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DB移行を支える技術
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onigra
October 25, 2013
Technology
12
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DB移行を支える技術
MySQL Casual Vol5 LT資料
http://www.zusaar.com/event/1086003
onigra
October 25, 2013
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Transcript
MySQLͷҠߦΛࢧ͑Δٕज़ 1310݄25༵ۚ
Yudai @nekogeruge_987 WEBܥاۀۈ DB(RDBMS, NoSQL) Ruby Chef Fluentd https://github.com/onigra 1310݄25༵ۚ
ࠓͷ݄̍ʹ IBM DB2͔Β MySQL5.5ʹ Ҡߦͨ͠Λ͠·͢ 1310݄25༵ۚ
نײ 1310݄25༵ۚ
allཧ εΩʔϚ 13 ςʔϒϧ 330 ૯Ϩίʔυ 321,906,470 1ςʔϒϧ͋ͨΓͷϨίʔυ 975,474 Ұ൪Ϩίʔυ͕ଟ͍ςʔϒϧ
18,054,990 13ӡ༻͞ΕͯΔ جװγεςϜɺαʔϏεܥDB܈ JavaɺPHPɺVB6ͱ͔… euc-jp -> utf-8 1310݄25༵ۚ
݁Ռɺϯԯԁͷ ܦඅൃੜΛ્ࢭ 1310݄25༵ۚ
۩ମతͳ ࡞ۀ༰ 1310݄25༵ۚ
• DB2ͷϨίʔυΛCSVΤΫεϙʔτ • MySQLLOAD INFILE • /var/lib/mysql ΛslaveͷαʔόҠͯ͠෮ݩʢColdBackupʣ • ϨϓϦέʔγϣϯઃఆ
• FederatedΤϯδϯΛ༻͢ΔಛघͳϨϓϦέʔγϣϯͷߏங (MySQL -> DB2 ͷϨϓϦέʔγϣϯΛ͢Δඞཁ͕͋ͬͨͨΊ) • ͜ΕΒΛShellScript(bash)ͷόονͰߦ͏ 1310݄25༵ۚ
Time Limit 4࣌ؒ ※ΦϑϥΠϯϝϯς8࣌ؒͷ͏ͪ લ4࣌ؒͰྃ͢Δඞཁ͕͋Δ 1310݄25༵ۚ
ରࡦ 1310݄25༵ۚ
1. LOAD࣌ؒͷॖΛਤΔ 1310݄25༵ۚ
•Bulk Insert < LOAD INFILE < Cold Backup •Slow-logɺBin-log ͳͲࢭΊΕΔϩάࢭΊΔ
•INDEXΛDROP -> LOAD -> INDEXషΔ (ςʔϒϧʹΑΓૣ͔ͬͨΓɺషͬͨ··ͱ ͦΜͳʹ͕ࠩແ͔ͬͨΓ) • csvετϨʔδΤϯδϯΛ͏ͱͪΐͬͺΒ͍͚͠Ͳ͏ ·͍͔͘ͳ͔ͬͨʢΓ͔ͨѱ͔ͬͨͷ͔ʣ 1310݄25༵ۚ
͜ͷลάάͬͨΒ ׂͱग़ͯ͘Δ͕ɺ શମͷ࡞ۀͰݟΔͱ େ͖ͳॖʹ ͳΒͳ͔ͬͨ 1310݄25༵ۚ
2.δϣϒϑϩʔͷ࠷దԽ ʢJenkinsͷ׆༻ʣ 1310݄25༵ۚ
1310݄25༵ۚ
Jenkins Build Flow Plugin https://wiki.jenkins-ci.org/display/JENKINS/Build+Flow+Plugin 1310݄25༵ۚ
Build Pipeline Plugin͕ڧྗʹͳͬͨײ͡ Job FlowΛGroovyͰॻ͚Δ ฒྻ࣮ߦ(Parallel) ϦτϥΠ(Retry) ྫ֎ͷัଊ(guard / rescue)
