Add a script to clean up old compute node images on Azure.

[arvados-dev.git] / compute-image-cleaner / usage.go

diff --git a/compute-image-cleaner/usage.go b/compute-image-cleaner/usage.go
new file mode 100644 (file)
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+++ b/compute-image-cleaner/usage.go
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+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+package main
+
+import (
+       "flag"
+       "fmt"
+       "os"
+)
+
+func usage(fs *flag.FlagSet) {
+       fmt.Fprintf(os.Stderr, `
+compute-image-cleaner removes old compute images from the specified storage account/container.
+
+The following environment variables must be set:
+
+  AZURE_TENANT_ID
+  AZURE_SUBSCRIPTION_ID
+  AZURE_CLIENT_ID
+  AZURE_CLIENT_SECRET
+
+For more information about those values and for instructions to create a service principal, see
+https://docs.microsoft.com/en-us/azure/active-directory/develop/howto-create-service-principal-portal
+
+Usage:
+`)
+       fs.PrintDefaults()
+}