Indices are provided with a health status. This is something ELK provides on its own. Green, yellow, red and grey if I remember correctly. Also if I look at your indices I notice how there is a logstash-2015.11.19 among them.
For me at least it isn't the 19th yet but might be mistaken about that.
Regarding the logs not outputting, Maybe its an idea to check why the indices are yellow. Might not prove to be anything useful for your situation but you never know.