GCP - Unable to authenticate myself to invoke Goog

2019-08-09 13:15发布

问题:

I have a cloud function named rad_format_text_v0. I (andy@onehot.io) have permission to invoke it, shown here:

$ gcloud beta functions get-iam-policy rad_format_text_v0
bindings:
- members:
  - allAuthenticatedUsers
  - user:andy@onehot.io
  role: roles/cloudfunctions.invoker
etag: BwWOSfjYxp0=
version: 1

I can invoke it using gcloud functions call...

$ gcloud auth list
           Credentialed Accounts
ACTIVE             ACCOUNT
*                  andy@onehot.io

$ gcloud functions call rad_format_text_v0 --data "$(< test.json)"
executionId: 2wm7nrgc0vjo
result: |
  ["REDACTED successful result"]

However, when I try another HTTP client like curl, it fails even though I'm passing an auth token...

$ curl -i -X POST "https://us-central1-onehot-autocoder.cloudfunctions.net/rad_format_text_v0" -H "Content-Type:application/json" -H "Authorization: bearer $(gcloud auth application-default print-access-token)" --data @test.json
HTTP/1.1 401 Unauthorized
WWW-Authenticate: Bearer error="invalid_token" error_description="The access token could not be verified"
Date: Mon, 22 Jul 2019 19:46:59 GMT
Content-Type: text/html; charset=UTF-8
Server: Google Frontend
Content-Length: 312
Alt-Svc: quic=":443"; ma=2592000; v="46,43,39"

<html><head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<title>401 Unauthorized</title>
</head>
<body text=#000000 bgcolor=#ffffff>
<h1>Error: Unauthorized</h1>
<h2>Your client does not have permission to the requested URL <code>/rad_format_text_v0</code>.</h2>
<h2></h2>
</body></html>

I did exactly as explained in the documentation. I have no idea why my token is not working.

回答1:

You are using the gcloud auth application-default print-access-token to get the token and the documentation you shared specify that you should use the gcloud auth print-identity-token command instead.

I tested it and I found that I was not able to use the print-identity-token for my user account. Instead I had to create a new service account and activate it. Then in the curl command, I specified the service account like in the example below:

curl -i https://[REGION]-[PROJECT_ID].cloudfunctions.net/[FUNCTION_NAME] -H "Authorization: bearer $(gcloud auth print-identity-token [SERVICE_ACCOUNT] )"

Apparently the Google Cloud SDK has an issue with the gcloud auth print-identity-token command on version 254, you could also try to downgrade it with the following command:

gcloud components update --version 249.0.0