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҆ఆੑͱ੒௕ੑͷཱ྆ͷͨΊʹ Ԟଜߊ߂(.01FQBCP *OD ٕज़෦5FDI.5( .)"ͷ࣍

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!UBLVNBLVNF͞Μͷl࣍zͷ࿩Λ͠·͢ IUUQTTQFBLFSEFDLDPNUBLVNBLVNFNIBEFEFUBCFTVGBMTFZVOZPOHXPMFOJTJZPV

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.)"ͷ؆қઆ໌ IUUQTTQFBLFSEFDLDPNUBLVNBLVNFNIBEFEFUBCFTVGBMTFZVOZPOHXPMFOJTJZPV

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.)"ͷྑ͍ͱ͜ؾʹͳΔͱ͜ ྑ͍ͱ͜ • DBϚελͷSPoF͕ղܾ • ϑΣΠϧΦʔό༻εΫϦ ϓτΛ޷͖ʹॻ͚Δ • MyISAMͰ΋ಈ͘ • ࠷৽൛͸GTID΋αϙʔ τ ؾʹͳΔͱ͜ • ެࣜͰ͸rpmͷΈఏڙ • MySQL 5.7Ҏ߱ͷαϙʔ τ͕෼͔Βͳ͍ • master/slave͸खಈߏங • mha4managerσʔϞϯ ͕SPoF

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.)"ͷؾʹͳΔͱ͜ ྑ͍ͱ͜ • DBϚελͷSPoF͕ղܾ • ϑΣΠϧΦʔό༻εΫϦ ϓτΛ޷͖ʹॻ͚Δ • MyISAMͰ΋ಈ͘ • ࠷৽൛͸GTID΋αϙʔ τ ؾʹͳΔͱ͜ • ެࣜͰ͸rpmͷΈఏڙ • MySQL 5.7Ҏ߱ͷαϙʔ τ͕෼͔Βͳ͍ • master/slave͸खಈߏங • mha4managerσʔϞϯ ͕SPoF ಛʹؾʹͳΔ

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Ͳ͏ͯ͠ؾʹͳΔͷ͔ • MySQL 5.7͕stableɻ։ൃ൛͸8.0 • MySQL 8.0 + MHAͷಈ࡞͸ະ֬ೝͰɺࠓޙ΋α ϙʔτ͞ΕΔͷ͔෼͔Βͳ͍ • ύοέʔδ͕rpmͷΈɺެࣜϦϙδτϦ͸ແ͍ • ϖύϘ͸CentOSͰͣͬͱ΍ͬͯ͘ʁͱ͍͏ٙ໰

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$FOU04͸ʮ଎ʯʁ • 30days AlbumͷappϩʔϧΛCentOS7ʹ͢Δͨ Ίɺ໿Ұϲ݄͔͚ͯffmpeg.spec͔Β࡞Γ্͛ͨ • ͱ͜Ζ͕ɺDebian͸apt-get install ffmpegͰεο ͱ͍͚Δ... • ੲ͔Βkernel΍ύοέʔδ͕ݹͯۤ͘࿑ͤ͞ΒΕ ͯΔ͚ͲɺNyahʹΑͬͯ։ൃ଎౓͕޲্͠ɺ CentOSͷʮ஗ʯͳͱ͜Ζ͕࿐ݟ͖ͯͨ͠ʁ

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ࢀߟʢ࣌఺ʣ IUUQTFOXJLJQFEJBPSHXJLJ$PNQBSJTPO@PG@-JOVY@EJTUSJCVUJPOT1BDLBHF@NBOBHFNFOU@BOE@JOTUBMMBUJPO %JTUSP "QQSPYJNBUFOVNCFSPG QSFDPNQJMFEQBDLBHFT 1LHGPSNBU 6CVOUV EFC %FCJBO EFC 'FEPSB 31. $FOU04 31. "SDI-JOVY QLHUBSY[ "MQJOF-JOVY BQL

