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オレとmysqldump
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Go Sato
February 21, 2014
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オレとmysqldump
さわると mysqld が落ちるクレイジーなレコードがあったのでそこを除外して mysqldump した話。
mysqldump はオプションが豊富で色々なことができます。
Go Sato
February 21, 2014
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Transcript
ΦϨͱNZTRMEVNQ !J
ࣗݾհ w !J w ΞυςΫܥελʔτΞοϓͷΠϯϑϥΤϯδχΞ
ঢ়گ w ̍ͣͭͷϚελʔεϨʔϒͳϨϓϦέʔγϣϯߏ w εϨʔϒ#BDLVQతͳҐஔ͚ͮͰࢀর͢Β͞Ε͍ͯͳ͍ɻ w ͖·ͬͯຖ˓࣌ʹϚελʔͷ.Z42-͕࠶ىಈ w εϨʔϒ͕͍Δࠓͷ͏ͪʹ ͳΜͱ͔ͤͶɺ͍ͭࢮΜͰ͓͔
͘͠ͳ͍ʜɻ
ͳΜͰ࠶ىಈʁ w *OOP%#%BUBCBTFQBHFDPSSVQUJPOPOEJTLPSBGBJMFE w CBECMPDL͕Ͱ͖ͪΌͬͯDSPOδϣϒ͕ͦ͜ΛᢞΊΔͱ࠶ىಈ͠ ͯΔͬΆ͍ɻ
4MBWFΛ.BTUFSʹ͢Δ͔ʂ w ϚελʔͷEBUBEJS44% w εϨʔϒͷEBUBEJS)%% w ·ͣεϨʔϒʹ44%ΛऔΓ͚ͯͦ͜ΛEBUBEJSʹ͠Α͏ʂ
4MBWFʹͯσʔλίϐʔ )%%44% w ϚελʔͰͳ͘εϨʔϒͰ࡞ۀ͍ͯ͠Δͷʹɺ w DQ .Z42-མͪΔʂ w UBS
.Z42-མͪΔʂ w εϨʔϒʹCBECMPDL͕ʁʁ w EE .Z42-ʜམͪͳ͍ʂʂ
͕ͩ w EEͰίϐʔऴΘΔ͕NZTRME͕ىಈ͠ͳ͍ʂ w JOOPEC@SFDPWFSZ@MFWFMͱΔͱҰԠىಈ͢Δɻ w σʔλ͕͓͔͍͠ͷͰNZTRMEVNQ͔ΒͷϦετΞΛࢼΈΔ Ϛελʔͱಉ͡ݪҼͰNZTRME͕མͪͯ͠·͏ɻ w *OOP%#%BUBCBTFQBHFDPSSVQUJPOPOEJTLPSBGBJMFE
Ή͏ʜ w εϨʔϒ͍ͬͪΌͬͯΔɻ w Ϛελʔ͔ΒNZTRMEVNQͯ͠·ͱͳεϨʔϒΛ࡞Γ͍ͨɻ w ͔͠͠Ϛελʔຖ࠶ىಈ͍ͯ͠ΔͷʹɺՄೳͳͷ͔ʜɻ
༨ஊ w ͦͦ.Z42-ͷϨϓϦͬͯ42-จΛΒͬͯͦΕΛ࣮ߦ ͍ͯ͠Δ͚ͩͷͣɻ w ͳΜͰεϨʔϒ·ͰϚελʔͱಉ͡յΕํΛʁ w *OOP%#%BUBCBTFQBHFDPSSVQUJPOPOEJTLPSBGBJMFE w )%%ʹෆྑηΫλൃੜPSϑΝΠϧγεςϜ্ͰCBECMPDL
