The real magic happens when you have Kubernetes schedule and coordinate your Docker containers. This will give you higher availability and more resiliency.
A managed switch allows you to copy traffic from one or more ports onto a designated mirror port. You'll have a copy of all traffic moving through your designated ports onto a port
You can't solve a problem you don't understand. Before you jump into action, bring your issues into the right level of focus with the Ladder of Abstraction.