Unable to fetch data form couchbase cluster deployed in kubernetes

Couchbase Server Kubernetes
1

I am getting the following error while trying to retrieve documents from Couchbase instance deployed in kubernetes having 4 nodes running in it. All servers are enabled for handling data service, Index service, search service and analytics service.

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"message": "A request has been made for a service that is not configured or supported by the cluster. Please check the cluster and enable or add a new node with the requested service: Data."

Couchbase.Core.Services.ServiceNotSupportedException: A request has been made for a service that is not configured or supported by the cluster. Please check the cluster and enable or add a new node with the requested service: Data.

2

@Lal_John that’s very interesting, we run in Kubernetes without issue, though we’re still using the 2.x SDK. A few questions:

  1. Is your app also within the K8S cluster, or are you accessing externally?
  2. What is your bootstrap/connectionstring approach? (Note: We use DNS SRV from the headless service created by the autonomous operator)
  3. Have you tried adding cluster.WaitUntilReadyAsync() to your bootstrap?
3

Thanks for your feedback

  1. client application is also working on K8S cluster.
  2. We use DNS SRV too
  3. I haven’t tried cluster.WaitUntilReadyAsync(). Will try with that
4

@Lal_John -

I think we need to get some SDK logs and investigate what is happening internally. What is the version number of the SDK you are using?

-Jeff

1 Like
5

Currently using Couchbase .net client 2.7.20

This is the instance configuration.

Source: couchbase-operator/templates/couchbase-cluster.yaml

apiVersion: “couchbase.com/v2”
kind: “CouchbaseCluster”
metadata:
name: db-couchbase
spec:
image: couchbase/server:6.5.0
cluster:
analyticsServiceMemoryQuota: 1Gi
autoCompaction:
databaseFragmentationThreshold:
percent: 30
size: 1Gi
parallelCompaction: false
timeWindow: {}
tombstonePurgeInterval: 72h
viewFragmentationThreshold:
percent: 30
size: 1Gi
autoFailoverMaxCount: 3
autoFailoverOnDataDiskIssues: true
autoFailoverOnDataDiskIssuesTimePeriod: 120s
autoFailoverTimeout: 120s
dataServiceMemoryQuota: 20Gi
eventingServiceMemoryQuota: 1Gi
indexServiceMemoryQuota: 15Gi
indexStorageSetting: memory_optimized
searchServiceMemoryQuota: 2Gi
logging:
logRetentionCount: 20
logRetentionTime: 604800s
buckets:
managed: false
selector:
matchLabels:
cluster:db-couchbase
servers:
- name: default
pod:
spec:
containers: null
resources:
limits:
cpu: 8000m
memory: 60Gi
requests:
cpu: 4000m
memory: 50Gi
serverGroups:
services:
- data
- index
- query
- search
- analytics
- eventing
size: 4
volumeMounts:
data: couchbase
default: couchbase
networking:
exposeAdminConsole: true
adminConsoleServices: [data]
exposedFeatures:
- client
- xdcr
adminConsoleServiceType: NodePort
exposedFeatureServiceType: NodePort
security:
adminSecret: prod-db-couchbase
rbac:
managed: true
selector:
matchLabels:
cluster:db-couchbase
xdcr:
managed: false
backup:
managed: false
image: couchbase/operator-backup:6.5.0
serviceAccountName: backup-db-couchbase
monitoring:
prometheus:
enabled: false
image: couchbase/exporter:1.0.1
securityContext:
fsGroup: 1000
volumeClaimTemplates:
- metadata:
name: couchbase
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 100Gi
storageClassName: rbd-fast
logRetentionTime: 604800s
logRetentionCount: 20