Valid authentication was not provided

Question

I am stuck on step 2.4 of this wiki

In the previous step, I get a valid token.

Why do I get "Valid authentication was not provided"?

I added a header called Authorization - see picture.

What am i missing?

Answer 1

When we use Azure Log Analytics REST API to do a query, we need to use Authorization=Bearer eyJ.... as request Headers. For more details, please refer to here.

For example

1. Register Azure AD application

2. Configure API permissions for the AD application

3. Give the AAD Application access to our Log Analytics Workspace. Please assign Log Analytics Reader role to the AD application

4. Get access token

POST /<your tenant id>/oauth2/token HTTP/1.1
Host: login.microsoftonline.com
Content-Type: application/x-www-form-urlencoded

grant_type =client_credentials
&client_id=<>
&client_secret=<>
&resource=https://westus2.api.loganalytics.io

4. Call the api

POST https://api.loganalytics.io/v1/workspaces/{workspaceId}/query
Authorization: Bearer ey...
Content-Type: application/json

{
    "query": ""
}