Why do I receive an message stating 'An error occurred starting the Cloud Formation stack' when attempting to start a cluster within the MathWorks cloud center?

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I receive an error when attempting to start a cluster stating "Cluster Startup Failed: An error occurred starting the Cloud Formation stack". How do I view the error in the cloud formation stack?

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 28 Aug 2014
The MathWorks Cloud Center leverages Amazon's Cloud Formation service to manage cluster resources. If you get an unexpected exit from a cluster start, the best place to start is to review the events for the Cloud Formation stack.
  1. Login into the AWS Console
  2. Open the Cloud Formation console view (In the upper left, under Services, select CloudFormation.)
  3. If the cluster has shut down, change the filter to "Deleted".
  4. Select a stack to inspect. They're listed in descending order by "Deleted Time", so the problematic one is probably near the top, and _may_ have a "Status Reason" of "User Initiated".
  5. In the lower half of the console screen, select the Events tab. You might have to expand the lower half of the screen using the icons on the bottom right hand side of the page. 
  6. Scroll through the events list and look for the earliest status in red. The status type will indicate something "_FAILED", and will be followed by "ROLLBACK" events. The "Status Reason" column text will indicate root cause. 

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R2014a

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