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超Redisマスターになる話
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mickey
January 22, 2018
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超Redisマスターになる話
mickey
January 22, 2018
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Transcript
ࡾπݡҰ(.01FQBCP *OD 5FDI.5( 3FEJTϚελʔʹͳΔ
ΠϯϑϥΤϯδχΞ .JDLFZ ٕज़෦ΠϯϑϥνʔϜ
͍֮͑ͯ·͔͢ʜ
3FEJTϚελʔʹͳΕͨͰ͠ΐ͏͔ʜʁ
3FEJTϚελʔʹͳΕͨͰ͠ΐ͏͔ʜʁ wͰɺॳΓ͔ͨͬͨ3FEJTΛ)"ʹ͢Δ͜ͱͰ͖ͨͱࢥ͏Αʜ
3FEJTΛԽ͢Δ
3FEJT4FOUJOFMͬͯʁ w3FEJT4FOUJOFMQSPWJEFTIJHIBWBJMBCJMJUZGPS3FEJT
4FOUJOFMΛߏங͍ͯ͘͠
ߏ . 4̍ 3 4 3 4 w.3FEJTͷ.BTUFS w3ɺ3FEJTͷ 3FQMJDB
4MBWF w4ɺɺ4FOUJOFM
ߏ . 4̍ 3 4 3 4 w4FOUJOFMɺ༻ҙ͢Δඞ ཁ͕͋Γ·͢
ߏ . 4̍ 3 4 wωοτϫʔΫোʹΑΓεϐ ϦοτϒϨΠϯ͕ൃੜͨ͠ͱ ͖ɺΫϥΠΞϯτͷϚελʔ ͷॻ͖ࠐΈΛ͛ͳ͍͔Β wͩͱ͛Δͷͩɺͱ͍͏
ओுʹ͍ͭͯݕূΛਐΊͭ ͭ֬ೝ͍͖ͯ͠·͠ΐ͏ . 4̍ . 4
4FOUJOFMͷઃఆ bind 0.0.0.0 port 26379 # Ϋϥελͷ໊લɺࢹ͢ΔMasterͷIPͱportɺquorum sentinel monitor mymaster
10.200.0.149 6379 2 # master͕Ԡ͠ͳ͘ͳ͔ͬͯΒোͱஅ͢Δ·Ͱͷ࣌ؒ sentinel down-after-milliseconds mymaster 5000
RVPSVNʹ͍ͭͯ w4FOUJOFM.BTUFS͕ࢮ͵ͱɺओ؍తͳࢮɺTEPXOΛଞͷ4FOUJOFMʹใࠂ͢Δ w4FOUJOFMɺTEPXO͕RVPSVNͷ͚ͩू·Δͱɺ.BTUFS͕٬؍తʹࢮΜͩɺ PEPXOͩͱஅ͢Δ wͦ͏͢Δͱɺ୭͕ϑΣΠϧΦʔόʔΛ୲͢Δ͔ɺ୭Λ.BTUFSʹ͢Δ͔Λܾ ΊͯϑΣΠϧΦʔόʔΛ։࢝͢Δ
ಈ࡞ݕূ
.BTUFSͷো . 4̍ 3 4 3 4 wఆ͢Δڍಈ w4ͱ4͕.ͷTEPXΛݕ w4ͱ4͕.ΛPEPXOͱ͢Δ
wϑΣΠϧΦʔόʔΛ։࢝͠4ͱ4 ͷͲͪΒ͔͕.BTUFSʹ
.BTUFSͷো
.BTUFSͷݽཱ . 4̍ 3 4 3 4 wఆ͢Δڍಈ w4.͕ੜ͖͍ͯΔͱࢥ͍ͬͯΔ w4ɺ4.͕ࢮΜͩͱࢥ͍ͬͯ
Δ w..BTUFSͷ·· w3ɺ3ͷͲͪΒ͔͕.BTUFSʹ
.BTUFSͷݽཱ . 4̍ 3 4 3 4 w.ʹॻ͖ࠐ·ΕͨΒͲ͏͢ΕΑ ͍Ͱ͠ΐ͏ʁ $MJFOU
.BTUFSͷݽཱ
͜͏ͳΒͳ͍Α͏ʹ͢Δʹʜʁ # slave͕1Ҏ্ɺੜ͖͍ͯͳ͍ͱMasterʹॻ͖ࠐΊͳ͘͢Δ min-slaves-to-write 1 # slave͕࠷ޙʹԠ͔ͯ͠Βͷ࣌ؒ min-slaves-max-lag 10
.BTUFSͱ4MBWFͷμϯ . 4̍ 3 4 3 4 wఆ͢Δڍಈ w4.͕PEPXOͩͱஅ͢Δͨ ΊʹඞཁͳRVPSVNΛ֬อͰ͖ͳ͍
ͷͰԿ͓͖ͳ͍
.BTUFSͱ4MBWFͷμϯ
·ͱΊ
·ͱΊ w3FEJT4FOUJOFMͰߏΛΉʹҎ্ͷ4FOUJOFM͕ඞཁ wεϐϦοτϒϨΠϯ͜Θ͍ wಉ࣌ʹࢮ͵ͱͲ͏͠ΐ͏ͳ͍