Elastic Stack 监控 Kubernetes

(1/5) Getting started with Elastic Stack for monitoring on Kubernetes

Posted by Sunday on 2019-10-31

介绍

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cat <<EOF >mongo.yml
---
apiVersion: v1
kind: Service
metadata:
  namespace: default
  name: mongo
  labels:
    app: mongo
spec:
  ports:
  - port: 27017
    protocol: TCP
  selector:
    app: mongo
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  namespace: default
  name: mongo
  labels:
    app: mongo
spec:
  serviceName: "mongo"
  replicas: 1
  template:
    metadata:
      labels:
        app: mongo
    spec:
      containers:
      - name: mongo
        image: mongo
        ports:
        - containerPort: 27017
        volumeMounts:
        - name: mongo-persistent-storage
          mountPath: /data/db
      volumes:
      - name: "mongo-persistent-storage"
        emptyDir: {}          
#  volumeClaimTemplates:
#  - metadata:
#      name: mongo-persistent-storage
#      annotations:
#        volume.beta.kubernetes.io/storage-class: "standard"
#    spec:
#      accessModes: [ "ReadWriteOnce" ]
#      storageClassName: standard
#      resources:
#        requests:
#          storage: 1Gi
EOF
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kubectl apply -f mongo.yml

kubectl get all -l app=mongo
NAME          READY   STATUS    RESTARTS   AGE
pod/mongo-0   1/1     Running   0          45s

NAME            TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)     AGE
service/mongo   ClusterIP   10.101.126.132   <none>        27017/TCP   46s

NAME                     READY   AGE
statefulset.apps/mongo   1/1     45s
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cat <<EOF >spring-boot-simple.yml
---
apiVersion: v1
kind: Service
metadata:
  namespace: default
  name: spring-boot-simple
  labels:
    app: spring-boot-simple
spec:
  type: NodePort
  ports:
  - port: 8080
    protocol: TCP
  selector:
    app: spring-boot-simple
---
apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: default
  name: spring-boot-simple
  labels:
    app: spring-boot-simple
spec:
  replicas: 1
  selector:
    matchLabels:
      app: spring-boot-simple
  template:
    metadata:
      labels:
        app: spring-boot-simple
    spec:
      containers:
      - image: gjeanmart/spring-boot-simple:0.0.1-SNAPSHOT
        imagePullPolicy: Always
        name: spring-boot-simple
        env:
          - name: SPRING_DATA_MONGODB_HOST
            value: mongo
        ports:
        - containerPort: 8080
EOF
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kubectl apply -f spring-boot-simple.yml
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kubectl get all -l app=spring-boot-simple
NAME                                      READY   STATUS    RESTARTS   AGE
pod/spring-boot-simple-767bb94595-q8fls   1/1     Running   0          22s

NAME                         TYPE       CLUSTER-IP    EXTERNAL-IP   PORT(S)          AGE
service/spring-boot-simple   NodePort   10.96.25.63   <none>        8080:30401/TCP   23s

NAME                                 READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/spring-boot-simple   1/1     1            1           22s

NAME                                            DESIRED   CURRENT   READY   AGE
replicaset.apps/spring-boot-simple-767bb94595   1         1         1       22s
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curl -X GET http://192.168.10.25:30401/
Greetings from Spring Boot!

Post a message

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curl -X POST http://192.168.10.25:30401/message -d 'hello world'
{"id":"5dba968cc2892e0001eb0673","message":"hello+world=","postedAt":"2019-10-31T08:08:44.860+0000"}

Get all messages

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curl -X GET http://192.168.10.25:30401/message
[{"id":"5dba968cc2892e0001eb0673","message":"hello+world=","postedAt":"2019-10-31T08:08:44.860+0000"}]

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kubectl create namespace monitoring

或apply

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cat <<EOF >monitoring-namespace.yml
---
apiVersion: v1
kind: Namespace
metadata:
   name: monitoring
EOF

https://kauri.io/article/b3be4dbf895b433f93b3cb589d414988

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