Logging is rated on 8 different levels. â€œ0â€³ or Emergency is for catastrophic errors like shutdown or loss of connectivity to the inside. Level â€œ7â€³ is debugging information, REALLY in-depth information on even the smallest detail. Debugging should only be used for short periods of time to isolate an issue because it generates so much information. Whatever logging level you use, it will automatically log the lower levels as well. For example, a good place to start is logging level 4 or the warning level. A good thing to remember is when you set logging 4, you get levels 3, 2, 1 and 0, as well.