Initial commit

.gitignore

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+.DS_Store
+files/*.yaml

init-cluster.sh

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+#!/bin/bash
+
+set -e
+
+BASEDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )
+source "${BASEDIR}/scripts/functions.sh"
+
+# Set the backspace key here.
+# Create a gif of the script?
+
+# ------------------------------------------------------------------------------
+# Welcome
+# ------------------------------------------------------------------------------
+
+echo -e "Welcome, this script will help ease the process of setting up a" \
+        "Kubernetes cluster from scratch on DigitalOcean."
+echo -e "First, we’ll check for any necessary dependencies and install them if necessary."
+echo -e "After this you will be guided through each step of the process, being prompted" \
+        "for the necessary information needed for configuration."
+echo -e "Let’s start by checking those dependencies, here's what we're looking for:"
+echo -e "Brew, Kubectl, Helm, and Doctl."
+echo
+
+read -p $'\033[33mPress enter to continue...\033[39m'
+echo
+
+# ------------------------------------------------------------------------------
+# Check Dependencies: Brew, Kubectl, Helm, Doctl.
+# ------------------------------------------------------------------------------
+
+"${BASEDIR}"/scripts/dependency-check.sh
+
+# ------------------------------------------------------------------------------
+# Create Cluster
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to create a new Kubernetes cluster?\033[39m"; then
+  echo
+  "${BASEDIR}"/scripts/create-cluster.sh
+
+else # Copy Config
+  echo
+  if ask "\033[33mWould you like to save an existing config?\033[39m" Y; then
+    echo
+    "${BASEDIR}"/scripts/copy-config.sh
+  fi
+  echo
+fi
+
+# ------------------------------------------------------------------------------
+# Cluster Initializaton (Helm/Tiller)
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to initialize Helm/Tiller?\033[39m" Y; then
+  echo
+  "${BASEDIR}"/scripts/install-helm-tiller.sh
+else
+  echo
+fi
+
+# ------------------------------------------------------------------------------
+# Nginx Ingress Setup
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to install the Nginx Ingress?\033[39m" Y; then
+  echo
+  "${BASEDIR}"/scripts/install-nginx-ingress.sh
+else
+  echo
+fi
+
+# ------------------------------------------------------------------------------
+# Certificate Manager Setup
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to install Cert Manager?\033[39m" Y; then
+  echo
+  "${BASEDIR}"/scripts/install-cert-manager.sh
+else
+  echo
+fi
+
+# ------------------------------------------------------------------------------
+# Jenkins Setup
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to install and configure Jenkins?\033[39m" Y; then
+  echo
+  "${BASEDIR}"/scripts/install-jenkins.sh
+else
+  echo
+fi
+
+# ------------------------------------------------------------------------------
+# Harbor Setup
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to install and configure Harbor?\033[39m" Y; then
+  echo
+  "${BASEDIR}"/scripts/install-harbor.sh
+else
+  echo
+fi
+
+# ------------------------------------------------------------------------------
+# Dashboard Setup
+# ------------------------------------------------------------------------------
+
+if ask "\033[33mWould you like to install Kubernetes Dashboard?\033[39m" Y; then
+  echo
+  "${BASEDIR}"/scripts/install-dashboard.sh
+else
+  echo
+fi

readme.md

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+# Kubernetes Scaffolding Script
+
+## What is this?
+
+While experimenting with Kubernetes on DigitalOcean, I found myself spinning up clusters fairly often to try new things. I got very familiar with the process of doing this and decided to [write a guide](https://gist.github.com/DefrostedTuna/1cf0367b3b121d82a0591e177d6887b8) covering how to set up a barebones cluster, along with common tools that I personally use. This bash script project is an extension of that guide, automating the process of setting up a cluster on DigitalOcean and installing a subset of software to get fresh cluster up and running quickly.
+
+## What are the requirements?
+
+* MacOS Mojave (Untested on other Unix based systems, or other versions of MacOS)
+* Homebrew
+* Kubectl
+* Helm
+* Doctl
+
+## What does it install and configure?
+
+The script will first and foremost check for the proper dependencies. These dependencies include:
+
+* Homebrew
+* Kubectl
+* Helm
+* Doctl
+
+If these dependencies are not found on the system, the script will attempt to install them for you.
+
+**Note:** The Homebrew installation may take a considerable amount of time if the X Code Development Tools are not found on your system.
+
+Once these dependencies are present the script will configure the following:
+
+* Creating a Kubernetes cluster on DigitalOcean
+* Copying a kubeconfig file to your local machine (If opted against creating a cluster)
+* Initializing Helm/Tiller
+* Installing an Nginx Ingress
+* Installing Cert Manager
+* Installing and configuring Jenkins
+* Installing and configuring Harbor
+* Installing Kubernetes Dashboard
+
+**Note:** Setting up the Ingress *WILL* configure a DigitalOcean Load Balancer. This is a service that DigitalOcean charges for, so keep that in mind.
+
+## How do I use this script?
+
+Clone the repository onto your local machine.
+
+```
+https://github.com/DefrostedTuna/kubernetes-scaffolding.git && cd kubernetes-scaffolding
+```
+
+Make the script executable.
+
+```
+chmod +x init-cluster.sh && chmod -R +x scripts
+```
+
+Run the script.
+
+```
+./init-cluster.sh
+```
+
+The script will guide you through the setup process, prompting for input when necessary. Follow the instructions in the script and you'll be good to go!

scripts/copy-config.sh

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+#!/bin/bash
+
+BASEDIR=$(dirname "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )")
+source "${BASEDIR}/scripts/functions.sh"
+
+# -----------------------------------------------------------------------------
+# Copy Config
+# -----------------------------------------------------------------------------
+
+echo -e "\033[33mWhich cluster would you like to save the configuration for?\033[39m"
+
+IFS=$'\n'
+KUBE_CLUSTERS=($(doctl kubernetes cluster list | awk '{if(NR>1)print $0}'))
+unset IFS
+
+select_option "${KUBE_CLUSTERS[@]}"
+choice=$?
+
+TARGET_CLUSTER_ID=$(echo ${KUBE_CLUSTERS[$choice]} | awk '{print $1}')
+TARGET_CLUSTER_NAME=$(echo ${KUBE_CLUSTERS[$choice]} | awk '{print $2}')
+TARGET_CLUSTER_REGION=$(echo ${KUBE_CLUSTERS[$choice]} | awk '{print $3}')
+TARGET_CLUSTER_VERSION=$(echo ${KUBE_CLUSTERS[$choice]} | awk '{print $4}')
+
+# Save the config, throwing an error is something unexpected happens.
+doctl kubernetes cluster kubeconfig save "${TARGET_CLUSTER_ID}" > /dev/null
+if [[ $? -eq 0 ]]; then
+  echo -e "\033[32mThe kubeconfig has been successfully saved to $HOME/.kube/config.\033[39m"
+else
+  echo -e "\033[31mThere was a problem saving the kubeconfig file.\033[39m"
+  exit 1
+fi
+# Set the new context, throwing an error is something unexpected happens.
+kubectl config use-context "do-${TARGET_CLUSTER_REGION}-${TARGET_CLUSTER_NAME}" > /dev/null
+if [[ $? -eq 0 ]]; then
+  echo -e "\033[32mKubectl has been configured to use ${TARGET_CLUSTER_NAME}.\033[39m"
+else
+  echo -e "\033[31mThere was a problem setting the default context.\033[39m"
+  exit 1
+fi

