{"id":37586,"date":"2019-10-31T22:18:27","date_gmt":"2019-10-31T19:18:27","guid":{"rendered":"https:\/\/prohoster.info\/blog\/infrastructure-as-code-pervoe-znakomstvo\/"},"modified":"2019-10-31T22:18:27","modified_gmt":"2019-10-31T19:18:27","slug":"infrastructure-as-code-pervoe-znakomstvo","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/infrastructure-as-code-pervoe-znakomstvo","title":{"rendered":"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V na\u0161\u00ed spole\u010dnosti prob\u00edh\u00e1 onboarding t\u00fdmu SRE. Do cel\u00e9 t\u00e9to historie jsem vstoupil z pohledu v\u00fdvoje. V pr\u016fb\u011bhu jsem m\u011bl my\u0161lenky a post\u0159ehy, o kter\u00e9 se chci pod\u011blit s dal\u0161\u00edmi v\u00fdvoj\u00e1\u0159i. V tomto \u010dl\u00e1nku-zam\u00fd\u0161len\u00ed hovo\u0159\u00edm o tom, co se d\u011bje, jak se to d\u011bje, a jak s t\u00edm v\u0161ichni d\u00e1l \u017e\u00edt. <\/p>\n<p><img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/d154a2fbbd0dd846c763db178f02702e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<blockquote><p><b>Pokra\u010dov\u00e1n\u00ed s\u00e9rie \u010dl\u00e1nk\u016f napsan\u00fdch na z\u00e1klad\u011b vystoupen\u00ed na na\u0161\u00ed intern\u00ed akci. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dodopizzaio\/blog\/462033\/\">DevForum<\/a><\/noindex><\/b>: <\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dodopizzaio\/blog\/463469\/\">1. Ko\u010dka Schr\u00f6dinger bez krabice: probl\u00e9m konsensu v distribuovan\u00fdch syst\u00e9mech.<\/a><\/noindex><br \/>\n2. Infrastruktura jako k\u00f3d. (Jste zde)<br \/>\n3. Generov\u00e1n\u00ed Typescript kontrakt\u016f z C# model\u016f. (Pr\u00e1ce prob\u00edh\u00e1&#8230;)<br \/>\n4. \u00davod do algoritmu konsensu Raft. (Pr\u00e1ce prob\u00edh\u00e1&#8230;)<br \/>\n&#8230;<\/p><\/blockquote>\n<p>\nRozhodli jsme se vytvo\u0159it t\u00fdm SRE, kter\u00fd realizuje my\u0161lenky <noindex><a rel=\"nofollow\" href=\"https:\/\/landing.google.com\/sre\/books\/\">google sre<\/a><\/noindex>. Nabrali jsme program\u00e1tory z na\u0161ich vlastn\u00edch v\u00fdvoj\u00e1\u0159\u016f a poslali je \u0161kolit na n\u011bkolik m\u011bs\u00edc\u016f. <\/p>\n<p>P\u0159ed t\u00fdmem st\u00e1ly n\u00e1sleduj\u00edc\u00ed vzd\u011bl\u00e1vac\u00ed \u00fakoly:<\/p>\n<ul>\n<li>Popsat na\u0161i infrastrukturu, kter\u00e1 je p\u0159ev\u00e1\u017en\u011b v Microsoft Azure, pomoc\u00ed k\u00f3du (Terraform a v\u0161e kolem). <\/li>\n<li>Nau\u010dit v\u00fdvoj\u00e1\u0159e pracovat s infrastrukturou. <\/li>\n<li>P\u0159ipravit v\u00fdvoj\u00e1\u0159e na pohotovosti.<\/li>\n<\/ul>\n<p><\/p>\n<h2>Zav\u00e1d\u00edme pojem Infrastruktura jako k\u00f3d.<\/h2>\n<p>\nV b\u011b\u017en\u00e9m modelu sv\u011bta (klasick\u00e9m administraci) se znalosti o infrastruktu\u0159e nach\u00e1zej\u00ed na dvou m\u00edstech:<\/p>\n<ol>\n<li>Bu\u010f ve form\u011b znalost\u00ed v hlav\u00e1ch expert\u016f.<img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/2400dea0a90c24b05c275b709bbd2057.