74 lines
2.0 KiB
Bash
74 lines
2.0 KiB
Bash
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#!/bin/bash
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################
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### Settings ###
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################
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set -x
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DEBIAN_FRONTEND=noninteractive
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KEYRING_PATH="/usr/share/keyrings/kubernetes-archive-keyring.gpg"
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KEYRING_URL="https://packages.cloud.google.com/apt/doc/apt-key.gpg"
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#########################################################
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### Install containerd, kubeadm, kubelet, and kubectl ###
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#########################################################
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# Install prerequsite packages
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apt-get install -y apt-transport-https ca-certificates curl
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# Install Google Cloud public signing key
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curl -fsSLo "$KEYRING_PATH" "$KEYRING_URL"
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if [ ! -f /etc/sysctl.d/keepalived.conf ]; then
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cat <<- EOF | tee /etc/apt/sources.list.d/kubernetes.list
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deb [signed-by=${KEYRING_PATH}] https://apt.kubernetes.io/ kubernetes-xenial main
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EOF
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fi
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# Update package index and install
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apt-get update
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apt-get install -y containerd kubelet kubeadm kubectl
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apt-mark hold kubelet kubeadm kubectl
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# Forwarding IPv4 and letting iptables see bridged traffic
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if [ ! -f /etc/modules-load.d/k8s.conf ]; then
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cat <<- EOF | tee /etc/modules-load.d/k8s.conf
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overlay
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br_netfilter
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EOF
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modprobe overlay
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modprobe br_netfilter
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fi
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# sysctl params required by setup, params persist across reboots
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if [ ! -f /etc/sysctl.d/k8s.conf ]; then
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cat <<- EOF | tee /etc/sysctl.d/k8s.conf
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net.bridge.bridge-nf-call-iptables = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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net.ipv4.ip_forward = 1
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EOF
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sudo sysctl --system
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fi
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# Prevent further execution until floating IP is found (not a failure)
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if [ ! -f /vagrant/.k8s-ips ]; then
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echo "NOTICE: /vagrant/.k8s-ips not found"
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echo "NOTICE: Rerun 'vagrant provision' after running vagrant-ips.sh"
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exit 0
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fi
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##########################################
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### Install keepalived for floating IP ###
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##########################################
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apt-get update
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apt-get install -y keepalived
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if [ ! -f /etc/sysctl.d/keepalived.conf ]; then
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cat <<- EOF | tee /etc/sysctl.d/keepalived.conf
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net.ipv4.ip_nonlocal_bind = 1
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EOF
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sysctl -p
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fi
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