kuberntes -node kubeadm 1.14.1的shell脚本（2）

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本文详细介绍了如何在CentOS7环境下从零开始部署Kubernetes1.14.1集群，包括环境配置、内核参数调整、Docker与Kubernetes组件的安装、镜像下载及标签化等关键步骤。

IP:CentOS7
备注，脚本中涉及的IP ,hosts,要根据实际情况修改，请勿直接用，会报错。。如果有疑问请留言，或者私信。互相交流学习。
#!/bin/bash
#author shadow2017
#kubernetes 1.14.1
yum install vim wget net-tools lrzsz -y
#1：配置环境：
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
iptables -F
iptables -t nat -F
iptables -I FORWARD -s 0.0.0.0/0 -d 0.0.0.0/0 -j ACCEPT
yum -y install ntp
ntpdate pool.ntp.org
systemctl start ntpd
systemctl enable ntpd
systmctl stop firewalld.serice iptables.service
systemctl disable firewalld.service
systemctl disable iptable.service
#2:配置hosts 解析
cat > /etc/hosts <<EOF
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.137 k8s-test
EOF
#3：配置内核参数：
cat > /etc/sysctl.conf <<EOF
net.ipv4.ip_forward=1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-arptables = 1
vm.swappiness=0
EOF
#4：关闭selinux
echo -n “正在关闭SELinux……”
setenforce 0 > /dev/null 2>&1
sed -i ‘/^SELINUX=/s/=.*/=disabled/’ /etc/selinux/config
if [ $KaTeX parse error: Expected 'EOF', got '#' at position 51: \dotsinux初始化完毕！" fi #̲setenforce 0 #s\dots$ /SELINUX=disabled/’ /etc/selinux/config
cat /etc/selinux/config
#5：保存修改内核参数生效
sysctl -p
#6:配置kubernetes

echo -n “正在配置kubernetes.repo”
cat > /etc/yum.repos.d/kubernetes.repo <<EOF
[kubernetes]
name=Kubernetes Repo
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
enabled=1
EOF
if [ $? -eq 0 ];then
echo -n “kubernetes配置完毕！”
fi
#7、安装Docker
echo -n “正在安装docker…!”
wget -P /etc/yum.repos.d https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum list docker-ce --showduplicates | sort -r
yum install docker-ce -y
#8:启动docker并设置开机启动
systemctl start docker
systemctl enable docker
systemctl status docker
if [ $? -eq 0 ];then
echo -n “docker安装配置完毕！”
fi
#9:执行下面命令配置加速器：
echo -n “配置加速器…”
curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://f1361db2.m.daocloud.io
systemctl restart docker
#10:安装kubeadm和kubelet
#备注：
#可以指定型号安装：

echo -n “安装kubeadm,kubelet,kubectl…!”
yum install -y kubelet-1.14.1 kubernetes-cni-0.6.0-0.x86_64 kubeadm-1.14.1 kubectl-1.14.1 --disableexcludes=kubernetes &&
systemctl enable --now kubelet &&
systemctl start kubelet &&
systemctl status kubelet
#11:设置开机启动kubelet
systemctl daemon-reload &&
systemctl start kubelet &&
systemctl enable kubelet &&
systemctl status kubelet
if [ $? -eq 0 ];then
echo -n “kubeadm,kubelet,kubectl haved install
！”
fi

#12:此时查看下面两个文件的值是否为1
cat /proc/sys/net/bridge/bridge-nf-call-ip6tables
cat /proc/sys/net/bridge/bridge-nf-call-ip6tables

#master节点所需要的全部镜像如下：
echo -n “Downloading the kubernetes_node image…”

docker pull mirrorgooglecontainers/etcd:3.3.10 &&
docker pull willdockerhub/coredns:1.3.1 &&
docker pull mirrorgooglecontainers/kube-proxy:v1.14.1 &&
docker pull mirrorgooglecontainers/pause:3.1

#15：给镜像打上标签：
echo -n “Labeling kubernetes mirror…!”
docker tag mirrorgooglecontainers/kube-proxy:v1.14.1 k8s.gcr.io/kube-proxy:v1.14.1
docker tag mirrorgooglecontainers/pause:3.1 k8s.gcr.io/pause:3.1
docker tag mirrorgooglecontainers/etcd:3.3.10 k8s.gcr.io/etcd:3.3.10
docker tag willdockerhub/coredns:1.3.1 k8s.gcr.io/coredns:1.3.1
if [ $? -eq 0 ];then
echo -n “Preparations for the mirror work have been completed!”
fi