{"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\/et\/blog\/administrirovanie\/prostoj-i-bezopasnyj-sposob-avtomatizatsii-kanareechnyh-deploev-s-pomoshhyu-helm","title":{"rendered":"Lihtne ja turvaline viis kanaride juurutamise automatiseerimiseks Helmiga","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Lihtne
\n
\nKanarike deployed on hapx markt is an efficient way to test new code with a specific subset of users. It significantly reduces the traffic load that may cause problems during deployment, as it occurs only within a defined subgroup. This note is dedicated to organizing such a deployment using Kubernetes and deployment automation. It is assumed that you have some knowledge of Helm and Kubernetes resources.<\/i>.
\n<\/a><\/noindex>
\n\"Lihtne
\n
\nA simple canary deployment in Kubernetes involves two key resources: the service itself and the deployment tool. The canary deployment operates through a single service that interacts with two different resources handling update traffic. One of these resources will run with a \"canary\" version, while the other will handle the stable version. In this scenario, we can regulate the number of canary versions to reduce the amount of traffic that needs to be managed. For example, if you prefer using YAML, it would look like this in Kubernetes: <\/p>\n

t\u00fc\u00fcp: Deployment\nmetaandmed:\n  nimi: app-canary\n  sildid:\n    rakendus: app\nspetsifikatsioon:\n  koopiad: 1\n  ...\n    pilt: myapp:canary\n---\nt\u00fc\u00fcp: Deployment\nmetaandmed:\n  nimi: app\n  sildid:\n    rakendus: app\nspetsifikatsioon:\n  koopiad: 5\n  ...\n    pilt: myapp:stable\n---\nt\u00fc\u00fcp: Service\nvalik:\n  rakendus: app # Valik suunab liiklust m\u00f5lemale deployment'ile.<\/code><\/pre>\n
\nSellist varianti on veelgi lihtsam ette kujutada kubectl'i abil, kuid Kubernetes'e dokumentatsioonis<\/a><\/noindex> on isegi t\u00e4ielik juhend selle stsenaariumi kohta. Kuid selle postituse peamine k\u00fcsimus on, kuidas me kavatseme seda protsessi automatiseerida, kasutades Helm. <\/p>\n
Kanar\u00fc\u00fcde automatiseerimine <\/h3>\n
\nEsiteks vajame Helm'i chart'i faili, kuhu on juba lisatud eelnevalt arutatud ressursid. See peaks v\u00e4lja n\u00e4gema umbes nii:<\/p>\n
~\/charts\/app\n\u251c\u2500\u2500 Chart.yaml\n\u251c\u2500\u2500 README.md\n\u251c\u2500\u2500 mallid\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
\nHelm'i kontseptsiooni p\u00f5hialus on mitme versiooni haldamine. Stable-versioon on meie p\u00f5hja stabiilne koodiharu. Kuid Helm'i abil saame k\u00e4ivitada kanar\u00fc\u00fcsid meie eksperimentaalse koodiga. Peamine on s\u00e4ilitada liikluse vahetamine stabiilse versiooni ja kanar\u00fc\u00fcde vahel. K\u00f5ike seda haldame spetsiaalse valijaga:<\/p>\n
valija:\n  app.kubernetes.io\/name: myapp<\/code><\/pre>\n
\nMeie nii \u00abkanarilistes\u00bb kui ka stable-deploy ressurssidest avaldatud m\u00e4rk t\u00e4histab seda moodulites. Kui k\u00f5ik on \u00f5igesti seadistatud, siis kanariversiooni Helm chart'i avaldamise ajal suunatakse liiklus v\u00e4rskelt juurutatud moodulitele. <\/p>\n
helm upgrade\n  --install myapp \n  --namespace default \n  --set app.name=myapp       # Go into app.kubernetes.io\/name\n  --set app.version=v1       # Go into app.kubernetes.io\/version\n  --set image.tag=stable \n  --set replicaCount=5<\/code><\/pre>\n
\nN\u00fc\u00fcd kontrollime meie kanariversiooni. Kanariversiooni juurutamiseks peame meeles pidama kahte asja. Erinev nimi p\u00f5hiversioonist peab olema, et me ei saaks praegusele stable-versioonile uuendust. Versioon ja silt peavad samuti olema erinevad, et saaksime juurutada teist koodi ja m\u00e4\u00e4rata ressursim\u00e4rkide erinevused. <\/p>\n
helm upgrade\n  --install myapp-canary \n  --namespace default \n  --set app.name=myapp       # Go into app.kubernetes.io\/name\n  --set app.version=v2       # Go into app.kubernetes.io\/version\n  --set image.tag=canary \n  --set replicaCount=1<\/code><\/pre>\n
\nJa see ongi k\u00f5ik! Kui kutsuda teenust, siis n\u00e4eme, et kanariversiooni uuendus suunab liiklust ainult osaliselt ajast. <\/p>\n
\nKui otsite juurutusautomaatika t\u00f6\u00f6riistu, mis sisaldavad kirjeldatud loogikat, siis tasub t\u00e4helepanu p\u00f6\u00f6rata Deliverybot<\/a><\/noindex> ja Helmi automaatika t\u00f6\u00f6riistadele GitHubis<\/a><\/noindex>. Helmi diagrammid, mida kasutatakse \u00fclaltoodud meetodi rakendamiseks, asuvad GitHubis, siit<\/a><\/noindex>. \u00dcldiselt oli see teoreetiline \u00fclevaade sellest, kuidas ellu viia kanarindade versioonide juurutuse automatiseerimist praktikas, koos konkreetsete kontseptsioonide ja n\u00e4idetega.
\n
Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
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