Merge pull request #1 from mlafeldt/kubernetes

Allow installing Kubernetes on top of DCOS

Makefile

@@ -26,6 +26,9 @@ destroy: venv
 		-e dcos_channel="$(DCOS_CHANNEL)" \
 		-e dcos_master_setup="$(DCOS_MASTER_SETUP)"
 
+kubernetes: venv
+	venv/bin/ansible-playbook -v kubernetes.yml
+
 dashboard:
 	@open $$(./dcos config show core.dcos_url)
 

README.md

@@ -64,14 +64,20 @@ your browser:
 
 ### Use DCOS CLI
 
-After running `make bootstrap`, you can also use the `./dcos` script to remotely
+After bootstrapping DCOS, you can also use the `./dcos` script to remotely
 manage your cluster. The script is a convenience wrapper around the [dcos tool]
-provided by Mesosphere.
+provided by Mesosphere. Run `./dcos` without parameters to get a list of all
+available commands.
 
-This example shows how to use the CLI to install and use Kubernetes:
+### Install Kubernetes
+
+This will deploy [Kubernetes] on top of DCOS:
+
+    make kubernetes
+
+Afterwards, run the `kubectl` subcommand to control the Kubernetes cluster
+manager. For example:
 
-    ./dcos package update
-    ./dcos package install --yes kubernetes
     ./dcos kubectl run nginx --image=nginx
 
 ### Destroy DCOS cluster
@@ -98,3 +104,4 @@ infrastructure changes.
 [Mesosphere DCOS Community Edition EULA]: https://docs.mesosphere.com/community-edition-eula/
 [dcos tool]: https://docs.mesosphere.com/using/cli/
 [blog]: https://mlafeldt.github.io/blog/getting-started-with-the-mesosphere-dcos/
+[Kubernetes]: http://kubernetes.io/

kubernetes.yml

@@ -0,0 +1,16 @@
+- hosts: localhost
+  connection: local
+  gather_facts: False
+  tasks:
+    - name: Get list of installed DCOS packages
+      command: ./dcos package list
+      register: package_list
+      ignore_errors: True
+
+    - name: Update DCOS package index
+      command: ./dcos package update
+      when: "'/kubernetes' not in package_list.stdout"
+
+    - name: Install Kubernetes on DCOS
+      command: ./dcos package install --yes kubernetes
+      when: "'/kubernetes' not in package_list.stdout"