sre from scratch
DESCRIPTION
How to bootstrap an SRE team into your company. How to hire them, what to have them work on and how to interact with them as a team. Finally some thought on general practices to consider before your SREs arrive. There are also kitten pictures.TRANSCRIPT
![Page 1: SRE From Scratch](https://reader033.vdocuments.mx/reader033/viewer/2022061117/54680bcbaf7959925f8b579e/html5/thumbnails/1.jpg)
SRE FROM SCRATCH
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SITE RELIABILITY ENGINEERING
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PRODUCTION ENGINEERING
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DEVOPS?
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WHAT DO SRE DO?
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KEEP THE SITE UP
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KNOW THE PRODUCTION ENVIRONMENT
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KNOW THEIR PRODUCT
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LIAISON, ADVISOR, CONSULTANT
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TOOLING AND AUTOMATION
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TRIAGE
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SO? WHY DO I NEED THEM?
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UPTIME
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THE ENVIRONMENT IS A PRODUCT
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THEY’VE DONE THIS BEFORE
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OK... LET’S HIRE SOME
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WHAT TO LOOK FOR...
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SRES!
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SYSADMINS THAT PROGRAM
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PROGRAMMERS THAT DO SYSADMIN
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EXPERIENCE WITH SCALE
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HOW DO I INTERVIEW THEM?
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FUNDAMENTALS
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HARDWARE
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SYSTEM INTERNALS
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UNIX ENVIRONMENT
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NETWORKING
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APPLICATION SUPPORT
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OPERATING AT SCALE
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PROGRAMMING
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DON’T HIRE HEROES
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OK, I’VE HIRED SOME, WHAT SHOULD THEY DO?
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DESIGN REVIEW
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DATA FLOWS
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DEPENDENCIES
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FAILURE CONDITIONS
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SCALING
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LAUNCH PREPAREDNESS
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DOCUMENTATION
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BUILD INFRASTRUCTURE
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MONITORING
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DEPLOYMENT
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OPERATOR TOOLS
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CONFIGURATION MANAGEMENT
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SELF-SERVICE
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HOW SHOULD THE TEAMS INTERACT...
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DON’T GIVE ALL THE DAY-TO-DAY TASKS TO THE SRES
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SHARE THE LOAD
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HAVE YOUR SRES SIT WITH YOU
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INCLUDE THEM IN DISCUSSIONS THE AFFECT THE PRODUCTION ENVIRONMENT
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SOFTWARE IS NEVER THROWN OVER THE WALL
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HAND-OFFS
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SRES SHOULD BLOCK DANGEROUS CHANGES
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IF YOUR SRES ARE FIGHTING FIRES, THEY’RE NOT BUILDING
INFRASTRUCTURE
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IF YOUR SOFTWARE IS CAUSING FIRES, FIX IT
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ASK YOUR SRE TO HELP MAKE FLAME-PROOF SOFTWARE
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DON’T HIDE YOUR PROBLEMS FROM SRE
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SRE SHOULD BE INVOLVED TO UNDERSTAND THE PROBLEM
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EVERYONE SHOULD BE WRITING CODE OR MAKING
HARD DECISIONS
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OF COURSE THERE ARE OPTIONS...
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SRE CAN DO ALL THE SUPPORT
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SRES ARE A LIMITED RESOURCE
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SWE CAN SUPPORT PRODUCTS...
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APP SUPPORT BY SWE, INFRASTRUCTURE SUPPORT
BY SRE
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OR JUST ROTATE AROUND
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ANY PRODUCTION ADVICE?
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SELF-SERVICE
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ALL TOOLS SHOULD BE WRITTEN WITH THE IDEA THAT
ROBOTS CAN RUN THEM
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BEFORE ROBOTS RUN THEM, ANYONE IN THE COMPANY
SHOULD BE ABLE TO
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PEOPLE SHOULD MAKE HARD DECISIONS, NOT PUSH
BUTTONS
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GIVE PEOPLE ACCESS
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SWE SHOULD HAVE AS MUCH ACCESS AS THEY NEED.
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SWE ALREADY WRITES CODE THAT HAS ACCESS TO
SENSITIVE DATA
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PRODUCTION DATA STAYS IN PRODUCTION
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MAKE GOOD SYNTHETIC DATA
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MAKE GOOD WAYS TO TEST IN PROD
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CANARY, A/B TEST, ETC.
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LEARN TO TRIAGE
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THINGS BREAK, YOU MUST FIX THEM
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MONITORING, METRICS, OPERATOR TOOLS, FAST
BUILD AND DEPLOY
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TO FIX, YOU NEED TO KNOW IT’S BROKEN
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MONITORING
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MONITOR APPLICATIONS
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MONITOR BEHAVIOR
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STANDARDIZE YOUR METRICS
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PUSH METRICS OUT
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DECOUPLE YOUR SYSTEMS
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WATCH SYSTEMS AS A FUNCTION OF CAPACITY
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ONLY ALERT ON SYSTEM METRICS KNOWN TO HURT
YOU
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DATA STORES
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BEWARE THE RDBMS
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LEARN TO SHARD
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DITCH THE DURABILITY WHERE YOU CAN
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BUT FIGURE OUT HOW TO BOOTSTRAP NON-DURABLE
STORES
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MEMCACHE IS A BLESSING AND A CURSE
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ALWAYS CONSIDER A SITE-WIDE POWER OUTAGE
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USE DURABLE AND NON-DURABLE STORES TOGETHER
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ASK YOUR SRE FOR MORE INFO
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DESPITE ALL THIS, YOU CAN STILL FAIL...
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OBVIOUS FAILURE
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DOWNTIME
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DOWNTIME WITHOUT KNOWING
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NON-OBVIOUS FAILURES
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HEROIC ACTS
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WERE YOU UP ALL NIGHT?
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DID YOU DO THAT SAME TASK ALL DAY?
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DID A WHOLE TEAM STOP WHAT THEY WERE DOING?
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THESE ARE HEROIC ACTS, THEY ARE POISON
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HEROISM = FAILURE
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COMES FROM LEGACY SYSTEMS, PROCEDURES
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ALSO FROM PERSONALITY TRAITS...
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QUESTIONS?
• Grier Johnson
• @grierj