假如就放在/root下
wget https://github.com/certbot/certbot/archive/master.zip
unzip master.zip
cd certbot-master/
./certbot-auto --help
./certbot-auto certonly --webroot --agree-tos -v -t --email loonghere@qq.com -w /var/www -d www.aaa.com
如果报错，再执行一遍
然后生成的证书在/etc/letsencrypt/live/下
编辑nginx配置文件
server {
listen 443;
server_name www.aaa.com;
ssl on;
root /var/www;
index index.html index.php;
ssl_certificate "/etc/letsencrypt/live/www.aaa.com/fullchain.pem";
ssl_certificate_key "/etc/letsencrypt/live/www.aaa.com/privkey.pem";
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 10m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
ssl_prefer_server_ciphers on;
location / {
try_files $uri $uri/ /index.php$is_args$query_string;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}
server {
server_name www.aaa.com;
location / {
rewrite (.*) https://www.aaa.com$1 permanent;
}
}
service nginx reload
即可完成SSL的配置，有效期3个月，快到期会自动往上面的邮箱发邮件，后台renew续期即可
/root/certbot-master/certbot-auto renew
完成续期
加入定时任务，设置了每周一凌晨4点30自动更新证书，并自动重启nginx服务，证书在到期前30天内才能更新，多余的更新会自动忽略掉的，每周更新还有一个好处是更新可能会失败，这样最多还有4次的尝试机会来保证不会过期.
创建脚本 renew-cert.sh
#!/bin/bash
/root/certbot-master/certbot-auto renew
/sbin/service nginx reload
保存脚本，并给予可执行权限
chmod a+x renew-cert.sh
写入定时任务 crontab -e
30 4 * * 1 /root/renew-cert.sh >> /root/renew-cert.log 2>&1
保存并重启crontd
service crond restart
完成自动更新证书
