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-rw-r--r--roles/openshift_prometheus/README.md2
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diff --git a/roles/openshift_prometheus/README.md b/roles/openshift_prometheus/README.md
index 5bf6e7d77..9e43da5c3 100644
--- a/roles/openshift_prometheus/README.md
+++ b/roles/openshift_prometheus/README.md
@@ -25,6 +25,8 @@ For default values, see [`defaults/main.yaml`](defaults/main.yaml).
- `openshift_prometheus_args`: Modify or add arguments for prometheus application
+- `openshift_prometheus_<COMPONENT>_hostname`: specify the hostname for the route of that compontent: defaults to `<COMPONENT>-{{openshift_prometheus_namespace}}.{{openshift_master_default_subdomain}}`
+
e.g
```
openshift_prometheus_args=['--storage.tsdb.retention=6h', '--storage.tsdb.min-block-duration=5s', '--storage.tsdb.max-block-duration=6m']