安装k8s-1.18.9版本的脚本
下载之后最好修改
- KUBE_VERSION=“1.18.9” 以安装自己想要的版本
- MASTER1_IP= 自己的master IP
- NODE1_IP= 集群的节点IP
可以自定义修改， 但是也可以不动
- POD_NETWORK=“10.244.0.0/16”
- SERVICE_NETWORK=“10.96.0.0/16”
网络插件
- 这个脚本默认使用flannel
- 如果使用calico记得修改calico脚本里的pod network
github
wget https://raw.githubusercontent.com/Tweakzx/k8s-scripts/main/k8s-install.sh
# !/bin/bash
KUBE_VERSION="1.18.9"
KUBE_VERSION2=$(echo $KUBE_VERSION |awk -F. '{print $2}')
DOCKER_VERSION=""
MASTER1_IP=10.10.0.25
NODE1_IP=10.10.0.26
MASTER1=master
NODE1=node1
POD_NETWORK="10.244.0.0/16"
SERVICE_NETWORK="10.96.0.0/16"
. /etc/os-release
IMAGES_URL="registry.aliyuncs.com/google_containers"
CRI_DOCKER_VERSION=0.2.6
CRI_DOCKER_URL="https://ghproxy.com/https://github.com/Mirantis/cri-dockerd/releases/download/v${CRI_DOCKER_VERSION}/cri-dockerd_${CRI_DOCKER_VERSION}.3-0.ubuntu-${UBUNTU_CODENAME}_amd64.deb"
LOCAL_IP=`hostname -I |awk '{print $1}'`
COLOR_SUCCESS="echo -e \\033[1;32m"
COLOR_FAILURE="echo -e \\033[1;31m"
END="\033[m"
color () {
RES_COL=60
MOVE_TO_COL="echo -en \\033[${RES_COL}G"
RES_COL=50
SETCOLOR_SUCCESS="echo -en \\033[1;32m"
SETCOLOR_FAILURE="echo -en \\033[1;31m"
SETCOLOR_WARNING="echo -en \\033[1;33m"
SETCOLOR_NORMAL="echo -en \E[0m"
echo -n "$1" && $MOVE_TO_COL
echo -n "["
if [ $2 = "success" -o $2 = "0" ] ;then
${SETCOLOR_SUCCESS}
echo -n $"OK"
elif [ $2 = "failure" -o $2 = "1" ] ;then
${SETCOLOR_FAILURE}
echo -n $"FAILED"
else
${SETCOLOR_WARNING}
echo -n $"WARNING"
fi
${SETCOLOR_NORMAL}
echo -n "]"
echo
}
install_prepare () {
${COLOR_SUCCESS}"开始处理环境的基本配置..."${END}
cat > /etc/hosts <<EOF
127.0.0.1 localhost
$MASTER1_IP $MASTER1
$NODE1_IP $NODE1
EOF
hostnamectl set-hostname $(awk -v ip=$LOCAL_IP '{if($1==ip)print $2}' /etc/hosts)
swapoff -a
sed -i '/swap/s/^/#/' /etc/fstab
cat >/etc/modules-load.d/k8s.conf <<EOF
modprobe overlay
modprobe br_netfilter
EOF
cat >/etc/sysctl.d/k8s.conf <<EOF
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF
sysctl --system
color "安装前准备完成！" 0
sleep 1
}
install_docker () {
${COLOR_SUCCESS}"开始安装docker..."${END}
apt update
apt -y install docker.io || { color "安装Docker失败！" 1; exit 1; }
cat > /etc/docker/daemon.json << EOF
{
"registry-mirrors": [
"https://docker.mirrors.ustc.edu.cn",
"https://hub-mirror.c.163.com",
"https://reg-mirror.qiniu.com",
"https://registry.docker-cn.com"
],
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF
systemctl restart docker.service
docker info && { color "安装 Docker 成功" 0; sleep 1; } || { color "安装 Docker 失败！" 1; exit; }
}
install_kubeadm () {
${COLOR_SUCCESS}"kubeadm依赖安装..."${END}
apt-get update && apt-get install -y apt-transport-https curl
curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -
cat << EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://mirrorS.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF
apt-get update
apt-cache madison kubeadm | head
${COLOR_FAILURE}"5秒后即将安装： kubeadm-"${KUBE_VERSION}" 版本......"${END}
