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SRE Practices in Organizations
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Narimichi Takamura
November 16, 2021
Technology
16
9.2k
SRE Practices in Organizations
Infra Study 2nd #7「SREと組織」の登壇資料です。
https://forkwell.connpass.com/event/228038/
Narimichi Takamura
November 16, 2021
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Transcript
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Motivation • SRE ͷ৴ཧղͨ͠ && SRE ͷϓϥΫςΟεཧղͨ͠ • ҰํͰɺͲͷΑ͏ʹͯࣗࣾ͠ʹ SRE
Λಋೖ͢Ε͍͍ͷ͔ϐϯͱ͜ͳ͍ • IT ٕज़Ҏ֎ʹཁૉ͕ඞཁͦ͏͕ͩɺ۩ମతʹͲͷΑ͏ͳͷ͕͋Δͷ͔ • SRE ʹؔ͢ΔଞࣾࣄྫࢀߟʹͳΔ • ҰํͰɺࣗࣾద༻͢ΔͨΊʹɺͲͷΑ͏ͳ؍Ͱݕ౼͢ΕΑ͍ͷ͔ → ιϑτεΩϧ ͱ SRE ৫ͷઃܭϙΠϯτ ʹ͍ͭͯ͠·͢ → ࠓճͷൃද͕ ࣗࣾͷ SRE ৫ͷ্ཱͪ͛ɾशख़ ͷҰॿʹͳΕ͍Ͱ͢
Table of Contents • Why is Organization Important in SRE?
• Soft Skills required to implement SRE • SRE Organization Design
Why is Organization Important in SRE?
Business metrics Include Engineering metrics 1 1 Mohit Suley and
Kurt Andersen, Understanding Business Metrics Can Make You a Better SRE, 2019, SREcon
SRE collaborate a lot!!
Culture beats strategy every time — Chapter 31 - Communication
and Collaboration in SRE
Soft Skills required to implement SRE
Why are soft skills so important?
Chapter 31 - Communication and Collaboration in SRE
“A good SRE has an ability to critically examine a
system and use that to guide them when asking questions of the system.” — Jamie Wilkinson, SRE at Google
Top 5 Soft Skills in SRE3 1. Problem Solving 2.
Teamwork 3. Composure underpressure 4. Written communication 5. Verbal communicaiton 3 Catchpoint, 2018 SRE report
SRE ʹٻΊΒΕΔιϑτεΩϧ • ΛޮՌతʹղܾ͢ΔͨΊʹɺଞऀͱ͏·͘ڠྗ͢Δೳྗ ͕ඞཁͰ͋Δ • ͯ͢ͷ͑Λ͍ͬͯΔ͜ͱΛظ͞Ε͍ͯΔͷͰͳ͘ɺ νʔϜ৫ͷதͰ୭ʹॿ͚ΛٻΊΕΑ͍ͷ͔ɺͲͷΑ͏ʹ ίϛϡχέʔγϣϯΛͱΕΑ͍ͷ͔Λ͍ͬͯΔඞཁ͕͋Δ
Soft Skills Example in Implement SRE
Case Soft Skill Postmortem Blameless, Critical Thinking... SLI/SLO Organizational Behavior...
Building consensus with managers Facilitation, Negotiation...
Organizational Behavior • ਓΛಈ͔ͨ͢ΊͷΞϓϩʔν2ͭʹྨ͞ΕΔ • HRM: ΈʹΑΔΞϓϩʔν • OB: ରਓతͳΞϓϩʔν
• SLI/SLO ϙετϞʔςϜͳͲɺଞνʔϜΛר͖ࠐΉΑ͏ͳ γʔϯͰ OB ʹཱͭ
None
ϕʔεͱͳΔߦಈݪཧ
ॏཁͱͳΔ3ͭͷجૅࣝΧςΰϦ
جૅཧͷ۩ମྫ • ݸਓ • ex. εϖϯαʔʮණࢁϞσϧʯɺϘϠςΟζʮίϯϐςϯγʔ֓೦ ਤʯɺόϯσϡʔϥʮࣗݾޮྗײͷߏཁૉʯ • ूஂ •
ex. ϨϰΟϯʮ৫มֵϓϩηεʯɺλοΫϚϯϞσϧ • Ϧʔμʔγοϓ • ex. ΧϦεϚϦʔμʔγοϓɺαʔόϯτϦʔμʔγοϓ...
