Book Image

A Developer's Essential Guide to Docker Compose

By : Emmanouil Gkatziouras
Book Image

A Developer's Essential Guide to Docker Compose

By: Emmanouil Gkatziouras

Overview of this book

Software development is becoming increasingly complex due to the various software components used. Applications need to be packaged with software components to facilitate their operations, making it complicated to run them. With Docker Compose, a single command can set up your application and the needed dependencies. This book starts with an overview of Docker Compose and its usage and then shows how to create an application. You will also get to grips with the fundamentals of Docker volumes and network, along with Compose commands, their purpose, and use cases. Next, you will set up databases for daily usage using Compose and, leveraging Docker networking, you will establish communication between microservices. You will also run entire stacks locally on Compose, simulate production environments, and enhance CI/CD jobs using Docker Compose. Later chapters will show you how to benefit from Docker Compose for production deployments, provision infrastructure on public clouds such as AWS and Azure, and wrap up with Compose deployments on said infrastructure. By the end of this book, you will have learned how to effectively utilize Docker Compose for day-to-day development.
Table of Contents (19 chapters)
1
Part 1: Docker Compose 101
6
Part 2: Daily Development with Docker Compose
12
Part 3: Deployment with Docker Compose

Adding Prometheus to the Compose network

We have set Prometheus up so that it is running successfully and also managed to monitor the Task Manager application. Since we added Prometheus to all of our applications, we should add it to the Compose file and parse the services.

Since Prometheus is interacting with the existing services, this is not an operation that should place from an external network. We should add a network that Prometheus will be able to operate. We will name it monitoring-network:

networks:
  location-network:
  redis-network:
  monitoring-network:

Then, we should create the Prometheus configuration file. So far, we have introduced three services:

  • task-manager
  • location-service
  • events-service

Here, task-manager and location-service are on port 8080. The configuration should look like this:

scrape_configs: 
  - job_name: 'task-manager' 
    scrape_interval: 1m...