diff --git a/stacks/_templates/vector-aggregator.yaml b/stacks/_templates/vector-aggregator.yaml
index 9b6c3c5f..469ec23f 100644
--- a/stacks/_templates/vector-aggregator.yaml
+++ b/stacks/_templates/vector-aggregator.yaml
@@ -23,7 +23,7 @@ options:
         inputs:
           - vector
         endpoints:
-          - https://opensearch.default.svc.cluster.local:9200
+          - $OPENSEARCH_HOSTS
         mode: bulk
         # The auto-detection of the API version does not work in Vector
         # 0.41.1 for OpenSearch, so the version must be set explicitly
@@ -38,6 +38,9 @@ options:
           strategy: basic
           user: admin
           password: {{ openSearchAdminPassword }}
+  envFrom:
+    - configMapRef:
+        name: opensearch
   extraVolumeMounts:
     # Use the certificate generated by the secret-operator
     - name: tls