1-installPrerequisiteTools.sh

#!/bin/bash

# verify first running on Ubuntu for the installation scripts
# assume that
if [ "$(uname -a | grep Ubuntu)" == "" ]; then
  echo "Must be running on Ubuntu to run this script"
  exit 1
fi

# load in the shared library and validate argument
source ./deploymentArgument.lib
DEPLOYMENT=$1
validate_deployment_argument $DEPLOYMENT

# specify versions to install
HUB_VERSION=2.11.1
HELM_VERSION=2.12.3
# eks
EKS_KUBECTL_VERSION=1.11.5
EKS_IAM_AUTHENTICATOR_VERSION=1.11.5
EKS_EKSCTL_VERSION=latest_release
# aks
# az aks get-versions --location eastus --output table
AKS_KUBECTL_VERSION=1.12.7
GKE_KUBECTL_VERSION=1.13

clear
echo "======================================================================"
echo "About to install required tools"
echo "Deployment Type: $DEPLOYMENT"
echo ""
echo "NOTE: this will download and copy the executable into /usr/local/bin"
echo "      if the utility finds a value when running 'command -v <utility>'"
echo "      that utility will be concidered already installed"
echo ""
echo "Named Versions to be installed:"
echo "  HUB_VERSION                   : $HUB_VERSION"
echo "  HELM_VERSION                  : $HELM_VERSION"
case $DEPLOYMENT in
  eks)
    echo "  EKS_IAM_AUTHENTICATOR_VERSION : $EKS_IAM_AUTHENTICATOR_VERSION"
    echo "  EKS_KUBECTL_VERSION           : $EKS_KUBECTL_VERSION"
    echo "  EKS_EKSCTL_VERSION            : $EKS_EKSCTL_VERSION"
    ;;
  aks)
    echo "  AKS_KUBECTL_VERSION           : $AKS_KUBECTL_VERSION"
    ;;
  gke)
    echo "  GKE_KUBECTL_VERSION           : $GKE_KUBECTL_VERSION"
    ;;
esac
echo "======================================================================"
read -rsp $'Press ctrl-c to abort. Press any key to continue...\n' -n1 key

# Installation of helm
# https://helm.sh/docs/using_helm/#from-the-binary-releases
if ! [ -x "$(command -v helm)" ]; then
  echo "----------------------------------------------------"
  echo "Downloading 'helm' utility ..."
  rm -rf helm-v$HELM_VERSION-linux-amd64.tar.gz
  wget https://storage.googleapis.com/kubernetes-helm/helm-v$HELM_VERSION-linux-amd64.tar.gz
  tar -zxvf helm-v$HELM_VERSION-linux-amd64.tar.gz
  echo "Installing 'helm' utility ..."
  sudo mv linux-amd64/helm /usr/local/bin/helm
  sudo mv linux-amd64/tiller /usr/local/bin/tiller
fi

# Installation of hub
# https://github.com/github/hub/releases
if ! [ -x "$(command -v hub)" ]; then
  echo "----------------------------------------------------"
  echo "Downloading git 'hub' utility ..."
  rm -rf hub-linux-amd64-$HUB_VERSION*
  wget https://github.com/github/hub/releases/download/v$HUB_VERSION/hub-linux-amd64-$HUB_VERSION.tgz
  tar -zxvf hub-linux-amd64-$HUB_VERSION.tgz
  echo "Installing git 'hub' utility ..."
  sudo ./hub-linux-amd64-$HUB_VERSION/install
  rm -rf hub-linux-amd64-$HUB_VERSION*
fi

# Installation of jq
# https://github.com/stedolan/jq/releases
if ! [ -x "$(command -v jq)" ]; then
  echo "----------------------------------------------------"
  echo "Installing 'jq' utility ..."
  sudo apt-get update
  sudo apt-get --assume-yes install jq
fi

# Installation of jq
# https://github.com/mikefarah/yq
if ! [ -x "$(command -v yq)" ]; then
  sudo add-apt-repository ppa:rmescandon/yq -y
  sudo apt update
  sudo apt install yq -y
fi

