diff --git a/setup.sh b/setup.sh
index ee59d97..9c471c7 100755
--- a/setup.sh
+++ b/setup.sh
@@ -208,6 +208,14 @@ if [[ -n "$create_server" && ! -f "$server_config" ]]; then
 	ls -lh "$server_config"
 fi
 
+echo "Verifying this is the only run..."
+ps -ef | grep ansible-playbook | grep -v grep
+ansible_exists="$?"
+if [[ "$ansible_exists" == 0 ]]; then
+	echo "Playbook is already being executed. Exiting."
+   exit 0
+fi
+
 echo "Provisioning Ansible..."
 if [[ $local == "Y" ]]; then
 	sudo ansible-playbook $LOCAL