Was this an older build? We had serious issues at first, but our setup is pretty stable these days.
I love everything about using Influx but it would die and never restart and every time it would some crash on semacquire. I'll have to try it again since I need to check out this Grafana update anyway.
The two game changers are using the UDP line protocol instead of HTTP, and making sure you are batch-processing inputs. Fixing these settings is the difference between an instances that crashes all the time, and a purring one.
Shameless plug - I recently published a log router in Golang. It sends data to influx too ! (github.com/agnivade/funnel)