Become a DevOps Engineer

Docker for DevOps

By taking this course, one is guaranteed to learn about Docker, and other integral variables such Dockerfiles, Docker Machine, Docker Kinematic, and Docker Registry. More importantly, this tutorial aims to help aspiring developers create their very first application.

Get Started with Docker

The introductory part composed of four sub-topics holds discussions about Docker, thoroughly tapping its uses, installation process, and advantages. In this tutorial, course takers are expected to understand the fundamentals of the platform including crucial execution process, implementation of sublime texts, utilization of Docker registry, and its lasting relevance to other operating systems. More importantly, this section enumerates the prerequisites of the production/ programming phase including a list of workable systems and programming languages.

First Docker Application

This five-part lesson then deals with the actual development process. It runs course takers through a series of tutorials, which aim to teach about the Dockerfile, set a project directory, compose a Docker prototype, and finally, develop a unique and error-free application.  Other crucial factors that are presented in this section are alternative key development processes, the concept of project scaffolding, Github best practices, working directory, and Flask implementation.               

Staging Server

The primary focus of this section is Server Staging, which will be put not only in the context of Docker but also in Sudo. The process carries several advantages, and those are comprehensively outlined before proceeding to the more complex part of the lesson. Not only does it focus on the theories, it also allows for an examination of operating systems so that course takers will be familiar with what is the most viable.  Other technical know-hows presented are:

• Provisioning the stage server
• Placing Docker images
• Pushing web application
• Securing the staged server
• Creating static IP address
• Creating SSH

Systemd

This part then tackles the concept of systemd, with focus on unit creation, assessment, and deployment. Divided into three sub-topics, the first lecture introduces the principles of units, their definition, function, and advantages. More so, it allows course takers to create their very first unit files while learning how to deploy them best. The second part then focuses on systemd, and its connection with the development of self-signed SSL certificates and official nginx image. Finally, the last part discusses methods on how to properly deploy files while also presenting the concept of Nginx.

Production Server Creation

Production servers were then put under study, in which course takers are expected to understand the process of creating and preparing droplet, configuring a domain, planning of scales, and remote logging. Composed of eight guides, a comprehensive learning is geared towards the execution of the following:

• Determining a hosting provider
• Logging on Digital Ocean
• Identifying Domain Registrar
• Evaluating encryption codes
• Incorporating certificates
• Verifying certificates
• Integrating additional services
• Configuring management tools s
• Monitoring metrics and alerting

Backups and Upgrades

Included in the final lesson are the practices after establishing an application. This involves utilization of Docker without the help of graphic user interface, creating automated backups and upgrades, and lastly, upgrading the Docker platform. It then aims to see proper demonstration of other crucial commands such as replacing debian with coreos, setting up automated functions, and upgrading the current version of Docker to larger and more optimized versions.