This is a short and hopefully useful blog post on adding network latency and packet loss to nodes for testing the effect of latency and packet loss in a small local test environment. The post assumes that you already have a set of nodes running in a test environment and focusses introducing simulated latencies and other network phenomena using the unix ‘tc’ tool.

For the uninitiated and even the experienced git has a whole raft of confusing commands. The purpose of this article is to provide you with just enough git to do what we need. The purposes of this example I will be using a very simple private repo I created on my personal github account called “test-branching”. The basic workflow involves cloning a repository from https://github.com and then making some additions, deletions and modifications on your local laptop before eventually…