Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Gohperに逆らうとどうなるのか
Search
Seiji Takahashi
April 23, 2016
Technology
3
4.2k
Gohperに逆らうとどうなるのか
Go Conference Spring 2016
Seiji Takahashi
April 23, 2016
Tweet
Share
More Decks by Seiji Takahashi
See All by Seiji Takahashi
Go Backends for frontends with GraphQL and gRPC
timakin
6
3.8k
Design Pattern for Image and Text Composition in Go
timakin
5
6.6k
Golang API Testing the HARD way
timakin
13
6.5k
Head First Golang Image Package
timakin
2
10k
React Native Beyond Prototype
timakin
2
1.6k
Performance Optimization on Google AppEngine
timakin
5
6.2k
testcache.pdf
timakin
1
140
How Go cache
timakin
1
74
How Go cache tests
timakin
1
3k
Other Decks in Technology
See All in Technology
エンジニアリング価値を黒字化する バリューベース戦略を用いた 技術戦略策定の道のり
kzkmaeda
6
2.5k
入門 PEAK Threat Hunting @SECCON
odorusatoshi
0
150
「正しく」失敗できる チームの作り方 〜リアルな事例から紐解く失敗を恐れない組織とは〜 / A team that can fail correctly
i35_267
4
850
クラウド食堂とは?
hiyanger
0
110
2/18 Making Security Scale: メルカリが考えるセキュリティ戦略 - Coincheck x LayerX x Mercari
jsonf
0
170
【5分でわかる】セーフィー エンジニア向け会社紹介
safie_recruit
0
18k
Visualize, Visualize, Visualize and rclone
tomoaki0705
9
81k
Amazon Aurora のバージョンアップ手法について
smt7174
2
140
Cracking the Coding Interview 6th Edition
gdplabs
14
28k
依存パッケージの更新はコツコツが勝つコツ! / phpcon_nagoya2025
blue_goheimochi
3
210
急成長する企業で作った、エンジニアが輝ける制度/ 20250227 Rinto Ikenoue
shift_evolve
0
120
ウォンテッドリーのデータパイプラインを支える ETL のための analytics, rds-exporter / analytics, rds-exporter for ETL to support Wantedly's data pipeline
unblee
0
120
Featured
See All Featured
The Power of CSS Pseudo Elements
geoffreycrofte
75
5.5k
Intergalactic Javascript Robots from Outer Space
tanoku
270
27k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Visualization
eitanlees
146
15k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
7
640
Why Our Code Smells
bkeepers
PRO
336
57k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
175
52k
The World Runs on Bad Software
bkeepers
PRO
67
11k
Bash Introduction
62gerente
611
210k
How to train your dragon (web standard)
notwaldorf
91
5.9k
Automating Front-end Workflow
addyosmani
1368
200k
Transcript
Gopherʹ ٯΒ͏ͱ Ͳ͏ͳΔͷ͔ timakin / @__timakin__ Go Conference 2016 Spring
