diff --git a/install.sh b/install.sh
index 4d0ef0e..28ae04f 100755
--- a/install.sh
+++ b/install.sh
@@ -21,7 +21,7 @@
 set -o nounset
 set -o pipefail
 
-INSTALLER_ROOT_DIR="$(dirname $(realpath ${BASH_SOURCE[0]}))"
+INSTALLER_ROOT_DIR="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
 export ANSIBLE_ROLES_PATH="$HOME/.ansible/roles:/usr/share/ansible/roles:/etc/ansible/roles:${ENGINE_PATH}/engine/playbooks/roles:${ENGINE_CACHE}/repos/bifrost/playbooks/roles"
 export ANSIBLE_LIBRARY="$HOME/.ansible/plugins/modules:/usr/share/ansible/plugins/modules:${ENGINE_CACHE}/repos/bifrost/playbooks/library"
 
@@ -29,88 +29,90 @@
 echo "-------------------------------------------------------------------------"
 echo "Info: Configure target hosts"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_PATH}
-ansible-playbook ${ENGINE_ANSIBLE_PARAMS} \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  ${INSTALLER_ROOT_DIR}/playbooks/configure-targethosts.yml
+cd "${ENGINE_PATH}"
+ansible-playbook "${ENGINE_ANSIBLE_PARAMS}" \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  "${INSTALLER_ROOT_DIR}/playbooks/configure-targethosts.yml"
 
 # configure kolla installer
 echo "-------------------------------------------------------------------------"
 echo "Info: Configure kolla installer"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_PATH}
-ansible-playbook ${ENGINE_ANSIBLE_PARAMS} \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  ${INSTALLER_ROOT_DIR}/playbooks/configure-installer.yml
+cd "${ENGINE_PATH}"
+ansible-playbook "${ENGINE_ANSIBLE_PARAMS}" \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  "${INSTALLER_ROOT_DIR}/playbooks/configure-installer.yml"
 
 # TODO: we need to run scenario pre-deployment tasks here in order to configure
 # bootstrap scenario
 echo "-------------------------------------------------------------------------"
 echo "Info: Execute scenario pre deployment tasks"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_PATH}
-ansible-playbook ${ENGINE_ANSIBLE_PARAMS} \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  ${INSTALLER_ROOT_DIR}/playbooks/pre-deployment.yml
+cd "${ENGINE_PATH}"
+ansible-playbook "${ENGINE_ANSIBLE_PARAMS}" \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  "${INSTALLER_ROOT_DIR}/playbooks/pre-deployment.yml"
 
 # kolla-ansible: bootstrap servers
 echo "-------------------------------------------------------------------------"
 echo "Info: Kolla-ansible bootstrap servers"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_CACHE}/repos/kolla-ansible/tools
+cd "${ENGINE_CACHE}/repos/kolla-ansible/tools"
 ./kolla-ansible \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  --configdir ${ENGINE_CACHE}/config \
-  --passwords ${ENGINE_CACHE}/config/passwords.yml \
-  -e @${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  --configdir "${ENGINE_CACHE}/config" \
+  --passwords "${ENGINE_CACHE}/config/passwords.yml" \
+  -e "@${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml" \
   bootstrap-servers
 
 # kolla-ansible: prechecks
 echo "-------------------------------------------------------------------------"
 echo "Info: Kolla-ansible prechecks"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_CACHE}/repos/kolla-ansible/tools
+cd "${ENGINE_CACHE}/repos/kolla-ansible/tools"
 ./kolla-ansible \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  --configdir ${ENGINE_CACHE}/config \
-  --passwords ${ENGINE_CACHE}/config/passwords.yml \
-  -e @${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  --configdir "${ENGINE_CACHE}/config" \
+  --passwords "${ENGINE_CACHE}/config/passwords.yml" \
+  -e "@${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml" \
   prechecks
 
 # kolla-ansible: deploy
 echo "-------------------------------------------------------------------------"
 echo "Info: Kolla-ansible deploy"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_CACHE}/repos/kolla-ansible/tools
+cd "${ENGINE_CACHE}/repos/kolla-ansible/tools"
 ./kolla-ansible \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  --configdir ${ENGINE_CACHE}/config \
-  --passwords ${ENGINE_CACHE}/config/passwords.yml \
-  -e @${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  --configdir "${ENGINE_CACHE}/config" \
+  --passwords "${ENGINE_CACHE}/config/passwords.yml" \
+  -e "@${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml" \
   deploy
 
 # kolla-ansible: post-deploy
 echo "-------------------------------------------------------------------------"
 echo "Info: Kolla-ansible post-deploy"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_CACHE}/repos/kolla-ansible/tools
+cd "${ENGINE_CACHE}/repos/kolla-ansible/tools"
 ./kolla-ansible \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  --configdir ${ENGINE_CACHE}/config \
-  --passwords ${ENGINE_CACHE}/config/passwords.yml \
-  -e @${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  --configdir "${ENGINE_CACHE}/config" \
+  --passwords "${ENGINE_CACHE}/config/passwords.yml" \
+  -e "@${ENGINE_CACHE}/config/kolla-ansible-extra-vars.yml" \
   post-deploy
 
+# NOTE: shellcheck SC1090 is disabled since openrc file is put in place during runtime
+# shellcheck disable=SC1090
 # source admin-openrc.sh for running post-deployment tasks
-source ${ENGINE_CACHE}/config/admin-openrc.sh
+source "${ENGINE_CACHE}/config/admin-openrc.sh"
 
 # run post-deployment tasks
 echo "-------------------------------------------------------------------------"
 echo "Info: Execute scenario and common post deployment tasks"
 echo "-------------------------------------------------------------------------"
-cd ${ENGINE_PATH}
-ansible-playbook ${ENGINE_ANSIBLE_PARAMS} \
-  -i ${ENGINE_CACHE}/config/inventory.ini \
-  ${INSTALLER_ROOT_DIR}/playbooks/post-deployment.yml
+cd "${ENGINE_PATH}"
+ansible-playbook "${ENGINE_ANSIBLE_PARAMS}" \
+  -i "${ENGINE_CACHE}/config/inventory.ini" \
+  "${INSTALLER_ROOT_DIR}/playbooks/post-deployment.yml"
 
 # vim: set ts=2 sw=2 expandtab: