nvazquez opened a new pull request #3610: KVM: Rolling maintenance
URL: https://github.com/apache/cloudstack/pull/3610
 
 
   ## Description
   Rolling maintenance for KVM. Scope can be:
   - Zone wide
   - Pod wide
   - Cluster wide
   - Host wide
   
   Rolling maintenance is performed in stages. There are 4 stages:
   - PreFlight
   - PreMaintenance
   - Maintenance
   - PostMaintenance
   
   Each stage is executed within a single script
   
   Administrators are responsible for placing bash or python scripts in the 
hooks directory for each stage, with execution permission
   
   ## Types of changes
   - [ ] Breaking change (fix or feature that would cause existing 
functionality to change)
   - [x] New feature (non-breaking change which adds functionality)
   - [ ] Bug fix (non-breaking change which fixes an issue)
   - [ ] Enhancement (improves an existing feature and functionality)
   - [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
   
   ## Screenshots (if appropriate):
   
   ## How Has This Been Tested?

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