{"id":90272,"date":"2020-07-30T13:42:02","date_gmt":"2020-07-30T11:42:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/canary-deployment-v-kubernetes-1-gitlab-ci"},"modified":"2020-07-30T13:42:02","modified_gmt":"2020-07-30T11:42:02","slug":"canary-deployment-v-kubernetes-1-gitlab-ci","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/canary-deployment-v-kubernetes-1-gitlab-ci","title":{"rendered":"Canary Deployment Kubernetes'is #1: Gitlab CI","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h4 id=\"my-budem-ispolzovat-gitlab-ci-i-ruchnoy-gitops-dlya-vnedreniya-i-ispolzovaniya-canary-deploya-v-kubernetes\">Me kasutame Gitlab CI ja k\u00e4sitsi GitOps'i, et rakendada ja kasutada Canary-deployd Kubernetesis.<\/h4>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/03a53dec150529deb3438efaeaa8a1bd.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h4 id=\"stati-iz-etogo-cikla\">Selle ts\u00fckli artiklid:<\/h4>\n<p><\/p>\n<ul>\n<li>(see artikkel)<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/513118\/\">Canary Deployment ArgoCI abil<\/a><\/noindex><\/li>\n<li>Canary Deployment Istio abil<\/li>\n<li>Canary Deployment Jenkins-X Istio Flagger abil<\/li>\n<\/ul>\n<p><\/p>\n<p>Canary-deployd teeme k\u00e4sitsi l\u00e4bi GitOps'i ja Kubernetes'i p\u00f5hivormide loomise\/muutmise. <strong>See artikkel on m\u00f5eldud esmalt tutvumiseks<\/strong> sellega, kuidas Kubernetesis Canary-deploy toimib, kuna on olemas t\u00f5husamaid automatiseerimise viise, millega tutvume j\u00e4rgmistes Artiklites.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/d5127cf7dcec695bd8872b1704eb7e90.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.norberteder.com\/canary-deployment\/\">https:\/\/www.norberteder.com\/canary-deployment\/<\/a><\/noindex><\/p>\n<p><\/p>\n<h3 id=\"canary-deployment\">Canary deploy<\/h3>\n<p><\/p>\n<p>Canary-strateegia uuendamisel rakendatakse esmalt muudatused vaid osale kasutajatest. J\u00e4lgimise, logide andmete, k\u00e4sitsi testimise v\u00f5i muude tagasisidekanalite kaudu testitakse vabanemist enne selle rakendamist k\u00f5igile kasutajatele.<\/p>\n<p><\/p>\n<h3 id=\"kubernetes-deployment-rolling-update\">Kubernetes Deployment (rolling update)<\/h3>\n<p><\/p>\n<p>Kubernetes Deployment'i vaikestrateegia on rolling-update, kus k\u00e4ivitatakse kindel arv pod'e uute versioonide piltidega. Kui need luuakse ilma probleemideta, l\u00f5petatakse vanade versioonide pod'id ning uued pod'id luuakse paralleelselt.<\/p>\n<p><\/p>\n<h3 id=\"gitops\">GitOps<\/h3>\n<p><\/p>\n<p>Kasutame selles n\u00e4ites GitOps'i, kuna:<\/p>\n<p><\/p>\n<ul>\n<li>kasutame Git'i ainusena t\u00f5ena<\/li>\n<li>kasutame Git Operations'i koostamiseks ja deploy'imiseks (muid k\u00e4ske, v\u00e4lja arvatud git tag\/merge, ei ole vaja)<\/li>\n<\/ul>\n<p><\/p>\n<h3 id=\"primer\">N\u00e4ide<\/h3>\n<p><\/p>\n<p>V\u00f5tame hea praktikana \u00fche repozitooriumi rakenduste koodi ja \u00fche infrastruktuuri jaoks.<\/p>\n<p><\/p>\n<h4 id=\"repozitoriy-dlya-prilozheniy\">Rakenduste repozitoorium<\/h4>\n<p><\/p>\n<p>See on v\u00e4ga lihtne API Python+Flaski peal, mis tagastab vastuse JSON-vormingus. Me koostame paketi l\u00e4bi GitlabCI ja l\u00fckkame tulemuse Gitlab Registry'sse. Meie registris on kaks erinevat versiooni:<\/p>\n<p><\/p>\n<ul>\n<li><code>wuestkamp\/k8s-deployment-example-app:v1<\/code><\/li>\n<li><code>wuestkamp\/k8s-deployment-example-app:v2<\/code><\/li>\n<\/ul>\n<p><\/p>\n<p>Ainuke erinevus nende vahel on muutus tagastatavas JSON-failis. Kasutame seda rakendust v\u00f5imalikult lihtsa visualiseerimise jaoks, millise versiooniga me suhtleme.