Let’s Encrypt 最近给域名安装免费的https证书 Let’s Encrypt，发现跟之前的安装方式不太一样，这里记录一下安装过程 https://certbot.eff.org/instructions?ws=nginx&os=centosrhel7https://eff-certbot.readthedocs.io/en/latest/using.html#nginxhtt

参考：Install snapd on CentOS using the Snap Store | Snapcraft sudo yum install epel-releasesudo yum install snapd