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<li>Nebo tyto informace nach\u00e1zej\u00ed na n\u011bjak\u00fdch stroj\u00edch, z nich\u017e \u010d\u00e1st znaj\u00ed experti. Ale nen\u00ed jist\u00e9, \u017ee osoba zven\u010d\u00ed (v p\u0159\u00edpad\u011b, \u017ee na\u0161e cel\u00e1 t\u00fdm n\u00e1hle zem\u0159e) dok\u00e1\u017ee pochopit, co a jak funguje. Na stroji m\u016f\u017ee b\u00fdt mnoho informac\u00ed: p\u0159\u00edstupy, crontaby, podu\u010dovan\u00fd (viz <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Mount_(computing)\">disk mounting<\/a><\/noindex>) disk a prost\u011b nekone\u010dn\u00fd seznam toho, co se m\u016f\u017ee d\u00edt. Podle n\u011bj je t\u011b\u017ek\u00e9 pochopit, co se ve skute\u010dnosti d\u011bje.<img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/37bafea85a641c48683c35975f67f24d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/li>\n<\/ol>\n<p>\nV obou p\u0159\u00edpadech se ocit\u00e1me v pasti, st\u00e1v\u00e1me se z\u00e1visl\u00fdmi:<\/p>\n<ul>\n<li>bu\u010f na \u010dlov\u011bku, kter\u00fd je smrteln\u00fd, n\u00e1chyln\u00fd k nemocem, zamilovanostem, zm\u011bn\u00e1m n\u00e1lady a prost\u00fdm ban\u00e1ln\u00edm odchod\u016fm;<\/li>\n<li>nebo na fyzicky funguj\u00edc\u00ed ma\u0161in\u011b, kter\u00e1 tak\u00e9 selh\u00e1v\u00e1, krade se, p\u0159in\u00e1\u0161\u00ed p\u0159ekvapen\u00ed a nep\u0159\u00edjemnosti. <\/li>\n<\/ul>\n<p>\nSamoz\u0159ejm\u011b se nab\u00edz\u00ed \u0159e\u0161en\u00ed, \u017ee ide\u00e1ln\u011b v\u0161e je t\u0159eba p\u0159ev\u00e9st do \u010diteln\u00e9ho, udr\u017eovateln\u00e9ho, kvalitn\u011b napsan\u00e9ho k\u00f3du. <\/p>\n<p>Infrastruktura jako k\u00f3d (Infrastructure as Code \u2013 IaC) je popis ve\u0161ker\u00e9 existuj\u00edc\u00ed infrastruktury ve form\u011b k\u00f3du, jako\u017e i souvisej\u00edc\u00ed n\u00e1stroje pro pr\u00e1ci s n\u00edm a jej\u00edm p\u0159etv\u00e1\u0159en\u00edm na skute\u010dnou infrastrukturu.<\/p>\n<p><b class=\"spoiler_title\">Pro\u010d p\u0159ev\u00e1d\u011bt v\u0161echno do k\u00f3du<\/b>Lid\u00e9 nejsou stroje. Nemohou si v\u0161echno zapamatovat. Reakce \u010dlov\u011bka a stroje je odli\u0161n\u00e1. V\u0161e, co je automatizov\u00e1no, potenci\u00e1ln\u011b funguje rychleji ne\u017e cokoliv, co d\u011bl\u00e1 \u010dlov\u011bk. Nejd\u016fle\u017eit\u011bj\u0161\u00ed je m\u00edt jeden zdroj pravdy (single source of truth). <\/p>\n<p><b class=\"spoiler_title\">Odkud p\u0159ich\u00e1zej\u00ed nov\u00ed SRE in\u017een\u00fd\u0159i<\/b>Rozhodli jsme se tedy zapojit nov\u00e9 SRE in\u017een\u00fdry, ale kde je vz\u00edt? Kniha s odpov\u011b\u010fmi (<noindex><a rel=\"nofollow\" href=\"https:\/\/landing.google.com\/sre\/books\/\">Google SRE Book<\/a><\/noindex>) n\u00e1m \u0159\u00edk\u00e1: ze zdrojov\u00e9ho k\u00f3du. Pracuj\u00ed s k\u00f3dem a vy dosahujete ide\u00e1ln\u00edho stavu.