Recently, I made the mistake of rhetorically asking if I needed to spell out why unikernels are unfit for production. The response was overwhelming: whether people feel that unikernels are wrong-headed and are looking for supporting detail or are unikernel proponents and want to know what the counter-arguments could possibly be, there is clearly a desire to hear the arguments against running unikernels in production.
At InterModal Data we build large systems with many components running in highly available configurations 24x7x365. For such systems, understanding how the components are working is very important. Our analytics system measures and records thousands of metrics from all components and makes these measurements readily available for performance analysis, capacity planning, and trouble shooting.