case $DEPLOYMENT in
  eks)
    # AWS CLI
    if ! [ -x "$(command -v aws)" ]; then
      echo "----------------------------------------------------"
      echo "Installing 'aws cli' ..."
      sudo apt install awscli -y
    fi
    # kubectl
    if ! [ -x "$(command -v kubectl)" ]; then
      echo "----------------------------------------------------"
      echo "Downloading 'kubectl' ..."
      curl -o kubectl https://amazon-eks.s3-us-west-2.amazonaws.com/$EKS_KUBECTL_VERSION/2018-12-06/bin/linux/amd64/kubectl 
      echo "Installing 'kubectl' ..."
      chmod +x ./kubectl
      sudo mv ./kubectl /usr/local/bin/kubectl
    fi
    # AWS specific tools
    if ! [ -x "$(command -v aws-iam-authenicator)" ]; then
      echo "----------------------------------------------------"
      echo "Downloading 'aws-iam-authenticator' ..."
      https://docs.aws.amazon.com/eks/latest/userguide/install-aws-iam-authenticator.html
      rm aws-iam-authenticator
      curl -o aws-iam-authenticator https://amazon-eks.s3-us-west-2.amazonaws.com/$EKS_IAM_AUTHENTICATOR_VERSION/2018-12-06/bin/linux/amd64/aws-iam-authenticator
      echo "Installing 'aws-iam-authenticator' ..."
      chmod +x ./aws-iam-authenticator
      sudo mv ./aws-iam-authenticator /usr/local/bin/aws-iam-authenticator 
    fi
    # eksctl - utility used to provison eks cluster
    if ! [ -x "$(command -v eksctl)" ]; then
      echo "----------------------------------------------------"
      echo "Downloading 'eksctl' ..."
      rm -rf eksctl*.tar.gz
      rm -rf eksctl
      curl --silent --location "https://github.com/weaveworks/eksctl/releases/download/$EKS_EKSCTL_VERSION/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C .
      sudo mv eksctl /usr/local/bin/eksctl
    fi
    ;;
  ocp)
    # Openshift specific tools
    if ! [ -x "$(command -v oc)" ]; then
      echo "----------------------------------------------------"
      echo "Downloading 'oc' ..."
      wget https://github.com/openshift/origin/releases/download/v3.11.0/openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz 
      echo "Installing 'oc' ..."
      tar xzf openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz
      cd openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit
      chmod +x oc
      mv oc /usr/local/bin/oc
      rm -rf openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit* 
    fi
    ;;
  aks)
    # az cli
    # https://docs.microsoft.com/en-us/cli/azure/install-azure-cli-apt?view=azure-cli-latest
    if ! [ -x "$(command -v az)" ]; then
      echo "----------------------------------------------------"
      echo "Installing Azure CLI"
      echo "----------------------------------------------------"
      curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
    fi
    # kubectl
    if ! [ -x "$(command -v kubectl)" ]; then
      echo "----------------------------------------------------"
      echo "Downloading 'kubectl' ..."
      sudo az aks install-cli --client-version $AKS_KUBECTL_VERSION
    fi
    # deal with permission of azure cli folder
    sudo chown -R $(whoami):$(whoami) ~/.azure
    ;;
  gke)
    # Google specific tools
    if ! [ -x "$(command -v gcloud)" ]; then
      echo "----------------------------------------------------"
      echo "Installing gcloud"
      GKE_SDK=google-cloud-sdk-241.0.0-linux-x86_64.tar.gz
      rm -rf $GKE_SDK
      rm -rf google-cloud-sdk/
      curl -O https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/$GKE_SDK
      tar zxvf $GKE_SDK google-cloud-sdk
      ./google-cloud-sdk/install.sh
    fi

    # Google specific tools
    if ! [ -x "$(command -v kubectl)" ]; then
      echo "----------------------------------------------------"
      echo "Installing kubectl"
      # https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl
      curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
      echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
      sudo apt-get update
      sudo apt-get install -y kubectl
    fi
    ;;
esac

echo ""
echo "===================================================="
echo "Installation complete."
echo "===================================================="

# run a final validation
./validatePrerequisiteTools.sh $DEPLOYMENT

case $DEPLOYMENT in
  eks)
    echo ""
    echo "****************************************************"
    echo "****************************************************"
    echo "If you have not done so already, run this command"
    echo "to configure the aws cli"
    echo ""
    echo "aws configure"
    echo "  enter your AWS Access Key ID"
    echo "  enter your AWS Secret Access Key ID"
    echo "  enter Default region name example us-east-1"
    echo "  Default output format, enter json"
    echo "****************************************************"
    echo "****************************************************"
    ;;
  gke)
    echo ""
    echo "****************************************************"
    echo "****************************************************"
    echo "If you have not done so already, run this command"
    echo "to configure gcloud:"
    echo ""
    echo "'gcloud init'"
    echo "  Choose option '[2] Log in with a new account'"
    echo "  Choose 'Y' for 'Are you sure you want to "
    echo "     authenticate with your personal account?'"
    echo "  Copy the URL to a browser and copy the verification code once you login"
    echo "  Paste the verification code"
    echo "  Choose default project"
    echo "  Choose 'Y' for 'Do you want to configure a "
    echo "     default Compute Region and Zone?'"
    echo "  Choose option to pick default region and zone"
    echo "    for example: [2] us-east1-c"
    echo ""
    echo "  Run 'gcloud config list' to view what you entered."
    echo "****************************************************"
    echo "****************************************************"
    ;;
  aks)
    echo ""
    echo "****************************************************"
    echo "****************************************************"
    echo "If you have not done so already, run this command"
    echo "to login into azure. "
    echo ""
    echo "az login"
    echo "  This will ask you to open a browser with a code"
    echo "  and then login."
    echo ""
    echo "then run 'az account list'"
    echo "to show your accounts to verify connection"
    echo "****************************************************"
    echo "****************************************************"
    ;;
esac