<\/p>\n<p>Dlouho jsme je hledali na pracovn\u00edm trhu mimo na\u0161i spole\u010dnost. Ale mus\u00edme p\u0159iznat, \u017ee jsme nena\u0161li ani jednoho, kdo by vyhovoval na\u0161im po\u017eadavk\u016fm. Museli jsme se pod\u00edvat mezi vlastn\u00edmi lidmi. <\/p>\n<h2>Probl\u00e9my infrastruktury jako k\u00f3du<\/h2>\n<p>\nPod\u00edvejme se nyn\u00ed na p\u0159\u00edklady toho, jak m\u016f\u017ee b\u00fdt infrastruktura zak\u00f3dov\u00e1na. K\u00f3d je dob\u0159e naps\u00e1n, kvalitn\u011b, s koment\u00e1\u0159i a odsazen\u00edm. <\/p>\n<p>P\u0159\u00edklad k\u00f3du z Terraformu.<\/p>\n<p><img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/1a0bbca47e88fb12e97c0f270efba177.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nP\u0159\u00edklad k\u00f3du z Ansible.<\/p>\n<p><img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/358fad8f5944bca1b97b2d6e37b2ee5e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nP\u00e1nov\u00e9, ale co kdyby to bylo tak jednoduch\u00e9! Jsme p\u0159ece v re\u00e1ln\u00e9m sv\u011bt\u011b, a ten v\u017edycky p\u0159ekvap\u00ed, p\u0159inese p\u0159ekvapen\u00ed a probl\u00e9my. A tady to nen\u00ed jinak.<\/p>\n<p><b>1. Prvn\u00ed probl\u00e9m spo\u010d\u00edv\u00e1 v tom, \u017ee v mnoha p\u0159\u00edpadech je IaC n\u011bjak\u00fdm DSL.<\/b><\/p>\n<p>A DSL je popis struktury. P\u0159esn\u011bji \u0159e\u010deno toho, co byste m\u011bli m\u00edt: Json, Yaml, modifikace od n\u011bkolika velk\u00fdch spole\u010dnost\u00ed, kter\u00e9 vymyslely sv\u016fj DSL (v Terraformu se pou\u017e\u00edv\u00e1 HCL). <\/p>\n<p>Probl\u00e9m je v tom, \u017ee v n\u011bm mohou snadno chyb\u011bt tolik zn\u00e1m\u00e9 prvky jako:<\/p>\n<ul>\n<li>prom\u011bnn\u00e9;<\/li>\n<li>podm\u00ednky;<\/li>\n<li>n\u011bkde chyb\u00ed koment\u00e1\u0159e, nap\u0159\u00edklad v Jsonu, ty nejsou ve v\u00fdchoz\u00edm nastaven\u00ed zahrnuty;<\/li>\n<li>funkce;<\/li>\n<li>a to je\u0161t\u011b nemluv\u00edm o takov\u00fdch vysoce \u00farov\u0148ov\u00fdch prvc\u00edch, jako jsou t\u0159\u00eddy, d\u011bdi\u010dnost a podobn\u011b.<\/li>\n<\/ul>\n<p>\n <b>2. Druh\u00fdm probl\u00e9mem takov\u00e9ho k\u00f3du je, \u017ee v\u011bt\u0161inou se jedn\u00e1 o heterogenn\u00ed prost\u0159ed\u00ed<\/b>. Obvykle sed\u00edte a pracujete s C#, tedy s jedn\u00edm jazykem, jedn\u00edm stackem, jednou ekosyst\u00e9mou. A tady m\u00e1te obrovsk\u00e9 mno\u017estv\u00ed technologi\u00ed. <\/p>\n<p>Celkem re\u00e1ln\u00e1 situace, kdy\u017e bash s Pythonem spou\u0161t\u00ed n\u011bjak\u00fd proces, do kter\u00e9ho se zasouv\u00e1 JSON. Analyzujete ho, pak n\u011bjak\u00fd gener\u00e1tor vygeneruje dal\u0161\u00edch 30 soubor\u016f. Pro to v\u0161echno p\u0159ich\u00e1zej\u00ed vstupn\u00ed prom\u011bnn\u00e9 z Azure Key Vault, kter\u00e9 jsou sta\u017eeny pluginem pro drone.io napsan\u00fdm v Go, a tyto prom\u011bnn\u00e9 proch\u00e1zej\u00ed YAML, kter\u00fd vznikl z generace \u0161ablonova\u010de JSONnet. Docela obt\u00ed\u017en\u00e9 m\u00edt p\u0159\u00edsn\u011b dob\u0159e popsan\u00fd k\u00f3d, kdy\u017e m\u00e1te tak r\u016fznorod\u00e9 prost\u0159ed\u00ed. <\/p>\n<p>Tradi\u010dn\u00ed v\u00fdvoj v r\u00e1mci jednoho \u00fakolu prob\u00edh\u00e1 