Пример конфигурации Kubernetes Ingress с выбором бекенда на основе значения аргумента "proxy". И дефолтным бекендом, если значение аргумента "proxy" отличное от "1" и "2", или отсутствует.
manifest.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: artem-test-proxy-0-app
namespace: staging
labels:
app: artem-test-proxy-0-app
spec:
replicas: 1
selector:
matchLabels:
app: artem-test-proxy-0-app
strategy:
type: RollingUpdate
progressDeadlineSeconds: 300
minReadySeconds: 60
template:
metadata:
labels:
app: artem-test-proxy-0-app
spec:
containers:
- name: artem-test-proxy-0
image: dockersamples/static-site
env:
- name: AUTHOR
value: Default
ports:
- containerPort: 80
nodeSelector:
nodegroup: staging
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: artem-test-proxy-1-app
namespace: staging
labels:
app: artem-test-proxy-1-app
spec:
replicas: 1
selector:
matchLabels:
app: artem-test-proxy-1-app
strategy:
type: RollingUpdate
progressDeadlineSeconds: 300
minReadySeconds: 60
template:
metadata:
labels:
app: artem-test-proxy-1-app
spec:
containers:
- name: artem-test-proxy-1
image: dockersamples/static-site
env:
- name: AUTHOR
value: Proxy=1
ports:
- containerPort: 80
nodeSelector:
nodegroup: staging
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: artem-test-proxy-2-app
namespace: staging
labels:
app: artem-test-proxy-2-app
spec:
replicas: 1
selector:
matchLabels:
app: artem-test-proxy-2-app
strategy:
type: RollingUpdate
progressDeadlineSeconds: 300
minReadySeconds: 60
template:
metadata:
labels:
app: artem-test-proxy-2-app
spec:
containers:
- name: artem-test-proxy-2
image: dockersamples/static-site
env:
- name: AUTHOR
value: Proxy=2
ports:
- containerPort: 80
nodeSelector:
nodegroup: staging
---
apiVersion: v1
kind: Service
metadata:
name: artem-test-proxy-0-svc
namespace: staging
spec:
ports:
- port: 80
protocol: TCP
targetPort: 80
selector:
app: artem-test-proxy-0-app
---
apiVersion: v1
kind: Service
metadata:
name: artem-test-proxy-1-svc
namespace: staging
spec:
ports:
- port: 80
protocol: TCP
targetPort: 80
selector:
app: artem-test-proxy-1-app
---
apiVersion: v1
kind: Service
metadata:
name: artem-test-proxy-2-svc
namespace: staging
spec:
ports:
- port: 80
protocol: TCP
targetPort: 80
selector:
app: artem-test-proxy-2-app
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: artem-test-proxy-ing
namespace: staging
annotations:
kubernetes.io/ingress.class: ingress-staging
certmanager.k8s.io/cluster-issuer: letsencrypt-prod
certmanager.k8s.io/acme-challenge-type: dns01
certmanager.k8s.io/acme-dns01-provider: dns
nginx.ingress.kubernetes.io/rewrite-target: /
nginx.ingress.kubernetes.io/configuration-snippet: |
if ($arg_proxy = 1) {
proxy_pass http://artem-test-proxy-1-svc.staging.svc.cluster.local;
}
if ($arg_proxy = 2) {
proxy_pass http://artem-test-proxy-2-svc.staging.svc.cluster.local;
}
spec:
tls:
- hosts:
- artem.services
secretName: artem.services-secret-tls
rules:
- host: artem.services
http:
paths:
- path: /
backend:
serviceName: artem-test-proxy-0-svc
servicePort: 80