cobra は便利になっている

2022年3-shake SRE Tech Talk #4
https://3-shake.connpass.com/event/253028/

Transcript

1. 
   TIBLF
   43&
   5FDI
   5BML
   
   !OXJJ[P DPCSB
   ͸ศརʹͳ͍ͬͯΔ TQGDPCSB
   ࠷৽ػೳٴͼӡ༻࣌ʹޮ͘ػೳ
2. ૣ଎Ͱ͕͢
   օ͞ΜɺࣗಈԽ 
 ͯ͠·͔͢ʁ ୀ۶ͳ͜ͱ͸1ZUIPOʹ΍ΒͤΑ͏
   ୈ൛
   ʕϊϯϓϩάϥϚʔʹ΋Ͱ͖ΔࣗಈԽॲཧϓϩάϥϛϯά
   
3. ๻΋ࣗಈԽ͕޷͖Ͱ͢
4. ͔͠͠ɺෳࡶʹൃୡͨ͠ 
 ࣗಈԽ͸ࣗવͷౖΓͱ 
 ۠ผ͕͔ͭͳ͍
5. ࣗಈԽʹඞཁͳͷ͸டং
6. ίϚϯυϥΠϯπʔϧʹ͍ͭͯޠΔͱ͖ʹ๻ͷޠΔ͜ͱ #yapcasia
 https://speakerdeck.com/tcnksm/komandorainturunituiteyu-rutokinipu-falseyu-rukoto-number-yapcasia $-*
   5PPMΛॻ͘ͱ͖ϨϏϡʔͰ໎ͬͨ࣌ʹ͸ 
 ΄΅ɺඞͣͪ͜ΒͷυΩϡϝϯτΛݟ͍ͯ·͢ɻ 
 πʔϧͷػೳΑΓͪ͜ΒʹཔΕʂʂʂ
7. ίϚϯυϥΠϯπʔϧʹ͍ͭͯޠΔͱ͖ʹ๻ͷޠΔ͜ͱΑΓҾ༻ w ίϚϯυϥΠϯπʔϧʹ͓͍ͯॏཁͳϙΠϯτ 
 
   ͭͷ͜ͱʹूத͍ͯ͠ 
 
   ௚ײతʹ࢖͑Δ 
 
   ଞͷπʔϧͱ࿈ܞͰ͖Δ 
 
   ར༻Λॿ͚ͯ͘ΕΔ 
 
   ద੾ͳσϑΥϧτ஋Λ࣋ͪઃఆ΋Ͱ͖Δ 
 
   ۤ௧ͳ͘ΠϯετʔϧͰ͖Δ 
 
   ͙͢ʹվमͰ͖Δ  ίϚϯυϥΠϯπʔϧʹ͍ͭͯޠΔͱ͖ʹ๻ͷޠΔ͜ͱ #yapcasia
 https://speakerdeck.com/tcnksm/komandorainturunituiteyu-rutokinipu-falseyu-rukoto-number-yapcasia w ͍͔ʹzྑ͍z$-*πʔϧΛ࡞Γ࢝ΊΔ͔ʁʹ͍ͭͯͷͭͷखॱ 
 
   ͲΜͳπʔϧΛ࡞Δ͔ߟ͑Δ 
 
   ݴޠΛબͿ 
 
   3&"%/&NE
   Λॻ͘ 
 
   ߴ଎ʹϓϩτλΠϓΛ࡞Δ
8. ࢲͷࠢͷ੤໿📄
   w 4IFMM
   4DSJQU
   ͸ߦ͙Β͍·Ͱ
   w ͦΕҎ֎͸(PMBOH
   Ͱ։ൃ 
 🔔ϥΠϒϥϦ΍πʔϧ͕ͳ͍ͳͲͰͦͷબ୒ࢶҎ֎ͩͱ 
 ɹࣗಈԽʹͱͯ΋޻਺͕͔͔Δ৔߹ʹ͸ଞͷݴޠΛ࢖͏ 
 🔔(PݴޠͰͷϝϦοτ͸͍͔ͭ͋͘Γ·͕͢zۤ௧ͳ͘ΠϯετʔϧͰ͖ͯར༻͠ଓ͚қ͍z 
 ɹίϚϯυϥΠϯπʔϧΛॻ͘͜ͱʹ޲͍͍ͯΔͱࢥ͍·͕͢ຊൃදͰ͸औΓѻΘͳ͍ 
 🔔Α͍(PͷίʔυΛॻ͘ʹ͸ʮ(Pʹೖͬͯ͸(Pʹै͑ʯͳͲͷΑ͍ࢿྉ͕͋ΔͷͰ 
 ɹຊൃදͰ͸औΓѻΘͳ͍ͷͰͥͻɺಡΜͰΈͯ΄͍͠Ͱ͢ɻ 
 ɹ
9. ͷ ࿩ʹ΍ͬͱಥೖ͢Δ -5ͳͷʹ લஔ͖Ͱ͋Δ
10. TQGDPCSB
    ͱ͸ʁ w (PʹΑΔ੩తαΠτδΣωϨʔλʔͰ͋ΔIVHP
    ͷ ։ൃऀͱͯ͠஌ΒΕΔɻTQGࢯʹΑΔ$-*Λ࡞੒ ͢ΔҝͷπʔϧͰ͢ɻ  IUUQTHJUIVCDPNTQGDPCSB $ go mod init SRETT04 $ cobra-cli init ਽ܗͷ࡞੒ . ᵓ── LICENSE ᵓ── README.md ᵓ── cmd │ └── root.go ᵓ── go.mod ᵓ── go.sum └── main.go 1 directory, 6 fi les IUUQTTZVNIBUFOBCMPHDPNFOUSZ (PMBOH
    Ͱ$-*
    5PPM
    Λ࡞Δ࣌ʹ͸$PCSBΛ࢖͍͕ͪ DPCSB
    ͔ΒDPCSBDMJʹมߋ͠·ͨ͠ IUUQTHJUIVCDPNTQGDPCSBSFMFBTFTUBHW
11. TQGDPCSB
    ͱ͸ʁ w ༷ʑͳػೳ͕͋Γ$PCSB
    Λར༻͢Δͱ 
 αϒίϚϯυͷݟ௨͠ͳͲ΋ྑ͘ͳΓ 
 ·ͨɺIFMQ
    ΁ͷ௥Ճ΋ࣗಈͰߦͬͯ͘ΕΔ  IUUQTHJUIVCDPNTQGDPCSB $ cobra-cli add get $ cobra-cli add create αϒίϚϯυͷ௥Ճ . ᵓ── LICENSE ᵓ── README.md ᵓ── cmd │ ᵓ── create.go │ ᵓ── get.go │ └── root.go ᵓ── go.mod ᵓ── go.sum └── main.go ϑϥάͷ௥ՃͳͲ͸ࣗલͰ࣮૷͕ඞཁ 
 
