anchor.diff:              fields:
                 fs: '/opt/es/data' # Real FS is /opt/es-data but Collectd substituted '/' by '-'
               relational_operator: '<'
  -            threshold: 15
  +            threshold: 15 # The high watermark for disk usage is 90% by default
               window: 60
               periods: 0
               function: min
  
positive.code:             fields:
                fs: '/opt/es/data' # Real FS is /opt/es-data but Collectd substituted '/' by '-'
              relational_operator: '<'
              threshold: 20
              window: 60
              periods: 0
              function: min
  
negative.code:             fields:
                fs: '/'
              relational_operator: '<'
              threshold: 5
              window: 60
              periods: 0
              function: min
  