<\/p>\n<p><\/p>\n<h4 id=\"infrastrukturnyy-repozitoriy\">Infrastruktuuri hoidla<\/h4>\n<p><\/p>\n<p>Selles repozitooriumis deploy'ime l\u00e4bi GitlabCI Kubernetesisse, <code>.gitlab-ci.yml<\/code> on j\u00e4rgmisel kujul:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">image: traherom\/kustomize-docker\n\nbefore_script:\n   - printenv\n   - kubectl version\n\nstages:\n - deploy\n\ndeploy test:\n   stage: deploy\n   before_script:\n     - echo $KUBECONFIG\n   script:\n     - kubectl get all\n     - kubectl apply -f i\/k8s\n\n   only:\n     - master\n<\/code><\/pre>\n<p><\/p>\n<p>Selle iseseisvaks k\u00e4itamiseks vajate klastri, saate kasutada Gcloudi:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">gcloud container clusters create canary --num-nodes 3 --zone europe-west3-b\n\ngcloud compute firewall-rules create incoming-80 --allow tcp:80<\/code><\/pre>\n<p><\/p>\n<p>Peate tegema forki <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-canary-infrastructure\">https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-canary-infrastructure<\/a><\/noindex> ja looma muutujat <code>KUBECONFIG<\/code> GitlabCI-s, mis sisaldab konfi ligip\u00e4\u00e4suks <code>kubectl<\/code> teie klastrile.<\/p>\n<p><\/p>\n<p>Kuidas saada Gcloud'i jaoks mingeid andmeid klastrile, saab lugeda <noindex><a rel=\"nofollow\" href=\"https:\/\/medium.com\/faun\/manually-connect-to-your-kubernetes-cluster-from-the-outside-d852346a7f0a\">siit<\/a><\/noindex>.<\/p>\n<p><\/p>\n<h4 id=\"infrastrukturnyy-yaml\">Infrastruktuuri Yaml<\/h4>\n<p><\/p>\n<p>Infrastruktuuri repozitooriumis on meil teenus:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">apiVersion: v1\nkind: Service\nmetadata:\n labels:\n   id: app\n name: app\nspec:\n ports:\n - port: 80\n   protocol: TCP\n   targetPort: 5000\n selector:\n   id: app\n type: LoadBalancer<\/code><\/pre>\n<p><\/p>\n<p>Ja deployment failis <code>deploy.yaml<\/code>:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n name: app\nspec:\n replicas: 10\n selector:\n   matchLabels:\n     id: app\n     type: main\n template:\n   metadata:\n     labels:\n       id: app\n       type: main\n   spec:\n     containers:\n     - image: registry.gitlab.com\/wuestkamp\/k8s-deployment-example-app:v1\n       name: app\n       resources:\n         limits:\n           cpu: 100m\n           memory: 100Mi<\/code><\/pre>\n<p><\/p>\n<p>Ja teine deployment <code>deploy-canary.yaml<\/code>:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">kind: Deployment\nmetadata:\n name: app-canary\nspec:\n replicas: 0\n selector:\n   matchLabels:\n     id: app\n     type: canary\n template:\n   metadata:\n     labels:\n       id: app\n       type: canary\n   spec:\n     containers:\n     - image: registry.gitlab.com\/wuestkamp\/k8s-deployment-example-app:v2\n       name: app\n       resources:\n         limits:\n           cpu: 100m\n           memory: 100Mi<\/code><\/pre>\n<p><\/p>\n<p>Pange t\u00e4hele, et app-deploy'il ei ole veel m\u00e4\u00e4ratletud replikate.