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about:me
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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
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Table of Contents
• Why is Organization Important in SRE?
• Soft Skills required to implement SRE
• SRE Organization Design
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Why is Organization Important in
SRE?
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Business metrics Include Engineering metrics 1
1 Mohit Suley and Kurt Andersen, Understanding Business Metrics Can Make You a Better SRE, 2019, SREcon
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SRE collaborate a lot!!
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Culture beats strategy
every time
— Chapter 31 - Communication and
Collaboration in SRE
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Soft Skills required to
implement SRE
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Why are soft skills so important?
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Chapter 31 -
Communication and
Collaboration in SRE
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“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
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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
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SRE ʹٻΊΒΕΔιϑτεΩϧ
• ΛޮՌతʹղܾ͢ΔͨΊʹɺଞऀͱ͏·͘ڠྗ͢Δೳྗ
͕ඞཁͰ͋Δ
• ͯ͢ͷ͑Λ͍ͬͯΔ͜ͱΛظ͞Ε͍ͯΔͷͰͳ͘ɺ
νʔϜ৫ͷதͰ୭ʹॿ͚ΛٻΊΕΑ͍ͷ͔ɺͲͷΑ͏ʹ
ίϛϡχέʔγϣϯΛͱΕΑ͍ͷ͔Λ͍ͬͯΔඞཁ͕͋Δ
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Soft Skills Example in Implement SRE
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Case Soft Skill
Postmortem Blameless, Critical Thinking...
SLI/SLO Organizational Behavior...
Building consensus with
managers
Facilitation, Negotiation...
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Organizational Behavior
• ਓΛಈ͔ͨ͢ΊͷΞϓϩʔν2ͭʹྨ͞ΕΔ
• HRM: ΈʹΑΔΞϓϩʔν
• OB: ରਓతͳΞϓϩʔν
• SLI/SLO ϙετϞʔςϜͳͲɺଞνʔϜΛר͖ࠐΉΑ͏ͳ
γʔϯͰ OB ʹཱͭ
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ϕʔεͱͳΔߦಈݪཧ
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ॏཁͱͳΔ3ͭͷجૅࣝΧςΰϦ
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جૅཧͷ۩ମྫ
• ݸਓ
• ex. εϖϯαʔʮණࢁϞσϧʯɺϘϠςΟζʮίϯϐςϯγʔ֓೦
ਤʯɺόϯσϡʔϥʮࣗݾޮྗײͷߏཁૉʯ
• ूஂ
• ex. ϨϰΟϯʮ৫มֵϓϩηεʯɺλοΫϚϯϞσϧ
• Ϧʔμʔγοϓ
• ex. ΧϦεϚϦʔμʔγοϓɺαʔόϯτϦʔμʔγοϓ...
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όϯσϡʔϥʮࣗݾޮྗײͷߏཁૉʯ5
5 GLOBIS ݟ࣮ʂ, MBAᶈ ࣗมֵɺߦ͖ͭΓͭɺগͣͭ͠ʲ࠷ऴճʳ, 2015
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ϨϰΟϯʮ৫มֵϓϩηεʯ
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OB ͷ࣮ફྫ: SLI/SLO ͷஈ֊తͳಋೖ
