I have created a REST API using node and I have containerized it using Kubernetes and Docker. The kubernetes pods are run inside a minikube environment for development purposes.
The application was running fine and now its giving the below error.
[distribution] Initial Distribution API Database connection error occured - MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
[distribution] at NativeConnection.Connection.openUri (/app/node_modules/mongoose/lib/connection.js:830:32)
[distribution] at Mongoose.connect (/app/node_modules/mongoose/lib/index.js:335:15)
[distribution] at /app/src/index.ts:60:8
[distribution] at step (/app/src/index.ts:34:23)
[distribution] at Object.next (/app/src/index.ts:15:53)
[distribution] at fulfilled (/app/src/index.ts:6:58)
[distribution] at processTicksAndRejections (node:internal/process/task_queues:93:5) {
[distribution] reason: TopologyDescription {
[distribution] type: 'ReplicaSetNoPrimary',
[distribution] setName: null,
[distribution] maxSetVersion: null,
[distribution] maxElectionId: null,
[distribution] servers: Map(3) {
[distribution] 'cluster0-shard-00-00.psdty.mongodb.net:27017' => [ServerDescription],
[distribution] 'cluster0-shard-00-01.psdty.mongodb.net:27017' => [ServerDescription],
[distribution] 'cluster0-shard-00-02.psdty.mongodb.net:27017' => [ServerDescription]
[distribution] },
[distribution] stale: false,
[distribution] compatible: true,
[distribution] compatibilityError: null,
[distribution] logicalSessionTimeoutMinutes: null,
[distribution] heartbeatFrequencyMS: 10000,
[distribution] localThresholdMS: 15,
[distribution] commonWireVersion: null
[distribution] }
[distribution] }
The issue seems like a MongoDB connection URL/ Access issue but connection string is correct. (Double checked it with MongoDB Cloud support). Relevant network access is given to every one
I can also confirm that the MongoCloudDB can be accessed via the MongoDB Compass using the same connection URL
My guess is the connection cannot be established from the pods inside minikube with the MongoDB Database.
Does any of you have any idea on how to overcome this??
kubernetes config of the pod and the external service
apiVersion: apps/v1
kind: Deployment
metadata:
name: distribution-depl
spec:
replicas: 1
selector:
matchLabels:
app: distribution
template:
metadata:
labels:
app: distribution
spec:
containers:
- name: distribution
image: ssomlk/distribution
env:
- name: MONGO_URI
value: 'mongodb://ssomlk:<password>@cluster0-shard-00-00.yeu7t.mongodb.net:27017,cluster0-shard-00-01.yeu7t.mongodb.net:27017,cluster0-shard-00-02.yeu7t.mongodb.net:27017/<db_name>?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority'
- name: JWT_ACCESS_TOKEN_KEY
valueFrom:
secretKeyRef:
name: jwt-secret
key: JWT_ACCESS_TOKEN_KEY
- name: JWT_REFRESH_TOKEN_KEY
valueFrom:
secretKeyRef:
name: jwt-secret
key: JWT_REFRESH_TOKEN_KEY
- name: JWT_ACCESS_TOKEN_EXPIRES_IN
value: '15m'
- name: JWT_REFRESH_TOKEN_EXPIRES_IN
value: '60m'
- name: NATS_CLIENT_ID
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: NATS_URL
value: 'http://nats-srv:4222'
- name: NATS_CLUSTER_ID
value: nats-distribution-mailing
- name: MAIL_USER
valueFrom:
secretKeyRef:
name: mail-secret
key: MAIL_USER
- name: MAIL_PWD
valueFrom:
secretKeyRef:
name: mail-secret
key: MAIL_PWD
- name: POOL_SIZE
value: '8'
---
apiVersion: v1
kind: Service
metadata:
name: distribution-srv
spec:
type: ClusterIP
selector:
app: distribution
ports:
- name: distribution
protocol: TCP
port: 3000
targetPort: 3000
Edited with The Error received when trying to implement ExternalService
- The Service "distribution-database-srv" is invalid:
- spec.externalName: Invalid value: "mongodb://ssomlk:@cluster0-shard-00-00.y8kuj.mongodb.net:27017,cluster0-shard-00-01.y8kuj.mongodb.net:27017,cluster0-shard-00-02.y8kuj.mongodb.net:27017/<db_name>?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority": must be no more than 253 characters
- spec.externalName: Invalid value: "mongodb://ssomlk:@cluster0-shard-00-00.y8kuj.mongodb.net:27017,cluster0-shard-00-01.y8kuj.mongodb.net:27017,cluster0-shard-00-02.y8kuj.mongodb.net:27017/<db_name>?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is 'a-z0-9?(.a-z0-9?)*')
Any ideas??
