k8s-ubuntu.sh

#!/bin/bash

sudo apt -y install curl apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

sudo apt update

sudo apt -y install vim git curl wget kubelet kubeadm
sudo apt-mark hold kubelet kubeadm

# Disabel swap
sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
sudo swapoff -a

# Enable kernel modules
sudo modprobe overlay
sudo modprobe br_netfilter

# Add some settings to sysctl
sudo tee /etc/sysctl.d/kubernetes.conf<<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF

# Reload sysctl
sudo sysctl --system


# Install containerd
# Configure persistent loading of modules
sudo tee /etc/modules-load.d/containerd.conf <<EOF
overlay
br_netfilter
EOF

# Load at runtime
sudo modprobe overlay
sudo modprobe br_netfilter

# Ensure sysctl params are set
sudo tee /etc/sysctl.d/kubernetes.conf<<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF

# Reload configs
sudo sysctl --system

# Install required packages
sudo apt install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates

# Install containerd
sudo apt update
sudo apt install -y containerd.io

# Configure containerd and start service

sudo mkdir -p /etc/containerd
containerd config default | tee /etc/containerd/config.toml

# restart containerd
sudo systemctl restart containerd
sudo systemctl disable containerd



# Pull imagens
sudo kubeadm config images pull --cri-socket /run/containerd/containerd.sock

# Flanneld needs to be available in all nodes
wget https://github.com/flannel-io/flannel/releases/download/v0.17.0/flanneld-amd64 -O /tmp/flanneld-amd64
sudo mv /tmp/flanneld-amd64 /usr/bin/flanneld

echo 'sudo kubeadm init \--pod-network-cidr=10.244.0.0/16'
echo 'agr, bora pro flannel, pronto?'


echo 'agr bora por a instalacao'
echo 'kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml'