Is it possible to scale the clickhouse deployment after init SigNoz Community #support

Is it possible to scale the clickhouse deployment ...

Daan Persoons

06/17/2025, 10:23 AM

Is it possible to scale the clickhouse deployment after initial deployment with helm? i want to add these values, but it doesn't seem to scale up

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clickhouse:
  layout:
    shardsCount: 2
    replicasCount: 2
  zookeeper:
    replicaCount: 3

Nagesh Bansal

06/18/2025, 5:29 PM

Could you please share the logs from clickhouse-operator pod

Daan Persoons

06/25/2025, 10:07 AM

Seems like it just doesn't upgrade it, I tried the upgrade around 095600.262570

shared-signoz-clickhouse-operator-747557b694-9vl8c.log shared-signoz-otel-collector-587c56ffb6-rqfcd.log shared-signoz-schema-migrator-sync-sb8wn.log

Daan Persoons

06/27/2025, 10:44 PM

I tried again today, it is just not updating the CHI, the CHI always states the following:

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kubectl get chi shared-signoz-clickhouse -n shared-signoz -o yaml \
  | yq '.spec.configuration.clusters[0].layout'

replicasCount: 1
shardsCount: 1

even though my operator is like this:

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helm get values shared-signoz -n shared-signoz                                                                                        
USER-SUPPLIED VALUES:
alertmanager:
  persistence:
    size: 1Gi
clickhouse:
  layout:
    replicasCount: 2
    shardsCount: 2
  persistence:
    accessModes:
    - ReadWriteOnce
    enabled: true
    size: 200Gi
    storageClass: null
  resources:
    requests:
      cpu: 3
      memory: 8Gi
  zookeeper:
    replicaCount: 3

Now my shared-signoz-schema-migrator-sync-znspd is stuck on the following:

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waiting for clickhouse with correct shard count
expected shard count: 2, current shard count: 1
waiting for clickhouse with correct shard count
expected shard count: 2, current shard count: 1
waiting for clickhouse with correct shard count
expected shard count: 2, current shard count: 1
waiting for clickhouse with correct shard count

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