Next, we are going to take a look at monitoring our containers and also Docker hosts. In Chapter 4, Managing Containers, we discussed the docker container top and docker container stats commands. You may recall that both of these commands show real-time information only; there is no historical data kept.
While this is great if you are trying to debug a problem as it is running or want to quickly get an idea of what is going on inside your containers, it is not too helpful if you need to look back at a problem: maybe you have configured your containers to restart if they have become unresponsive. While that will help with the availability of your application, it isn't much of a help if you need to look at why your container became unresponsive.
In the GitHub repository in the /chapter14 folder, there is a folder called prometheus in which there is a Docker Compose...