{"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\/et\/blog\/administrirovanie\/canary-deployment-v-kubernetes-3-istio","title":{"rendered":"Canary Deployment Kuberneteses #3: Istio","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h3 id=\"ispolzovanie-istiokiali-dlya-zapuska-i-vizualizacii-canary-deploya\">Istio+Kiali kasutamine kanar\u00fchma juurutamiseks ja visualiseerimiseks<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #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\">Selle ts\u00fckli artiklid<\/h4>\n<p><\/p>\n<ol>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/512766\/\">Canary juurutamine Kuberneteses #1: Gitlab CI<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/513118\/\">Canary Deployment Kuberneteses #2: Argo Rollouts<\/a><\/noindex><\/li>\n<li>(see artikkel)<\/li>\n<li>Kanar\u00fchma juurutamine kasutades Jenkins-X Istio Flaggerit<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3 id=\"canary-deployment\">Canary juurutamine<\/h3>\n<p><\/p>\n<p>Loodame, et olete lugenud <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/en\/company\/nixys\/blog\/512766\/\">esimest osa<\/a><\/noindex>, kus me l\u00fchidalt selgitasime, mis on kanar\u00fchmad ja n\u00e4itasime, kuidas neid rakendada Kubernetes'i standardlike ressursside abil.<\/p>\n<p><\/p>\n<h3 id=\"istio\">Istio<\/h3>\n<p><\/p>\n<p>Oleme eeldanud, et lugedes seda artiklit, te juba tead, mis on Istio. Kui ei, siis saate lugeda selle kohta <noindex><a rel=\"nofollow\" href=\"https:\/\/itnext.io\/kubernetes-istio-simply-visually-explained-58a7d158b83f?source=friends_link&amp;sk=378ed718d2d6cfd09e6d23c7616cba81\">siit<\/a><\/noindex>.<\/p>\n<p><\/p>\n<h3 id=\"prilozhenie-dlya-testov\">Testrakendus<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/4c1e7d1644411cecaf52433b98219bb4.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Iga pod sisaldab kahte konteinerit: meie rakendus ja istio-proxy.<\/p>\n<p><\/p>\n<p>Kasutame lihtsat testrakendust podidega frontend-nginx ja backend pythonil. Nginx pod suunab iga p\u00e4ringu backend podi ja t\u00f6\u00f6tab proksina. \u00dcksikasju saab vaadata j\u00e4rgmistest yamlist:<\/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\">Testrakenduse iseseisev k\u00e4ivitamine<\/h4>\n<p><\/p>\n<p>Kui soovite j\u00e4rgida minu n\u00e4idet ja kasutada seda testrakendust iseseisvalt, siis vaadake. <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/README.md\">projekti readme<\/a><\/noindex>.<\/p>\n<p><\/p>\n<h3 id=\"nachalnyy-deployment\">Algne juurutamine<\/h3>\n<p><\/p>\n<p>Esimese juurutamise k\u00e4ivitamisel n\u00e4eme, et meie rakenduse podidel on vaid 2 konteinerit, see t\u00e4hendab, et Istio sidecar on alles rakendamisel:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/5e1340c271845973cf932cc291d98972.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Ja samuti n\u00e4eme Istio Gateway Loadbalancerit nimedeeringus <code>istio-system<\/code>:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/24549496f038bd61d1288b122c66e6ea.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h4 id=\"sozdanie-trafika\">Liiklus genereerimine<\/h4>\n<p><\/p>\n<p>Kasutame j\u00e4rgmise IP-d, et genereerida liiklust, mille vastavad frontend podid ja suunatakse backend podidele:<\/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>Lisame samuti <code>frontend.istio-test<\/code> meie hosts faili.<\/p>\n<p><\/p>\n<h4 id=\"prosmotr-mesh-cherez-kiali\">Mesh-i vaatamine Kiali kaudu<\/h4>\n<p><\/p>\n<p>Oleme installinud testrakenduse ja Istio koos Tracing, Grafana, Prometheus ja Kiali-ga (rohkem infot vaata <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/wuestkamp\/k8s-deployment-example-istio-canary-infrastructure\/blob\/master\/README.md\">projekti readme<\/a><\/noindex>). Seega saame Kiali kasutada j\u00e4rgmiselt:<\/p>\n<p><\/p>\n<p><code>istioctl dashboard kiali # admin:admin<\/code><\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/3e925a977aedcde3912d46dcc1f47713.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Kiali visualiseerib praegust liiklust Mesh-is<\/p>\n<p><\/p>\n<p>Kuidas me n\u00e4eme, 100% liiklus j\u00f5uab frontend teenusele, seej\u00e4rel frontend podile, millel on label v1, kuna kasutame lihtsat nginx-proxyt, mis suunab p\u00e4ringud backend teenusele, mis omakorda suunab need backend podidele, millel on label v1.<\/p>\n<p><\/p>\n<p>Kiali t\u00f6\u00f6tab suurep\u00e4raselt koost\u00f6\u00f6s Istio-ga ja pakub kohandatud lahendust Mesh-i visualiseerimiseks. Lihtsalt suurep\u00e4rane.