In this post i will show Tomcat Clustering in Docker Container. In my previous post i discussed how to achieve tomcat clustering with Nginx Front end . Its almost same scenario, but this time we will achieve via docker container. Docker Docker is an open-source project that automates the deployment of applications inside software containers , by providing an additional layer of abstraction and automation of operating-system-level virtualization on Linux . [4] Docker uses resource isolation features of the Linux kernel such as cgroups and kernel namespaces to allow independent "containers" to run within a single Linux instance, avoiding the overhead of starting and maintaining virtual machine --Wikipedia