Golangで学ぶHot deployの仕組み

!UTVSVCFF(.01FQBCP *OD ۝भΠϯϑϥަྲྀษڧձ ,JYT 7PM (PMBOHͰֶͿ )PUEFQMPZͷ࢓૊Έ

(.0ϖύϘɹΠϯϑϥΤϯδχΞ !UTVSVCFF

೥݄(.0ϖύϘೖࣾ ΠϯϑϥΤϯδχΞྺϲ݄

໨࣍ w)PUEFQMPZͱ͸ʁͳͥඞཁ͔ʁ w)PUEFQMPZͷ࢓૊Έ w(PMBOHͰ࣮૷ͯ͠Έͨ

఻͍͑ͨ͜ͱ wμ΢ϯλΠϜθϩΛࢧ͑Δ)PUEFQMPZͷ࢓૊ΈͷҰྫ w(PMBOHΛ௨ͯ͡௿ϨΠϠʔͷٕज़ΛֶͿ͜ͱͰɺ  ΤϯδχΞͱͯ͠ͷ෯͕޿͕ΔͷͰ͸ʁ wٕज़ॻಡΜͰ;Ή;Ή͢ΔΑΓ࣮૷ͯ͠Έͨํ͕ཧղ  ͠΍͍͢

)PUEFQMPZͱ͸ʁ ͳͥඞཁ͔ʁ

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF (PMBOHͷ৔߹ɺ όΠφϦͷ্ॻ͖

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF "QQMJDBUJPO 4UPQ (PMBOHͷ৔߹ɺ
όΠφϦͷ্ॻ͖

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF "QQMJDBUJPO 4UPQ "QQMJDBUJPO
4UBSU (PMBOHͷ৔߹ɺ όΠφϦͷ্ॻ͖ ࠶ىಈ

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF "QQMJDBUJPO 4UPQ "QQMJDBUJPO
4UBSU (PMBOHͷ৔߹ɺ όΠφϦͷ্ॻ͖ ϦΫΤετΛॲཧ Ͱ͖ͳ͍͕࣌ؒൃੜ ࠶ىಈ

)PUEFQMPZ͕ͳͥඞཁ͔ʁ wΘ͔ͣͳؒͰ΋Քಇ͍ͯ͠ΔαʔϏεΛࢭΊͨ͘ͳ͍ w)PUEFQMPZΛಋೖ͢Δ͜ͱͰɺγεςϜӡ༻ʹ͓͚Δ  อकੑ͕޲্͠ɺਝ଎ͳ։ൃαΠΫϧ͕࣮ݱͰ͖Δ

)PUEFQMPZͷ࢓૊Έ

4FSWFS4UBSUFS w؆୯ʹ)PUEFQMPZͰ͖ΔΑ͏ʹ͢ΔͨΊͷDQBONPEVMF w1FSMͰ࣮૷͞Ε͍ͯΔ͕ɺγάφϧͱ؀ڥม਺Λ࢖ͬͨ  ൚༻ੑͷߴ͍࢓૊ΈͷͨΊɺ͞·͟·ͳݴޠͰར༻Մೳ

4FSWFS4UBSUFS w؆୯ʹ)PUEFQMPZͰ͖ΔΑ͏ʹ͢ΔͨΊͷDQBONPEVMF w1FSMͰ࣮૷͞Ε͍ͯΔ͕ɺγάφϧͱ؀ڥม਺Λ࢖ͬͨ  ൚༻ੑͷߴ͍࢓૊ΈͷͨΊɺ͞·͟·ͳݴޠͰར༻Մೳ ಈ࡞Λݴ༿Ͱઆ໌͢Δͱɾɾ ʮ৽͍͠ϓϩηεΛىಈͯ͠৽͍͠ϦΫΤετΛͦͪΒʹ ྲྀͭͭ͠ɺݹ͍ϓϩηεͷϦΫΤετ͕׬ྃͨ͠Βਖ਼͘͠ ऴྃͤ͞Δʯ

