k3s安装

快来打我* 2022-10-24 13:11 138阅读 0赞

k3s是k8简化版，轻量好用

机器                ip                      配置            说明  
k3s                 172.21.0.100     2CPU/4G    入口节点，包括mysql/nginx/ui  
k3s-master-1    172.21.0.101    1CPU/2G    主节点  
k3s-master-2    172.21.0.102    1CPU/2G    主节点  
k3s-agent-1    172.21.0.201      1CPU/2G    从节点  
k3s-agent-2    172.21.0.202      1CPU/2G    从节点

\#配置hosts  
vi /etc/hosts

172.21.0.100    k3s  
172.21.0.101    k3s-master-1  
172.21.0.102    k3s-master-2  
172.21.0.201    k3s-agent-1  
172.21.0.202    k3s-agent-2

172.21.0.100 安装mysql，并创建数据库，名称随意这里叫 k3s

首先安装docker，可参考：[https://blog.csdn.net/kang5789/article/details/72473882][https_blog.csdn.net_kang5789_article_details_72473882]

\# 安装两台主节点

export INSTALL_K3S_VERSION=v1.18.9+k3s1
    
    export INSTALL_K3S_EXEC="--datastore-endpoint=mysql://root:123456@tcp(172.21.0.100:3306)/k3s --docker --no-deploy traefik --node-external-ip 172.21.0.111 --tls-san 172.21.0.111 --kube-apiserver-arg service-node-port-range=1-65000 --write-kubeconfig  ~/.kube/config --write-kubeconfig-mode 666"
    
    curl -sfL http://rancher-mirror.cnrancher.com/k3s/k3s-install.sh | INSTALL_K3S_MIRROR=cn sh -

安装完成执行， cat /var/lib/rancher/k3s/server/node-token  两台主节点的token一致表示成功

curl -O http://nginx.org/download/nginx-1.20.1.tar.gz

./configure --with-http\_ssl\_module --with-stream --prefix=/usr/local/nginx

make & make install

\# 配置nginx四层代理，代理两个主节点6443端口

vi /etc/nginx/nginx.conf

stream {
        upstream k3sList {
           server 172.21.0.101:6443;
           server 172.21.0.102:6443;
        }
        server {
            listen 6443;
            proxy_connect_timeout 1s;
            proxy_timeout 3s;
            proxy_pass k3sList;
        }
    }

\#安装两台从节点

export INSTALL_K3S_VERSION=v1.18.9+k3s1
    
    export K3S_TOKEN=K10fdf51c8fbc2b5165c65f73fcb9995fed487a2b838c8fa65dbd0116e453d3217e::server:2eec8ee6aaad2ab13ee500337f2449ee
    
    export K3S_URL=https://172.21.0.100:6443
    
    export INSTALL_K3S_EXEC="--docker --kube-apiserver-arg service-node-port-range=1-65000 --no-deploy traefik --node-external-ip 172.21.0.113 --tls-san 172.21.0.113 --write-kubeconfig  ~/.kube/config --write-kubeconfig-mode 666"
    
    curl -sfL http://rancher-mirror.cnrancher.com/k3s/k3s-install.sh | INSTALL_K3S_MIRROR=cn sh -

\#测试

kubectl get nodes

发现如下信息证明安装成功

NAME           STATUS   ROLES    AGE     VERSION  
k3s-master-1   Ready    master   145m    v1.18.9+k3s1  
k3s-agent-1    Ready    <none>   3m42s   v1.18.9+k3s1

k3s-agent-2    Ready    <none>   3m41s   v1.18.9+k3s1  
k3s-master-2   Ready    master   141m    v1.18.9+k3s1

在172.21.0.100安装UI

docker run --privileged -d -v /opt/rancher:/var/lib/rancher:rw --restart=unless-stopped -p 9443:443 rancher/rancher:stable

访问：[https://172.21.0.100:9443][https_172.21.0.100_9443]

ok，大功告成！

卸载  
\# 要从 server 节点卸载 K3s，请运行：  
/usr/local/bin/k3s-uninstall.sh

\# 要从 agent 节点卸载 K3s，请运行：  
/usr/local/bin/k3s-agent-uninstall.sh

[https_blog.csdn.net_kang5789_article_details_72473882]: https://blog.csdn.net/kang5789/article/details/72473882
[https_172.21.0.100_9443]: https://172.21.0.100:9443/update-password