yum离线安装kubernetes集群

[apersonw]

一、安装kubelet kubeadm kubectl

 #在能联网的服务器上
#1、安装yumdownloader
yum install yum-utils -y
设置yum源
curl -o /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
       http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

yum clean all && yum makecache

2、获取k8s安装包及依赖,也可以使用命令repotrack下载所有的rpm包

mkdir /tmp/k8s
yumdownloader --resolve --destdir /tmp/k8s libxml2-python.x86_64 0:2.9.1-6.el7.5 python-chardet.noarch 0:2.2.1-3.el7 python-kitchen.noarch 0:1.1.1-5.el7 libxml2.x86_64 0:2.9.1-6.el7.5
yumdownloader --resolve --destdir /tmp/k8s kubelet-1.19.4 kubeadm-1.19.4 kubectl-1.19.4 --disableexcludes=kubernetes
yumdownloader --resolve --destdir /tmp/k8s createrepo
tar zcf k8s.tar.gz /tmp/k8s

#注：也可使用repotrack下载离线rpm

3、将k8s.tar.gz上传到离线服务器上/tmp目录下

#在离线服务器上
#1、解压压缩包
tar zxf /tmp/k8s.tar.gz

#2、制作离线源
cd /tmp/k8s
#若是libxml2冲突，则使用更新命令rpm -Uvh
rpm -Uvh libxml2-2.9.1-6.el7.5.x86_64.rpm
rpm -ivh libxml2-python-2.9.1-6.el7.5.x86_64.rpm
rpm -ivh deltarpm-3.6-3.el7.x86_64.rpm
rpm -ivh python-deltarpm-3.6-3.el7.x86_64.rpm
rpm -ivh createrepo-0.9.9-28.el7.noarch.rpm

rpm -ivh libnetfilter_cthelper-1.0.0-11.el7.x86_64.rpm
rpm -ivh libnetfilter_cttimeout-1.0.0-7.el7.x86_64.rpm
rpm -ivh libnetfilter_queue-1.0.2-2.el7_2.x86_64.rpm
rpm -ivh conntrack-tools-1.4.4-7.el7.x86_64.rpm
cd /tmp
createrepo k8s

#tip：更新仓库命令
createrepo -v --update k8s

关闭swap
swapoff -a
# 防止开机自动挂载 swap 分区
sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
#3、编辑yum文件
vi /etc/yum.repos.d/k8s.repo
[k8s]
name=k8s
baseurl=file:///tmp/k8s
gpgcheck=0
enabled=1
#4、安装k8s,禁用CentOS基本仓库
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes

二、安装Master

# 只在 master 节点执行
# 替换 x.x.x.x 为 master 节点的内网IP
# export 命令只在当前 shell 会话中有效，开启新的 shell 窗口后，如果要继续安装过程，请重新执行此处的 export 命令
export MASTER_IP=10.253.144.192
# 替换 apiserver.demo 为 您想要的 dnsName
export APISERVER_NAME=k8s-master1.host
# Kubernetes 容器组所在的网段，该网段安装完成后，由 kubernetes 创建，事先并不存在于您的物理网络中
export POD_SUBNET=10.100.0.1/16
echo "${MASTER_IP}    ${APISERVER_NAME}" >> /etc/hosts


cat <<EOF > ./kubeadm-config.yaml
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: v1.19.4
imageRepository: registry.aliyuncs.com/k8sxio
controlPlaneEndpoint: "${APISERVER_NAME}:6443"
networking:
  serviceSubnet: "10.96.0.0/16"
  podSubnet: "${POD_SUBNET}"
  dnsDomain: "cluster.local"
EOF

三、加入Master

kubeadm join k8s-master1.host:6443 --token r96ug5.p4seuoqxj9xlu46y
--discovery-token-ca-cert-hash sha256:430454b1fc3da4d4ad01b13e9b9d8a7bf2a1eb85da4b431e3fd0cf1672178357
--control-plane --certificate-key d017dd100df9e187ccf3ee48f9950e59e41bfd55570a3ce12de2afef1fea84cb

四、加入Node

# 只在 master 节点执行,获得 join命令参数
kubeadm token create --print-join-command

# 修改 hostname
hostnamectl set-hostname k8s-worker1.host

# 设置 hostname 解析
echo "127.0.0.1   $(hostname)" >> /etc/hosts

# 只在 worker 节点执行
# 替换 x.x.x.x 为 master 节点的内网 IP
export MASTER_IP=10.253.144.192
# 替换 apiserver.demo 为初始化 master 节点时所使用的 APISERVER_NAME
export APISERVER_NAME=k8s-master1.host
echo "${MASTER_IP}    ${APISERVER_NAME}" >> /etc/hosts
#启动kubelet服务
systemctl enable kubelet.service

# 只在 master 节点执行,获得 join命令参数,获取到下面的join命令
kubeadm token create --print-join-command
kubeadm join