diff --git a/entrypoint.sh b/entrypoint.sh
index 0d33884..6d3915e 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -107,7 +107,8 @@ start_redis() {
     if [[ "${SETUP_MODE}" == "cluster" ]]; then
         echo "Starting redis service in cluster mode....."
         if [[ "${NODEPORT}" == "true" ]]; then
-            CLUSTER_ANNOUNCE_IP="${!node-ip-$(hostname)}"
+            CLUSTER_ANNOUNCE_IP_VAR = "node_ip_$(hostname | tr '-' '_')"
+            CLUSTER_ANNOUNCE_IP="${!CLUSTER_ANNOUNCE_IP_VAR}"
         else
             CLUSTER_ANNOUNCE_IP="${POD_IP}"
         fi