4FSWFS4UBSUFS w؆୯ʹ)PUEFQMPZͰ͖ΔΑ͏ʹ͢ΔͨΊͷDQBONPEVMF w1FSMͰ࣮૷͞Ε͍ͯΔ͕ɺγάφϧͱ؀ڥม਺Λ࢖ͬͨ  ൚༻ੑͷߴ͍࢓૊ΈͷͨΊɺ͞·͟·ͳݴޠͰར༻Մೳ ಈ࡞Λݴ༿Ͱઆ໌͢Δͱɾɾ ʮ৽͍͠ϓϩηεΛىಈͯ͠৽͍͠ϦΫΤετΛͦͪΒʹ ྲྀͭͭ͠ɺݹ͍ϓϩηεͷϦΫΤετ͕׬ྃͨ͠Βਖ਼͘͠ ऴྃͤ͞Δʯ (SBDFGVM3FTUBSUʢ༏խͳ࠶ىಈʣ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ TUBSU@TFSWFS 1BSFOU start_server —-port 8888 —- ./server TFSWFS $IJME
TPDLFU GPSLFYFD TPDLFUΛڞ༗ BDDFQU TUBSU@TFSWFSɿ(SBDFGVMSFTUBSUͷͨΊͷϓϩάϥϜ TFSWFSɿ࣮ߦ͍ͨ͠ϓϩάϥϜ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ TUBSU@TFSWFS 1BSFOU start_server —-port 8888 —- ./server TFSWFS $IJME
TPDLFU GPSLFYFD TPDLFUΛڞ༗ BDDFQU TUBSU@TFSWFSɿ(SBDFGVMSFTUBSUͷͨΊͷϓϩάϥϜ TFSWFSɿ࣮ߦ͍ͨ͠ϓϩάϥϜ ᶃϓϩάϥϜʹมߋʂ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ kill -HUP <master pid> TPDLFU BDDFQU TUBSU@TFSWFS 1BSFOU TFSWFS
$IJME TUBSU@TFSWFSɿ(SBDFGVMSFTUBSUͷͨΊͷϓϩάϥϜ TFSWFSɿ࣮ߦ͍ͨ͠ϓϩάϥϜ ᶄ4*()61 ᶃϓϩάϥϜʹมߋʂ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ kill -HUP <master pid> TPDLFU GPSLFYFD TFSWFS $IJME ᶄ4*()61
BDDFQU BDDFQU TUBSU@TFSWFS 1BSFOU TFSWFS $IJME ᶅ৽ϓϩάϥϜͰىಈ ᶃϓϩάϥϜʹมߋʂ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ kill -HUP <master pid> TPDLFU ऴྃ͢Δલʹʜ ᶃ৽نϦΫΤεड෇ ɹͷఀࢭ ᶄݱࡏॲཧதͷ
ϦΫΤετͷ׬ྃ GPSLFYFD (SBDFGVM4IVUEPXO BDDFQU BDDFQU TUBSU@TFSWFS 1BSFOU TFSWFS $IJME ᶅ৽ϓϩάϥϜͰىಈ ᶄ4*()61 ᶆ4*(5&3. TFSWFS $IJME ᶃϓϩάϥϜʹมߋʂ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ TUBSU@TFSWFS 1BSFOU kill -HUP <master pid> TPDLFU GPSLFYFD TFSWFS
$IJME BDDFQU ᶆ4*(5&3. ᶅ৽ϓϩάϥϜͰىಈ ᶄ4*()61 TFSWFS $IJME ᶃϓϩάϥϜʹมߋʂ ऴྃ͢Δલʹʜ ᶃ৽نϦΫΤεड෇ ɹͷఀࢭ ᶄݱࡏॲཧதͷ ϦΫΤετͷ׬ྃ (SBDFGVM4IVUEPXO