s jedn\u00edm jazykem. Tady ale pracujeme s velk\u00fdm mno\u017estv\u00edm jazyk\u016f. <\/p>\n<p><b>3. T\u0159et\u00ed probl\u00e9m - tooling<\/b>. Jsme zvykl\u00ed na skv\u011bl\u00e9 editory (Ms Visual Studio, Jetbrains Rider), kter\u00e9 za n\u00e1s d\u011blaj\u00ed v\u0161echno. A i kdy\u017e se n\u00e1m n\u011bco nepoda\u0159\u00ed, \u0159eknou n\u00e1m, \u017ee nejsme v po\u0159\u00e1dku. Zd\u00e1 se, \u017ee to je norm\u00e1ln\u00ed a p\u0159irozen\u00e9. <\/p>\n<p>Ale n\u011bkde bl\u00edzko je VSCode, ve kter\u00e9m jsou n\u011bjak\u00e9 pluginy, kter\u00e9 se n\u011bjak instaluj\u00ed, podporuj\u00ed nebo nepodporuj\u00ed. Vy\u0161ly nov\u00e9 verze a tyto u\u017e nebyly podpo\u0159eny. Ban\u00e1ln\u00ed p\u0159echod k implementaci funkce (i kdy\u017e existuje) se st\u00e1v\u00e1 slo\u017eit\u00fdm a netrivi\u00e1ln\u00edm probl\u00e9mem. Jednoduch\u00e9 p\u0159ejmenov\u00e1n\u00ed prom\u011bnn\u00e9 je nahrazen\u00ed v projektu z deseti soubor\u016f. Bude m\u00edt \u0161t\u011bst\u00ed, pokud je to to, co m\u00e1 nahradit. Samoz\u0159ejm\u011b, n\u011bkde je zv\u00fdrazn\u011bn\u00ed, n\u011bkde je automatick\u00e9 dokon\u010den\u00ed, n\u011bkde je form\u00e1tov\u00e1n\u00ed (pravda, u m\u011b to na Terraformu ve Windows nefungovalo). <\/p>\n<p>V dob\u011b psan\u00ed tohoto \u010dl\u00e1nku <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/mauve\/vscode-terraform\">vscode-terraform plugin<\/a><\/noindex> je\u0161t\u011b nezve\u0159ejnili podporu verze 0.12, a\u010dkoliv byla vyd\u00e1na u\u017e p\u0159ed 3 m\u011bs\u00edci.<\/p>\n<h2>Je \u010das zapomenout na&#8230;<\/h2>\n<p><\/p>\n<ol>\n<li>Debugging.<\/li>\n<li>Refactoring tool.<\/li>\n<li>Auto completion.<\/li>\n<li>Objevov\u00e1n\u00ed chyb p\u0159i kompilaci.<\/li>\n<\/ol>\n<p>\nJe to legra\u010dn\u00ed, ale to p\u0159ece zvy\u0161uje \u010das na v\u00fdvoj a zvy\u0161uje po\u010det chyb, kter\u00e9 nevyhnuteln\u011b vznikaj\u00ed. <\/p>\n<p>Nejhor\u0161\u00ed je, \u017ee mus\u00edme myslet ne na to, jak navrhnout, rozlo\u017eit soubory do slo\u017eek, decomponovat, ud\u011blat k\u00f3d udr\u017eovateln\u00fdm, \u010diteln\u00fdm a tak d\u00e1le, ale na to, jak spr\u00e1vn\u011b napsat tento p\u0159\u00edkaz, proto\u017ee jsem ho n\u011bjak napsal \u0161patn\u011b. <\/p>\n<p>Jako nov\u00e1\u010dek se sna\u017e\u00edte pochopit Terraform, a IDE v\u00e1m v tom v\u016fbec nepom\u00e1h\u00e1. Kdy\u017e je dokumentace \u2013 p\u0159i\u0161li jste, pod\u00edvali jste se. Ale kdybyste vch\u00e1zeli do nov\u00e9ho programovac\u00edho jazyka, IDE by v\u00e1m nazna\u010dila, \u017ee existuje takov\u00fd typ, a takov\u00fd ne. Minim\u00e1ln\u011b na \u00farovni int nebo string. To \u010dasto b\u00fdv\u00e1 u\u017eite\u010dn\u00e9. <\/p>\n<h2>A co testy?<\/h2>\n<p>\nZept\u00e1te se: \u201eJak je to s testy, p\u00e1nov\u00e9 program\u00e1to\u0159i?