A Child Container provides the easiest way to manage the increasing load. When the system is experiencing sudden load in traffic and a single container is not able to cope up with the load, we can easily create a set of child containers and distribute the load among them, rather than creating a complete new container.
Login to FMC using localhost:8181
Now, follow the path: Runtime → container → +Create (button on right hand side)
Enter details like child name, parent container Number of instances etc.
Click Create And Start Container
A Child container acts as a normal container only.
To stop a child container, follow the path: Runtime → Container → Child1
Click Stop to stop the Child Container.
To start a child container, follow the path: Runtime → Container → Child1
Click Start to start the child container.