changes to setup guide

setup-container.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+# script that runs 
+# https://kubernetes.io/docs/setup/production-environment/container-runtime
+
+# setting MYOS variable
+MYOS=$(hostnamectl | awk '/Operating/ { print $3 }')
+OSVERSION=$(hostnamectl | awk '/Operating/ { print $4 }')
+
+##### CentOS 7 config
+if [ $MYOS = "centos" ]
+then
+	echo setting up CentOS 7 with Docker 
+	yum install -y vim yum-utils device-mapper-persistent-data lvm2
+	yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
+
+	# notice that only verified versions of Docker may be installed
+	# verify the documentation to check if a more recent version is available
+
+	yum install -y docker-ce
+	[ ! -d /etc/docker ] && mkdir /etc/docker
+
+	mkdir -p /etc/systemd/system/docker.service.d
+
+
+	cat > /etc/docker/daemon.json <<- EOF
+	{
+	  "exec-opts": ["native.cgroupdriver=systemd"],
+	  "log-driver": "json-file",
+	  "log-opts": {
+	    "max-size": "100m"
+	  },
+	  "storage-driver": "overlay2",
+	  "storage-opts": [
+	    "overlay2.override_kernel_check=true"
+	  ]
+	}
+	EOF
+
+
+	systemctl daemon-reload
+	systemctl restart docker
+	systemctl enable docker
+
+	systemctl disable --now firewalld
+fi
+
+echo printing MYOS $MYOS
+
+if [ $MYOS = "Ubuntu" ]
+then
+	### setting up container runtime prereq
+	cat <<- EOF | sudo tee /etc/modules-load.d/containerd.conf
+	overlay
+	br_netfilter
+	EOF
+
+	sudo modprobe overlay
+	sudo modprobe br_netfilter
+
+	# Setup required sysctl params, these persist across reboots.
+	cat <<- EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
+	net.bridge.bridge-nf-call-iptables  = 1
+	net.ipv4.ip_forward                 = 1
+	net.bridge.bridge-nf-call-ip6tables = 1
+	EOF
+
+	# Apply sysctl params without reboot
+	sudo sysctl --system
+
+	# (Install containerd)
+	sudo apt-get update && sudo apt-get install -y containerd
+	# Configure containerd
+	sudo mkdir -p /etc/containerd
+	containerd config default | sudo tee /etc/containerd/config.toml
+	# Restart containerd
+	sudo systemctl restart containerd	
+fi
+

setup-cri.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+# script that runs 
+# https://kubernetes.io/docs/setup/production-environment/container-runtime
+
+yum install -y vim yum-utils device-mapper-persistent-data lvm2
+yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
+
+# notice that only verified versions of Docker may be installed
+# verify the documentation to check if a more recent version is available
+
+yum install -y docker-ce
+[ ! -d /etc/docker ] && mkdir /etc/docker
+
+cat > /etc/docker/daemon.json <<EOF
+{
+  "exec-opts": ["native.cgroupdriver=systemd"],
+  "log-driver": "json-file",
+  "log-opts": {
+    "max-size": "100m"
+  },
+  "storage-driver": "overlay2",
+  "storage-opts": [
+    "overlay2.override_kernel_check=true"
+  ]
+}
+EOF
+
+mkdir -p /etc/systemd/system/docker.service.d
+
+systemctl daemon-reload
+systemctl restart docker
+systemctl enable docker
+
+systemctl disable --now firewalld

setup-kubtools-ubuntu.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
+br_netfilter
+EOF
+
+cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
+net.bridge.bridge-nf-call-ip6tables = 1
+net.bridge.bridge-nf-call-iptables = 1
+EOF
+sudo sysctl --system
+
+sudo apt-get update && sudo apt-get install -y apt-transport-https curl
+curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
+cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
+deb https://apt.kubernetes.io/ kubernetes-xenial main
+EOF
+sudo apt-get update
+sudo apt-get install -y kubelet kubeadm kubectl
+sudo apt-mark hold kubelet kubeadm kubectl
+
+