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SRE 101 (Site Reliability Engineering)

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Hussain Mansoor

This document provides an introduction to Site Reliability Engineering (SRE). It discusses DevOps principles and how SRE relates to and implements DevOps. Key aspects of SRE covered include guiding principles like eliminating toil, embracing risk, and measuring services through SLIs, SLOs, and error budgets. Specific SRE practices mentioned are removing toil, defining system criticalities, designing for availability, observability, chaos engineering, restricting production access, and focusing on metrics like MTTR and MTBF.

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Version 1.0 SRE 101 Introduction to Site Reliability Engineering Hussain Mansoor
Topics / Agenda 1 Why & What is DevOps? 2 SRE 3 Relation between SRE & DevOps 4 SRE Details
What is DevOps? - AWS DevOps is the combination of cultural philosophies, practices, and tools that increases an organization's ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than organizations using traditional software development and infrastructure management processes. Ref
Why DevOps? ● To align on the mindset and activities which speeds up software delivery ● Reduce Human Errors ● Consistency (because code) ● Reduce manual efforts
How to DevOps? *Generally via DevOps Principles ● Have CICD practices ● Shift Left ● Continuous Improvements ● Remove Silos ● Automate ● Shared Responsibilities ● Autonomous Teams
SRE Guiding Principles ● You can’t improve what you can’t measure ○ SLI, SLO, Error Budget ● Embracing Risk ● Eliminate Toil ● Implementation agnostic monitoring ● Automate ● Simplicity*
Relation between SRE & DevOps
Agile Manifesto Scrum, Kanban, Lean, XP DevOps SRE, Systems Engineer, Platform Engineer, Automation Engineer, Cloud x Engineer
SRE vs DevOps
● Non Competing ● Class SRE Implements Interface DevOps https://goo.gl/CKv3tV ● SRE is part of whole DevOps Umbrella ○ SRE defines the practices which DevOps suggests ○ And MORE SRE vs DevOps
SRE Details SLI Service Level Indicator Availability, Throughput, Error Rate SLO Service Level Objectives E.g.: 99% availability Error Budget the amount of error that your service can accumulate over a certain period of time. Tolerance of user happiness
SRE Practices ● Remove Toil ● Defining criticalities (System, downtime, unavailability) ● System Designing (DR, Multi or Poly Cloud, Multi-Region Deployments) ● Observability ● Chaos Engineering
SRE Practices ● ONLY people who can touch Production Environment ● MTTR, MTBF ● Incident Management ● Postmortems
SRE 101 (Site Reliability Engineering)
SRE 101 (Site Reliability Engineering)

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SRE 101 (Site Reliability Engineering)

  • 1. Version 1.0 SRE 101 Introduction to Site Reliability Engineering Hussain Mansoor
  • 2. Topics / Agenda 1 Why & What is DevOps? 2 SRE 3 Relation between SRE & DevOps 4 SRE Details
  • 3. What is DevOps? - AWS DevOps is the combination of cultural philosophies, practices, and tools that increases an organization's ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than organizations using traditional software development and infrastructure management processes. Ref
  • 4. Why DevOps? ● To align on the mindset and activities which speeds up software delivery ● Reduce Human Errors ● Consistency (because code) ● Reduce manual efforts
  • 5. How to DevOps? *Generally via DevOps Principles ● Have CICD practices ● Shift Left ● Continuous Improvements ● Remove Silos ● Automate ● Shared Responsibilities ● Autonomous Teams
  • 6. SRE Guiding Principles ● You can’t improve what you can’t measure ○ SLI, SLO, Error Budget ● Embracing Risk ● Eliminate Toil ● Implementation agnostic monitoring ● Automate ● Simplicity*
  • 8. Agile Manifesto Scrum, Kanban, Lean, XP DevOps SRE, Systems Engineer, Platform Engineer, Automation Engineer, Cloud x Engineer
  • 10. ● Non Competing ● Class SRE Implements Interface DevOps https://goo.gl/CKv3tV ● SRE is part of whole DevOps Umbrella ○ SRE defines the practices which DevOps suggests ○ And MORE SRE vs DevOps
  • 11. SRE Details SLI Service Level Indicator Availability, Throughput, Error Rate SLO Service Level Objectives E.g.: 99% availability Error Budget the amount of error that your service can accumulate over a certain period of time. Tolerance of user happiness
  • 12. SRE Practices ● Remove Toil ● Defining criticalities (System, downtime, unavailability) ● System Designing (DR, Multi or Poly Cloud, Multi-Region Deployments) ● Observability ● Chaos Engineering
  • 13. SRE Practices ● ONLY people who can touch Production Environment ● MTTR, MTBF ● Incident Management ● Postmortems

Editor's Notes

  • #7: We define toil as mundane, repetitive operational work providing no enduring value, which scales linearly with service growth A complex system that works necessarily evolved from a simple system that works. Simplicity, goes into this topic in detail