ࣗݾհ • ߴڮೋ / ͪ·͖Μ • Github: timakin • Twitter:
@__timakin__ • Gmail:
[email protected]
• hatena: timakin.log • ϓϥΠϕʔτͰGoͰ࡞ͬͨCLIπʔϧ • timakin/ts - teckstack (ςοΫܥͷใऩूCLI) • timakin/octop - octopatrol (github tracking CLI)
ΞδΣϯμ • ʮgo-lxcΛ௨࣮ͯ͠ײͨ͠Golangͷྑ͞ʯ͕ ਖ਼ࣜͰ͢ɻ • LXCपΓͷ͠·͢ɻ • CLIπʔϧΛGoͰॻ͖ͨ͠ΒߴԽͨ͠ ͠Α͏ͱࢥ͚ͬͨͲ࣌ؒͳ͛͞ͳͷͰࠓ…
Կ͕ىͬͨ͜ͷ͔ • DockerΫϩʔϯΛ࡞ͬͯͨ • YAPC::Asia Tokyo 2015ͰʮGitͷ࡞Γํʯͱ͍͏ LTʹײԽ͞Εͯɺ”࣮͕ͦ͠͏ͩ” ͱࢥ͏ͷΛϓν࣮ͯ͠ΈΑ͏ͱߟ͑ͨɻ •
खݩͰͪΌΜͱதΘ͔ͬͯͦ͏Ͱ Θ͔ͬͯͳ͍πʔϧ… • DockerͩͶʂ
Կ͕ىͬͨ͜ͷ͔ • p8952/bockerͱ͍͏shell100ߦͷ࣮͕͋Δ • ͜ΕΛRubyͰͬͨΒՄಡੑ͕͍͋ͬͯ ͍ͷͰɻʢԿΑ͘ͳ͔ͬͨʣ • Dockerͱ͍͏͔LXCΛϥοϓͨ͠timakin/ Oceanusͱ͍͏ͷΛॻ͖·ͨ͠ɻ
LXC(Linux Containers)ͷ֓ཁ • ίϯςφԾԽʹඞཁͳchrootcgroupɺnamespaceͷׂΛ ѻ͏APIΛఏڙ͢Δٕज़Ͱ͢ɻ • ԾϚγϯΛ࡞ΔͷͰͳ͘ɺϗετOSͷϦιʔεΛׂɺཧ ͢Δ͜ͱͰִۭؒΛ࡞Γग़͠·͢ɻϋʔυΣΞͷγϛϡϨʔγϣ ϯ͕ඞཁͳ͍ͨΊɺԾԽʹΑΔΦʔόʔϔου͕গͳ͍Ͱ͢ɻ •
v0.8ҎલͷDockerLXCܦ༝ͰҰ෦ϦιʔεཧΛ͍ͯ͠·ͨ͠ɻ • DockerϦιʔεׂͦ͏Ͱ͕͢ɺΞϓϦέʔγϣϯͷσϓϩ ΠڥΠϝʔδͷόʔδϣχϯάʹओ؟Λஔ͍͍ͯΔͰɺࠩҟ ͕͋Δͷͩͱ͍͏ҹͰ͢ɻ
go-lxcͷ֓ཁ • Go Bindings for LXC (Linux Containers) • LXD
(REST APIΛఏڙ͢ΔσʔϞϯΛඋ͓͑ͯ ΓɺωοτϫʔΫܦ༝Ͱͷૢ࡞͕Մೳͳίϯ ςφٕज़ɻLXCͷਐԽ൛తͳͷ)ʹಋೖ͞ Ε͍ͯ·͢ɻ • ଞʹruby-lxcpython2-lxc͋Γ·͕͢ɺ ։ൃࢭ·ͬͯ·͢…
go-lxcͷAPIͷྫ • ίϯςφͷجຊૢ࡞ • ৽ن࡞ɿfunc NewContainer • ίϯςφىಈɿfunc (*Container) Start
• ίϯςφͰͷίϚϯυ࣮ߦɿfunc (*Container) Execute • ίϯςφഁغɿfunc (*Container) Destroy • ίϯςφఀࢭɿfunc (*Container) Shutdown • ίϯςφҰཡɿfunc Containers
go-lxcͷAPIͷྫ • ίϯςφ͝ͱͷಠࣗઃఆɺsnapshotɺϓϩη εͷσʔϞϯԽ • func (*Container) SetMemorySwapLimit • func
(*Container) CreateSnapshot • func (*Container) Daemonize
go-lxcͷίʔυϦʔσΟϯά // go-lxc/container.go func (c *Container) Start() error { if
err := c.makeSure(isNotRunning); err != nil { return err } c.mu.Lock() defer c.mu.Unlock() if !bool(C.go_lxc_start(c.container, 0, nil)) { return ErrStartFailed } return nil }
go-lxcͷίʔυϦʔσΟϯά // go-lxc/lxc-binding.c bool go_lxc_start(struct lxc_container *c, int useinit, char
* const argv[]) { return c->start(c, useinit, argv); }
go-lxcͷίʔυϦʔσΟϯά // lxc/src/lxc/lxccontainer.c struct lxc_container *lxc_container_new(const char *name, const char
*configpath) { struct lxc_container *c; ... c->start = lxcapi_start; ... } static bool lxcapi_start(struct lxc_container *c, int useinit, char * const argv[]) { bool ret; current_config = c ? c->lxc_conf : NULL; ret = do_lxcapi_start(c, useinit, argv); current_config = NULL; return ret; }