࣮૷ͯ͠Έͨ

ϛχϚϜͰ࣮૷ͯ͠Έͨ IUUQTHJUIVCDPNUTVSVCFFHSBDFGVMSFTUBSUHP

࣮૷ϙΠϯτ̍ʙγάφϧϋϯυϥ func waitSignal(l net.Listener) { c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGTERM) go func() { sig := <-c switch sig { case syscall.SIGTERM: signal.Stop(c) l.Close() } }() } γάφϧͱ͸ϓϩηεؒ௨৴ͷҰछ ϓϩηεʹγάφϧΛૹ৴͢Δͱɺͦͷϓϩηεͷਖ਼ৗॲཧʹׂΓࠐΜͰɺ γάφϧݻ༗ͷॲཧΛ࣮ߦͰ͖Δ ͓खܰʹγάφϧͷϋϯυϦϯά͕ Ͱ͖Δ

࣮૷ϙΠϯτ̍ʙγάφϧϋϯυϥ func waitSignal(l net.Listener) { c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGTERM) go func() { sig := <-c switch sig { case syscall.SIGTERM: signal.Stop(c) l.Close() } }() } γάφϧͱ͸ϓϩηεؒ௨৴ͷҰछ ϓϩηεʹγάφϧΛૹ৴͢Δͱɺͦͷϓϩηεͷਖ਼ৗॲཧʹׂΓࠐΜͰɺ γάφϧݻ༗ͷॲཧΛ࣮ߦͰ͖Δ HPSPVUJOFͰγάφϧΛ଴ͪड͚Δ ͓खܰʹγάφϧͷϋϯυϦϯά͕ Ͱ͖Δ

࣮૷ϙΠϯτ̎ʙϑΝΠϧσΟεΫϦϓλ func forkExec(l *net.TCPListener) (*os.Process, error) { progName, _ :=
exec.LookPath(os.Args[0]) pwd, _ := os.Getwd() f, _ := l.File() defer f.Close() files := []*os.File{os.Stdin, os.Stdout, os.Stderr, f} fdEnv := fmt.Sprintf("%s=%d", "FD_KEY", len(files)-1) return os.StartProcess(progName, os.Args, &os.ProcAttr{ Dir: pwd, Env: append(os.Environ(), fdEnv), Files: files, }) } ϑΝΠϧσΟεΫϓϦΫλ͸ɺϑΝΠϧ΍ιέοτͳͲΛந৅Խͨ͠࢓૊Έ ϓϩηεΛGPSLͨ͠ࡍ͸ɺ਌ϓϩηεͷϑΝΠϧσΟεΫϦϓλΛҾ͖ܧ͙

·ͱΊ w4FSWFS4UBSUFSͷ࢓૊ΈΛֶͼɺ(PMBOHͰϛχϚϜͰ  ࣮૷ͯ͠Έͨ wγάφϧ΍ϑΝΠϧσΟεΫϦϓλͱ͍ͬͨ֓೦͸ٕज़ॻΛಡ ΜͰ;Ή;Ή͢ΔΑΓɺ࣮૷ͯ͠Έͨ΄͏͕ཧղ͠΍͔ͬͨ͢ w(PMBOH͸ଟ͘ͷ04ͷػೳΛ؆ܿͳίʔυͰѻ͑ΔͨΊɺ  ࣗ෼ͷؔ৺ྖҬΛΑΓ௿͍ϨΠϠʔʹ޿͍͛ͯͨ͘Ίʹ  దͨ͠ݴޠͩ

͋Γ͕ͱ͏͍͟͝·ͨ͠ʂʂ

Golangで学ぶHot deployの仕組み

Golangで学ぶHot deployの仕組み

tsurubee

More Decks by tsurubee

Other Decks in Programming

Featured

Transcript

!UTVSVCFF(.01FQBCP *OD ۝भΠϯϑϥަྲྀษڧձ ,JYT 7PM (PMBOHͰֶͿ )PUEFQMPZͷ࢓૊Έ

(.0ϖύϘɹΠϯϑϥΤϯδχΞ !UTVSVCFF

೥݄(.0ϖύϘೖࣾ ΠϯϑϥΤϯδχΞྺϲ݄

໨࣍ w)PUEFQMPZͱ͸ʁͳͥඞཁ͔ʁ w)PUEFQMPZͷ࢓૊Έ w(PMBOHͰ࣮૷ͯ͠Έͨ

఻͍͑ͨ͜ͱ wμ΢ϯλΠϜθϩΛࢧ͑Δ)PUEFQMPZͷ࢓૊ΈͷҰྫ w(PMBOHΛ௨ͯ͡௿ϨΠϠʔͷٕज़ΛֶͿ͜ͱͰɺ  ΤϯδχΞͱͯ͠ͷ෯͕޿͕ΔͷͰ͸ʁ wٕज़ॻಡΜͰ;Ή;Ή͢ΔΑΓ࣮૷ͯ͠Έͨํ͕ཧղ  ͠΍͍͢

