user-data.yml

#cloud-config

#ssh_authorized_keys:
#  - ssh-rsa key1 foo@gmail
# Uncomment ^ PUT YOUR KEYS HERE IN A YAML ARRAY

timezone: UTC

apt:
    sources:
        docker:
            # use the xenial channel since docker 17.03 doesn't exist on the
            # bionic channel (k8s' latest validated docker version is 17.03)
            source: "deb https://download.docker.com/linux/ubuntu xenial stable"
            keyid: "9DC858229FC7DD38854AE2D88D81803C0EBFCD88" 
        kubernetes:
            # k8s doesn't have a bionic release channel yet
            source: "deb https://apt.kubernetes.io/ kubernetes-xenial main"
            keyid: "54A647F9048D5688D7DA2ABE6A030B21BA07F4FB"

packages:
    - [docker-ce, 17.03*]
    - curl
    - [kubelet, 1.11*]
    - [kubeadm, 1.11*]
    - [kubectl, 1.10*] # see: https://github.com/kubernetes/kubernetes/issues/65221


# force load certain kernel modules to resolve erroneous preflight error.
# see: https://github.com/kubernetes/kubeadm/issues/975
write_files:
    - path: /etc/modules-load.d/kube-ipvs.conf
      content: |
          ip_vs
          ip_vs_sh
          ip_vs_wrr
          ip_vs_rr
          nf_conntrack_ipv4

runcmd:
    - systemctl restart systemd-modules-load