nginx - capistrano 在部署项目时出现"sorry, you must have a tty to run sudo“怎么处理呢?

Question

capistrano　部属一项目，当执行到”sudo xx/xx/xx/nginx -s reload“　时出现”sorry, you must have a tty to run sudo“这个问题说明什么呢？
ps:
操作系统是centos 5 我也在网上找到一些方法，例如：
http://blog.csdn.net/chinalinuxzend/a...
http://www-01.ibm.com/support/docview...
也照做了。但是没有起作用，反而在部属的时候要我输入：Password:　。有类似的情况吗？

Answer 1

vim /etc/sudoers

• Disable "ssh hostname sudo <cmd>", because it will show the password in clear.
• Defaults requiretty #Comment out this line

In addition, I remember that your capistrano also requires a deployment password.
set :password, "user1" #Password to log in to the deployment machine. If there is no deployment, you need to enter the password