<\/p>\n<p><\/p>\n<h3 id=\"canary-deployment-1\">Canary juurutamine<\/h3>\n<p><\/p>\n<p>Meie backendil on juba kaks k8s deploymendi, \u00fcks v1 jaoks ja \u00fcks v2 jaoks. N\u00fc\u00fcd peame lihtsalt \u00fctlema Istio-le, et suunata teatud protsent p\u00e4ringutest v2 peale. <\/p>\n<p><\/p>\n<h3 id=\"shag-1-10\">Samm 1: 10%<\/h3>\n<p><\/p>\n<p>Ja k\u00f5ik, mida me peame tegema, on kohandada VirtualService kaalu <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  - &quot;backend.default.svc.cluster.local&quot;\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 Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/5cf97856676873f5f3cba08b15964c18.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>N\u00e4eme, et 10% p\u00e4ringutest suunatakse v2-le.<\/p>\n<p><\/p>\n<h4 id=\"shag-2-50\">Samm 2: 50%<\/h4>\n<p><\/p>\n<p>N\u00fc\u00fcd on lihtsalt piisav selle suurendamine 50%-ni:<\/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 Kuberneteses #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\">Samm 3: 100%<\/h3>\n<p><\/p>\n<p>N\u00fc\u00fcd v\u00f5ib Canary juurutamine lugeda l\u00f5petatuks ja kogu liiklus suunatakse v2-le:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #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\">Canary testimine k\u00e4sitsi<\/h3>\n<p><\/p>\n<p>Oletame, et praegu suuname backend v2-le 10% k\u00f5igist p\u00e4ringutest. Mis siis, kui soovime k\u00e4sitsi testida v2, et veenduda, et k\u00f5ik t\u00f6\u00f6tab ootusp\u00e4raselt?<\/p>\n<p><\/p>\n<p>Saame lisada eraldi vastavuse reegli, mis p\u00f5hineb HTTP-pealkirjadel:<\/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  - &quot;backend.default.svc.cluster.local&quot;\n  http:\n  - match:\n    - headers:\n        canary:\n          exact: &quot;canary-tester&quot;\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>N\u00fc\u00fcd saame curl'i abil sundida p\u00e4ringut v2, saates pealkirja:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/eaf26cae21c403944110b5d7705e1ebc.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>Ilma pealkirjata p\u00e4ringud haldatakse endiselt suhega 1\/10:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #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 kahe s\u00f5ltuva versiooniga<\/h4>\n<p><\/p>\n<p>N\u00fc\u00fcd vaatleme olukorda, kus meil on nii frontendil kui backendil versioon v2. M\u00f5lemal oleme m\u00e4\u00e4ranud, et 10% liiklusest suundub v2:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #3: Istio\" src=\"\/wp-content\/uploads\/2020\/08\/4b5de3f82cb960102164034b7b6b100a.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<p>N\u00e4eme, et frontend v1 ja v2 suunavad m\u00f5lemad liiklust suhetes 1\/10 backend v1 ja v2.<\/p>\n<p><\/p>\n<p>Ent kui me tahaksime suunata frontend-v2 liiklust ainult backend-v2-le, kuna see ei ole \u00fchilduv v1-ga? Selleks m\u00e4\u00e4rame frontendile 1\/10 suhte, mis kontrollib, milline liiklus satub backend-v2-le, kasutades vastavust: <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  - &quot;backend.default.svc.cluster.local&quot;\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>Saame tulemuse, nagu soovitud:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Canary Deployment Kuberneteses #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\">Erinevused k\u00e4sitsi Canary l\u00e4henemisest<\/h3>\n<p><\/p>\n<p>V <em>esimeses osas<\/em> K\u00e4sitsi viisime l\u00e4bi Canary juurutamise, kasutades kaht k8s juurutust. Seal juhtisime p\u00e4ringute suhet, muutes koopiate arvu. See l\u00e4henemine t\u00f6\u00f6tab, kuid tal on t\u00f5sised puudused.<\/p>\n<p><\/p>\n<p>Istio v\u00f5imaldab m\u00e4\u00e4rata p\u00e4ringute suhet s\u00f5ltumata koopiate arvust. See t\u00e4hendab, et n\u00e4iteks saame kasutada HPAd (Horizontal Pod Autoscalers \u2014 horisontaalne podide skaleerimine) ja seda ei pea kohandama vastavalt k\u00e4esoleva Canary juurutamise olekule.<\/p>\n<p><\/p>\n<h3 id=\"itog\">Kokkuv\u00f5te<\/h3>\n<p><\/p>\n<p>Istio t\u00f6\u00f6tab suurep\u00e4raselt ja selle kasutamine koos Kialiga annab v\u00e4ga v\u00f5imsa kombinatsiooni. J\u00e4rgmine asi, mis mind huvitab, on Spinnakeri ja Istio kombinatsioon automaatika ja Canary anal\u00fc\u00fcsi jaoks.<\/p>\n<p>Allikas: <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 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f Jenkins-X Istio Flagger Canary Deployment \u041d\u0430\u0434\u0435\u0435\u043c\u0441\u044f, \u0447\u0442\u043e \u0432\u044b \u0447\u0438\u0442\u0430\u043b\u0438 \u043f\u0435\u0440\u0432\u0443\u044e \u0447\u0430\u0441\u0442\u044c, \u0433\u0434\u0435 \u043c\u044b \u043a\u0440\u0430\u0442\u043a\u043e \u043e\u0431\u044a\u044f\u0441\u043d\u044f\u043b\u0438 \u0447\u0442\u043e \u0442\u0430\u043a\u043e\u0435 Canary deployments \u0438 \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u043b\u0438 \u043a\u0430\u043a \u0435\u0433\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0438 [&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 4.9.10 - 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 \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 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