{"id":90699,"date":"2020-08-05T01:42:12","date_gmt":"2020-08-04T23:42:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/canary-deployment-v-kubernetes-3-istio"},"modified":"2020-08-05T01:42:12","modified_gmt":"2020-08-04T23:42:12","slug":"canary-deployment-v-kubernetes-3-istio","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/canary-deployment-v-kubernetes-3-istio","title":{"rendered":"Canary Deployment n\u00eb Kubernetes #3: Istio","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h3 id=\"ispolzovanie-istiokiali-dlya-zapuska-i-vizualizacii-canary-deploya\">P\u00ebrdorimi i Istio+Kiali p\u00ebr t\u00eb nisur dhe vizualizuar Canary deployment-in<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/2eeaaaeaa565700d7a8f6f72c5638d4e.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h4 id=\"stati-etogo-cikla\">Artikujt e k\u00ebtij cikli<\/h4>\n<p><\/p>\n<ol>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/512766\/\">Canary Deployment n\u00eb Kubernetes #1: Gitlab CI<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/513118\/\">Canary Deployment n\u00eb Kubernetes #2: Argo Rollouts<\/a><\/noindex><\/li>\n<li>(ky artikull)<\/li>\n<li>Canary Deployment duke p\u00ebrdorur Jenkins-X Istio Flagger<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3 id=\"canary-deployment\">Canary Deployment<\/h3>\n<p><\/p>\n<p>Shpresojm\u00eb se keni lexuar <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/512766\/\">pjes\u00ebn e par\u00eb<\/a><\/noindex>, ku ne shpjeguam p\u00ebrmbledhtazi \u00e7far\u00eb jan\u00eb Canary deployments dhe treguam si t\u00eb realizohet me ndihm\u00ebn e burimeve standarde Kubernetes.<\/p>\n<p><\/p>\n<h3 id=\"istio\">Istio<\/h3>\n<p><\/p>\n<p>Dhe supozojm\u00eb se, duke lexuar k\u00ebt\u00eb artikull, ju tashm\u00eb e dini \u00e7far\u00eb \u00ebsht\u00eb Istio. N\u00ebse jo, mund t\u00eb lexoni p\u00ebr t\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/itnext.io\/kubernetes-istio-simply-visually-explained-58a7d158b83f?source=friends_link&amp;sk=378ed718d2d6cfd09e6d23c7616cba81\">k\u00ebtu<\/a><\/noindex>.<\/p>\n<p><\/p>\n<h3 id=\"prilozhenie-dlya-testov\">Aplikacioni p\u00ebr teste<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/4c1e7d1644411cecaf52433b98219bb4.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>\u00c7do pod p\u00ebrmban dy kontejner\u00eb: aplikacionin ton\u00eb dhe istio-proxy.<\/p>\n<p><\/p>\n<p>Do t\u00eb p\u00ebrdorim nj\u00eb aplikacion testues t\u00eb thjesht\u00eb me pod-e frontend-nginx dhe backend n\u00eb python. Pod-i me nginx do ta redirektoj\u00eb \u00e7do k\u00ebrkes\u00eb n\u00eb pod-in me backend dhe do t\u00eb funksionoj\u00eb si nj\u00eb proxy. Detajet mund t\u00eb shikoni m\u00eb shum\u00eb n\u00eb yamlat e m\u00ebposhtme:<\/p>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/i\/k8s\/frontend.yaml\">frontend.yaml<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/i\/k8s\/backend.yaml\">backend.yaml<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/i\/k8s\/istio.yaml\">istio.yaml<\/a><\/noindex><\/li>\n<\/ul>\n<p><\/p>\n<h4 id=\"zapusk-testovogo-prilozheniya-samostoyatelno\">Nisja e aplikacionit testues vet\u00eb<\/h4>\n<p><\/p>\n<p>N\u00ebse d\u00ebshironi t\u00eb ndiqni shembullin tim dhe t\u00eb p\u00ebrdorni k\u00ebt\u00eb aplikacion testues vet\u00eb, shihni <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/README.md\">readme projekti<\/a><\/noindex>.