Basic recipes using the ansible cloudstack module to create ssh keys, sec group etc and deploy Kubernetes on CoreOS.

You will need Ansible and cs :)

$ sudo apt-get install -y python-pip libssl-dev
$ sudo pip install cs
$ sudo pip install sshpubkeys
$ sudo apt-get install software-properties-common
$ sudo apt-add-repository ppa:ansible/ansible
$ sudo apt-get update
$ sudo apt-get install ansible

Create a ~/.cloudstack.ini file with your creds and cloudstack endpoint:

[cloudstack]
endpoint = <cloudstackapiendpoint>
key = <apiaccesskey> 
secret = <apisecretkey> 
method = post

We need to use the http POST method to pass the userdata to the coreOS instances.

We can also use variables:

CLOUDSTACK_ENDPOINT=<cloudstackapiendpoint>
CLOUDSTACK_KEY=<apiaccesskey>
CLOUDSTACK_SECRET=<apisecretkey>
CLOUDSTACK_METHOD=post

On CloudStack server you have to install libselinux-python

yum install libselinux-python

$ git clone https://github.com/apachecloudstack/k8s
$ cd ansible-kubernetes

$ ansible-playbook k8s.yml

Some variables can be edited in the k8s.yml file. This will start a Kubernetes master node and a number of compute nodes. This is all setup via coreOS instances and passing userdata.

Check the tasks and templates in roles/k8s

If you retrieve an error during the ssh key copy:

"msg": "file (/root/.ssh/id_rsa_k8s) is absent, cannot continue",

Please run the Playbook a second time (related issue)

That's a bonus to this work, there is a playbook to create an independent etcd cluster.

$ ansible-playbook etcd.yml

Edit some of the variables in the etcd.yml file directly.

If you want to run it on a CloudStack environment with VMware ESX hosts cluster. You have to comment the lines refer to secgroups and secgroup_rules (specific to KVM) : k8s.yml k8s/tasks/main.yml k8s/tasks/create_vm.yml etcd.yml etcd/tasks/main.yml