<\/p>\n<p><\/p>\n<h4 id=\"vypolnenie-nachalnogo-deploya\">Esialgse deployimise teostamine<\/h4>\n<p><\/p>\n<p>Esialgse deployment\u2019i k\u00e4ivitamiseks v\u00f5ite k\u00e4sitleda GitlabCI toru manuaalselt master haru. P\u00e4rast seda <code>kubectl<\/code> peab see \u0432\u044b\u0432oda j\u00e4rgmist:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/e8ea95fe6c3925f46f6430ce2293063c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Me n\u00e4eme <code>app<\/code> deployment 10 replikaga ja app-canary 0-ga. Samuti on LoadBalancer, mille kaudu saame p\u00f6\u00f6rduda <code>curl<\/code> External IP kaudu:<\/p>\n<p><\/p>\n<p><code>while true; do curl -s 35.198.149.232 | grep label; sleep 0.1; done<\/code><\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/06e6928002532dbe03b65356964110c7.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Me n\u00e4eme, et meie testrakendus tagastab ainult \"v1\".<\/p>\n<p><\/p>\n<h3 id=\"vypolnenie-canary-deploya\">Canary deploy'i teostamine<\/h3>\n<p><\/p>\n<h4 id=\"shag-1-vypustit-novuyu-versiyu-dlya-chasti-polzovateley\">Samm 1: vabastada uus versioon osa kasutajatele<\/h4>\n<p><\/p>\n<p>Oleme seadnud replikate arvu 1 failis deploy-canary.yaml ja uue versiooni kujundi:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">kind: Deployment\nmetadata:\n name: app-canary\nspec:\n replicas: 1\n selector:\n   matchLabels:\n     id: app\n     type: canary\n template:\n   metadata:\n     labels:\n       id: app\n       type: canary\n   spec:\n     containers:\n     - image: registry.gitlab.com\/wuestkamp\/k8s-deployment-example-app:v2\n       name: app\n       resources:\n         limits:\n           cpu: 100m\n           memory: 100Mi<\/code><\/pre>\n<p><\/p>\n<p>Failis <code>deploy.yaml<\/code> me muutsime replikate arvu 9-ni:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">kind: Deployment\nmetadata:\n name: app\nspec:\n replicas: 9\n selector:\n   matchLabels:\n     id: app\n...<\/code><\/pre>\n<p><\/p>\n<p>Me pushime need muudatused reposse, millest k\u00e4ivitub deploy (l\u00e4bi GitlabCI) ja n\u00e4eme tulemuseks:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/b639716b31e41e8eac573fd365ad6780.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Meie teenus osutab m\u00f5lemale deployment'ile, kuna kummalgi on selektor app. Juhusliku jaotuse t\u00f5ttu Kubernetes'is peaksime n\u00e4gema erinevaid vastuseid umbes 10% p\u00e4ringutest:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/d1177207ebd8952fd1994ed0ebdda6a3.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Praegune seis meie rakendusest (GitOps, mis on v\u00f5etud Git\u2019ist kui Ainsast T\u00f5esusallikast) on kahe deployment'i olemasolu aktiivsete replikatega, \u00fcks iga versiooni jaoks.<\/p>\n<p><\/p>\n<p>~10% kasutajatest tutvuvad uue versiooniga ja testivad seda tahtmatult. N\u00fc\u00fcd on aeg kontrollida vigade olemasolu logides ja j\u00e4lgimisandmetes probleemide leidmiseks.<\/p>\n<p><\/p>\n<h4 id=\"shag-2-vypustit-novuyu-versiyu-dlya-vseh-polzovateley\">Samm 2: vabastada uus versioon k\u00f5igile kasutajatele<\/h4>\n<p><\/p>\n<p>Oleme otsustanud, et k\u00f5ik l\u00e4ks h\u00e4sti ja n\u00fc\u00fcd peame uue versiooni k\u00f5ikidele kasutajatele v\u00e4lja laskma. Selleks uuendame lihtsalt <code>deploy.yaml<\/code> uust versiooni kujundi ja replikate arvu, mis on 10. J\u00e4rgmine <code>deploy-canary.yaml<\/code> me seadistame koopia arvu 0-le. P\u00e4rast juurutamist on tulemus j\u00e4rgmine:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kubernetes&#039;is #1: Gitlab CI\" src=\"\/wp-content\/uploads\/2020\/07\/a31aafe96a09c6d2651b2bf7add4dd29.