<\/p>\n<p><\/p>\n<h3 id=\"nachalnyy-deployment\">Deployment-i Fillestar<\/h3>\n<p><\/p>\n<p>Kur nisni Deployment-in e par\u00eb, shohim se pod-et e aplikacionit ton\u00eb kan\u00eb vet\u00ebm nga 2 kontejner\u00eb, pra Istio sidecar tani vet\u00ebm po futet:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/5e1340c271845973cf932cc291d98972.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Dhe gjithashtu shohim Istio Gateway Loadbalancer n\u00eb namespace <code>istio-system<\/code>:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/24549496f038bd61d1288b122c66e6ea.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h4 id=\"sozdanie-trafika\">Krijimi i trafikut<\/h4>\n<p><\/p>\n<p>Ne do t\u00eb p\u00ebrdorim k\u00ebt\u00eb IP p\u00ebr t\u00eb gjeneruar trafikun, i cili do t\u00eb pranohet nga pod-et e frontend dhe do t\u00eb ridrejtohet n\u00eb pod-et e backend:<\/p>\n<p><\/p>\n<p><code>while true; do curl -s --resolve 'frontend.istio-test:80:35.242.202.152' frontend.istio-test; sleep 0.1; done<\/code><\/p>\n<p><\/p>\n<p>Ne gjithashtu do t\u00eb shtojm\u00eb <code>frontend.istio-test<\/code> n\u00eb skedarin ton\u00eb hosts.<\/p>\n<p><\/p>\n<h4 id=\"prosmotr-mesh-cherez-kiali\">P\u00ebr t\u00eb par\u00eb Mesh p\u00ebrmes Kiali<\/h4>\n<p><\/p>\n<p>Ne kemi instaluar aplikacionin testues dhe Istio s\u00eb bashku me Tracing, Grafana, Prometheus dhe Kiali (m\u00eb shum\u00eb n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/README.md\">readme projekti<\/a><\/noindex>). Prandaj, mund t\u00eb p\u00ebrdorim Kiali p\u00ebrmes:<\/p>\n<p><\/p>\n<p><code>istioctl dashboard kiali # admin:admin<\/code><\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/3e925a977aedcde3912d46dcc1f47713.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Kiali vizualizon trafikun aktual p\u00ebrmes Mesh<\/p>\n<p><\/p>\n<p>Si\u00e7 shohim, 100% e trafik t\u00eb shkon n\u00eb sh\u00ebrbimin frontend, pastaj n\u00eb pod-in e frontend-it me etiket\u00ebn v1, pasi ne po p\u00ebrdorim nj\u00eb proxy t\u00eb thjesht\u00eb nginx q\u00eb ridrejton k\u00ebrkesat n\u00eb sh\u00ebrbimin backend, i cili nga ana tjet\u00ebr i ridrejton ato n\u00eb pod-et e backend me etiket\u00ebn v1.<\/p>\n<p><\/p>\n<p>Kiali punon shk\u00eblqyesh\u00ebm me Istio dhe ofron nj\u00eb zgjidhje t\u00eb gatshme p\u00ebr vizualizimin e Mesh. Thjesht e shk\u00eblqyer.<\/p>\n<p><\/p>\n<h3 id=\"canary-deployment-1\">Canary Deployment<\/h3>\n<p><\/p>\n<p>Backend-i yn\u00eb tashm\u00eb ka dy implementime k8s, nj\u00eb p\u00ebr v1 dhe nj\u00eb p\u00ebr v2. Tani, thjesht na nevojitet t\u00eb themi Istio t\u00eb ridrejtoj\u00eb nj\u00eb p\u00ebrqindje t\u00eb caktuar t\u00eb k\u00ebrkesave n\u00eb v2. <\/p>\n<p><\/p>\n<h3 id=\"shag-1-10\">Hapi 1: 10%<\/h3>\n<p><\/p>\n<p>Dhe gjith\u00e7ka q\u00eb na nevojitet \u00ebsht\u00eb t\u00eb rregullojm\u00eb pesh\u00ebn e VirtualService n\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/i\/k8s\/istio.yaml\">istio.yaml<\/a><\/noindex>:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">apiVersion: networking.istio.io\/v1alpha3\nkind: VirtualService\nmetadata:\n  name: backend\n  namespace: default\nspec:\n  gateways: []\n  hosts:\n  - \"backend.default.svc.cluster.local\"\n  http:\n  - match:\n    - {}\n    route:\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v1\n        port:\n          number: 80\n      weight: 90\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v2\n        port:\n          number: 80\n      weight: 10<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/5cf97856676873f5f3cba08b15964c18.