Exploring automation We’re going to start with why automation is needed in life in general and then we’ll move toward a more specific definition that relates to DevOps and other tech team activities. Automation is for the lazy, but many do not realize how hard you must work and how much you must study to […]
Category: Python Certifications
Understanding logging and monitoring – Introducing DevOps Principles
Understanding logging and monitoring Switching to a more grounded topic, one of the driving principles of DevOps is logging and monitoring instances, endpoints, services, and whatever else you can track and trace. This is necessary because regardless of whatever you do, how clean your code is, or how good your server configuration is, something will […]
Monitoring – Introducing DevOps Principles
Monitoring When you look at the title of this section, Understanding logging and monitoring, some of you might wonder, what’s the difference? Well, that’s valid. It took me a while to figure that out as well. And I believe that it comes down to a couple of things: In many ways, it is like the […]
How to respond to an incident (in life and DevOps) – Introducing DevOps Principles
How to respond to an incident (in life and DevOps) Incidents happen, and the people who are responsible for dealing with these incidents need to handle them. Firefighters have to battle fires, doctors have to treat the sick, and DevOps engineers have to contend with a number of incidents that can occur when running the […]
Site reliability engineering – Introducing DevOps Principles
Site reliability engineering So, site reliability engineering (SRE) is considered a form of DevOps by many and is considered to be separate from DevOps by others. I’m putting this section in here because, regardless of your opinion on the subject, you as a DevOps Engineer will have to deal with the concepts of site reliability, […]
Post-mortems – Introducing DevOps Principles
Post-mortems An incident happens. It affects business value and the users of the application, and then it goes away or is solved. But what’s to say it doesn’t happen again? What could be done to mitigate it before it even has the chance to happen again? Post-mortems are the answer to all of that. Any […]
SLIs, SLOs, and SLAs – Introducing DevOps Principles
SLIs, SLOs, and SLAs Agreements of service, terms of services, contracts, and many other types of agreements are designed so that two parties in agreement with one another can draw out that agreement and are then beholden to it. You need a contract when one party pays another for a service, when two parties exchange […]
RTOs and RPOs – Introducing DevOps Principles
RTOs and RPOs These two abbreviations are much more availability-focused than the other three. Recovery Time Objectives (RTOs) and Recovery Point Objectives (RPOs) are used as measuring sticks to measure the borders of availability. If an application fails to fall within its RTO or RPO then it hasn’t fulfilled its guarantee of availability. RTOs and […]
Error budgets – Introducing DevOps Principles
Error budgets In a team following DevOps principles, error budgets become a very important part of the direction that the team takes in the future. An error budget is calculated with this formula: Error budget = 1-SLA (in decimal) What this basically means is that an error budget is the percentage left over from the […]
Delving into infrastructure as a code – Introducing DevOps Principles
Delving into infrastructure as a code Finally, in a book about Python, we get to a section about code. So far, I’ve given you a lot of information about what needs to be accomplished but to accomplish the things we want especially in this book, we must have a method, a tool, a weapon, i.e., […]