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8.10. Protecting the Overcloud from Removal

To avoid accidental removal of the Overcloud with the heat stack-delete overcloud command, Heat contains a set of policies to restrict certain actions. Edit the /etc/heat/policy.json and find the following parameter: 
"stacks:delete": "rule:deny_stack_user"
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Change it to: 
"stacks:delete": "rule:deny_everybody"
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Save the file.
This prevents removal of the Overcloud with the heat client. To allow removal of the Overcloud, revert the policy to the original value.
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