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大事なことは全てログファイルに書いてある
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Masaki KOBAYASHI
November 24, 2019
Programming
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大事なことは全てログファイルに書いてある
Masaki KOBAYASHI
November 24, 2019
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Transcript
େࣄͳ͜ͱશͯ ϩάϑΝΠϧ ʹॻ͍ͯ͋Δ .BTBLJ,PCBZBTIJ
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ϩάͱͳʹ͔ ϩάʮߤւࢽʯ MPHCPPL Λޠݯͱ͢Δ༻ޠͰ͋Γɺಈࢺͱͯ͠ ͏߹ʮߤւࢽʹه͢ΔʢߤւهΛऔΔʣʯͱ͍͏ҙຯͰ͋Γɺ ͝Ζʹੜ·Εͨͱ͞Ε͍ͯΔɻ ߤւࢽΛ MPHCPPLͱݺͿΑ͏ʹͳͬͨͷɺધͷΛଌΔͷʹؙଠ MPH ʹҰఆִؒʹ݁ͼͷ͋ΔೄΛׅΓ͚ͯු͔ͨ͜ͱʹ༝དྷɻ
ిࢠ༻ޠͰϩάͱ͍͏ݴ༿͕ΘΕΔΑ͏ʹͳͬͨͷ͝ΖͰɺ σʔλॲཧʹ͓͚ΔΠϕϯτΛମܥతʹه͢Δ͜ͱΛࢦͨ͠ɻ<> [1] https://ja.wikipedia.org/wiki/データログ
͞·͟·ͳϩά ࣌ܥྻ͕͋Δ ॏཁͰ͚ΒΕΔ ϩά͔Β࡞ͬͨϩά
ϩάʹԿ͕ॻ͍ͯ͋Δ͔ BQBDIFͷBDDFTTMPHͷͱ͋Δߦ ଓऀͷ*1ΞυϨε ΞΫηε࣌ ϦΫΤετ )551εςʔλεί ʔυ ϨεϙϯεαΠζ ϦϑΝϥ 6TFS"HFOU
ϓϩάϥϜ͕͍ͭɺͲΜͳೖྗͰಈ࡞͠ɺͦͷ݁ՌԿ͕ى͖͔ͨΘ͔Δ Apache
ϩάͲ͜Ͱ࡞ΒΕ͍ͯΔ͔ apache, passenger mysql job queue sshd, crond... Web Server
AWS, DNS... host machine がある場所では少なくとも1種類以上のログファイルが作られている ※実際には構成要素はもっとありま す
Ͳ͏ͬͯϩάΛݟΔ͔ ϑΝΠϧΛӾཡ͢Δ ˔ DBU ˔ MFTT ˔ NPSF ϩάΛϑΟϧλ͢Δ ˔
IFBE ˔ UBJM ˔ HSFQFHSFQ ˔ UBD ٯॱʹ͢Δ ˔ DVU ˔ TFEBXT ˔ SVCZQFSMQZUIPO 知らないコマンドがあったら 試してみてね
ϩάͷʹ͢Δ ログの種類 (通常, エラー, 警告) ごとに集計する ログの数を単位時間で集計する プログラムの実行頻度を観察する 応用例: 不正アクセスを検知
େࣄͳ͜ͱશͯ ϩάϑΝΠϧ ʹॻ͍ͯ͋Δ ʙ ϩάΛ࡞Δ ʙ
ϩάͷϑϨʔϜϫʔΫΛ׆༻͢Δ
ϩάϑΝΠϧʹେࣄͳ͜ͱΛॻ͖·͠ΐ͏ B͡ΌΘ͔Βͳ͍ Ͱ͖ΔใΛ͠·͠ΐ͏
େࣄͳ͜ͱΛॻ͖͗͢Δͷ/( ύεϫʔυͳͲΛग़ྗ͍͚ͯ͠·ͤΜ ϩά͕୭ʹӾཡ ίϐϖՄೳ ͞ΕΔՄೳੑ͕͋Δ͔Α͘ߟ͑Δ (PPHMFݕࡧͷϩά͕࿙Ӯͨ͠Β
େࣄͳ͜ͱશͯ ϩάϑΝΠϧ ʹॻ͍ͯ͋Δ ϩάා͘ͳ͍Αʂʂʂ