The user can declare an allowed upper/lower deviation from the target value

[mtneug]

Description

Instead of a single target value users might want to specify a range. This can be done by upper and lower target deviation values. Users can specify these as absolute or percentage values. If no values are provided no deviation is allowed.

Design

Users can specify upper and lower deviations from the target through the de.mtneug.spate.metrics.<key>.target.deviation.upper and de.mtneug.spate.metrics.<key>.target.deviation.lower labels. Both are either unsigned 64-bit integers or percentage values. A percentage is an unsigned integer between 0 and 100 followed by a % sign.

Example

$ docker service create \
   --name service \
   --label de.mtneug.spate.metrics.cpu.type=cpu \
   --label de.mtneug.spate.metrics.cpu.target=0.8 \
   --label de.mtneug.spate.metrics.cpu.target.deviation.lower=10% \
   --label de.mtneug.spate.metrics.cpu.target.deviation.upper=0.1 \
   ...
   my/service