05-kubernetes-worker.yml

---

# Just get setup information for controllers
- hosts: tag_krole_controller

- hosts: tag_krole_worker
  vars:
    docker_binary: "https://get.docker.com/builds/Linux/x86_64/docker-1.11.2.tgz"
    cni_tar: "https://storage.googleapis.com/kubernetes-release/network-plugins/cni-c864f0e1ea73719b8f4582402b0847064f9883b0.tar.gz"
    k8s_worker_binaries:
      - "https://storage.googleapis.com/kubernetes-release/release/v1.3.0/bin/linux/amd64/kubectl"
      - "https://storage.googleapis.com/kubernetes-release/release/v1.3.0/bin/linux/amd64/kube-proxy"
      - "https://storage.googleapis.com/kubernetes-release/release/v1.3.0/bin/linux/amd64/kubelet"
  tasks:

    - include: common-kubernetes.yml

    #
    # Docker
    #

    - name: download docker tar file
      get_url: 
        url: "{{ docker_binary }}"
        dest: "/home/ubuntu/{{ docker_binary | basename }}"

    - name: unarchive docker tar file
      unarchive:
        src: "/home/ubuntu/{{ docker_binary | basename }}"
        dest: "/home/ubuntu/"
        copy: False
 
    - name: copy docker binary to /usr/bin
      shell: cp docker/docker* /usr/bin
      args:
        chdir: "/home/ubuntu"
        creates: "/usr/bin/docker"

    - name: install docker.service file
      template:
        src: "docker.service"
        dest: "/etc/systemd/system/"
      
    - name: enable and start docker
      shell: systemctl {{ item }}
      with_items:
        - "daemon-reload"
        - "enable docker"
        - "start docker"

    - name: check docker version
      shell: docker version


    #
    # kubelet
    #
 
    - name: ensure /opt/cni exists
      file:
        path: "/opt/cni"
        state: "directory"

    - name: download cni tar file
      get_url: 
        url: "{{ cni_tar }}"
        dest: "/home/ubuntu/"
        
    - name: unarchive cni tar file
      unarchive:
        src: "/home/ubuntu/{{ cni_tar | basename }}"
        dest: "/opt/cni"
        copy: False

    - name: download and install k8s worker binaries
      get_url:
        url: "{{ item }}"
        dest: "/usr/bin/"
        mode: "0755"
      with_items: "{{ k8s_worker_binaries }}"

    - name: ensure /var/lib/kubelet exists
      file:
        path: "/var/lib/kubelet"
        state: "directory"

    - name: install /var/lib/kubelet/kubeconfig from template
      template:
        src: "kubeconfig"
        dest: "/var/lib/kubelet/kubeconfig"

    - name: install the kubelet and kub-proxy service files
      template:
        src: "{{ item }}"
        dest: "/etc/systemd/system/{{ item }}"
      with_items:
        - "kubelet.service"
        - "kube-proxy.service"

    - name: systemctl daemon-reload
      shell: systemctl daemon-reload

    - name: restart services
      shell: systemctl {{ item[0] }} {{ item[1] }}
      with_nested:
        - [ "enable", "start" ]
        - [ "kubelet", "kube-proxy" ]