You should use ignore_errors in an Ansible playbook when:
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Non-Critical Tasks: The task is not critical to the overall success of the playbook, and you want to allow subsequent tasks to run regardless of its outcome.
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Error Handling: You plan to handle errors in a specific way later in the playbook, such as logging the error or taking alternative actions based on the failure.
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Optional Operations: The task is optional, and its failure should not prevent the execution of other tasks that are essential.
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Testing and Debugging: You are testing or debugging a playbook and want to see how other tasks behave even if one fails.
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Graceful Degradation: You want the playbook to continue running even if certain commands fail, allowing for a more resilient automation process.
Use ignore_errors judiciously, as it can mask issues that may need attention if overused.