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Ne shohim se 10% e k\u00ebrkesave po redirektohen n\u00eb v2.<\/p>\n<p><\/p>\n<h4 id=\"shag-2-50\">Hapi 2: 50%<\/h4>\n<p><\/p>\n<p>Dhe tani \u00ebsht\u00eb mjaft e thjesht\u00eb ta rrisim n\u00eb 50%:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">apiVersion: networking.istio.io\/v1alpha3\nkind: VirtualService\nmetadata:\n  name: backend\n  namespace: default\nspec:\n...\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v1\n        port:\n          number: 80\n      weight: 50\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v2\n        port:\n          number: 80\n      weight: 50<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/c6b425b935e756a8b7ed72051db78763.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3 id=\"shag-3-100\">Hapi 3: 100%<\/h3>\n<p><\/p>\n<p>Tani, implementimi Canary mund t\u00eb konsiderohet i p\u00ebrfunduar dhe gjith\u00eb trafiku redirektohet n\u00eb v2:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/bb028dc47f0799dc9371ce89ae64f805.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3 id=\"testirovanie-canary-vruchnuyu\">Testimi manual i Canary<\/h3>\n<p><\/p>\n<p>Supozoni se tani po d\u00ebrgojm\u00eb n\u00eb backend v2 10% t\u00eb t\u00eb gjitha k\u00ebrkesave. \u00c7far\u00eb ndodh n\u00ebse duam t\u00eb testojm\u00eb manualisht v2 p\u00ebr t'u siguruar q\u00eb gjith\u00e7ka funksionon si\u00e7 e presim?<\/p>\n<p><\/p>\n<p>Mund t\u00eb shtojm\u00eb nj\u00eb rregull t\u00eb ve\u00e7ant\u00eb p\u00ebrkat\u00ebs, t\u00eb bazuar n\u00eb titujt HTTP:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">apiVersion: networking.istio.io\/v1alpha3\nkind: VirtualService\nmetadata:\n  name: backend\n  namespace: default\nspec:\n  gateways: []\n  hosts:\n  - \"backend.default.svc.cluster.local\"\n  http:\n  - match:\n    - headers:\n        canary:\n          exact: \"canary-tester\"\n    route:\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v2\n        port:\n          number: 80\n      weight: 100\n  - match:\n    - {}\n    route:\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v1\n        port:\n          number: 80\n      weight: 90\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v2\n        port:\n          number: 80\n      weight: 10<\/code><\/pre>\n<p><\/p>\n<p>Tani tani duke p\u00ebrdorim curl mund t\u00eb k\u00ebrkojm\u00eb me forc\u00eb v2 duke d\u00ebrguar titullin:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/eaf26cae21c403944110b5d7705e1ebc.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>K\u00ebrkesat pa titull akoma do t\u00eb menaxhohen me raportin 1\/10:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/8cb0cf5832dd935ba5c4649856ac9005.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h4 id=\"canary-dlya-dvuh-zavisimyh-versiy\">Canary p\u00ebr dy versionet e varura<\/h4>\n<p><\/p>\n<p>Tani do t\u00eb shqyrtojm\u00eb nj\u00eb rast, ku kemi versionin v2 p\u00ebr frontend dhe backend. P\u00ebr t\u00eb dy, kemi specifikuar se 10% e trafikut duhet t\u00eb shkoj\u00eb te v2:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/4b5de3f82cb960102164034b7b6b100a.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Ne shohim q\u00eb frontend v1 dhe v2 t\u00eb dy d\u00ebrgojn\u00eb trafik n\u00eb raportin 1\/10 n\u00eb backend v1 dhe v2.