diff --git a/action.yml b/action.yml
index 0a825c5..32c90d0 100644
--- a/action.yml
+++ b/action.yml
@@ -41,6 +41,11 @@ inputs:
                             "universe_domain": "googleapis.com"
                         },
                         "GCP_REGION": "us-east1"
+                    },
+                    "onprem": {
+                        "ONPREM_SSH_INIT_SERVER_HOST": "<ssh_init_server_[host|ip]>",
+                        "ONPREM_SSH_PRIVATE_KEY": "<ssh_private_key>",
+                        "ONPREM_SSH_USER": "<ssh_user>"
                     }
                 }
             },
@@ -73,6 +78,11 @@ inputs:
                             "universe_domain": "googleapis.com"
                         },
                         "GCP_REGION": "us-east1"
+                    },
+                    "onprem": {
+                        "ONPREM_SSH_INIT_SERVER_HOST": "<ssh_init_server_[host|ip]>",
+                        "ONPREM_SSH_PRIVATE_KEY": "<ssh_private_key>",
+                        "ONPREM_SSH_USER": "<ssh_user>"
                     }
                 }
             },
@@ -105,6 +115,11 @@ inputs:
                             "universe_domain": "googleapis.com"
                         },
                         "GCP_REGION": "us-east1"
+                    },
+                    "onprem": {
+                        "ONPREM_SSH_INIT_SERVER_HOST": "<ssh_init_server_[host|ip]>",
+                        "ONPREM_SSH_PRIVATE_KEY": "<ssh_private_key>",
+                        "ONPREM_SSH_USER": "<ssh_user>"
                     }
                 }
             }
@@ -122,7 +137,7 @@ inputs:
     description: GitHub token with full access permissions to repositories (used by installer script and RMK).
     required: true
   rmk_cluster_provider:
-    description: Cluster provider. Allowed values are "aws", "azure", "gcp".
+    description: Cluster provider. Allowed values are "aws", "azure", "gcp", "onprem".
     required: true
     default: aws
   rmk_command:
@@ -207,10 +222,14 @@ outputs:
 runs:
   using: composite
   steps:
+    # setup-python action does not support provisioning Python on RHEL 9 self-hosted runners.
+    # Python is pre-installed on onprem hosts via configuration management.
+    # Therefore, this step may legitimately fail and should not block the workflow.
     - name: Install python
       uses: actions/setup-python@v4
       with:
         python-version: "3.10"
+      continue-on-error: true
 
     - name: Install python dependencies
       run: pip install -r ${{ github.action_path }}/requirements.txt