)PUEFQMPZͱ͸ʁ ͳͥඞཁ͔ʁ

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF (PMBOHͷ৔߹ɺ όΠφϦͷ্ॻ͖

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF "QQMJDBUJPO 4UPQ (PMBOHͷ৔߹ɺ

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF "QQMJDBUJPO 4UPQ "QQMJDBUJPO

)PUEFQMPZͱ͸ʁ wΞϓϦέʔγϣϯʹϩδοΫ΍ઃఆ౳ͷมߋΛՃ͑ͨࡍ ʹɺϦΫΤετͷॲཧΛଓ͚ଓ͚ͳ͕Βɺมߋͷ಺༰Λ൓ ө͢ΔͨΊͷखஈ ҰൠతͳσϓϩΠʢ/05)PUEFQMPZʣ 4PVSDFDPEF DIBOHF "QQMJDBUJPO 4UPQ "QQMJDBUJPO

)PUEFQMPZ͕ͳͥඞཁ͔ʁ wΘ͔ͣͳؒͰ΋Քಇ͍ͯ͠ΔαʔϏεΛࢭΊͨ͘ͳ͍ w)PUEFQMPZΛಋೖ͢Δ͜ͱͰɺγεςϜӡ༻ʹ͓͚Δ  อकੑ͕޲্͠ɺਝ଎ͳ։ൃαΠΫϧ͕࣮ݱͰ͖Δ

)PUEFQMPZͷ࢓૊Έ

4FSWFS4UBSUFS w؆୯ʹ)PUEFQMPZͰ͖ΔΑ͏ʹ͢ΔͨΊͷDQBONPEVMF w1FSMͰ࣮૷͞Ε͍ͯΔ͕ɺγάφϧͱ؀ڥม਺Λ࢖ͬͨ  ൚༻ੑͷߴ͍࢓૊ΈͷͨΊɺ͞·͟·ͳݴޠͰར༻Մೳ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ TUBSU@TFSWFS 1BSFOU start_server —-port 8888 —- ./server TFSWFS $IJME

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ TUBSU@TFSWFS 1BSFOU start_server —-port 8888 —- ./server TFSWFS $IJME

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ kill -HUP <master pid> TPDLFU BDDFQU TUBSU@TFSWFS 1BSFOU TFSWFS

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ kill -HUP <master pid> TPDLFU GPSLFYFD TFSWFS $IJME ᶄ4*()61

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ kill -HUP <master pid> TPDLFU ऴྃ͢Δલʹʜ ᶃ৽نϦΫΤεड෇ ɹͷఀࢭ ᶄݱࡏॲཧதͷ

)PUEFQMPZͷ࢓૊Έʢ؆қ൛ʣ TUBSU@TFSWFS 1BSFOU kill -HUP <master pid> TPDLFU GPSLFYFD TFSWFS

࣮૷ͯ͠Έͨ

ϛχϚϜͰ࣮૷ͯ͠Έͨ IUUQTHJUIVCDPNUTVSVCFFHSBDFGVMSFTUBSUHP

࣮૷ϙΠϯτ̍ʙγάφϧϋϯυϥ func waitSignal(l net.Listener) { c := make(chan os.Signal, 1)

࣮૷ϙΠϯτ̍ʙγάφϧϋϯυϥ func waitSignal(l net.Listener) { c := make(chan os.Signal, 1)

࣮૷ϙΠϯτ̎ʙϑΝΠϧσΟεΫϦϓλ func forkExec(l net.TCPListener) (os.Process, error) { progName, _ :=

͋Γ͕ͱ͏͍͟͝·ͨ͠ʂʂ