<\/p>\n<p><\/p>\n<p>\u00c7far\u00eb n\u00ebse do t\u00eb na nevojitej t\u00eb d\u00ebrgonim trafik nga frontend-v2 vet\u00ebm n\u00eb backend-v2, sepse ai nuk \u00ebsht\u00eb i pajtuesh\u00ebm me v1? P\u00ebr k\u00ebt\u00eb, ne do t\u00eb vendosim nj\u00eb raport 1\/10 p\u00ebr frontend, i cili kontrollon se cilin trafik p\u00ebrfshin backend-v2 duke p\u00ebrdorur p\u00ebrputhjen sipas <code>sourceLabels<\/code> :<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">apiVersion: networking.istio.io\/v1alpha3\nkind: VirtualService\nmetadata:\n  name: backend\n  namespace: default\nspec:\n  gateways: []\n  hosts:\n  - \"backend.default.svc.cluster.local\"\n  http:\n...\n  - match:\n    - sourceLabels:\n        app: frontend\n        version: v2\n    route:\n    - destination:\n        host: backend.default.svc.cluster.local\n        subset: v2\n        port:\n          number: 80\n      weight: 100<\/code><\/pre>\n<p><\/p>\n<p>Si n\u00eb rezultat marrim at\u00eb q\u00eb na nevojitet:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment n\u00eb Kubernetes #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/43739627279a9af11885e602a3e96390.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3 id=\"otlichiya-ot-ruchnogo-canary-podhoda\">Dallimet nga qasja manuale Canary<\/h3>\n<p><\/p>\n<p>N\u00eb <em>pjes\u00ebs s\u00eb par\u00eb<\/em> ne kemi realizuar dep\u00ebrtim Canary manual, gjithashtu duke p\u00ebrdorur dy implementime k8s. Atje kemi menaxhuar raportin e k\u00ebrkesave, duke ndryshuar numrin e replikave. Ky qasje funksionon, por ka mang\u00ebsi t\u00eb konsiderueshme.<\/p>\n<p><\/p>\n<p>Istio ofron mund\u00ebsin\u00eb p\u00ebr t\u00eb p\u00ebrcaktuar raportin e k\u00ebrkesave pavar\u00ebsisht numrit t\u00eb replikave. Kjo do t\u00eb thot\u00eb, p\u00ebr shembull, se mund t\u00eb p\u00ebrdorim HPAs (Horizontal Pod Autoscalers \u2014 shkall\u00ebzimi horizontal i pod-\u00ebve) dhe nuk \u00ebsht\u00eb e nevojshme ta konfigurojm\u00eb sipas gjendjes aktuale t\u00eb dep\u00ebrtimit Canary.<\/p>\n<p><\/p>\n<h3 id=\"itog\">P\u00ebrfundimi<\/h3>\n<p><\/p>\n<p>Istio funksionon shk\u00eblqyesh\u00ebm dhe duke e p\u00ebrdorur at\u00eb s\u00eb bashku me Kiali marrim nj\u00eb kombinim shum\u00eb t\u00eb fuqish\u00ebm. E ardhmja n\u00eb list\u00ebn time t\u00eb interesave \u00ebsht\u00eb kombinimi i Spinnaker me Istio p\u00ebr automatizimin dhe analiz\u00ebn e Canary.<\/p>\n<p>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/nixys\/blog\/513578\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 Istio+Kiali \u0434\u043b\u044f \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u0438 \u0432\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 Canary \u0434\u0435\u043f\u043b\u043e\u044f \u0421\u0442\u0430\u0442\u044c\u0438 \u044d\u0442\u043e\u0433\u043e \u0446\u0438\u043a\u043b\u0430 Canary Deployment \u0432 Kubernetes #1: Gitlab CI Canary Deployment \u0432 Kubernetes #2: Argo Rollouts (\u044d\u0442\u0430 \u0441\u0442\u0430\u0442\u044c\u044f) Canary Deployment 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[&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":90700,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-90699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 Istio+Kiali \u0434\u043b\u044f \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u0438 \u0432\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 Canary \u0434\u0435\u043f\u043b\u043e\u044f\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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