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3 id=\"podvodya-itog\">Kokkuv\u00f5tteks<\/h3>\n<p><\/p>\n<p>Minu jaoks aitab k\u00e4sitsi juurutuse k\u00e4ivitamine selliselt m\u00f5ista, kui lihtsalt saab seda k8s-i kaudu seadistada. Kuna Kubernetes v\u00f5imaldab k\u00f5ike API kaudu uuendada, saab neid samme automatiseerida skriptide kaudu.<\/p>\n<p><\/p>\n<p>Veel \u00fcks asi, mida on vaja ellu viia \u2014 testija sisenemispunkt (LoadBalancer v\u00f5i Ingress kaudu), mille kaudu p\u00e4\u00e4seb juurde ainult uuele versioonile. Seda saab kasutada k\u00e4sitsi vaatamiseks.<\/p>\n<p><\/p>\n<p>J\u00e4rgmistes artiklites vaatame \u00fcle teised automatiseeritud lahendused, mis rakendavad enamiku sellest, mida me tegime.<\/p>\n<p><\/p>\n<h2 id=\"takzhe-chitayte-drugie-stati-v-nashem-bloge\">Vaata ka teisi artikleid meie blogis:<\/h2>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/468779\/\">Milleni viis migratsioon ClickHouse'ist ilma autentsuseta ClickHouse'ile autentsusega<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/473578\/\">D\u00fcnaamiliste moodulite ehitamine Nginxi jaoks<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/news\/t\/502658\/\">NXS-build-tools uuendus \u2014 abimees deb ja rpm pakettide koostamisel<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/473014\/\">Sissejuhatus Hashicorp Consul\u2019i Kubernetes Autoriseerimisse<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/504762\/\">Millele pidime Csync2 t\u00f6\u00f6riista kasutamisel silma peal hoidma<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/347526\/\">Telegrami bot Redmine'i jaoks: Kuidas lihtsustada elu endale ja teistele<\/a><\/noindex><\/li>\n<\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/512766\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041c\u044b \u0431\u0443\u0434\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c Gitlab CI \u0438 \u0440\u0443\u0447\u043d\u043e\u0439 GitOps \u0434\u043b\u044f \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044f \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f Canary-\u0434\u0435\u043f\u043b\u043e\u044f \u0432 Kubernetes \u0421\u0442\u0430\u0442\u044c\u0438 \u0438\u0437 \u044d\u0442\u043e\u0433\u043e \u0446\u0438\u043a\u043b\u0430: (\u044d\u0442\u0430 \u0441\u0442\u0430\u0442\u044c\u044f) Canary Deployment \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 ArgoCI Canary Deployment \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 Istio Canary Deployment \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 Jenkins-X Istio Flagger \u0412\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c Canary-\u0434\u0435\u043f\u043b\u043e\u0439 \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u0440\u0443\u043a\u0430\u043c\u0438 \u0447\u0435\u0440\u0435\u0437 GitOps \u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435\/\u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0445 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 Kubernetes. \u042d\u0442\u0430 \u0441\u0442\u0430\u0442\u044c\u044f \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0430 \u0432 \u043f\u0435\u0440\u0432\u0443\u044e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":90273,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-90272","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=\"\u041c\u044b \u0431\u0443\u0434\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c Gitlab CI \u0438 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