{"id":38312,"date":"2019-10-31T22:22:55","date_gmt":"2019-10-31T19:22:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/prostoj-i-bezopasnyj-sposob-avtomatizatsii-kanareechnyh-deploev-s-pomoshhyu-helm\/"},"modified":"2019-10-31T22:22:55","modified_gmt":"2019-10-31T19:22:55","slug":"prostoj-i-bezopasnyj-sposob-avtomatizatsii-kanareechnyh-deploev-s-pomoshhyu-helm","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/administrirovanie\/prostoj-i-bezopasnyj-sposob-avtomatizatsii-kanareechnyh-deploev-s-pomoshhyu-helm","title":{"rendered":"Prosty i bezpieczny spos\u00f3b automatyzacji kanarkowych wdro\u017ce\u0144 za pomoc\u0105 Helm","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Prosty i bezpieczny spos\u00f3b automatyzacji kanarkowych wdro\u017ce\u0144 za pomoc\u0105 Helm\" src=\"\/wp-content\/uploads\/2019\/09\/255c7f20fb17c079b8a59ced9c092088.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDeployment kanaryjny to bardzo skuteczna metoda testowania nowego kodu w podzbiorze u\u017cytkownik\u00f3w. Znacznie zmniejsza obci\u0105\u017cenie ruchem, kt\u00f3re mog\u0105 powodowa\u0107 problemy podczas wdra\u017cania, poniewa\u017c odbywa si\u0119 to tylko w obr\u0119bie okre\u015blonej podgrupy. Niniejsza notatka dotyczy tego, jak zorganizowa\u0107 takie wdro\u017cenie za pomoc\u0105 Kubernetes i automatyzacji wdra\u017cania. <i>Zak\u0142ada si\u0119, \u017ce masz podstawow\u0105 wiedz\u0119 na temat Helm i zasob\u00f3w Kubernetes.<\/i>. <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<img decoding=\"async\" alt=\"Prosty i bezpieczny spos\u00f3b automatyzacji kanarkowych wdro\u017ce\u0144 za pomoc\u0105 Helm\" src=\"\/wp-content\/uploads\/2019\/09\/e8501460ddbfe797d036a399680032c1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nProste wdro\u017cenie kanaryjne w Kubernetes obejmuje dwa kluczowe zasoby: sam\u0105 us\u0142ug\u0119 i narz\u0119dzie do wdra\u017cania. Wdro\u017cenie kanaryjne dzia\u0142a przez jedn\u0105 us\u0142ug\u0119, kt\u00f3ra wsp\u00f3\u0142dzia\u0142a z dwoma r\u00f3\u017cnymi zasobami, obs\u0142uguj\u0105cymi ruch aktualizacji. Jeden z tych zasob\u00f3w b\u0119dzie dzia\u0142a\u0107 z wersj\u0105 \u00abkanaryjn\u0105\u00bb, a drugi \u2014 ze stabiln\u0105. W tej sytuacji mo\u017cemy regulowa\u0107 liczb\u0119 wersji kanaryjnych, aby zmniejszy\u0107 ilo\u015b\u0107 wymaganych zasob\u00f3w do obs\u0142ugi ruchu. Na przyk\u0142ad, je\u015bli wolisz u\u017cywa\u0107 Yaml, b\u0119dzie to wygl\u0105da\u0107 nast\u0119puj\u0105co w Kubernetes: <\/p>\n<pre><code class=\"xml\">kind: Deployment\nmetadata:\n  name: app-canary\n  labels:\n    app: app\nspec:\n  replicas: 1\n  ...\n    image: myapp:canary\n---\nkind: Deployment\nmetadata:\n  name: app\n  labels:\n    app: app\nspec:\n  replicas: 5\n  ...\n    image: myapp:stable\n---\nkind: Service\nselector:\n  app: app # Selector przekieruje ruch do obu wdro\u017ce\u0144.