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diff --git a/roles/monitoring/checks/files/check-github-storage.py b/roles/monitoring/checks/files/check-github-storage.py
new file mode 100755
--- /dev/null
+++ b/roles/monitoring/checks/files/check-github-storage.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python3
+
+# -------------------------------------------------------------
+# Monitoring :: GitHub :: storage quota
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+# Project: Nasqueron
+# Description: Query storage quota on GitHub API
+# License: BSD-2-Clause
+# -------------------------------------------------------------
+
+
+import hvac
+import requests
+import yaml
+
+
+VAULT_CERTIFICATE = "/usr/local/share/certs/nasqueron-vault-ca.crt"
+
+ORG = "nasqueron"
+STORAGE_THRESHOLD = 8
+
+
+# -------------------------------------------------------------
+# Configuration
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+
+def get_config_path():
+ # As long as we deploy primary servers on FreeBSD,
+ # this path is stable.
+ return "/usr/local/etc/monitoring/vault.conf"
+
+
+def load_config():
+ with open(get_config_path()) as fd:
+ return yaml.safe_load(fd)
+
+
+# -------------------------------------------------------------
+# Fetch credential from Vault
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+
+def connect_to_vault():
+ config = load_config()
+
+ client = hvac.Client(url=config["vault"]["url"], verify=VAULT_CERTIFICATE)
+ client.auth.approle.login(
+ role_id=config["vault"]["auth"]["role_id"],
+ secret_id=config["vault"]["auth"]["secret_id"],
+ )
+
+ return client
+
+
+def read_github_token(vault_client):
+ secret = vault_client.secrets.kv.read_secret_version(
+ mount_point="apps",
+ path="monitoring/github/token",
+ raise_on_deleted_version=True,
+ )
+
+ return secret["data"]["data"]["password"]
+
+
+# -------------------------------------------------------------
+# GitHub :: shared storage billing
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+
+def query_storage(org, token):
+ url = f"https://api.github.com/orgs/{org}/settings/billing/shared-storage"
+ headers = {
+ "Accept": "application/vnd.github+json",
+ "Authorization": f"Bearer {token}",
+ "X-GitHub-Api-Version": "2022-11-28",
+ }
+ response = requests.get(url, headers=headers)
+
+ return response.json()
+
+
+# -------------------------------------------------------------
+# Application entbry point
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+
+def run():
+ vault_client = connect_to_vault()
+ token = read_github_token(vault_client)
+
+ storage = query_storage(ORG, token)
+ used = int(storage["estimated_storage_for_month"])
+
+ print(f"GitHub shared storage used (GB): {used}")
+
+ if used >= STORAGE_THRESHOLD:
+ exit(2)
+
+ exit(0)
+
+
+if __name__ == "__main__":
+ run()
diff --git a/roles/vault/policies/files/monitoring.hcl b/roles/vault/policies/files/monitoring.hcl
new file mode 100644
--- /dev/null
+++ b/roles/vault/policies/files/monitoring.hcl
@@ -0,0 +1,18 @@
+# -------------------------------------------------------------
+# Vault configuration - Policy for monitoring
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+# Project: Nasqueron
+# License: Trivial work, not eligible to copyright
+# Source file: roles/vault/policies/files/monitoring.hcl
+# -------------------------------------------------------------
+#
+# <auto-generated>
+# This file is managed by our rOPS SaltStack repository.
+#
+# Changes to this file may cause incorrect behavior
+# and will be lost if the state is redeployed.
+# </auto-generated>
+
+path "apps/data/monitoring/github/token" {
+ capabilities = [ "read" ]
+}

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