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ʢ࿩Λ໭͠·͢ʣ.)"ͷؾʹͳΔͱ͜ ྑ͍ͱ͜ • DBϚελͷSPoF͕ղܾ • ϑΣΠϧΦʔό༻εΫϦ ϓτΛ޷͖ʹॻ͚Δ • MyISAMͰ΋ಈ͘ • ࠷৽൛͸GTID΋αϙʔ τ ؾʹͳΔͱ͜ • ެࣜͰ͸rpmͷΈఏڙ • MySQL 5.7Ҏ߱ͷαϙʔ τ͕෼͔Βͳ͍ • master/slave͸खಈߏங • mha4managerσʔϞϯ ͕SPoF ಛʹؾʹͳΔ

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.Z42-6UJMJUJFT • percona-toolkitΈ͍ͨͳίϚϯυϥΠϯπʔϧ ηοτ • Python੡ (2.6Ҏ߱Λαϙʔτɺ3.1ܥ͸·ͩ) • RedHat/Debian/macOS/FreeBSD౳Ͱύοέʔδ ೖखՄೳ • https://dev.mysql.com/doc/mysql-utilities/1.6/en/

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.Z42-6UJMJUJFTͷπʔϧηοτ • mysqlauditadmin • mysqlauditgrep • mysqlbinlogmove • mysqlbinlogpurge • mysqlbinlogrotate • mysqldbcompare • mysqldbcopy • mysqldbexport • mysqldbimport • mysqldiff • mysqldiskusage • mysqlfailover • mysqlfrm • mysqlgrants • mysqlindexcheck • mysqlmetagrep • mysqlprocgrep • mysqlreplicate • mysqlrpladmin • mysqlrplcheck • mysqlrplms • mysqlrplshow • mysqlrplsync • mysqlserverclone • mysqlserverinfo • mysqlslavetrx • mysqluc • mysqluserclone

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ʢԣಓʣศརͳNZTRMJOEFYDIFDL $ mysqlindexcheck --server user@host -d db # Source on db003.goope.lan: ... connected. # The following index for table db.a_table contains the clustered index and might be redundant: # CREATE UNIQUE INDEX `a_index` ON `db`.`a_table` (`a_field`) USING BTREE # # DROP/ADD statement: # ALTER TABLE `db`.`a_table` DROP INDEX `a_index`; #

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.Z42-6UJMJUJFTͷπʔϧηοτ • mysqlauditadmin • mysqlauditgrep • mysqlbinlogmove • mysqlbinlogpurge • mysqlbinlogrotate • mysqldbcompare • mysqldbcopy • mysqldbexport • mysqldbimport • mysqldiff • mysqldiskusage • mysqlfailover • mysqlfrm • mysqlgrants • mysqlindexcheck • mysqlmetagrep • mysqlprocgrep • mysqlreplicate • mysqlrpladmin • mysqlrplcheck • mysqlrplms • mysqlrplshow • mysqlrplsync • mysqlserverclone • mysqlserverinfo • mysqlslavetrx • mysqluc • mysqluserclone

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NZTRMGBJMPWFS • MHAΈ͍ͨͳౕɻ΄΅ಉ͜͡ͱ͕Ͱ͖Δ • GTIDϕʔε • MySQL 5.6.5͔Β࢖͑Δ • ͕ɺ5.7͔Βͷํ͕࢖͍΍͍͢
 ʢMySQL 5.7.6͔Βgtid_modeͷON/OFFΛΦϯ ϥΠϯͰ੾ସՄೳʹͳͬͨʣ

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NZTRMGBJMPWFS༻ͷ࠷খNZDOG [mysqld] server_id = 1 log_bin = mysqld-bin log_slave_updates = 1 relay_log = relay-mysqld-bin master_info_repository = TABLE # gtid gtid_mode = ON enforce_gtid_consistency

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NZTRMGBJMPWFSͷσϞ

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͜Ε͔Β΍͍ͬͯ͘͜ͱʢ਺೥͔͔ΔݟࠐΈʣ w .)".Z42-Ͱɺ.Z42-΁ΞοϓάϨʔυΛؤுΔ w .Z42-͔Β(5*%ʹ੾Γସ͑Δ w .)"͔ΒNZTRMGBJMPWFSʹ੾Γସ͑Δ .Z42-Ϛελͷӡ༻Λ҆৺ɾ҆શʹ͍ͯͨ͘͠Ίʹ