<\/code><\/pre>\n<p>\nJeszcze \u0142atwiej jest przedstawi\u0107 ten wariant na kubectl, a w <noindex><a rel=\"nofollow\" href=\"https:\/\/kubernetes.io\/docs\/concepts\/cluster-administration\/manage-deployment\/#canary-deployments\">dokumentacji Kubernetes<\/a><\/noindex> jest nawet pe\u0142noprawny samouczek dotycz\u0105cy tego scenariusza. Ale g\u0142\u00f3wne pytanie tego posta brzmi, jak zamierzamy zautomatyzowa\u0107 ten proces, u\u017cywaj\u0105c Helm. <\/p>\n<h3>Automatyzacja wdro\u017cenia kanaryjnego <\/h3>\n<p>\nPrzede wszystkim potrzebna nam b\u0119dzie mapa chart\u00f3w Helm, w kt\u00f3r\u0105 ju\u017c zapisano zasoby omawiane powy\u017cej. Powinna wygl\u0105da\u0107 mniej wi\u0119cej tak:<\/p>\n<pre><code class=\"xml\">~\\\/charts\\\/app\n\u251c\u2500\u2500 Chart.yaml\n\u251c\u2500\u2500 README.md\n\u251c\u2500\u2500 templates\n\u2502   \u251c\u2500\u2500 NOTES.txt\n\u2502   \u251c\u2500\u2500 _helpers.tpl\n\u2502   \u251c\u2500\u2500 deployment.yaml\n\u2502   \u2514\u2500\u2500 service.yaml\n\u2514\u2500\u2500 values.yaml<\/code><\/pre>\n<p>\nPodstaw\u0105 koncepcji Helm jest zarz\u0105dzanie wersjami wyda\u0144. Wersja Stable to nasza g\u0142\u00f3wna stabilna ga\u0142\u0105\u017a kodu projektu. Ale za pomoc\u0105 Helm mo\u017cemy wdro\u017cy\u0107 wersj\u0119 kanaryjn\u0105 z naszym eksperymentalnym kodem. Najwa\u017cniejsze jest utrzymanie wymiany ruchu mi\u0119dzy stabiln\u0105 wersj\u0105 a wersj\u0105 kanaryjn\u0105. Zarz\u0105dza\u0107 tym wszystkim b\u0119dziemy za pomoc\u0105 specjalnego selektora:<\/p>\n<pre><code class=\"xml\">selector:\n  app.kubernetes.io\\\/name: myapp<\/code><\/pre>\n<p>\nNasze zasoby do wdro\u017ce\u0144 zar\u00f3wno typu \u201ekanarkowego\u201d, jak i stabilnego b\u0119d\u0105 wskazywa\u0107 t\u0119 etykiet\u0119 w modu\u0142ach. Je\u015bli wszystko zostanie prawid\u0142owo skonfigurowane, podczas wdra\u017cania kanarkowej wersji naszej mapy chart\u00f3w Helm zobaczymy, \u017ce ruch b\u0119dzie kierowany do \u015bwie\u017co wdro\u017conych modu\u0142\u00f3w. Stabilna wersja tej komendy b\u0119dzie wygl\u0105da\u0107 tak: <\/p>\n<pre><code class=\"xml\">helm upgrade\n  --install myapp \n  --namespace default \n  --set app.name=myapp       # Przechodzi do app.kubernetes.io\/name\n  --set app.version=v1       # Przechodzi do app.kubernetes.io\/version\n  --set image.tag=stable \n  --set replicaCount=5<\/code><\/pre>\n<p>\nTeraz sprawd\u017amy nasze kanarkowe wydanie. Aby wdro\u017cy\u0107 kanarkow\u0105 wersj\u0119, musimy pami\u0119ta\u0107 o dw\u00f3ch rzeczach. Nazwa wydania musi si\u0119 r\u00f3\u017cni\u0107, aby\u015bmy nie nadpisali aktualnej wersji stabilnej. Wersja i tag r\u00f3wnie\u017c musz\u0105 by\u0107 r\u00f3\u017cne, aby\u015bmy mogli wdro\u017cy\u0107 inny kod i okre\u015bli\u0107 r\u00f3\u017cnice wed\u0142ug etykiet zasob\u00f3w. <\/p>\n<pre><code class=\"xml\">helm upgrade\n  --install myapp-canary \n  --namespace default \n  --set app.name=myapp       # Przechodzi do app.kubernetes.io\/name\n  --set app.version=v2       # Przechodzi do app.kubernetes.io\/version\n  --set image.tag=canary \n  --set replicaCount=1<\/code><\/pre>\n<p>\nI to wszystko! Je\u015bli pingniemy us\u0142ug\u0119, mo\u017cna zauwa\u017cy\u0107, \u017ce kanarkowe wdro\u017cenie kieruje ruch tylko cz\u0119\u015b\u0107 