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.
How to Kill Fungus Gnats. Fungus gnats are about one-eighth of an inch long and are dark grey or black with thin wings, long legs and long antennae. Although they have a very short life span, they wreak havoc by feeding on algae, fungi and decaying plant matter, as well as plant roots and leaves.