όϯσϡʔϥʮࣗݾޮྗײͷߏཁૉʯ5 5 GLOBIS ݟ࣮ʂ, MBAᶈ ࣗมֵɺߦ͖ͭΓͭɺগͣͭ͠ʲ࠷ऴճʳ, 2015
ϨϰΟϯʮ৫มֵϓϩηεʯ
OB ͷ࣮ફྫ: SLI/SLO ͷஈ֊తͳಋೖ • ৫ͷಛੑΛѲ ্ͨ͠Ͱɺղౚˠมֵˠ࠶ౚ݁ͷεςοϓ Λ ܦͭͭಋೖ͢Δ •
Dev ͷߦಈݪཧΛཧղ ্ͨ͠ͰɺSLI/SLO ͷಋೖোนΛԼ͛Δ • SLI/SLO ΛτϦΨʔʹΞΫγϣϯͰ͖ΔΑ͏ʹɺߦಈม༰Λଅ ͢ࢪࡦ ʹऔΓΉ
SLI/SLO ಋೖͷϑΣʔζ͚ͷྫ
SLI/SLO ಋೖ: ϑΣʔζ1 ·ͣ SRE ͕ओମͱͳͬͯ৫ʹ SLI/SLO Λಋೖ͠ɺՁݕূΛߦ͏͜ͱΛࢦ ͢ɻ ӡ༻શମΛר͖ࠐΈͭͭɺSRE
͕ίϯτϩʔϧͰ͖ΔൣғͰ͡ΊΔͱΑ͍ɻ 1. SLI/SLO ͕ఆٛ͞Ε͍ͯΔ 2. SLI/SLO ʹؔ͢ΔϫʔΫϑϩʔ͕ఆٛ͞Ε͍ͯΔ 3. αʔϏενʔϜΛר͖ࠐΈͭͭɺSRE ͕ओମͱͳͬͯ SLO ͷӡ༻͕ߦΘΕ͍ͯΔ • SLO ͷΛτϦΨʔʹΞϥʔτ௨Λ͢Δ • ৼΓฦΓձΛߦ͏
SLI/SLO ಋೖ: ϑΣʔζ2 SRE ͷతͳࢧԉͳ͠Ͱ SLI/SLO ͕ӡ༻͞ΕΔମ੍Λࢦ͢ɻ ϑΣʔζ1ͰɺSLI/SLO ʹର͢ΔՁ͕ೝΊΒΕ͔ͯΒ͜ͷϑΣʔζʹҠߦ͢Δɻ ר͖ࠐΉਓϩʔϧ͕૿͍͑ͯΔ͕ϑΣʔζ1ͱҟͳΔɻ
ΑΓଟ͘ͷਓ͕ސ٬ࢹΛ࣋ͬͯ SLI/SLO Λӡ༻͢Δঢ়ଶΛࢦ͢ɻ 1. PdM ࣄۀऀͳͲͱͱʹɺࣄۀࢹΛ౿·͑ͯ SLI/SLO ΛఆΊΔ͜ͱ ͕Ͱ͖Δ 2. αʔϏενʔϜ͕ओମͱͳͬͯ SLO ͷӡ༻͕ߦΘΕ͍ͯΔ 3. Embedded SRE ͱͯ͠αʔϏενʔϜΛϑΥϩʔ͢Δମ੍͕͋Δ
Facilitation • ೲಘײͷ͋Δ݁ʹ౸ୡ͢Δ ͨΊͷεΩϧ • ޮՌతͳ ձٞͷ४උͱਐߦ Λߦ͏ͨΊʹඞཁͳձٞϚωδϝϯ τͷఆੴ
it's difficult to find someone who's lucky enough to only
have useful, effective meetings. This is equally true for SRE. — Chapter 31 - Communication and Collaboration in SRE
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SRE Organization Design
ཧͱݱ࣮ͷΪϟοϓʹର͢Δղ૾Λ্͛Δ 1. SRE धཁʹରͯ͠ϦιʔεෆʹؕΔ͜ͱ͕ଟ͍ 2. εέʔϧ͢ΔߏΛऔΔඞཁ͕͋Δ 3. εέʔϥϏϦςΟΛอͱ͏ͱ͢Δͱ༷ʑͳϓϥΫςΟε͕ඞཁʹͳΔ 4. ࣮ࡍʹϦιʔε͕গͳ͍ͷͰɺগͣͭ͠ਐΊΔඞཁ͕͋Δʢཁό
ϥϯεʣɺͰࢥߟΛࢭΊͳ͍ 5. → SRE ৫Λߏங͢Δ্ͰɺͰ͖ΔϙΠϯτͲ͜ʹ͋Δ͔Λ ཧղ͢Δ
SRE ৫Λߏங͢Δࡍʹॏཁͳ3ͭͷϙΠϯτ • Roles • Responsibilities • Mindset
දతͳ 2 ͭͷϩʔϧ6 6 New Relic, SRE-iously: Defining the Principles,
Habits, and Practices of Site Reliability Engineering , 2018
Responsibilities • ۀͷ୲ͷॴࡏΛ໌֬ʹ͢Δ • RACIϚτϦΫεҎԼͷ4ͭͷཁૉΛ໌֬ʹࣔ͢ࡍʹ༗ޮ • RʢResponsibleʣ: ࣮ߦऀ • AʢAccountableʣ:
