Logentries is a log management and analytics service, which takes log files and produces useful searchable information and statistics.
Note: the Logentries project is being sunsetted so new instances of Logentries are no longer available from the provider.
You can import Logentries data into Hosted Graphite using the leexportpy tool.
Logentries have a useful blog post to help you get started.
You just neeed to add your Hosted Graphite API key to config.ini:
api_key = <Your API key>