Some of my servers have been experiencing extremely heavy traffic over the past week or so and I’ve struggled to debug the reason for it.
Running iftop I see the following which seems to be the root of the problem:
This is a server at around 60% CPU. Others are at 100%. At any given instance the server is receiving 3-12mb of data from: cockney.4.mongolayer.com (I’m using Compose for hosting).
The server below is constantly at 100% CPU and is receiving 15-25mb consistently:
(Exactly the same settings for both servers. Everything about them is the same except for the IP basically).
How do I determine why is all this data is being sent and how to stop it?