આ໌ऀ • CʢConsultedʣ: ૬ஊઌ • IʢInformedʣ: ใࠂઌ • Google ͷهࣄͰ RACI ༻ޠ͕ར༻͞Ε͍ͯΔ7 7 Alex Bramley, Are we there yet? Thoughts on assessing an SRE team’s maturity, 2021
RACI Matrix example8 8 Devops Raci Matrix Ppt Powerpoint Presentation
File Format
Mindset • ৫ͷ৴པੑʹ 5 ͭͷجຊతஈ֊͕͋Γɺ͋Δ࣌ͷ৫ͷϚΠϯυηοτΛද͢9 • Absent: ৫ʹͱͬͯ৴པੑޙճ͠ʹͳ͍ͬͯΔঢ়ଶ • Reactive:
ۙͰੜͨ͡৴པੑͷͷϑΥϩʔ͕ߦΘΕΔ͕ɺγεςϜͷظతͳࢿ͠ͳ͍ • Proactive: ఆظతͳ৫ϓϩηεΛ௨ͯ͡જࡏతͳ৴པੑϦεΫ͕ಛఆ͞Εରॲ͞ΕΔ • Strategic: ΞʔΩςΫνϟɺϓϩμΫτɺϓϩηεΛମܥతʹมߋ͢Δ͜ͱͰϦεΫͷΫϥεΛཧ ͢Δ • Visionary: ৴པੑͷ࠷ߴҐʹ౸ୡ͓ͯ͠Γɺ৴པੑͷ෯͍औΓΈΛϕετϓϥΫςΟε͓Αͼ ܦݧʹج͍ͮͯࣾ֎ͰਪਐͰ͖Δ 9 What’s your org’s reliability mindset? Insights from Google SREs
Mindset ͷཁ • ඞͣ͠ Strategic ϑΣʔζ Visionary ϑΣʔζʹ͍Δඞཁͳ͍ • ෳͷϑΣʔζʹ·͕ͨΔଐੑΛ͍࣋ͬͯΔ͜ͱҰൠత
• େ෦डಈత͕ͩҰ෦ੵۃతଐੑΛ࣋ͭύλʔϯ͋Δ • ϚΠϯυηοτ৫ͷঢ়ଶʹ߹ΘͤͯมԽ͍ͤͯ͘͞ඞཁ͕͋Δ • e.g. डಈతˠੵۃతˠઓུత • ࡞ۀΛநԽ͠ɺٕೳΛঝ͠ɺߟ͑Λ໌จԽ͠ͳ͕ΒϑΣʔζΛ্͛ ͍ͯ͘
Lessons Learned
Why is Organization Important in SRE? • ৴པੑϏδωεʹ͓͍ͯॏཁͳࢦඪͰ͋ΓɺاۀશମʹӨڹ͕͋Δ ͨΊ •
৴པੑސ٬ʹڧ͘ඥ͍͓ͯΓɺSRE νʔϜ୯ମͰཧ͢Δͷࠔ • SRE ͷ࣮ફɺଟ͘ͷίϥϘϨʔγϣϯΛ௨ͯ͡৫తʹऔΓΉඞཁ͕ ͋Δ ͨΊ • Ұ؏ͨ͠৴ʹج͍ͮͨϓϥΫςΟεͷ࣮ફʹɺจԽͷৢͱՁ؍ͷ ڞ༗͕ඞཁෆՄ Ͱ͋ΔͨΊ • ݸਓͰͳ͘ɺ৫తʹऔΓΉඞཁ͕͋Δ
Soft Skills required to implement SRE • SRE ʹϋʔυεΩϧ͚ͩͰͳ͘ιϑτεΩϧॏཁ •
৫ʹ SRE Λಋೖ͢Δ্ͰॏཁͳιϑτεΩϧͷྫΛհ • SLI/SLO ϙετϞʔςϜͳͲͷϓϥΫςΟεͷ࣮ફʹཱ ͭεΩϧͱͯ͠ɺOrganizational Behavior ͱ Facilitation Λઆ ໌
SRE Organization Design • ࣗࣾʹͱͬͯదͳ SRE ৫Λͭ͘Δࡍʹॏཁͳ3ͭͷϙΠϯτΛհ • গͣͭ͠ਐΊΔͨΊʹ֤ϙΠϯτΛஈ֊తʹҠߦ͍ͯ͘͠ͱΑ͍ •
Roles: ·ͣ Pure SRE ͔Β͡Ίͯɺঃʑʹ Embedded SRE Λݕ౼͢Δ • Responsibilities: ·ͣ SRE ͕ R Λ୲͍ͳ͕Βɺগͣͭ͠ݖݶҠৡΛਐ Ίͯ A C ʹҠߦ͢Δ • Mindset: ·ͣ Absent Λղফ͠ɺม༰Ͱ͖Δ෦Λݟ͚ͭͯ Reactive Proactive ʹ͍ͯ͘͠
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