• ৫ͷಛੑΛѲ ্ͨ͠Ͱɺղౚˠมֵˠ࠶ౚ݁ͷεςοϓ Λ
ܦͭͭಋೖ͢Δ
• Dev ͷߦಈݪཧΛཧղ ্ͨ͠ͰɺSLI/SLO ͷಋೖোนΛԼ͛Δ
• SLI/SLO ΛτϦΨʔʹΞΫγϣϯͰ͖ΔΑ͏ʹɺߦಈม༰Λଅ
͢ࢪࡦ ʹऔΓΉ
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SLI/SLO ಋೖͷϑΣʔζ͚ͷྫ
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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
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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
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Facilitation
• ೲಘײͷ͋Δ݁ʹ౸ୡ͢Δ ͨΊͷεΩϧ
• ޮՌతͳ ձٞͷ४උͱਐߦ Λߦ͏ͨΊʹඞཁͳձٞϚωδϝϯ
τͷఆੴ
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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
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ཧͱݱ࣮ͷΪϟοϓʹର͢Δղ૾Λ্͛Δ
1. SRE धཁʹରͯ͠ϦιʔεෆʹؕΔ͜ͱ͕ଟ͍
2. εέʔϧ͢ΔߏΛऔΔඞཁ͕͋Δ
3. εέʔϥϏϦςΟΛอͱ͏ͱ͢Δͱ༷ʑͳϓϥΫςΟε͕ඞཁʹͳΔ
4. ࣮ࡍʹϦιʔε͕গͳ͍ͷͰɺগͣͭ͠ਐΊΔඞཁ͕͋Δʢཁό
ϥϯεʣɺͰࢥߟΛࢭΊͳ͍
5. → SRE ৫Λߏங͢Δ্ͰɺͰ͖ΔϙΠϯτͲ͜ʹ͋Δ͔Λ
ཧղ͢Δ
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SRE ৫Λߏங͢Δࡍʹॏཁͳ3ͭͷϙΠϯτ
• Roles
• Responsibilities
• Mindset
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දతͳ 2 ͭͷϩʔϧ6
6 New Relic, SRE-iously: Defining the Principles, Habits, and Practices of Site Reliability Engineering
, 2018
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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
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RACI Matrix example8
8 Devops Raci Matrix Ppt Powerpoint Presentation File Format
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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
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Mindset ͷཁ
• ඞͣ͠ Strategic ϑΣʔζ Visionary ϑΣʔζʹ͍Δඞཁͳ͍
• ෳͷϑΣʔζʹ·͕ͨΔଐੑΛ͍࣋ͬͯΔ͜ͱҰൠత
• େ෦डಈత͕ͩҰ෦ੵۃతଐੑΛ࣋ͭύλʔϯ͋Δ
• ϚΠϯυηοτ৫ͷঢ়ଶʹ߹ΘͤͯมԽ͍ͤͯ͘͞ඞཁ͕͋Δ
• e.g. डಈతˠੵۃతˠઓུత
• ࡞ۀΛநԽ͠ɺٕೳΛঝ͠ɺߟ͑Λ໌จԽ͠ͳ͕ΒϑΣʔζΛ্͛
͍ͯ͘
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Lessons Learned
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Why is Organization Important in SRE?
• ৴པੑϏδωεʹ͓͍ͯॏཁͳࢦඪͰ͋ΓɺاۀશମʹӨڹ͕͋Δ ͨΊ
• ৴པੑސ٬ʹڧ͘ඥ͍͓ͯΓɺSRE νʔϜ୯ମͰཧ͢Δͷࠔ
• SRE ͷ࣮ફɺଟ͘ͷίϥϘϨʔγϣϯΛ௨ͯ͡৫తʹऔΓΉඞཁ͕
͋Δ ͨΊ
• Ұ؏ͨ͠৴ʹج͍ͮͨϓϥΫςΟεͷ࣮ફʹɺจԽͷৢͱՁ؍ͷ
ڞ༗͕ඞཁෆՄ Ͱ͋ΔͨΊ
• ݸਓͰͳ͘ɺ৫తʹऔΓΉඞཁ͕͋Δ
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Soft Skills required to implement SRE
• SRE ʹϋʔυεΩϧ͚ͩͰͳ͘ιϑτεΩϧॏཁ
• ৫ʹ SRE Λಋೖ͢Δ্ͰॏཁͳιϑτεΩϧͷྫΛհ
• SLI/SLO ϙετϞʔςϜͳͲͷϓϥΫςΟεͷ࣮ફʹཱ
ͭεΩϧͱͯ͠ɺOrganizational Behavior ͱ Facilitation Λઆ
໌
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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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We are Hiring!
topotal.com/careers/software_engineer_sre