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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 f1eca1da6..1ebeacabf 100644
--- a/roles/openshift_prometheus/README.md
+++ b/roles/openshift_prometheus/README.md
@@ -38,11 +38,13 @@ openshift_prometheus_args=['--storage.tsdb.retention=6h', '--storage.tsdb.min-bl
Each prometheus component (prometheus, alertmanager, alertbuffer) can set pv claim by setting corresponding role variable:
```
openshift_prometheus_<COMPONENT>_storage_type: <VALUE> (pvc, emptydir)
+openshift_prometheus_<COMPONENT>_storage_class: <VALUE>
openshift_prometheus_<COMPONENT>_pvc_(name|size|access_modes|pv_selector): <VALUE>
```
e.g
```
openshift_prometheus_storage_type: pvc
+openshift_prometheus_storage_class: glusterfs-storage
openshift_prometheus_alertmanager_pvc_name: alertmanager
openshift_prometheus_alertbuffer_pvc_size: 10G
openshift_prometheus_pvc_access_modes: [ReadWriteOnce]