Create setup_kubernetes

_docs/1-Demo/setup_kubernetes.md

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+---
+layout: page
+title: Setup
+permalink: /docs/demo-setup.html
+redirect_from: /docs/demo/setup/
+category: Demo
+order: 1
+---
+
+## Before you begin
+
+If you don't already have a Kubernetes environment, you can install kubernetes locally by using [Minikube](https://github.com/kubernetes/minikube).
+
+## Setting up the Control Plane
+
+The Amalgam8 Control Plane consists of two components: the
+[service registry](/docs/control-plane-registry.html) and the
+[route controller](/docs/control-plane-controller.html).  In addition to these two
+components, for the purposes of this demo, a stock ELK stack is also
+included as part of the control plane deployment scripts, to collect logs
+from the microservices in the application.
+
+The Amalgam8 Control Plane contains an ELK stack.
+Elasticsearch 5.0 [requires increasing the max map count](https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html)
+for certain linux environments such as Vagrant VMs, Docker Toolbox and Minikube.
+If you are running any of these tools, run the following command on those VMs:
+
+```
+bash
+sudo sysctl -w vm.max_map_count=262144
+```
+
+SSH into the minikube virtual machine by running `minikube ssh`, and run:
+
+```
+bash
+kubectl create -f examples/k8s-controlplane.yaml
+```
+
+## Setting up the Amalgam8 CLI
+
+The `a8ctl` command line utility provides a convenient way to setup and
+manage routes across microservices as well as inspect the state of the
+system. The CLI can be installed via the `pip` tool (available as part of
+standard Python installation) directly from Python's package repository or
+from `a8ctl` [github repository](https://github.com/amalgam8/a8ctl).
+
+1. Run the folowing command to install the a8ctl into your home directory:
+
+```
+bash
+pip install --user a8ctl
+```
+
+1. Add the location of the `a8ctl` command to the `PATH` environment
+variable. On OS X, run
+
+```
+bash
+export PATH=$PATH:${HOME}/Library/Python/2.7/bin
+```
+
+On Linux, run
+
+```
+bash
+export PATH=$PATH:${HOME}/.local/bin
+```
+
+To use the Amalgam8 CLI (`a8ctl`) for the demo walkthroughs we need
+to setup two environment variables: `A8_CONTROLLER_URL` and
+`A8_REGISTRY_URL`. These variables should point to the publicly accessible
+REST endpoints exposed by the Amalgam8 controller and registry respectively. The value of these variables depends on the environment where you setup the
+control plane.
+
+1. On minikube, run:
+
+```
+bash
+export A8_CONTROLLER_URL=http://$(minikube ip):31200
+export A8_REGISTRY_URL=http://$(minikube ip):31300
+```
+
+Now that you've configured Amalgam8 for Kubernetes, let's move onto running the demo.