\u201c Odpov\u011b\u010f je, \u017ee v\u00e1\u017en\u00ed kluci v\u0161echno testuj\u00ed na produkci, a to tvrd\u011b. Tady je p\u0159\u00edklad jednotkov\u00e9ho testu pro Terraform modul z webu. <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.microsoft.com\/ru-ru\/azure\/terraform\/terratest-in-terraform-modules\">Microsoft<\/a><\/noindex>. <\/p>\n<p><img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/b9391409941e14f7e3cf6f8d964a2668.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMaj\u00ed dobrou dokumentaci. Microsoft mi v\u017edy imponoval sv\u00fdm p\u0159\u00edstupem k dokumentaci a vzd\u011bl\u00e1v\u00e1n\u00ed. Ale nen\u00ed nutn\u00e9 b\u00fdt str\u00fd\u010dkem Bobem, abychom pochopili, \u017ee zde nen\u00ed ide\u00e1ln\u00ed k\u00f3d. V\u0161imn\u011bte si validace, kter\u00e1 je p\u0159esunuta doprava. <\/p>\n<p>Probl\u00e9m s jednotkov\u00fdm testem je, \u017ee m\u016f\u017eeme ov\u011b\u0159it spr\u00e1vnost JSONu na v\u00fdstupu. Poslal jsem 5 parametr\u016f a vygenerovalo mi to JSON se 2000 \u0159\u00e1dky. Mohu analyzovat, co se zde d\u011bje, validate test result\u2026 <\/p>\n<p>Je slo\u017eit\u00e9 analyzovat JSON v Go. Ale mus\u00edte ps\u00e1t v Go, proto\u017ee Terraform na Go je dobr\u00e1 praxe, co testujete v jazyce, ve kter\u00e9m p\u00ed\u0161ete. Samo uspo\u0159\u00e1d\u00e1n\u00ed k\u00f3du je velmi slab\u00e9. P\u0159esto je to nejlep\u0161\u00ed knihovna pro testov\u00e1n\u00ed. <\/p>\n<p>Microsoft s\u00e1m p\u00ed\u0161e sv\u00e9 moduly a testuje je t\u00edmto zp\u016fsobem. Samoz\u0159ejm\u011b, \u017ee je to Open Source. V\u0161echno, o \u010dem mluv\u00edm, m\u016f\u017eete p\u0159ij\u00edt a opravit. Mohu si sednout a za t\u00fdden v\u0161echno opravit, open-source pluginy pro VS Code, Terraform, ud\u011blat plugin pro Rider. Mo\u017en\u00e1 napsat p\u00e1r analyz\u00e1tor\u016f, p\u0159ipojit lintery, p\u0159isp\u011bt do knihovny pro testov\u00e1n\u00ed. V\u0161echno mohu ud\u011blat. Ale t\u00edm bych se nem\u011bl zab\u00fdvat. <\/p>\n<h2>Nejlep\u0161\u00ed praxe Infrastructure as code<\/h2>\n<p>\nJdeme d\u00e1l. Pokud v IaC nejsou testy, je to \u0161patn\u00e9 s IDE a n\u00e1stroji, alespo\u0148 by m\u011bly b\u00fdt nejlep\u0161\u00ed praxe. Jednodu\u0161e jsem \u0161el do Google Analytics a porovnal dva vyhled\u00e1vac\u00ed dotazy: Terraform best practices a c# best practices. <\/p>\n<p><img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/3d0e8cd626596deea99324285321a0ab.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nCo vid\u00edme? Ne\u00faprosn\u00e9 statistiky, kter\u00e9 nejsou v n\u00e1\u0161 prosp\u011bch. Co se t\u00fd\u010de mno\u017estv\u00ed materi\u00e1lu, je to stejn\u00e9. V C# v\u00fdvoji se doslova koupeme v materi\u00e1lech, m\u00e1me nadstandardn\u00ed praxe, existuj\u00ed knihy napsan\u00e9 odborn\u00edky a tak\u00e9 kn\u00ed\u017eky napsan\u00e9 dal\u0161\u00edmi odborn\u00edky, kter\u00e9 kritizuj\u00ed ty prvn\u00ed. Mo\u0159e ofici\u00e1ln\u00ed dokumentace, \u010dl\u00e1nk\u016f, v\u00fdukov\u00fdch kurz\u016f, a te\u010f je\u0161t\u011b open source v\u00fdvoj.