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

What is Prometheus?

Prometheus is a popular open source monitoring solution with a wide range of capabilities including event monitoring and alerting. Prometheus follows an HTTP pull model. The applications expose their metrics through an HTTP endpoint. Prometheus has the ability to parse the exposed metrics. By configuring certain applications as targets on Prometheus, Prometheus will proceed with parsing the exposed metrics. Additionally, for services where exposing an HTTP endpoint is not feasible, Prometheus offers Pushgateway, an intermediary service where other services can push their data.

Once retrieved, the data is recorded inside a real-time series database, which is part of Prometheus. This makes it possible to have flexible queries and real-time alerting.

Here are some of the features that Prometheus offers:

  • A data model for time series metrics
  • A query language to execute queries upon the retrieved time series data
  • Storing metrics in one single autonomous...