The Uninstall Workflow

Workflow name: ``uninstall``

Workflow description: Workflow for uninstalling applications.

Workflow parameters:

  • ignore_failure: If true, then operation errors encountered during uninstallation will not prevent the workflow from moving on; errors will be logged and printed. If false, errors encountered during uninstallation will prompt the orchestrator to behave similarly to install (that is: retrying recoverable errors, aboring on non-recoverable errors).

Workflow high-level pseudo-code:

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

  1. Wait for dependent node instances to be deleted. (Only start processing this node instance when the node instances dependent on it are deleted).
  2. Execute cloudify.interfaces.monitoring.stop operation. [1]
  3. If node instance is host node (its type is a subtype of cloudify.nodes.Compute):
    • Execute cloudify.interfaces.monitoring_agent interface stop and uninstall operations. [1]
    • Stop and uninstall agent workers.
  4. Execute cloudify.interfaces.lifecycle.stop operation. [1]
  5. Execute cloudify.interfaces.relationship_lifecycle.unlink relationship operations. [2]
  6. Execute cloudify.interfaces.lifecycle.delete operation. [1]
[1](1, 2, 3, 4) Execute the task mapped to the node’s lifecycle operation (does nothing, if no task is defined).
[2]Execute all tasks mapped to this node’s relationship lifecycle operation (operations execute in the order defined by the node template relationships).
Previous Next