ͳͲͷػೳΛඋ͍͑ͯΔ 1310݄25༵ۚ
࠷্Ґ parallel ( { build(“order” ) }, { build(“user”) },
{ build(“master”) } ) user build (“export”) build (“rsync”) build (“load”) build (“mysqld stop”) build (“rsync”) parallel ( { build(“master mysqld start”) }, { build(“slave mysqld start”) } ) 1310݄25༵ۚ
ͪͳΈʹɺ͜ͷҊ݅ͷޙ Tivoliͱ͔JP1ͱ͔Γ·ͨ͠ ·ͩۀքྺͰݴ͏ͱएखͳΜͰ… 1310݄25༵ۚ
σʔλҠߦΛCI͢ΔΑ͏ͳײ͡Ͱ ຖ·Θ͢ ࠷ऴతʹ1ΫϦοΫͰҠߦ͕ྃ͢ΔBuild FlowΛ࡞ ↓ ͦΕΛຖ࣮ߦ͠ɺԿճޭͤ͞Δ ↓ Ҡߦຊ൪ʹର͢Δڪා৺Λແ͘͢ 1310݄25༵ۚ
̍ΫϦοΫσʔλҠߦ ʙ͍ͭ·ͰखͰDBҠߦͯ͠ΔΜͰ͔͢ʁʙ ※ @ryuzee͞ΜͷΦϚʔδϡͰ͢ http://www.slideshare.net/Ryuzee/devsumia 1310݄25༵ۚ
શࣗಈԽͰ͖͔ͨ ۃͳɺ࡞ۀऀ͕͍ͳ͍ʢԿ͠ͳ͍ʣ σʔλҠߦͰ͖Δؾ͕͢Δ 1310݄25༵ۚ
༨ஊ δϣϒεέδϡʔϥʔͷΦʔϓϯιʔειϑτΣΞͬͯΠέͯΔͷແ͍ΜͰ͔͢Ͷʁ δϣϒεέδϡʔϥʔͬͯΤϯλʔϓϥΠζք۾Ͱॏๅ͞Εͯͦ͏͔ͩΒ WEBͷਓୡڵຯແ͍ʁ DWHͱ͔݁ߏ͏ͱࢥ͏ΜͰ͚͢Ͳ jobschedulerͳΔάάϥϏϦςΟͷ͍ΦʔϓϯιʔεͷιϑτΣΞ͚͋ͬͨͲɺ ใগͳ͍ 1310݄25༵ۚ
͜ΕͰ·ͩؒʹ߹Θͳ͍ 1310݄25༵ۚ
3. σʔλసૹ࣌ؒͷॖ (Cold Backup) 1310݄25༵ۚ
/var/lib/mysql ԼͷશϑΝΠϧΛ ฒྻͰrsync͢Δ http://qiita.com/nekogeruge_987/ items/ed1bd8704b25b1f509ec 1310݄25༵ۚ
ҙ σΟϨΫτϦߏΛઌʹίϐʔઌʹίϐʔ͓͔ͯ͠ͳ͍ͱrsync͕͚͜Δ ωοτϫʔΫͷଳҬͷଠ͞ʹґଘ͍ͯ͠ΔͷͰɺଳҬ͕ڱ͍ͱ͋·ΓޮՌ͕ແ͍ ϑΝΠϧͷϓϩηεΛىಈ͢ΔͨΊɺ100ສݸϑΝΠϧ͕͋Δͱ100ສϓϩηε͕ͨͪ͋Δ ྃޙʹී௨ͷrsyncΛ࣮ߦ͠ɺ͕ࠩແ͍͔ΛνΣοΫ͢Δͱϕλʔ 1310݄25༵ۚ
1࣌ؒఔ͔͔ͬͯͨͷ͕ 20ఔͰྃ͢ΔΑ͏ʹ ͳΓ·ͨ͠ 1310݄25༵ۚ
൪֎ɿࠓࢥ͏ͱΓ͔ͨͬͨ͜ͱ ShellScripͷUnitTestΛॻ͘ 1310݄25༵ۚ
࣌ShellScript΄΅ॻ͍ͨࣄແ͍ ͍ͭͰʹςετॻ͍ͨࣄແ͍ ࣄલͷҠߦͰΘΕͯͨίʔυΛ͍ճ͢ ࣌ؒແ͔ͬͨͷͰແઅૢʹScript͕૿͍͑ͯ͘ ࠓshunit2ͱ͍͏ShellScriptͷTestingFrameworkͰςετॻ͍ͯΔ https://speakerdeck.com/yudaisuzuki/shell-script-testing-framework-shunit2 1310݄25༵ۚ
Thanks!! https://twitter.com/nekogeruge_987 http://onigra.github.io/ 1310݄25༵ۚ