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[英]MongoDB on kubernetes Community Operator. Statefulset pods on unique nodes
[英]Pods in differents Nodes can't talk each other - Kubernetes
语境:
我正在构建一个应用程序,现在我处于基础架构步骤。
该应用程序是用 Java 构建的,持久层是 MongoDB。
问题:
如果应用程序运行在与持久层相同的节点上,一切正常,但在不同的节点上,应用程序无法与 MongoDB 通信。
有一张 Kubernetes Dashboard 的印刷品:
如您所见,应用程序(网关)的两个 pod 与 Mongo 在同一个节点上运行,但其他两个没有。 这两个都没有找到 MongoDb。
这是 mongo-db.yaml:
apiVersion: v1
kind: PersistentVolume
metadata:
name: mongo-data
spec:
accessModes:
- ReadWriteOnce
capacity:
storage: 1Gi
hostPath:
path: /home/vitor/seguranca/mongo
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc
spec:
storageClassName: ""
accessModes:
- ReadWriteOnce
volumeName: mongo-data
resources:
requests:
storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mongo
name: mongo
spec:
replicas: 1
selector:
matchLabels:
app: mongo
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: mongo
name: mongo-service
spec:
volumes:
- name: "deployment-storage"
persistentVolumeClaim:
claimName: "pvc"
containers:
- image: mongo
name: mongo
ports:
- containerPort: 27017
volumeMounts:
- name: "deployment-storage"
mountPath: "/data/db"
status: {}
---
apiVersion: v1
kind: Service
metadata:
labels:
app: mongo
name: mongo-service
spec:
ports:
- port: 27017
targetPort: 27017
selector:
app: mongo
clusterIP: None
这里是application.yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: gateway
name: gateway
spec:
replicas: 4
selector:
matchLabels:
app: gateway
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: gateway
spec:
containers:
- image: vitornilson1998/native-micro
name: native-micro
env:
- name: MONGO_CONNECTION_STRING
value: mongodb://mongo-service:27017 #HERE IS THE POINT THAT THE APPLICATION USES TO ACCESS MONGODB
- name: MONGO_DB
value: gateway
resources: {}
ports:
- containerPort: 8080
status: {}
---
apiVersion: v1
kind: Service
metadata:
creationTimestamp: null
labels:
app: gateway-service
name: gateway-service
spec:
ports:
- name: 8080-8080
port: 8080
protocol: TCP
targetPort: 8080
selector:
app: gateway
type: NodePort
status:
loadBalancer: {}
我看不到是什么阻止了应用程序到达 MongoDB。
我应该怎么做?
我使用印花布作为 CNI。
我删除了 calico,让 kube-proxy 处理所有事情。
现在一切正常。
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