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NewRelicと戦うレガシーPHP
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uzulla
March 16, 2022
Programming
1
1k
NewRelicと戦うレガシーPHP
意識低いテクです
at: NRUG (New Relic User Group) Vol.2
when: 2022/03/16
by: @uzulla
uzulla
March 16, 2022
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Transcript
NewRelicͱઓ͏ ϨΨγʔPHP at: NRUG (New Relic User Group) Vol.2 when:
2022/03/16 by: @uzulla
ࣗݾհ • uzulla • ϑϦʔͷPHPΤϯδχΞ • N+1ࣾͷMՕॴͷݱͰՔಇத • ྫ PR
TIMES ͞Μ
:͜ͷτʔΫಛఆͷاۀʹ͍ͭͯޠ͍ͬͯ·ͤΜ • ࢲݱࡏਐߦͰɺNࣾ x MݱͰՔಇத • աڈͷݱ֮͑ͯ͢Βډͳ͍ • ͨͩ͠ɺ৭ʑͳݱͰࣅ͍ͯΔ͜ͱ͋Δ
ࣗࣾհͱ͔ͳ͍ΜͰએ • PHPerKaigi 2022 • PHPͳํͥͻ • PR TIMESͷਓؒొஃ͠·͢
NewRelic ❤ PHP • ϙϯͱ(ϛυϧΣΞతʹ)͍ΕΔ͚ͩͰಈ͘ • ύοʂͱ֎ͤΔ • ຊ൪ʹೖΕ͓͚ͯΔ΄ͲੑೳྼԽ͍ •
Τϥʔɾྫ֎͕͍͍ײ͡ʹϦΞϧλΠϜूܭ • = ࠷ߴʂ
ࢲͱNewRelic • ׂͱੲ͔Βɺ͔ͭͣΕͣϢʔβʔ • ʮ͓٬༷͕͍Εͯ͘ΕΔ͔ʯ࣍ୈ • ʢ·͋ɺ͝༧ࢉ͋ΔΑͶ…Θ͔Δ…ʣ • ͨͱ͑PR TIMES͞ΜೖΕͯ͘ΕͯΔ
• ʮ͑ͯϥοΩʔʂʂʯ
ࣗෲ()ͱͷ૬ੑͷΑ͞ • ༧ࢉग़ͳ͍͕ɺ͍͍ͬͯͱ͍͏ݱ͋Δ • ͢Δͱɺ֎͍͢͜͠ͱॏཁͰ͢ΑͶ… • PHP + NewRelic֎͍͢͠ʂ •
(ίʔυʹೖΕͳͯ͘ྑ͍ͷͰ) • ISUCONͱ͔ͰɺඵͰ֎ͤΔͷͰ͑Δ
ͯ͞ɺϨΨγʔPHP • ݹ͍ίʔυϕʔεͷPHP • PHP<=7…PHP<=5… • ࠷ۙPHP8ະຬΛΔ͕࣌ͩʢྫ: Laravel9ʣ NewRelicͪΌΜͱಈ͘ʢخʣ
ϨΨγʔPHPͱઓ͏Έ • ੵΈॏͳͬͨෛ࠴ίʔυ • error_reporting, display_errors=offͰݱ࣮ಀආ • ΤϥʔϩάΛݟͯͳ͍ʢ݁ߏଟ͘ͷݱʣ • ͱ͍͏͔ɺϩά͕ࣺͯΒΕ͍ͯΔ
• ͋;ΕΔNotice, WarningΤϥʔ
NewRelicͳΒʂ • ΤϥʔϩάΛಠࣗʹरͬͯूܭͯ͘͠ΕΔʂ • ͳʹ͠ͳͯࣗ͘ಈతʹϝτϦοΫʹ • ελοΫτϨʔε͖ʂ • ಉ͡ΤϥʔΛྨʂ •
Error Inbox͔Βर͚ͬͯͩ͢Ͱվળ͞ΕΔ • ෳͰtail -f͠ͳ͍͍ͯ͘ͷָʂ()
NewRelicΛΘͳ͍߹… • ϩάج൫…fluentd…kibana… • ूܭɾϝτϦΫε… • ϩʔςʔγϣϯ…DiskFull… • ෛՙ… •
༨ͳαʔόʔӡ༻… • etc,etc... େมͩͶ…
ͯ͞ຊ • ʮϦϑΝΫλϦϯά͍ͨ͠ʂʯ • ͦͼཱ͑ͭϨΨγʔ • ʮσουίʔυΛ҆શʹফ͍ͨ͠ʯ • ʮͰɺຊʹࢮΜͰΔͷ͔ͳ…ʯ
ʮͦΕɺNRͰ؆୯ʹऩूͰ͖ΔΑʂʯ