Dockerϓν࣮աఔɿֶश • cgroup, chroot, snapshot࡞पΓͷษڧɻ • Ծڥͱ͍͏ΑΓִۭؒΛ࡞ΔΠϝʔδΛ࣋ͭɻ • ॳظͷDockerLXCͬͯͨΑ͏ͳͷͰɺLXCͷษڧ …
• Docker HubͷAPIͷ༷ಡΉ… • ͪΖΜdockerͦͷͷͷ࣮ͱlxcͷίʔυಡ Ήɻ
Dockerϓν࣮աఔɿ࣮ • e.g. pull -> run, execͷྲྀΕ • Docker HubͷAPIΛୟ͖ɺimages
endpointΛୟ͍ͯɺඞཁͳsession tokenΛऔಘ͢Δ • session token͖ͰRegistry APIΛୟ͍ͯɺ֘λάͷimage_idΛऔಘ͢ Δ • Imageͷancestry(diffཤྺ)Λऔಘ͢Δ • layer(ImageͷόΠφϦσʔλ)Λऔಘ͠ɺಛఆσΟϨΫτϦԼʹల։͢Δ • ετϨʔδͷঢ়ଶͷࠩ(ancestry)ΛϨΠϠͱͯ͠ॏͶ߹ΘͤΔ͜ͱͰɺΠ ϝʔδΛܗ͢ΔɻʢϢχΦϯϑΝΠϧγεςϜʣ • snapshotΛҙͷσΟϨΫτϦʹอଘͭͭ͠ɺͦͷΠϝʔδΛݩʹLXCΛ ىಈɺίϚϯυ࣮ߦ
Dockerϓν࣮աఔɿ࣮ • e.g. pull -> run, execͷྲྀΕ • Docker HubͷAPIΛୟ͖ɺimages
endpointΛୟ͍ͯɺඞཁͳsession tokenΛऔಘ͢Δ • session token͖ͰRegistry APIΛୟ͍ͯɺ֘λάͷimage_idΛऔಘ͢ Δ • Imageͷancestry(diffཤྺ)Λऔಘ͢Δ • layer(ImageͷόΠφϦσʔλ)Λऔಘ͠ɺಛఆσΟϨΫτϦԼʹల։͢Δ • ετϨʔδͷঢ়ଶͷࠩ(ancestry)ΛϨΠϠͱͯ͠ॏͶ߹ΘͤΔ͜ͱͰɺΠ ϝʔδΛܗ͢ΔɻʢϢχΦϯϑΝΠϧγεςϜʣ • snapshotΛҙͷσΟϨΫτϦʹอଘͭͭ͠ɺͦͷΠϝʔδΛݩʹLXCΛ ىಈɺίϚϯυ࣮ߦʢ͕͜͜LXCΛ͏ॴʣ
Dockerϓν࣮աఔɿ࣮ • imageͷϩʔυͰ֎෦APIΛୟ͖ʹߦ͘ͷ ͷɺجຊతʹLXCͷػೳͰ݁͢Δɻ • bockerbtrfsʹΑΔsnapshot࡞ɺcgroupʹ ΑΔϦιʔεཧɺωοτϫʔΫઃఆɺ chrootͰϧʔτมߋΛϕλͰ࣮ɻ
݁ՌɺGolang͡Όͳ͔͔ͬͨΒ… • ·ͣɺવGoDocͳΜͯͳͷͳ͍ • ͨΓલͷ͜ͱͰ͕͢ɺ͜Ε͕ݪҼͰAPIͷ ༷ΛѲ͢ΔͨΊʹίʔυΛಡΉ͜ͱ ʹͳΓ·͢ɻ • ͦͷίʔυ͕LXCΛΧϓηϧԽͨ͠ɺ͔Γ ͍͢ίʔυͳΒ·ͩ͠ɺC֦ுͷίʔυ
ͳͷͰࢮɻ
ͨͱ͑container_start static VALUE container_start(int argc, VALUE *argv, VALUE self) {
int ret; VALUE rb_use_init, rb_daemonize, rb_close_fds, rb_args, rb_opts; struct start_without_gvl_args args; args.use_init = 0; args.daemonize = 1; args.close_fds = 0; args.args = NULL; rb_args = Qnil; rb_scan_args(argc, argv, "01", &rb_opts); if (!NIL_P(rb_opts)) { Check_Type(rb_opts, T_HASH); rb_use_init = rb_hash_aref(rb_opts, SYMBOL("use_init")); if (!NIL_P(rb_use_init)) ͓͏ɺͦ͏ͩͳɻ
݁ՌɺGolang͡Όͳ͔͔ͬͨΒ… • rubyͷ߹ɺGolangͷΑ͏ʹૉఢʹAPI͕ੜ ͍͑ͯΔΘ͚Ͱͳͯ͘ɺ͜͏ɻ • GoҎ֎ͷLXC࣮lxcΛݺͼग़͚ͩ͢Ͱɺ APIͱͯ͠ϦʔμϒϧͩͬͨΓɺརศੑΛߟྀ ͨ͠୯Ґʹϝιουׂ͕͞Εͯͳ͔ͬͨΓ ͠·͢ɻ require
'lxc/lxc'
݁ՌɺGolang͡Όͳ͔͔ͬͨΒ… • GolangͳΒ func (*Container) IPAddress func (*Container) CPUStatsͳͲɺ ίϯςφΛཧ͢Δʹͨͬͯݟ͍ͨใ͕
ࣗ༝ʹݟΕ·͢ɻ • Ұํlxc/lxc-ruby… ϝϞϦωοτϫʔΫཧconfigͷΈ… ͏ͪΐͬͱ࿑ಇͯ͠ʂ
͓લͳΜͰ RubyͰ ࣮͠Α͏ ͱࢥͬͨΜͩʁ
·ͱΊ • GoͷLXCपΓͷ࣮ॆ࣮ͯ͠·͢ɻ • APIͷ༷͕ࡉԽ͞ΕͯͯɺυΩϡϝϯτ ੜ͞ΕͯΔͷͰɺαοͱίϯςφԾԽͷ ίʔυΛಡΉ͜ͱ͕Ͱ͖·͢ɻͥͻɻ • GoͰ͔ͬ͠Γͨ͠API͕Ͱ͖͕͋ͬͯΔͱɺ ͦΕҎ֎ͷݴޠͰͷ࣮͕Γͳ͘ײ͡·͢ɻ
ٯΒ͏ͷΊ·͠ΐ͏ɻ
Thank you!