anchor.diff:              periods: 0
               function: avg
       - name: 'cpu-warning-storage'
  -      description: 'CPU warning on storage'
  +      description: 'The CPU usage is high (storage node).'
         severity: 'warning'
         trigger:
           logical_operator: 'or'
  
positive.code:             periods: 0
              function: min
      - name: 'fs-warning'
        description: 'Filesystem free space is low'
        severity: 'warning'
        trigger:
          rules:
  
negative.code:             periods: 0
              function: avg
      - name: 'cpu-warning-compute'
        description: 'The CPU usage is high (compute node).'
        severity: 'warning'
        trigger:
          logical_operator: 'or'
  