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SRE Introducción

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AGENDA ● ¿Qué es SRE? ● SRE & DevOps ● Principios ● Prácticas ● SLOs - Vocabulario, Error Budgets ● Estado del Arte ● Un día en la vida de un SRE

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TITANIC QUEBEC BRIDGE

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¿QUE ES COMUN EN ESTOS CASOS?

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Esos sistemas no eran CONFIABLES! Confiabilidad describe la habilidad que tiene un sistema o un componente para funcionar bajo condiciones no esperadas durante un tiempo no especificado.

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INGENIERIA DE CONFIABILIDAD Ingeniería de Confiabilidad es la disciplina que aplica el know-how científico a un componente, producto o proceso para asegurar que desempeña la función para la que fue diseñado sin falla por un tiempo especificado.

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T O O L I N G MODELO OPERATIVO CLOUD SQUAD SRE DEVOPS FEATURE SQUAD 1 DEVOPS FEATURE SQUAD 2 DEVOPS FEATURE SQUAD N SRE SQUAD KPIs - Performance - Uptime - Minimal Cost per Service - Deployability SERVICES - Automation Framework - Self Service Infrastructure - Logging & Metrics Monitoring & Reporting - Scaling PRACTICES - Know the Service Level - Embrace Risk - Eliminate Toil - Know What's Broken and Why - Know the Service Level - Stuff Happens - Automate [Almost] Everything - Reliable Releases - Keep it Simple - Chaos Engineering

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AREAS DE EXPERIENCIA Introducción

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HISTORIA SRE 2003 DevOps is born Ben Treynor coined SRE 2014 First Conference about SRE: SRECon 2016-2018 SRE Books are released 2019 SRE massification

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3 CARACTERISTICAS NaLSD Evitar el trabajo innecesario Si a la curiosidad Es Toil!

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DEVOPS O SRE

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DEVOPS O SRE

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PRINCIPIOS

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Acoge el riesgo Monitorear Sistemas Distribuidos Objetivos de Nivel de Servicio Eliminar el Trabajo Manual PRINCIPIOS

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Automatización Ingeniería de Despliegue Simplicidad PRINCIPIOS

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You expect to build 100% reliable services—ones that never fail. However, increasing reliability is worse for a service rather than better! Extreme reliability comes at a cost! Embrace the Risk! No se … me gusta la adrenalina. ACOGIENDO EL RIESGO

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Toil is not just "work I don’t like to do." If a human operator needs to touch your system during normal operations, you have a bug. In Google at least 50% of each SRE’s time should be spent on engineering project work that will either reduce future toil. ELIMINANDO EL TRABAJO MANUAL

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Collecting, processing, aggregating, and displaying real-time quantitative data about a system, such as query counts and types, error counts and types, processing times, and server lifetimes. A Google SRE team with 10–12 members typically has one members whose primary assignment is to build and maintain monitoring systems for their service. MONITOREANDO

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ACOGIENDO EL RIESGO

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Automate Yourself Out of a Job: Automate ALL the Things! ● User account creation. ● Software or hardware installation preparation and decommissioning. ● Rollouts of new software versions. ● Runtime configuration changes. Automate the Resilience! AUTOMATIZANDO

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Continuous Build and Deployment! Release engineers have a solid understanding of source code management, compilers, build configuration languages, automated build tools, package managers, and installers. 4 principles: Self-Service Model, High Velocity, Hermetic Builds, Enforcement Policies and Procedures. INGENIERIA DE DESPLIEGUE

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PRACTICAS

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PRACTICAS Cultura Postmortem Estar On-Call Respuesta a Incidentes Admin. de Carga

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PRACTICAS Pruebas para Confiabilidad Simplicidad Ingeniería de Software Soluciones Eficaces

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PRACTICAS Pipelines Ingeniería del Caos Integridad de datos Canary Releases

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PRACTICAS

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PRACTICAS

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HABILIDADES ● Software Engineering ● Distributed Systems Design ● Operating systems ● Networking ● Databases ● Security ● Reliability ● Troubleshooting ● Customer support

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The best way to promote a DevOps & SRE culture is adopting a new view, a view focused in the syntoms, no in the causes ...