czasu. <\/p>\n<p>\nJe\u015bli szukasz narz\u0119dzi do automatyzacji wdro\u017ce\u0144, kt\u00f3re zawieraj\u0105 opisan\u0105 logik\u0119, zwr\u00f3\u0107 uwag\u0119 na <noindex><a rel=\"nofollow\" href=\"https:\/\/deliverybot.github.io\/\">Deliverybot<\/a><\/noindex> i na <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/deliverybot\/helm\">narz\u0119dzia do automatyzacji Helm na GitHubie<\/a><\/noindex>. Charty Helm u\u017cywane do wdro\u017cenia opisanego powy\u017cej sposobu znajduj\u0105 si\u0119 na Githubie, <noindex><a rel=\"nofollow\" href=\"http:\/\/github.com\/deliverybot\/helm\/charts\">tutaj<\/a><\/noindex>. Og\u00f3lnie rzecz bior\u0105c, by\u0142 to teoretyczny przegl\u0105d tego, jak praktycznie wdro\u017cy\u0107 automatyzacj\u0119 wdro\u017ce\u0144 kanarkowych z konkretnymi koncepcjami i przyk\u0142adami.<br \/>\n<br \/>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/itsumma\/blog\/468013\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u0430\u043d\u0430\u0440\u0435\u0435\u0447\u043d\u044b\u0439 \u0434\u0435\u043f\u043b\u043e\u0439 \u2014 \u044d\u0442\u043e \u043e\u0447\u0435\u043d\u044c \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 \u043a\u0430\u043a\u043e\u043c-\u0442\u043e \u043f\u043e\u0434\u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439. \u041e\u043d \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0441\u043d\u0438\u0436\u0430\u0435\u0442 \u0442\u0440\u0430\u0444\u0438\u043a-\u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443, \u0441 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043c\u043e\u0433\u0443\u0442 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u0443\u0442\u044c \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0440\u0430\u0437\u0432\u0435\u0440\u0442\u044b\u0432\u0430\u043d\u0438\u044f, \u0442\u0430\u043a \u043a\u0430\u043a \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u0445 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0439 \u043f\u043e\u0434\u0433\u0440\u0443\u043f\u043f\u044b. \u042d\u0442\u0430 \u0437\u0430\u043c\u0435\u0442\u043a\u0430 \u043f\u043e\u0441\u0432\u044f\u0449\u0435\u043d\u0430 \u0442\u043e\u043c\u0443, \u043a\u0430\u043a \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0439 \u0434\u0435\u043f\u043b\u043e\u0439 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430\u043c\u0438 Kubernetes \u0438 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u0435\u043f\u043b\u043e\u044f. \u041f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0432\u044b \u043a\u043e\u0435-\u0447\u0442\u043e \u0437\u043d\u0430\u0435\u0442\u0435 \u043e Helm \u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":28760,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-38312","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u0430\u043d\u0430\u0440\u0435\u0435\u0447\u043d\u044b\u0439.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pl\/blog\/administrirovanie\/prostoj-i-bezopasnyj-sposob-avtomatizatsii-kanareechnyh-deploev-s-pomoshhyu-helm\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta 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