Adding support for installing Kubernetes 1.8.4

README.md

@@ -59,12 +59,13 @@ If you need to remove Contiv from Docker Swarm and return to your original state
 
 ### Prerequisites
 
-* Kubernetes 1.4.x, 1.5.x and 1.6.2+ are supported with the following instructions.
+* Kubernetes 1.4.x, 1.5.x, 1.6.2+, and 1.8.4+ are supported with the following instructions.
 * CentOS 7.x operating system
 * Install Kubernetes:
  1. kubeadm installs the latest Kubernetes version. <br>
  For Kubernetes 1.4, see an example script [here.](https://github.com/contiv/install/blob/master/cluster/k8s1.4/k8smaster.sh)
  For Kubernetes 1.6, see an example script [here.](https://github.com/contiv/install/blob/master/cluster/k8s1.6/k8smaster.sh)
+ For Kubernetes 1.8, see an example script [here.](https://github.com/contiv/install/blob/master/cluster/k8s1.8/k8smaster.sh)
  1. Replace step (3/4) in the kubeadm install guide with the following Contiv Installation Instructions. Contiv installation can be done after completing step (4/4).
  1. Instructions to install Kubernetes are available [here.](http://kubernetes.io/docs/getting-started-guides/kubeadm/)
  1. **Kubernetes 1.4 NOTE:** A recent kubeadm update has rendered the latest kubeadm unable to install Kubernetes 1.4. To workaround this issue, please use kubeadm version 1.6.0-0.alpha or earlier.

cluster/Vagrantfile

@@ -4,7 +4,7 @@ require 'rubygems'
 require 'fileutils'
 require 'yaml'
 
-DEFAULT_K8S_VERSION = 'v1.6.5'.freeze
+DEFAULT_K8S_VERSION = 'v1.8.4'.freeze
 
 # Guest OS versions for testing
 UBUNTU = 'ubuntu'.freeze
@@ -32,6 +32,7 @@ k8s_ver = ENV['CONTIV_K8S_VERSION'] || DEFAULT_K8S_VERSION
 orc_path = case k8s_ver
  when /^v1\.[45]\./ then 'k8s1.4/'
  when /^v1\.[67]\./ then 'k8s1.6/'
+ when /^v1\.[8]\./ then 'k8s1.8/'
  else
  raise "unsupported k8s version: #{k8s_ver}"
  end

cluster/k8s1.8/bootstrap_centos.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+set -euo pipefail
+
+if [ $EUID -ne 0 ]; then
+ echo "Please run this script as root user"
+ exit 1
+fi
+
+cat <<EOF >/etc/yum.repos.d/kubernetes.repo
+[kubernetes]
+name=Kubernetes
+baseurl=http://yum.kubernetes.io/repos/kubernetes-el7-x86_64
+enabled=1
+gpgcheck=0
+repo_gpgcheck=0
+EOF
+
+setenforce 0
+
+swapoff -a
+
+yum install -y docker kubelet-1.8.4 kubeadm-1.8.4 kubectl-1.8.4 kubernetes-cni-1.8.4 ntp
+
+systemctl enable docker && systemctl start docker
+systemctl enable kubelet && systemctl start kubelet
+systemctl enable ntpd && systemctl start ntpd
+
+if systemctl -q is-active firewalld; then
+ systemctl stop firewalld
+fi
+if systemctl -q is-enabled firewalld; then
+ systemctl disable firewalld
+fi
+
+systemctl stop ntpd
+ntpdate 1.ntp.esl.cisco.com || ntpdate pool.ntp.org
+systemctl start ntpd
+
+exit 0

cluster/k8s1.8/bootstrap_ubuntu.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -euo pipefail
+
+if [ $EUID -ne 0 ]; then
+ echo "Please run this script as root user"
+ exit 1
+fi
+
+apt-get update && apt-get install -y apt-transport-https
+curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
+cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
+deb http://apt.kubernetes.io/ kubernetes-xenial main
+EOF
+apt-get update
+# Install docker if you don't have it already.
+apt-get install -y docker.io
+apt-get install -y kubelet kubeadm kubectl kubernetes-cni
+apt-get install -y ntp
+
+systemctl enable ntpd && systemctl start ntpd
+systemctl -q is-active firewalld && systemctl stop firewalld || true
+systemctl -q is-enabled firewalld && systemctl disable firewalld || true
+
+if systemctl -q is-active firewalld; then
+ systemctl stop firewalld
+fi
+if systemctl -q is-enabled firewalld; then
+ systemctl disable firewalld
+fi

cluster/k8s1.8/k8smaster.sh

@@ -0,0 +1,7 @@
+kubeadm init --token=$1 --apiserver-advertise-address=$2 --skip-preflight-checks=true --kubernetes-version $3
+if [ "$#" -eq 4 ]; then
+ cp /etc/kubernetes/admin.conf /home/$4
+ chown $(id -u $4):$(id -g $4) /home/$4/admin.conf
+ echo "export KUBECONFIG=/home/$4/admin.conf" >> /home/$4/.$(basename $SHELL)rc
+ echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.$(basename $SHELL)rc
+fi

cluster/k8s1.8/k8sworker.sh

@@ -0,0 +1 @@
+kubeadm join --token=$1 --skip-preflight-checks=true $2:6443

install/k8s/install.sh

@@ -18,7 +18,7 @@ k8sversion=$($kubectl version --short | grep "Server Version")
 if [[ "$k8sversion" == *"v1.4"* ]] || [[ "$k8sversion" == *"v1.5"* ]]; then
  k8sfolder="k8s1.4"
 else
- k8sfolder="k8s1.6"
+ k8sfolder="rbac"
 fi
 
 #

install/k8s/uninstall.sh

@@ -10,7 +10,7 @@ k8sversion=$($kubectl version --short | grep "Server Version")
 if [[ "$k8sversion" == *"v1.4"* ]] || [[ "$k8sversion" == *"v1.5"* ]]; then
  k8sfolder="k8s1.4"
 else
- k8sfolder="k8s1.6"
+ k8sfolder="rbac"
 fi
 if [ "$#" -eq 1 ] && [ "$1" = "-h" ]; then
  echo "Usage: ./install/k8s/uninstall.sh to uninstall contiv"