${COLOR_FAILURE}"如果想安装其它版，请桜 ctrl + c 键退出，修改版本再执行"${END}
sleep 6
#安装指定版本
apt install -y kubeadm=${KUBE_VERSION}-00 kubelet=${KUBE_VERSION}-00 kubectl=${KUBE_VERSION}-00
[ $? -eq 0 ] && { color "安装 kubeadm 成功！" 0; sleep 1;} || { color "安装 kubeadm 失败！" 1; exit 2; }
}
# Kubernetes -v1.24之前版本无需安装 cri-dockerd
install_cri_dockerd () {
${COLOR_SUCCESS}"开始安装cri-dockerd..."${END}
[ $KUBE_VERSION2 -lt 24 ] && return
if [ ! -e cri-dockerd_${CRI_DOCKER_VERSION}.3-0.ubuntu-${UBUNTU_CODENAME}_amd64.deb ] ;then
curl -LO $CRI_DOCKER_URL || { color "下载cri-dockerd失败！" 1; exit 2; }
fi
dpkg -i cri-dockerd_${CRI_DOCKER_VERSION}.3-0.ubuntu-${UBUNTU_CODENAME}_amd64.deb
sed -i -e 's#ExecStart=.*#ExecStart=/usr/bin/cri-dockerd --container-runtime-endpoint fd:// --network-plugin=cni --pod-infra-container-image='"$IMAGES_URL"'/pause:3.7#g' /lib/systemd/system/cri-docker.service
systemctl daemon-reload
systemctl restart cri-docker.service
}
kubernetes_init () {
${COLOR_SUCCESS}"开始初始化k8s..."${END}
kubeadm init \
--kubernetes-version=v${KUBE_VERSION} \
--apiserver-advertise-address=$(MASTER1_IP) \
--image-repository registry.aliyuncs.com/google_containers \
--service-cidr=${SERVICE_NETWORK} \
--pod-network-cidr=${POD_NETWORK} \
--v=5
if [ $? -eq 0 ]; then
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
color "初始化 k8s 成功！" 0
else
color "初始化 k8s 失败！" 1
fi
}
reset_kubernetes () {
#To do
kubeadm reset
rm -rf /etc/kubernetes/*
rm -rf $HOME/.kube/
}
configure_network () {
kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
}
remove_docker () {
apt-get autoremove docker docker-ce docker-engine docker.io containerd runc
dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P
rm -rf /etc/systemd/system/docker.service.d
rm -rf /var/lib/docker
}
install_helm () {
wget https://mirrors.huaweicloud.com/helm/v3.1.1/helm-v3.1.1-linux-amd64.tar.gz
tar -zxvf helm-v3.1.1-linux-amd64.tar.gz
mv linux-amd64/helm /usr/local/bin/helm
}
remove_kubernetes () {
#To do
apt remove -y kubeadm kubectl kubelet
sudo rm -rf /etc/kubernetes /var/lib/kubernetes /var/lib/etcd /var/lib/kubelet /var/run/kubernetes ~/.kube
sudo ip link delete cni0
sudo ip link delete flannel.1
}
main () {
PS3="请选择编号（1-8）"
options=("初始化kubernetes集群" "加入kubernetes集群" "退出kubernetes集群" "配置网络" "安装helm" "删除kubernetes" "删除docker" "退出本程序")
select item in "${options[@]}"; do
case $item in
"初始化kubernetes集群")
install_prepare
install_docker
install_kubeadm
install_cri_dockerd
kubernetes_init
break
;;
"加入kubernetes集群")
install_prepare
install_docker
install_kubeadm
install_cri_dockerd
${COLOR_SUCCESS}"加入kubernetes前的准备工作已完成，请执行kubeadm join命令！"${END}
break
;;
"退出kubernetes集群")
reset_kubernetes
break
;;
"配置网络")
configure_network
break
;;
"安装helm")
install_helm
break
;;
"删除kubernetes")
reset_kubernetes
remove_kubernetes
break
;;
"删除docker")
remove_docker
break
;;
"退出本程序")
exit
;;
*) echo "invalid option $REPLY";;
esac
done
}
main
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