Merge pull request #9 from coolsvap/1.21

Update to 1.21 for Ubuntu

Master/Vagrantfile

@@ -0,0 +1,56 @@
+BOX_IMAGE = "generic/ubuntu1804"
+SETUP_MASTER = true
+MASTER_IP = "192.168.26.10"
+POD_NW_CIDR = "10.244.0.0/16"
+KUBE_VERSION="1.21.1"
+
+$kubemasterscript = <<SCRIPT
+
+HOST_IP=`/sbin/ifconfig eth1 | egrep -o 'inet [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'  | cut -d' ' -f2`
+### init k8s
+kubeadm init --apiserver-advertise-address=${HOST_IP} --kubernetes-version=#{KUBE_VERSION} --pod-network-cidr=#{POD_NW_CIDR} --skip-token-print
+ip route add 10.96.0.0/16 dev eth1 src ${HOST_IP}
+
+mkdir -p $HOME/.kube
+sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
+sudo chown $(id -u):$(id -g) $HOME/.kube/config
+
+kubectl taint nodes --all node-role.kubernetes.io/master-
+
+kubectl create -f https://docs.projectcalico.org/manifests/tigera-operator.yaml
+kubectl create -f https://docs.projectcalico.org/manifests/custom-resources.yaml
+
+
+echo
+echo "### COMMAND TO ADD A WORKER NODE ###"
+kubeadm token create --print-join-command --ttl 0
+
+SCRIPT
+
+Vagrant.configure("2") do |config|
+  config.vm.box = BOX_IMAGE
+  config.vm.box_check_update = false
+
+  config.vm.provider "virtualbox" do |l|
+    l.cpus = 2
+    l.memory = "4096"
+  end
+
+  config.vm.provision :shell, :path => "install-master.sh"
+
+  config.hostmanager.enabled = true
+  config.hostmanager.manage_guest = true
+  # config.vm.network "public_network"
+
+  if SETUP_MASTER
+    config.vm.define "master" do |subconfig|
+      subconfig.vm.hostname = "master"
+      subconfig.vm.network :private_network, ip: MASTER_IP
+      subconfig.vm.provider :virtualbox do |vb|
+        vb.customize ["modifyvm", :id, "--cpus", "2"]
+        vb.customize ["modifyvm", :id, "--memory", "4096"]
+      end
+      subconfig.vm.provision :shell, inline: $kubemasterscript
+    end
+  end
+end  

Master/install-master.sh

@@ -0,0 +1,65 @@
+#!/bin/sh
+# Use this script to setup any node in your Kuberntes cluster 
+# Either master or worker
+# Source: http://kubernetes.io/docs/getting-started-guides/kubeadm/
+
+### setup terminal
+KUBE_VERSION=1.21.1
+### Setting up background to operate Kubernetes
+echo 'colorscheme ron' >> ~/.vimrc
+echo 'set tabstop=2' >> ~/.vimrc
+echo 'set shiftwidth=2' >> ~/.vimrc
+echo 'set expandtab' >> ~/.vimrc
+echo 'source <(kubectl completion bash)' >> ~/.bashrc
+echo 'alias k=kubectl' >> ~/.bashrc
+echo 'alias c=clear' >> ~/.bashrc
+echo 'complete -F __start_kubectl k' >> ~/.bashrc
+sed -i '1s/^/force_color_prompt=yes\n/' ~/.bashrc
+
+#Turn off Swap
+sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
+swapoff -a
+
+rm -rf ~/.kube /etc/cni/net.d /etc/kubernetes /var/lib/etcd /var/lib/kubelet /var/run/kubernetes /var/lib/cni /opt/cni
+iptables -F
+
+apt-get update 
+apt-get install wget apt-transport-https gnupg lsb-release -y
+
+curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
+cat <<EOF > /etc/apt/sources.list.d/kubernetes.list
+deb http://apt.kubernetes.io/ kubernetes-xenial main
+EOF
+
+### install k8s and docker
+apt-get remove -y docker.io kubelet kubeadm kubectl kubernetes-cni docker-ce
+apt-get autoremove -y
+systemctl daemon-reload
+
+apt-get update -y
+apt-get -y install linux-headers-$(uname -r)
+apt-get install -y etcd-client vim build-essential bash-completion binutils apparmor-utils docker.io kubelet=${KUBE_VERSION}-00 kubeadm=${KUBE_VERSION}-00 kubectl=${KUBE_VERSION}-00 kubernetes-cni=0.8.7-00 
+
+cat > /etc/docker/daemon.json <<EOF
+{
+  "exec-opts": ["native.cgroupdriver=systemd"],
+  "log-driver": "json-file",
+  "storage-driver": "overlay2"
+}
+EOF
+mkdir -p /etc/systemd/system/docker.service.d
+
+# Restart docker.
+systemctl daemon-reload
+systemctl restart docker
+
+# start docker on reboot
+systemctl enable docker
+
+docker info | grep -i "storage"
+docker info | grep -i "cgroup"
+
+systemctl enable kubelet && systemctl start kubelet
+
+#Pull images
+kubeadm config images pull