    JOJU ಺ͰϑϥάΛఆٛ
    
    ࣮ࡍͷॲཧͰϑϥάΛࢀর HFUHP΍DSFBUFHP
    ʹ 
 ֤ػೳΛ࣮૷Λ͢Ε͹ྑ͍ 🔔-POH
    )FMQ
    ʹ 
 ɹ(JUIVC
    3FQPTJUPSZ
    ͸ 
 ɹॻ͍͓͍ͯͯ΄͍͠ 
 ɹະདྷͷӡ༻Λ͢Δ୭͔ͷͨΊʹ IUUQTHJUIVCDPNTQGDPCSBCMPCNBJOVTFS@HVJEFNE
12. ͷศརػೳͷ ࿩ʹ΍ͬͱಥೖ͢Δ -5ͳͷʹ ຊ୊Ͱ͋Δ
13. ᶃ
    ࣗಈิ׬  IUUQTTZVNIBUFOBCMPHDPNFOUSZ (Pݴޠͷ$-*࡞੒πʔϧͰ͋ΔDPCSB
    ͷγΣϧิ׬ͷੜ੒͕͋·Γʹ΋؆୯ $ [command] completion fi sh fi TI
    ิ׬ϑΝΠϧ $ [command] completion [bash|zsh| fi sh|powershell] CBTIc[TIc fi TIc QPXFSTIFMM
    
 ิ׬ϑΝΠϧ ࣗಈิ׬ϑΝΠϧ͕؆୯ʹੜ੒Ͱ͖ΔΑ͏ʹͳΓ·ͨ͠ 
 ରԠ͍ͯ͠Δͷ͸CBTIc[TIcGJTIcQPXFSTIFMM
    ʹରԠ͍ͯ͠Δ
14. ᶄ
    (SPVQ
    GMBHT
    
    ػೳʹ͍ͭͯ w 'MBH
    Λ૬ޓʹඞཁͳΦϓγϣϯΛද͢৔߹  rootCmd.Flags().StringVarP(&u, "username", "u", "", "Username (required if password is set)") rootCmd.Flags().StringVarP(&pw, "password", "p", "", "Password (required if username is set)") rootCmd.MarkFlagsRequiredTogether("username", "password") IUUQTHJUIVCDPNTQGDPCSBCMPCNBJOVTFS@HVJEFNE fl BHHSPVQT Flag Groups rootCmd.Flags().BoolVar(&u, "json", false, "Output in JSON") rootCmd.Flags().BoolVar(&pw, "yaml", false, "Output in YAML") rootCmd.MarkFlagsMutuallyExclusive("json", "yaml") w 'MBH
    Λ૬ޓʹഉଞతͳΦϓγϣϯΛද͢৔߹ 'MBH
    ʹάϧʔϓػೳ௥Ճ͢Δͷ΋؆୯ʹ࣮ݱͰ͖Δ ⭐ӡ༻࣌ʹґཔ͢Δ࣌ʹָ 
 ɹԿ͕଍Γͳ͍͔ࣔ͢ͷେมʜ
15. ᶅ
    ΞΫςΟϒϔϧϓ w #BTI
    ͱ[TIͷΈʹରԠ͍ͯ͠Δ
    ɻUBC
    Λԡ͍ͯ͠ΔλΠϛϯάͰ 
 ର࿩తʹϔϧϓΛग़͢ػೳ  IUUQTHJUIVCDPNTQGDPCSBCMPCNBJOBDUJWF@IFMQNE ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { var comps []string if len(args) == 0 { comps = cobra.AppendActiveHelp(comps, "You must choose a name for the repo you are adding") } else if len(args) == 1 { comps = cobra.AppendActiveHelp(comps, "You must specify the URL for the repo you are adding") } else { comps = cobra.AppendActiveHelp(comps, "This command does not take any more arguments") } return comps, cobra.ShellCompDirectiveNoFileComp }, bash-5.1$ helm repo add [tab] You must choose a name for the repo you are adding bash-5.1$ helm repo add grafana [tab] You must specify the URL for the repo you are adding bash-5.1$ helm repo add grafana https://grafana.github.io/helm-charts [tab] This command does not take any more arguments ⭐
    ର࿩࣌ʹָʹͳΔͷͰخ͍͠ɹ
    fi TI
    ར༻ऀ͸Ըܙʹ༬͔Εࢮ
16. ׬