${FLUSH_IPTABLES}" == "yes" ]; then
@@ -295,7 +295,7 @@ done
 
 if [ ${DEPLOY_CEILOMETER} == "yes" ]; then
   # Install mongodb on the aio1 host
-  apt-get install mongodb-server mongodb-clients python-pymongo -y
+  apt-get install mongodb-server mongodb-clients python-pymongo -y < /dev/null
   # Change bind_ip to management ip
   sed -i "s/^bind_ip.*/bind_ip = $MONGO_HOST/" /etc/mongodb.conf
   # Asserting smallfiles key
diff --git a/scripts/bootstrap-ansible.sh b/scripts/bootstrap-ansible.sh
index 9507be074f..258b2a1446 100755
--- a/scripts/bootstrap-ansible.sh
+++ b/scripts/bootstrap-ansible.sh
@@ -44,7 +44,7 @@ ssh_key_create
 APT=`command -v apt-get` || true
 YUM=`command -v yum` || true
 if [[ "$APT" != "" ]]; then
-    apt-get update && apt-get -y install git python-all python-dev curl autoconf g++ python2.7-dev
+    apt-get update && apt-get -y install git python-all python-dev curl autoconf g++ python2.7-dev < /dev/null
 elif [[ "$YUM" != "" ]]; then
     yum check-update && yum -y install git python2 curl autoconf gcc-c++ python2-devel
 fi
diff --git a/scripts/run-aio-build.sh b/scripts/run-aio-build.sh
index 7a052fb258..f64de270bd 100755
--- a/scripts/run-aio-build.sh
+++ b/scripts/run-aio-build.sh
@@ -29,7 +29,10 @@ export WORKING_FOLDER=${WORKING_FOLDER:-"/opt/openstack-ansible"}
 set -x
 
 # install git so that we can fetch the repo
-apt-get update && apt-get install -y git
+# note: the redirect of stdin to /dev/null is necessary for when this script is
+# run as part of a curl-pipe-shell. otherwise apt-get will consume the rest of
+# this file as if it was its own stdin (despite using -y to skip interaction).
+apt-get update && apt-get install -y git < /dev/null
 
 # fetch the repo
 git clone -b ${REPO_BRANCH} ${REPO_URL} ${WORKING_FOLDER}