diff --git a/docs/services/influxdb.md b/docs/services/influxdb.md
index e5bc245..1349a81 100644
--- a/docs/services/influxdb.md
+++ b/docs/services/influxdb.md
@@ -28,6 +28,12 @@ influxdb_hostname: 'example.org'
 #influxdb_init_password: "SUPERSECRETPASSWORD"
 #influxdb_init_org: "EXAMPLE_ORG"
 #influxdb_init_bucket: "SOMEBUCKET"
+#
+# In order to let external services (like Proxmox or Grafana) access the http API of influxdb,
+# you need to specifically expose the corresponding port:
+#
+# Takes an "<ip>:<port>" (e.g. "127.0.0.1:8086") or "<port>" value (e.g. "8086"), or empty string to not expose.
+#influxdb_container_http_host_bind_port: ""
 
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