APISIX, Prometheus, और KEDA का उपयोग करके Kubernetes में एप्लिकेशन को लोचदार तरीके से स्केल करें

(MoeLove) ➜ helm repo add kedacore https://kedacore.github.io/charts
"kedacore" आपके रेपोजिटरी में जोड़ दिया गया है
(MoeLove) ➜ helm repo update kedacore
कृपया प्रतीक्षा करें जब तक हम आपके चार्ट रेपोजिटरी से नवीनतम जानकारी प्राप्त करते हैं...
..."kedacore" चार्ट रेपोजिटरी से सफलतापूर्वक अपडेट प्राप्त कर लिया गया है
अपडेट पूर्ण। ⎈Happy Helming!⎈
(MoeLove) ➜ helm install keda kedacore/keda --namespace keda --create-namespace
NAME: keda
LAST DEPLOYED: Thu Jan 19 00:01:00 2023
NAMESPACE: keda
STATUS: deployed
REVISION: 1
TEST SUITE: None

(MoeLove) ➜ kubectl -n keda get pods
NAME                                               READY   STATUS    RESTARTS   AGE
keda-operator-metrics-apiserver-6d4db7dcff-ck9qg   1/1     Running   0          36s
keda-operator-5dd4748dcd-k8jjz                     1/1     Running   0          36s

(MoeLove) ➜ https://github.com/prometheus-operator/prometheus-operator/releases/download/v0.62.0/bundle.yaml
(MoeLove) ➜ kubectl apply --server-side -f bundle.yaml
customresourcedefinition.apiextensions.k8s.io/alertmanagerconfigs.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/alertmanagers.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/podmonitors.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/probes.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/prometheuses.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/prometheusrules.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/servicemonitors.monitoring.coreos.com serverside-applied
customresourcedefinition.apiextensions.k8s.io/thanosrulers.monitoring.coreos.com serverside-applied
clusterrolebinding.rbac.authorization.k8s.io/prometheus-operator serverside-applied
clusterrole.rbac.authorization.k8s.io/prometheus-operator serverside-applied
deployment.apps/prometheus-operator serverside-applied
serviceaccount/prometheus-operator serverside-applied
service/prometheus-operator serverside-applied

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: prometheus
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: prometheus
rules:
- apiGroups: [""]
  resources:
  - nodes
  - nodes/metrics
  - services
  - endpoints
  - pods
  verbs: ["get", "list", "watch"]
- apiGroups: [""]
  resources:
  - configmaps
  verbs: ["get"]
- apiGroups:
  - networking.k8s.io
  resources:
  - ingresses
  verbs: ["get", "list", "watch"]
- nonResourceURLs: ["/metrics"]
  verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: prometheus
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: prometheus
subjects:
- kind: ServiceAccount
  name: prometheus
  namespace: default
---
apiVersion: monitoring.coreos.com/v1
kind: Prometheus
metadata:
  name: prometheus
spec:
  serviceAccountName: prometheus
  serviceMonitorSelector:
    matchLabels:
      app: apisix
  serviceMonitorNamespaceSelector:
    matchLabels:
      team: apisix
  resources:
    requests:
      memory: 400Mi
  enableAdminAPI: false
---
apiVersion: v1
kind: Service
metadata:
  name: prometheus
spec:
  type: LoadBalancer
  ports:
  - name: web
    port: 9090
    protocol: TCP
    targetPort: web
  selector:
    prometheus: prometheus

(MoeLove) ➜ kubectl get svc
NAME                  TYPE           CLUSTER-IP      EXTERNAL-IP    PORT(S)          AGE
kubernetes            ClusterIP      10.43.0.1       <none>         443/TCP          96m
prometheus-operator   ClusterIP      None            <none>         8080/TCP         92m
prometheus-operated   ClusterIP      None            <none>         9090/TCP         41m
prometheus            LoadBalancer   10.43.125.194   216.6.66.66    9090:30099/TCP   41m

(MoeLove) ➜ helm repo add apisix https://charts.apiseven.com
"apisix" पहले से ही उसी कॉन्फ़िगरेशन के साथ मौजूद है, छोड़ रहा है
(MoeLove) ➜ helm repo update apisix
कृपया प्रतीक्षा करें जब तक हम आपके चार्ट रेपोजिटरी से नवीनतम जानकारी प्राप्त करते हैं...
..."apisix" चार्ट रेपोजिटरी से सफलतापूर्वक अपडेट प्राप्त कर लिया गया है
अपडेट पूर्ण। ⎈Happy Helming!⎈
(MoeLove) ➜ helm upgrade --install apisix apisix/apisix --create-namespace  --namespace apisix --set gateway.type=LoadBalancer --set ingress-controller.enabled=true --set ingress-controller.config.apisix.serviceNamespace=apisix
Release "apisix" अपग्रेड कर दिया गया है। Happy Helming!
NAME: apisix
LAST DEPLOYED: Thu Jan 19 02:11:23 2023
NAMESPACE: apisix
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
1. एप्लिकेशन URL प्राप्त करने के लिए इन कमांड्स को चलाएं:
     NOTE: LoadBalancer IP उपलब्ध होने में कुछ मिनट लग सकते हैं।
           आप 'kubectl get --namespace apisix svc -w apisix-gateway' चलाकर स्थिति देख सकते हैं।
  export SERVICE_IP=$(kubectl get svc --namespace apisix apisix-gateway --template "{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}")
  echo http://$SERVICE_IP:80

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: example-app
  labels:
    app: apisix
spec:
  selector:
    matchLabels:
      app: apisix
  endpoints:
  - port: web

(MoeLove) ➜ kubectl create deploy httpbin --image=kennethreitz/httpbin --port=80
deployment.apps/httpbin बनाया गया
(MoeLove) ➜ kubectl expose deploy httpbin --port 80

apiVersion: apisix.apache.org/v2
kind: ApisixRoute
metadata:
  name: httpserver-route
spec:
  http:
  - name: rule1
    match:
      hosts:
      - local.httpbin.org
      paths:
      - /*
    backends:
       - serviceName: httpbin
         servicePort: 80

apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: prometheus-scaledobject
  namespace: default
spec:
  scaleTargetRef:
    name: httpbin
  triggers:
  - type: prometheus
    metadata:
      serverAddress: http://prometheus.default.svc:9090
      metricName: apisix_http_status
      threshold: '10'
      query: sum(rate(apisix_http_status{route="httpserver-route"}[1m]))

(MoeLove) ➜ kubectl get pods
NAME                      READY   STATUS    RESTARTS   AGE
httpbin-d46d778d7-chtdw   1/1     Running   0          12m
httpbin-d46d778d7-xanbj   1/1     Running   0          10s

(MoeLove) ➜ kubectl get pods
NAME                      READY   STATUS    RESTARTS   AGE
httpbin-d46d778d7-chtdw   1/1     Running   0          32m