scripts/create-cluster.sh

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+#!/bin/bash
+
+BASEDIR=$(dirname "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )")
+source "${BASEDIR}/scripts/functions.sh"
+
+# ------------------------------------------------------------------------------
+# Create Cluster
+# ------------------------------------------------------------------------------
+# In order to create a cluster we need the following:
+# Cluster Name, Region, Version, Node Size, Node Count
+# ------------------------------------------------------------------------------
+
+# Cluster Name
+# TODO: Add validation to this. No empty values, double check if spaces are allowed.
+echo -e "\033[33mWhat would you like to name this cluster?\033[39m"
+read -p "Cluster name: " CLUSTER_NAME
+echo
+
+echo "Fetching Kubernetes information, please wait..."
+echo
+
+REGIONS=($(doctl k8s options regions | awk '{if(NR>1)print $1}'))
+VERSIONS=($(doctl k8s options versions | awk '{if(NR>1)print $1}'))
+NODE_SIZES=($(doctl k8s options sizes | awk '{if(NR>1)print $1}'))
+
+# Cluster Region
+echo -e "\033[33mWhat region would you like to use for your cluster?\033[39m"
+select_option "${REGIONS[@]}"
+choice=$?
+CLUSTER_REGION="${REGIONS[$choice]}"
+
+# Kubernetes Version
+echo -e "\033[33mWhich version of Kubernetes would you like to use?\033[39m"
+select_option "${VERSIONS[@]}"
+choice=$?
+CLUSTER_VERSION="${VERSIONS[$choice]}"
+
+# Node Size
+echo -e "\033[33mPlease specify the node size that you would like to use for this cluster.\033[39m"
+select_option "${NODE_SIZES[@]}"
+choice=$?
+NODE_SIZE="${NODE_SIZES[$choice]}"
+
+# Node Count
+echo -e "\033[33mHow many nodes would you like to provision for this cluster?\033[39m"
+
+while true; do
+  read -p "Desired node count: " NODE_COUNT
+  # Make sure that the entry is a number that is between 1-10.
+  if [[ $NODE_COUNT -gt 0 && $NODE_COUNT -lt 11 ]]; then
+    break
+  else
+    echo -e "\033[31mError: Given value is not a valid entry. The count must be from 1 to 10. Please try again.\033[39m"
+  fi
+done
+echo
+
+# Cluster Creation
+echo -e "A Kubernetes cluster with the following configuration will be created.\033[39m"
+echo "Name: kube-cluster"
+echo "Region: nyc1"
+echo "Version: 1.13.2-do.0"
+echo "Node Size: s-1vcpu-2gb"
+echo "Node Count: 1"
+echo
+
+echo "Creating a new Kubernetes cluster, please wait a few minutes..."
+doctl kubernetes cluster create "${CLUSTER_NAME}" \
+  --region "${CLUSTER_REGION}" \
+  --version "${CLUSTER_VERSION}" \
+  --size "${NODE_SIZE}" \
+  --count "${NODE_COUNT}"
+
+if [[ $? -eq 0 ]]; then
+  echo -e "\033[32mThe Kubernetes cluster has been successfully created!\033[39m"
+else
+  echo -e "\033[31mThere was a problem creating the Kubernetes cluster.\033[39m"
+  exit 1
+fi
+
+# Set the proper context for the cluster.
+CLUSTER_CONTEXT="do-${CLUSTER_REGION}-${CLUSTER_NAME}"
+kubectl config use-context "${CLUSTER_CONTEXT}" > /dev/null
+
+if [[ $? -eq 0 ]]; then
+  echo -e "\033[32mKubectl has been configured to use $CLUSTER_CONTEXT as the default context.\033[39m"
+else
+  echo -e "\033[31mThere was a problem setting the default context for kubectl.\033[39m"
+  exit 1
+fi
+
+echo "Please wait until the nodes are up and running..."
+until [[ $(kubectl get nodes 2>/dev/null | grep "\sReady\s") ]]; do
+  echo -n "."
+  sleep 1
+done
+echo
+
+echo -e "\033[32mKubernetes is up and running!\033[39m"
+echo