E_USER_WARNING()Λ͏ trigger_error( "This code is NOT DEAD", E_USER_WARNING ); •
https://www.php.net/manual/ja/function.trigger-error.php • ϢʔβʔϨϕϧͷΤϥʔ/ܯࠂ/௨ϝοηʔδΛੜ͢Δ
None
None
Error InboxʹΨϯΨϯ͍ͬͯ͘Δ • (ͪΖΜϑΟϧλͰ͖Δ)
ิɿE_USER_*ͱʁ • PHPʹྫ֎ʹࣅͨ(?) ผͷΤϥʔػߏ͕͋Δ • DBଓࣦഊE_WARNINGͱ͔ɺΑ͘Έ·͢ΑͶʢനʣ • E_USER_* ɺϢʔβʔ͕ൃߦͰ͖ΔΤϥʔܕ •
DEPRECATED, NOTICE, WARNING, ERROR,ͷ4छ • WARN·Ͱ࣮ߦ͕ࢭ·Βͳ͍ (͜ͱ͕׆༻ͷϛι̍) • display_errors=offͰӅͤΔ (͜ͱ͕׆༻ͷϛι̎)
ո͍͠ॴʹೖΕ·͘Δ͚ͩ • ෛՙͰ • ར༻ॴ͕Θ͔Δ • ूܭࣗಈతʹ͞ΕΔ • ຊʹফ͔ͤͨλΠϜϥΠϯͰΘ͔Δ •
શ෦͕Θ͔Δɻͦ͏ɺNewRelicͳΒͶ
͞Βʹݴ͑ • ༷ʑͳཧ༝ͰσϓϩΠͰ͖ͳ͍߹Ͱ… • ී௨ͷPHPͳΒɺຊ൪ʹsshͯ͠ɺ viͯ͠ίʔυΛͿͬ͢·ͰͰ͖Δ ʢίϨͰͬͯΔΘ͚Ͱͳ͍Ͱ͢ʂʂʣ
ͬͱͬͱ׆༻!!!!! • ༷ʑͳ݅ͰಈతʹൃߦͰ͖Δɻ ͨͱ͑ifͰʮ͋Γ͑ͳ͍ݕʯൃՐͰ͖Δ if(!in_array($type, $allow_type_list)){ trigger_error("OOB!!", E_USER_WARNING); }
• REQUEST_URIΛਖ਼نදݱͰҾֻ͚ͬΔͱ͔Α͍ if(preg_match( "|\A/v0.1/old_api/|u", $_SERVER['REQUEST_URI'] ){ trigger_error("deprecated...",E_USER_WARNING); }
• ʮഇࢭ͞Εͨύϥϝλ͕͋Δʯͱ͔ʁ • php.iniͷauto_prepend_fileΛ׆༻͢Δͱָ͔ if(isset($_GET['session_id'])){ trigger_error("OMG!!",E_USER_WARNING); }
ເ͕͕Δʂʂ • (ී௨ͷߦҝͰͳ͍Ͱ͢Ͷɺ͍)
ޙย͚ • શจݕࡧͰফͤOK • (E_USER_WARNINGͱ͔ී௨͔ͭΘͳ͍ͷͰ…) • Ծʹ͍ͬͯͯΤϥʔϩάʹग़Δ͔Β୳ͤΔ͠ɺ ѱӨڹͳ͍
ͱ͍͏͜ͱͰ(?)PHPʹNewRelic࠷ߴʂ • ݹ͍PHPݱͦ͜ɺඞܞ • ͱʹ͔͘ೖΕͯɺͲΜͲΜίʔυվળ • ύϑΥʔϚϯενϡʔχϯά͚ͩͰͳ͍ʂ • (ɺࣗಈతʹ࣮ߦαϯϓϧͯ͠վળ) •
Error Inbox ͚ͩͰศརʂ
Ҏ্ʂ
ҟৗͳཁ • ϨϯαόΈ͍ͨͳͷͰ͏͍ͯ͝΄͍͠ͳ • ʢREST APIΛ͖ͨͨ·͘ΕͰ͖Δ…ʁʣ • ʮdl("newrelic.so")Ͱ͏͍ͨ͝Γ͠ͳ͍͔ͳ…ʯ • ʢҟৗͳཁͩͱཧղ͍ͯ͠·͢ʣ
• ʮPHPʹৄ͍͠ʯNRͷਓ ͱͯ͠Έ͍ͨ͆
ΏΔ͍ئ • (ʮ͘͝Ұൠతͳ͓٬༷ʯʹ͓͍ͯ…ʣ • ʮͰɺ͜Ε͍͘Β͔͔Δͷʁʯ • Ͱɺ༧ࢉ͕ΊͣɺೖΕΒΕͳ͍͜ͱ͕ଟ͍… • ʢࢼࢉ͕͍͠ʣ •
!
I ❤ NewRelic • NRͱPHPΛτϦοΩʔʹͬͯΔਓͱΓ߹͍͍ͨ • ࠷ޙʹɺPHPͳਓPHPerKaigiʹ͝ࢀՃݕ౼͍ͩ͘͞