To learn more about Prometheus's query language, including how to do compute percentiles from histograms, how to deal with timestamp-based metrics, or how to query for service instance health, head on to How To Query Prometheus on Ubuntu 14.04 Part 2.
Fungus gnats are not at all harmful to people or pets. However, when you begin to find them swarming plants in the house or greenhouse, it's time to get rid of the fungus gnats. First things first, make sure fungus gnats are the real culprit; they are often confused with fruit flies. Fungus gnats look like small mosquitoes just 1/16 inch to 1/8 inch long.
For most people, toenail fungus is not at all dangerous, causing only emotional distress and damage. From a medical standpoint, fungi live all over the skin of healthy people, causing no harm. The fungus on the skin is mainly in the form of yeast and small filaments. I have yet to see a mushroom growing on someone.