iPerf is a command-line tool to measure the bandwidth and quality of a network link. It requires two hosts with the tool installed in order to execute the test with one functioning as a ‘server’ and the other as the ‘client’. iPerf can be used to test:

• Jitter ( measured via UDP)
• Datagram loss (measured via UDP)
• Bandwidth (measured via TCP)

You can combine this information with the average, min, and max latency results from a prolonged ping output in order to get a better idea about the quality of your link.

I set this up as a quick and dirty lab environment to test a few things for a customer using t2.micro instances on AWS. This is not a supported configuration since the t2.micro instances only have a single processor. One thing not mentioned here is the security policy between the nodes. Kubernetes will require the following ports in order to function:

Master Nodes:

Worker Nodes: