Agile Web Development with Rails 5.1

Iteration L3: Checking Up on a Deployed Application

Once we have our application deployed, we’ll no doubt need to check up from time to time on how it’s running. We can do this in two primary ways. The first is to monitor the various log files output by both our front-end web server and the Apache server running our application. The second is to connect to our application using rails console.

Looking at Log Files

To get a quick look at what’s happening in our application, we can use the tail command to examine log files as requests are made against our application. The most interesting data will usually be in the log files from the application itself. Even if Apache is running multiple applications, the logged output for each application is ...