ൃੜతͳͷͩΑͶʁ w όάʁʢͩͱউखʹࢥ͍ͬͯ·͕͢ະ֬ೝˍະݕূʣ
ͱΓ͋͑ͣʂ w μϯϓ GSPNϚελʔ ˍΠϯϙʔτ UPεϨʔϒ w Γ్தͰࢭ·Δɻ w
Ͳ͜·ͰΠϯϙʔτͰ͖͍ͯΔ͔Λ֬ೝ w JE·ͰೖͬͯΔɻ
☓JEʁ w ಈ͖తʹɺΞΧϯϨίʔυΛ͞ΘΔͱམͪͯΔ͍͘͞ͷͰʜ w TFMFDUʜXIFSFJE0,ɹ͜ΕͰམͪʂʜɹ͓ʁ w TFMFDUʜXIFSFJE0,ɹ͓ʜ w TFMFDUʜXIFSFJE0,ɹ͓͓ʜ w
TFMFDUʜXIFSFJE0,ɹ͓͓͓ʜʁ w TFMFDUʜXIFSFJE0,ɹ͓͓͓͓ʜʁ w TFMFDUʜXIFSFJE0,ɹ͓͓͓͓͓ʜʁʂ w TFMFDUʜXIFSFJE0,ɹ͓ʜɺ w TFMFDUʜXIFSFJEམͪͨʂʂ
☓JEʂ w ͜ͷߦ͚ͩͬ͢ͱͯ͠μϯϓˍΠϯϙʔτ͢Ε ͍͍Μ͡ΌͶʁ w Ͱ͖Δͷʁ w Φϓγϣϯ͋ͬͨʂ w NZTRMEVNQʜlXIFSF݅z
w NZTRMEVNQʜlXIFSFJE
͕͔ͩ͠͠ʂ w མͪͨΝΝΝʂʂ w XIZ
͜ΕԿͷΦϓγϣϯʁ w FYUFOEFEJOTFSU
FYUFOEFEJOTFSU w ΠϯαʔτΛͪ·ͪ·ΔΜ͡Όͳͯ͘ɺυαͬͱΔɺΈ͍ͨͳΦϓγϣϯɻ w .Z42-Ҏ߱ɺPQUΦϓγϣϯσϑΥϧτͰΦϯʹͳ͍ͬͯΔɻ͜Ε͕ΦϯͩͱҎԼશ෦ ͕ΦϯʹͳΔɻ • --add-drop-table • --add-locks
• --create-options • --disable-keys • --extended-insert • --lock-tables • --quick • --set-charset
ͻΐͬͱͯ͠ w XIFSFͰ̍ߦ͚ͩআ͍ͯɺ͜ͷΦϓγϣϯͷ ͍ͤͰμϝʹͳΔͷͰʁ
ࢼ͠ʹ w ͍͋͠ҎԼͷϨίʔυ͚ͩআ͍ͯEVNQͯ͠ ΈΔɻ w JEɹʙɹJE w μϯϓͰ͖ͨɻ
˓˓ͷൣғΛআ֎͢Δ Φϓγϣϯ w XIFSFJEOPU#&58&&/BOE
• mysqldump -uroot --databases σʔλϕʔε໊ --ignore-table=σʔλϕʔε໊.ςʔϒϧ໊ --single-transaction --master-data=1 --events --skip-extended-insert
--where="id not BETWEEN '38565742' and '38565749'" —force | gzip | ssh root@IPΞυϨε 'zcat | mysql -uroot'
༨ஊ w ͳ͔ͥskip-quickΦϓγϣϯ·Ͱ͚ͯ͠ ·ͬͯεϫοϓ͕͋;Εͯ00.,JMMFS͕ൃಈ͠ ͯ͠·ͬͨ͜ͱ͋Γ·ͨ͠ɻ w ͜ΕΛ͚ΔͱϝϞϦόοϑΝ͕ΦϑʹͳΓ·͢ɻ
·ͱΊ w NZTRMEVNQʹ৭ʑͳΦϓγϣϯ͕ɻ͋Γ͕ ͨ͘׆༻͍͖ͤͯͨͩ͞·͠ΐ͏ʂ
͓ΘΓ