linux 环境下用rancher安装k8s集群

准备环境：

3台机器

一、环境初始化

1）修改 /etc/sysctl.conf

将桥接的IPv4流量传递到iptables的链

cat > /etc/sysctl.conf << EFO
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EFO

生效

sysctl -p /etc/sysctl.conf

2）关闭防火墙  关闭selinux  关闭swap

systemctl stop firewalld && systemctl disable firewalld  
sed -i 's/enforcing/disabled/' /etc/selinux/config && setenforce 0 
swapoff -a && sed -ri 's/.*swap.*/#&/' /etc/fstab

3) 时间同步

yum install ntpdate -y
ntpdate ntp1.aliyun.com

date -R     #查看新时间是否已同步

4）重启

reboot       #注意确定好环境哈

　　

二、先为所有机器安装好docker

1、移除以前docker相关包

sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

2、配置yum源

sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

3、安装docker

sudo yum install -y docker-ce docker-ce-cli containerd.io


#以下是在安装k8s的时候使用
yum install -y docker-ce-20.10.8 docker-ce-cli-20.10.8  containerd.io-1.4.10

4、启动并配置加速

systemctl enable docker --now


sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://82m9ar63.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

　

三、部署rancher

 

docker run -d --name=rancher --restart=unless-stopped \
    -p 80:80 -p 443:443 \
    --privileged \
    -v /home/rancher:/var/lib/rancher \
    rancher/rancher:latest 

 

　　

 

 

 

参考链接：

https://zhuanlan.zhihu.com/p/403539342

https://blog.csdn.net/l2931050/article/details/124110605

https://blog.csdn.net/weixin_60092693/article/details/121665901

 https://blog.csdn.net/weixin_41636021/article/details/127976712