Install

Install with defaults Copied

helm install obcerv-app-query-service itrs/obcerv-app-query-service \
     --version 2.3.0 -n <namespace> --wait

Install with overrides Copied

The Query Service consists of three workloads, all of which are Kubernetes Deployments/ReplicaSets:

  1. Create a chart config file, named app.yaml containing content similar to:
bff:   
  threadPoolSize: 20
  resources: 
    requests: 
      memory: "512Mi"
      cpu: "200m"
    limits: 
      memory: "2Gi"
      cpu: "1"
sink:
   resources: 
    requests: 
      memory: "512Mi"
      cpu: "200m"
    limits: 
      memory: "3Gi"
      cpu: "2" 
db:
  resources: 
    requests: 
      memory: "4Gi"
      cpu: "1"
    limits: 
      memory: "8Gi"
      cpu: "4"
  1. To install the chart, run:
helm install -f app.yaml obcerv-app-query-service itrs/obcerv-app-query-service
  --version 2.3.0 -n <namespace> --wait

Storage Copied

The Persistent Volume Claims (PVC) used by the Query Service are:

PVC Mount
app-query-service-data /data
app-query-service-wal /wal

The allocated storage can be changed by modifying the PVCs in Kubernetes, or the defaults can be overridden at install time by setting db.dataDiskSize and db.walDiskSize in the chart config file.

db:
  dataDiskSize: 20Gi
  walDiskSize: 5Gi

Resource allocation Copied

The app deploys a query service and a database with the following default resource allocations:

bff:   
  threadPoolSize: 20
  resources: 
    requests: 
      memory: "512Mi"
      cpu: "200m"
    limits: 
      memory: "2Gi"
      cpu: "1"
db:
  resources: 
    requests: 
      memory: "4Gi"
      cpu: "1"
    limits: 
      memory: "8Gi"
      cpu: "4"

The following additional parameters are available:

Batch processing Copied

The following additional parameters for sink are available:

  sink:
      batchSize: 1000
      queueSize: 100000
      attributeLookbackPeriod: P7D

Queue size Copied

Since each queue has a different data source, the volume of data largely differs. You can separately configure queue size parameters for entities, attributes, and signals.

The following additional parameters for sink are available:

  sink:
    queue:
      entities: 100000
      attributes: 500000
      signals: 100000

Uninstall Copied

To uninstall, run:

helm uninstall obcerv-app-query-service -n itrs

Upgrade Copied

To upgrade the Query Service, first uninstall and then install it again.

None of the data stored in the Query Service is authorative, and the state is re-built from the Platform on re-install.

["Obcerv"] ["User Guide"]

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