AWS Elastic Beanstalk Ruby on Rails 6 应用程序部署错误与 nginx

Question

I have deployed a Rails 6 app using the Elastic Beanstalk Ruby platform, and I'm getting a 502 when trying to access the app. The Nginx error logs have the following error...

connect() to unix:///var/run/puma/my_app.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: XXX.XX.XX.XX, server: _, request: "GET / HTTP/1.1", upstream: "http://unix:///var/run/puma/my_app.sock:/", host: "XXX.XX.XX.XX"

What could be the issue? An exceeded resource limit?

Answer 1

Check /var/log/puma/puma.log , you may find error message such as You have already activated puma 5.2.2, but your Gemfile requires puma 4.x . If this is the case, make sure your Gemfile and Gemfile.lock specify version of Puma that is available on the new Amazon Linux 2 based EB platform for Ruby.