diff --git a/compositions/apex/docker-compose.yml b/compositions/apex/docker-compose.yml
index f7b6bf9..8210e65 100644
--- a/compositions/apex/docker-compose.yml
+++ b/compositions/apex/docker-compose.yml
@@ -188,6 +188,7 @@ services:
   alloy:
     image: grafana/alloy:v1.17.1
     container_name: apex-alloy
+    hostname: "${APEX_NODE_HOST}"   # UTS hostname => node_exporter's node_uname_info `nodename` (else the container id)
     profiles: [alloy]
     user: "0:0"  # root: required for host metrics, journal, and docker.sock
     volumes: