A yoo lo k8s-abinibi Argo Rollouts oludari imuṣiṣẹ ati GitlabCI lati ṣiṣẹ awọn imuṣiṣẹ Canary si Kubernetes
Ìwé ni yi jara
- (Arokọ yi)
- Canary imuṣiṣẹ lilo Istio
- Canary imuṣiṣẹ lilo Jenkins-X Istio Flagger
Canary imuṣiṣẹ
A nireti pe o ka , Nibi ti a ti ṣe alaye ni ṣoki kini Awọn imuṣiṣẹ Canary jẹ. A tun fihan bi a ṣe le ṣe imuse rẹ nipa lilo awọn orisun Kubernetes boṣewa.
Argo Rollouts
Argo Rollouts jẹ oludari imuṣiṣẹ ọmọ abinibi Kubernetes kan. O pese CRD (Itumọ orisun orisun Aṣa) fun Kubernetes. O ṣeun si rẹ, a le lo nkan titun kan: Rollout, eyi ti o ṣakoso awọn bulu-alawọ ewe ati awọn imuṣiṣẹ canary pẹlu orisirisi awọn aṣayan iṣeto ni.
Argo Rollouts oludari lo nipasẹ aṣa awọn oluşewadi
Rollout,Gba laaye fun awọn ilana imuṣiṣẹ ni afikun gẹgẹbi alawọ-alawọ ewe ati canary fun Kubernetes. Awọn orisunRolloutpese deede iṣẹ-ṣiṣeDeployment, nikan pẹlu awọn ilana imuṣiṣẹ afikun.
awọn oluşewadiDeploymentsni awọn ilana meji fun imuṣiṣẹ:RollingUpdateиRecreate. Botilẹjẹpe awọn ọgbọn wọnyi dara fun ọpọlọpọ awọn ọran, fun imuṣiṣẹ si awọn olupin ni iwọn ti o tobi pupọ, awọn ilana afikun ni a lo, bii alawọ-alawọ ewe tabi canary, eyiti ko si ninu oluṣakoso Imuṣiṣẹ. Lati lo awọn ọgbọn wọnyi ni Kubernetes, awọn olumulo ni lati kọ awọn iwe afọwọkọ lori oke Awọn imuṣiṣẹ wọn. Adarí Argo Rollouts ṣafihan awọn ilana wọnyi bi o rọrun, asọye, awọn aye atunto.
Argo CI tun wa, eyiti o pese wiwo oju opo wẹẹbu ti o rọrun fun lilo pẹlu Rollouts, a yoo wo iyẹn ni nkan atẹle.
Fifi Argo Rollouts
Ẹgbẹ olupin
kubectl create namespace argo-rolloutskubectl apply -n argo-rollouts -f https://raw.githubusercontent.com/argoproj/argo-rollouts/stable/manifests/install.yaml
Ninu turnip amayederun wa (wo isalẹ) a ti ṣafikun install.yaml tẹlẹ bi i/k8s/argo-rollouts/install.yaml. Ni ọna yii GitlabCI yoo fi sii sinu iṣupọ.
Ẹgbẹ alabara (ohun itanna kubectl)
Ohun elo apẹẹrẹ
O jẹ iṣe ti o dara lati ni awọn ibi ipamọ lọtọ fun koodu ohun elo ati awọn amayederun.
Ibi ipamọ fun ohun elo
Eyi jẹ Python + Flask API ti o rọrun pupọ ti o da esi pada bi JSON. A yoo kọ package naa nipa lilo GitlabCI ati Titari abajade si Iforukọsilẹ Gitlab. Ninu iforukọsilẹ a ni awọn ẹya itusilẹ oriṣiriṣi meji:
- wuestkamp/k8s-imuṣiṣẹ-apẹẹrẹ-app:v1
- wuestkamp/k8s-imuṣiṣẹ-apẹẹrẹ-app:v2
Iyatọ laarin wọn nikan ni faili JSON pada. A lo ohun elo yii lati wo ni irọrun bi o ti ṣee ṣe iru ẹya ti a n ba sọrọ.
Ibi ipamọ ohun elo
Ninu ibi ipamọ yii a yoo lo GitlabCI fun imuṣiṣẹ si Kubernetes, .gitlab-ci.yml dabi eyi:
image: traherom/kustomize-dockerbefore_script:
- printenv
- kubectl versionstages:
- deploydeploy test:
stage: deploy
before_script:
- echo $KUBECONFIG
script:
- kubectl get all
- kubectl apply -f i/k8s only:
- masterLati ṣiṣẹ funrararẹ iwọ yoo nilo iṣupọ kan, o le lo Gcloud:
gcloud container clusters create canary --num-nodes 3 --zone europe-west3-b
gcloud compute firewall-rules create incoming-80 --allow tcp:80O nilo lati orita ki o si ṣẹda oniyipada KUBECONFIG ni GitlabCI, eyiti yoo ni atunto fun iraye si kubectl si iṣupọ rẹ.
O le ka nipa bi o ṣe le gba awọn iwe-ẹri fun iṣupọ kan (Gcloud).
Amayederun Yaml
Ninu ibi ipamọ amayederun a ni iṣẹ:
apiVersion: v1
kind: Service
metadata:
labels:
id: rollout-canary
name: app
spec:
ports:
- port: 80
protocol: TCP
targetPort: 5000
selector:
id: app
type: LoadBalancerati rollout.yaml:
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
name: rollout-canary
spec:
replicas: 10
revisionHistoryLimit: 2
selector:
matchLabels:
id: rollout-canary
template:
metadata:
labels:
id: rollout-canary
spec:
containers:
- name: rollouts-demo
image: registry.gitlab.com/wuestkamp/k8s-deployment-example-app:v1
imagePullPolicy: Always
strategy:
canary:
steps:
- setWeight: 10
# Rollouts can be manually resumed by running `kubectl argo rollouts promote ROLLOUT`
- pause: {}
- setWeight: 50
- pause: { duration: 120 } # two minutesRollout ṣiṣẹ kanna bi Imuṣiṣẹ. Ti a ko ba ṣeto ilana imudojuiwọn (bii canary nibi) yoo huwa bii Imuṣiṣẹ imudojuiwọn-imudojuiwọn aiyipada.
A ṣalaye awọn igbesẹ meji ni yaml fun imuṣiṣẹ canary:
- 10% ti ijabọ si canary (duro fun afọwọṣe O dara)
- 50% ijabọ si canary (duro awọn iṣẹju 2 lẹhinna tẹsiwaju si 100%)
Ṣiṣe imuṣiṣẹ akọkọ
Lẹhin imuṣiṣẹ akọkọ, awọn orisun wa yoo dabi eyi:
Ati pe a gba esi nikan lati ẹya akọkọ ti ohun elo:
Ṣiṣe imuṣiṣẹ Canary
Igbesẹ 1: 10% ijabọ
Lati bẹrẹ imuṣiṣẹ canary kan, a kan nilo lati yi ẹya aworan pada bi a ṣe n ṣe pẹlu awọn imuṣiṣẹ:
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
name: rollout-canary
spec:
...
template:
metadata:
labels:
id: rollout-canary
spec:
containers:
- name: rollouts-demo
image: registry.gitlab.com/wuestkamp/k8s-deployment-example-app:v2
...Ati pe a Titari awọn ayipada, nitorinaa Gitlab CI ṣe ransẹ ati pe a rii awọn ayipada:
Bayi ti a ba wọle si iṣẹ naa:
Nla! A wa ni arin imuṣiṣẹ canary wa. A le rii ilọsiwaju naa nipa ṣiṣe:
kubectl argo rollouts get rollout rollout-canary
Igbesẹ 2: 50% ijabọ:
Bayi jẹ ki a lọ si igbesẹ ti n tẹle: ṣiṣatunṣe 50% ti ijabọ naa. A tunto igbese yii lati ṣiṣẹ pẹlu ọwọ:
kubectl argo rollouts promote rollout-canary # continue to step 2
Ati pe ohun elo wa pada 50% ti awọn idahun lati awọn ẹya tuntun:
Ati atunyẹwo ifilọlẹ:
Ni pipe.
Igbesẹ 3: 100% ijabọ:
A ṣeto rẹ ki lẹhin iṣẹju 2 igbesẹ 50% dopin laifọwọyi ati igbesẹ 100% bẹrẹ:
Ati abajade ohun elo:
Ati atunyẹwo ifilọlẹ:
Canary imuṣiṣẹ ti pari.
Awọn apẹẹrẹ diẹ sii pẹlu Argo Rollouts
Awọn apẹẹrẹ diẹ sii wa nibi, bii bii o ṣe le ṣeto awọn awotẹlẹ agbegbe ati awọn afiwera ti o da lori canary:
Fidio nipa Argo Rollouts ati Argo CI
Mo ṣeduro fidio yii gaan, o fihan bi Argo Rollouts ati Argo CI ṣe n ṣiṣẹ papọ:
Abajade
Mo nifẹ gaan imọran ti lilo awọn CRD ti o ṣakoso ẹda ti awọn iru imuṣiṣẹ ti afikun tabi awọn atunda, awọn ọna gbigbe, ati bẹbẹ lọ. Ṣiṣẹ pẹlu wọn lọ laisiyonu. Nigbamii Emi yoo fẹ lati ṣe idanwo isọpọ pẹlu Argo CI.
Bibẹẹkọ, o dabi ẹni pe iṣopọ nla ti Argo CI ati Flux CI nbọ, nitorinaa MO le duro titi itusilẹ tuntun yoo fi jade: .
Njẹ o ti ni iriri eyikeyi pẹlu Argo Rollouts tabi Argo CI?
Tun ka awọn nkan miiran lori bulọọgi wa:
orisun: www.habr.com