anchor.diff:              periods: 1
               function: diff
       - name: 'neutron-logs-error'
  -      description: 'Some errors have been detected in Neutron logs'
  +      description: 'Too many errors have been detected in Neutron logs'
         severity: 'warning'
         enabled: 'true'
         trigger:
  
positive.code:             periods: 0
              function: avg
      - name: 'cpu-critical-compute'
        description: 'The CPU usage is too high (compute node).'
        severity: 'critical'
        enabled: 'true'
        trigger:
  
negative.code:             periods: 0
              function: min
      - name: 'log-fs-critical'
        description: "The log filesystem's free space is too low"
        severity: 'critical'
        enabled: 'true'
        trigger:
  