没有在 AWS OpsWorks 中部署 Rails 应用程序。完全困惑如何做到这一点！谁能告诉我部署一个 RoR 应用程序需要多少个实例？
我已经创建了“Rails App Server”实例，它看起来不错。在这里，我使用 nginx 和 Unicorn 作为 Rails Stack。
之后，我从 git repo 添加了一个应用程序。然后部署该应用程序。并显示它已成功部署的日志。
但在公共 IP 中它正在显示404 Not Found Error - nginx！
任何帮助都是不言而喻的。
I had this issue, and it turned out that the default virtual host /etc/nginx/sites-enabled/000-default symbolic link was not getting removed during deployment.
The 404 was actually nginx looking for a public root of whatever was in the default virtual host, as seen in /var/logs/nginx/error.log
2015/12/23 21:46:05 [error] 3839#0: *15 "/var/www/nginx-default/index.html" is not found (2: No such file or directory), client: 127.0.0.1, server: rails-app1, request: "GET / HTTP/1.1", host: "localhost"
Worse, it comes back after every OpsWorks deployment. Removing that link fixed the problem for me.
To make the fix sustainable and automated, I added a custom recipe to the Deploy lifecycle event for the Rails App Server layer, called custom-cookbook::delete-default-site. The recipe looks like this:
file '/etc/nginx/sites-enabled/000-default' do
action :delete
end
service 'nginx' do
action :reload
end
检查独角兽及其日志文件的进程列表。如果 unicorn 主进程未启动，部署不会因某种原因失败。