The Install Workflow

Workflow name: ``install``

Workflow description: Workflow for installing applications.

Workflow high-level pseudo-code:

For each node, for each node instance (in parallel):

  1. Wait for node instance relationships to be started. (Only start processing this node instance when the node instances it depends on are started).
  2. Execute cloudify.interfaces.lifecycle.create operation. [1]
  3. Execute cloudify.interfaces.relationship_lifecycle.preconfigure relationship operations. [2]
  4. Execute cloudify.interfaces.lifecycle.configure operation. [1]
  5. Execute cloudify.interfaces.relationship_lifecycle.postconfigure relationship operations. [2]
  6. Execute cloudify.interfaces.lifecycle.start operation. [1]
  7. If the node instance is a host node (its type is a subtype of cloudify.nodes.Compute):
    • Install agent workers and required plugins on this host.
    • Execute cloudify.interfaces.monitoring_agent interface install and start operations. [1]
  8. Execute cloudify.interfaces.monitoring.start operation. [1]
  9. Execute cloudify.interfaces.relationship_lifecycle.establish relationship operations. [2]
[1](1, 2, 3, 4, 5) Execute the task mapped to the node’s lifecycle operation. (do nothing if no task is defined).
[2](1, 2, 3) Execute all tasks mapped to this node’s relationship lifecycle operation. (Operations are executed in the order defined by the node template relationships)
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