Book Image

AWS Certified DevOps Engineer - Professional Certification and Beyond

By : Adam Book
Book Image

AWS Certified DevOps Engineer - Professional Certification and Beyond

By: Adam Book

Overview of this book

The AWS Certified DevOps Engineer certification is one of the highest AWS credentials, vastly recognized in cloud computing or software development industries. This book is an extensive guide to helping you strengthen your DevOps skills as you work with your AWS workloads on a day-to-day basis. You'll begin by learning how to create and deploy a workload using the AWS code suite of tools, and then move on to adding monitoring and fault tolerance to your workload. You'll explore enterprise scenarios that'll help you to understand various AWS tools and services. This book is packed with detailed explanations of essential concepts to help you get to grips with the domains needed to pass the DevOps professional exam. As you advance, you'll delve into AWS with the help of hands-on examples and practice questions to gain a holistic understanding of the services covered in the AWS DevOps professional exam. Throughout the book, you'll find real-world scenarios that you can easily incorporate in your daily activities when working with AWS, making you a valuable asset for any organization. By the end of this AWS certification book, you'll have gained the knowledge needed to pass the AWS Certified DevOps Engineer exam, and be able to implement different techniques for delivering each service in real-world scenarios.
Table of Contents (31 chapters)
1
Section 1: Establishing the Fundamentals
7
Section 2: Developing, Deploying, and Using Infrastructure as Code
16
Section 3: Monitoring and Logging Your Environment and Workloads
21
Section 4: Enabling Highly Available Workloads, Fault Tolerance, and Implementing Standards and Policies
27
Section 5: Exam Tips and Tricks

Basic metrics in CloudWatch for AWS services

CloudWatch automatically monitors a basic set of metrics at 5-minute intervals for free. Most AWS services send metrics automatically for free to CloudWatch metrics. These include foundational services such as EC2, S3, EBS, Kinesis, Lambda, and many others.

Basic monitoring for the EC2 service

When an instance is created, seven metrics are pushed out to CloudWatch at a frequency of every 5 minutes. You can change this frequency to 1-minute intervals for an additional charge. CloudWatch also makes a binary status check available as part of their Free Tier. Using this check is an essential measurement to see if your instance is up and running. It is not a good check to ensure that your application is performing correctly. The status check can be a canary in the coalmine for things such as AMI issues, accidentally (or purposefully) terminating an instance, or even Availability Zone or regional failures.

Besides the status check...