A deployment workflow, or deployment graph, is an hierarchy of deployment tasks with dependencies that Fuel executes to deploy an OpenStack environment. A deployment graph enables you to execute complex orchestrated workflows, such as bugfixes application, reference architecture altering, or upgrades in a particular order. For example, you can enable specific network verification tasks for a Fuel plugin or change the default image delivering protocol (HTTP) for OpenStack nodes provisioning, and so on.
Warning
This section describes advanced usage and requires the user to deeply understand Fuel internals. Do not modify deployment workflows if you are deploying an OpenStack environment for the first time.
This section includes the following topics:
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