checklist:

1. 安装 nginx、mysql、php71
2. scp /data0/ 文件、nginx 配置、https 配置、/home/ 文件

3. mysql 数据导入

   • 旧服务器上执行 mysqldump -uroot -p --all-databases > mysql.sql
   • scp 到新服务器
   • 新服务器登录 mysql 然后执行 source /path/to/mysql.sql
4. crontab 任务迁移

3143 版本好多注册码都不能用了
这个凑合用

ZYNGA INC.
50 User License
EA7E-811825
927BA117 84C9300F 4A0CCBC4 34A56B44
985E4562 59F2B63B CCCFF92F 0E646B83
0FD6487D 1507AE29 9CC4F9F5 0A6F32E3
0343D868 C18E2CD5 27641A71 25475648
309705B3 E468DDC4 1B766A18 7952D28C
E627DDBA 960A2153 69A2D98A C87C0607
45DC6049 8C04EC29 D18DFA40 442C680B
1342224D 44D90641 33A3B9F2 46AADB8F

阿里云服务器 Ubuntu 16.04 添加了 certbot 的源以后执行 apt update，会遇到报错，类似这样

W: The repository 'http://ppa.launchpad.net/certbot/certbot/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/certbot/certbot/ubuntu/dists/xenial/main/binary-amd64/Packages 502 Bad Gateway [IP: 140.205.132.245 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

解决方案：
sudo vi /etc/apt/apt.conf
注释其中的 Acquire::http::Proxy "http://mirrors.aliyun.com/"; 即可