<\/p>\n<p>Co se t\u00fd\u010de dotazu na IaC: tady se sna\u017e\u00edte posb\u00edrat informace z prezentac\u00ed Highload nebo HashiConf, z ofici\u00e1ln\u00ed dokumentace a z mnoha probl\u00e9m\u016f na GitHubu. Jak vlastn\u011b tyto moduly rozlo\u017eit, co s nimi d\u011blat? Zd\u00e1 se, \u017ee to je skute\u010dn\u00fd probl\u00e9m\u2026 Existuje komunita, p\u00e1nov\u00e9, kde na ka\u017edou ot\u00e1zku v\u00e1m daj\u00ed 10 koment\u00e1\u0159\u016f na GitHubu. Ale to nen\u00ed jist\u00e9. <\/p>\n<p>Bohu\u017eel, odborn\u00edci teprve za\u010d\u00ednaj\u00ed p\u0159ib\u00fdvat. Zat\u00edm je jich p\u0159\u00edli\u0161 m\u00e1lo. A samotn\u00e1 komunita se nach\u00e1z\u00ed na po\u010d\u00e1tku v\u00fdvoje. <\/p>\n<h2>Kam to v\u0161echno sm\u011b\u0159uje a co d\u011blat<\/h2>\n<p>\nM\u016f\u017eete v\u0161echno hodit za hlavu a vr\u00e1tit se zp\u011bt k C#, do sv\u011bta \u0161pi\u010dkov\u00fdch program\u00e1tor\u016f. Ale ne. Pro\u010d byste se t\u00edm v\u016fbec zab\u00fdvali, pokud nenajdete \u0159e\u0161en\u00ed? N\u00ed\u017ee uv\u00e1d\u00edm sv\u00e9 subjektivn\u00ed z\u00e1v\u011bry. M\u016f\u017eete se mnou diskutovat v koment\u00e1\u0159\u00edch, bude to zaj\u00edmav\u00e9. <\/p>\n<p>Osobn\u011b s\u00e1z\u00edm na n\u011bkolik v\u011bc\u00ed:<\/p>\n<ol>\n<li>Rozvoj v t\u00e9to oblasti prob\u00edh\u00e1 velmi rychle. Uv\u00e1d\u00edm graf vyhled\u00e1v\u00e1n\u00ed t\u00fdkaj\u00edc\u00edho se DevOps.\n<p><img decoding=\"async\" alt=\"Infrastruktura jako k\u00f3d: prvn\u00ed sezn\u00e1men\u00ed.\" src=\"\/wp-content\/uploads\/2019\/08\/068276f040f17c84a4c7eb9e11703c5c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMo\u017en\u00e1 je to popul\u00e1rn\u00ed t\u00e9ma, ale samotn\u00fd fakt, \u017ee oblast roste, vn\u00e1\u0161\u00ed nad\u011bji. <\/p>\n<p>Pokud n\u011bco roste tak rychle, ur\u010dit\u011b se objev\u00ed chyt\u0159\u00ed lid\u00e9, kte\u0159\u00ed \u0159\u00edkaj\u00ed, jak to d\u011blat spr\u00e1vn\u011b a jak ne. Zvy\u0161uj\u00edc\u00ed se popularita vede k tomu, \u017ee si mo\u017en\u00e1 n\u011bkdo kone\u010dn\u011b najde \u010das doplnit plugin k jsonnet pro vscode, kter\u00fd umo\u017en\u00ed p\u0159ej\u00edt k implementaci funkce, a ne ji hledat p\u0159es ctrl+shift+f. Kdy\u017e se v\u0161e vyv\u00edj\u00ed, vznik\u00e1 v\u00edce materi\u00e1l\u016f. Vyd\u00e1n\u00ed knihy od Googlu o SRE je skv\u011bl\u00fdm p\u0159\u00edkladem.<\/li>\n<li>Existuj\u00ed vyvinut\u00e9 metodiky a praktiky v b\u011b\u017en\u00e9m v\u00fdvoji, kter\u00e9 m\u016f\u017eeme \u00fasp\u011b\u0161n\u011b aplikovat i zde. Ano, jsou zde nuance s testov\u00e1n\u00edm a heterogenn\u00edm prost\u0159ed\u00edm, nedostate\u010dn\u00e9 n\u00e1stroje, ale bylo nashrom\u00e1\u017ed\u011bno obrovsk\u00e9 mno\u017estv\u00ed praktik, kter\u00e9 mohou b\u00fdt u\u017eite\u010dn\u00e9 a pomoci.\n<p>Ban\u00e1ln\u00ed p\u0159\u00edklad: spolupr\u00e1ce prost\u0159ednictv\u00edm p\u00e1rov\u00e9ho programov\u00e1n\u00ed. To v\u00fdrazn\u011b pom\u00e1h\u00e1 pochopit v\u011bci. Kdy\u017e m\u00e1te vedle sebe n\u011bkoho, kdo se tak\u00e9 sna\u017e\u00ed n\u011bco pochopit, spole\u010dn\u011b porozum\u00edte l\u00e9pe.