Behind the scenes - how it all works
We have seen the entire process of requesting a service using both the GUI and the CLI, so as a recap let's take a look at how the process works behind the scenes. If we had to write our own toolsets using the RESTful API, these are the steps that we would take. The following ones show the major calls that are made in the process.
Knowing this, we should also be able to troubleshoot where a problem is, by isolating the step at which the machine fails to build and by looking at the appropriate log file:
- Authenticate and generate a token: As the first step, a call is made to the Keystone service, the credentials are presented, the tenant and the user are authenticated and a token is retrieved. This token is used ...
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