README.md

@@ -1,17 +1,18 @@
-# kubeadm-vagrant
-Setup Kubernetes Cluster with Kubeadm and Vagrant
+# Setup Kubernetes Cluster with Kubeadm and Vagrant
 
-Introduction
+## Introduction
 
 With reference to steps listed at [Using kubeadm to Create a Cluster](https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/) for setting up the Kubernetes cluster with kubeadm. I have been working on an automation to setup the cluster. The result of it is [kubeadm-vagrant](https://github.com/coolsvap/kubeadm-vagrant), a github project with simple steps to setup your kubernetes cluster with more control on vagrant based virtual machines.
 
-Installation
+### Installation
+- Download and install [Vagrant](https://www.vagrantup.com/) specific to your OS 
 
-- Clone the kubeadm-vagrant repo
+- Clone the [kubeadm-vagrant](https://github.com/coolsvap/kubeadm-vagrant) repo
 
-```git clone https://github.com/coolsvap/kubeadm-vagrant ```
+``` git clone https://github.com/coolsvap/kubeadm-vagrant ```
+
+- For setting up Master/Worker nodes move to specific directories.
 
-- Choose your distribution of choice from CentOS/Ubuntu and move to the specific directory.
 - Configure the cluster parameters in Vagrantfile. Refer below for details of configuration options.
 
 ``` vi Vagrantfile ```
@@ -23,24 +24,15 @@ Installation
 - This will spin up new Kubernetes cluster. You can check the status of cluster with following command,
 
 ```
-sudo su
+vagrant ssh
 kubectl get pods --all-namespaces
-
 ```
 Cluster Configuration Options
 
-1. You need to generate a KUBETOKEN of your choice to be used while creating the cluster. You will need to install kubeadm package on your host to create the token with following command
-
-```
-# kubeadm token generate 
-148a37.736fd53655b767b7
-
-```
-1. ``` BOX_IMAGE ``` is currently default with "coolsvap/centos-k8s" box which is custom box created which can be used for setting up the cluster with basic dependencies for kubernetes node.
+1. ``` BOX_IMAGE ``` is currently default with "generic/ubuntu1804" box which is custom box created which can be used for setting up the cluster with basic dependencies for kubernetes node.
 2. Set ``` SETUP_MASTER ``` to true if you want to setup the node. This is true by default for spawning a new cluster. You can skip it for adding new minions.
 3. Set ``` SETUP_NODES ``` to true/false depending on whether you are setting up minions in the cluster.
 4. Specify ``` NODE_COUNT ``` as the count of minions in the cluster
 5. Specify  the ``` MASTER_IP ``` as static IP which can be referenced for other cluster configurations
 6. Specify ``` NODE_IP_NW ``` as the network IP which can be used for assigning dynamic IPs for cluster nodes from the same network as Master
 7. Specify custom ``` POD_NW_CIDR ``` of your choice
-8. Setting up kubernetes dashboard is still a WIP with ``` K8S_DASHBOARD ``` option.