<\/p>\n<p> Pochopen\u00ed, jak prov\u00e1d\u011bt refaktoring, pom\u00e1h\u00e1 dokonce i v takov\u00e9 situaci ho prov\u00e1d\u011bt. To znamen\u00e1, \u017ee m\u016f\u017eete nem\u011bnit v\u0161echno najednou, ale zm\u011bnit n\u00e1zvoslov\u00ed, pak zm\u011bnit um\u00edst\u011bn\u00ed, nakonec mo\u017en\u00e1 vy\u010dlenit n\u011bjakou \u010d\u00e1st, a hezky, tady chyb\u00ed koment\u00e1\u0159e. <\/li>\n<\/ol>\n<p><\/p>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>\nI kdy\u017e se m\u00e9 \u00favahy mohou zd\u00e1t pesimistick\u00e9, s nad\u011bj\u00ed se d\u00edv\u00e1m do budoucnosti a up\u0159\u00edmn\u011b douf\u00e1m, \u017ee se n\u00e1m (a v\u00e1m) v\u0161echno poda\u0159\u00ed.<\/p>\n<blockquote><p>Druh\u00e1 \u010d\u00e1st \u010dl\u00e1nku se ji\u017e p\u0159ipravuje. V n\u00ed se pod\u011bl\u00edm o to, jak jsme se pokusili aplikovat metodiky agiln\u00edho v\u00fdvoje, abychom zlep\u0161ili n\u00e1\u0161 proces u\u010den\u00ed a pr\u00e1ci s infrastrukturou.<\/p><\/blockquote>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dodopizzaio\/blog\/465137\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0423 \u043d\u0430\u0441 \u0432 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 \u0438\u0434\u0451\u0442 \u043f\u0440\u043e\u0446\u0435\u0441\u0441 \u043e\u043d\u0431\u043e\u0440\u0434\u0438\u043d\u0433\u0430 SRE-\u043a\u043e\u043c\u0430\u043d\u0434\u044b. \u042f \u0437\u0430\u0448\u0451\u043b \u0432\u043e \u0432\u0441\u044e \u044d\u0442\u0443 \u0438\u0441\u0442\u043e\u0440\u0438\u044e \u0441\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438. \u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0443 \u043c\u0435\u043d\u044f \u043f\u043e\u044f\u0432\u0438\u043b\u0438\u0441\u044c \u043c\u044b\u0441\u043b\u0438 \u0438 \u0438\u043d\u0441\u0430\u0439\u0442\u044b, \u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u044f \u0445\u043e\u0447\u0443 \u043f\u043e\u0434\u0435\u043b\u0438\u0442\u044c\u0441\u044f \u0441 \u0434\u0440\u0443\u0433\u0438\u043c\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438. \u0412 \u044d\u0442\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435-\u0440\u0430\u0437\u043c\u044b\u0448\u043b\u0435\u043d\u0438\u0438 \u044f \u0433\u043e\u0432\u043e\u0440\u044e \u043e \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442, \u043a\u0430\u043a \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442, \u0438 \u043a\u0430\u043a \u0432\u0441\u0435\u043c \u0434\u0430\u043b\u044c\u0448\u0435 \u0441 \u044d\u0442\u0438\u043c \u0436\u0438\u0442\u044c. \u041f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u0435 \u0441\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0442\u0435\u0439, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043f\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":28211,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-37586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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