kubeless/deploy/kubernetes_install.sh

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#!/bin/bash
# Setting all parameters
NODE_TYPE=$1
INTERNAL=!$2
MASTER_IP=$3
## Parameters for master node installation
if [ "$NODE_TYPE" == "master" ]
then
if [ "$#" -lt 4 ]; then
POD_NETWORK_ARG=""
else
POD_NETWORK_ARG="--pod-network-cidr=$4"
fi
# Parameters for worker node installation
elif [ "$NODE_TYPE" == "worker" ]
then
TOKEN=$4
HASH=$5
fi
#Installing Docker
DOCKER_INSTALLED=$(which docker)
if [ "$DOCKER_INSTALLED" = "" ]
then
apt-get remove docker docker-engine docker.io
apt-get update
apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
apt-get update
apt-get install -y docker-ce
fi
#Installing Kubernetes
KUBERNETES_INSTALLED=$(which kubeadm)
if [ "$KUBERNETES_INSTALLED" = "" ]
then
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
touch /etc/apt/sources.list.d/kubernetes.list
chmod 666 /etc/apt/sources.list.d/kubernetes.list
echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list
apt-get update
apt-get install -y kubelet kubeadm kubectl kubernetes-cni
fi
#Disabling swap for Kubernetes
sysctl net.bridge.bridge-nf-call-iptables=1 > /dev/null
swapoff -a
# Initialize Kubernetes as Master node
if [ "$NODE_TYPE" == "master" ]
then
## Set master node for internal network
if [ $INTERNAL ]; then
touch /etc/default/kubelet
echo "KUBELET_EXTRA_ARGS=--node-ip=$MASTER_IP" > /etc/default/kubelet
fi
## Init Kubernetes
kubeadm init --ignore-preflight-errors=SystemVerification \
--apiserver-advertise-address=$MASTER_IP $POD_NETWORK_ARG
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config
echo "[master:$(hostname -s)] Node is up and running on $MASTER_IP"
# Initialize Kubernetes as Worker node
elif [ "$NODE_TYPE" = "worker" ]
then
## Set worker node for internal network
if [ $INTERNAL ]; then
IP=$(grep -oP \
'(?<=src )[^ ]*' \
<(grep -f <(ls -l /sys/class/net | grep pci | awk '{print $9}') \
<(ip ro sh) |
grep -v $(ip ro sh | grep default | awk '{print $5}')) |
head -1)
touch /etc/default/kubelet
echo "KUBELET_EXTRA_ARGS=--node-ip=$IP" > /etc/default/kubelet
else
IP=$(grep -oP '(?<=src )[^ ]*' <(ip ro sh | grep default))
fi
## Join to Kubernetes Master node
kubeadm join $MASTER_IP --token $TOKEN --discovery-token-ca-cert-hash $HASH \
--ignore-preflight-errors=SystemVerification
echo "[worker:$(hostname -s)] Client ($IP) joined to Master ($MASTER_IP)"
else
echo "Invalid argument"
fi