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T

NageshbansalandGitHub 6d50edd33d docs: fix broken links in docs (#91 )

#### Chores

- Fix Broken Links for `patches.md` in casting docs

Related: https://github.com/SigNoz/foundry/issues/90

2026-04-04 14:50:50 +00:00

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Helm with Patches

Field	Value
Mode	`kubernetes`
Flavor	`helm`
Platform	`-`

Overview

Extends the base kubernetes/helm example with production patches for AWS. Demonstrates setting resource limits, dedicated node scheduling, and persistence configuration on the generated values.yaml using spec.patches.

For patch reference, see Patches.

Prerequisites

Kubernetes cluster (1.24+)
Helm 3.x
SigNoz Helm chart repo (https://charts.signoz.io)

Configuration

apiVersion: v1alpha1
metadata:
  name: signoz
spec:
  deployment:
    flavor: helm
    mode: kubernetes
  patches:
    # Resource limits on ClickHouse
    - target: "deployment/values.yaml"
      operations:
        - op: add
          path: /clickhouse/resources
          value:
            requests:
              cpu: "2"
              memory: "4Gi"
            limits:
              cpu: "4"
              memory: "8Gi"

    # Resource limits on SigNoz
    - target: "deployment/values.yaml"
      operations:
        - op: add
          path: /signoz/resources
          value:
            requests:
              cpu: "500m"
              memory: "1Gi"
            limits:
              cpu: "1"
              memory: "2Gi"

    # Tolerations and nodeSelector for dedicated nodes
    - target: "deployment/values.yaml"
      operations:
        - op: add
          path: /signoz/tolerations
          value:
            - key: "dedicated"
              operator: "Equal"
              value: "signoz"
              effect: "NoSchedule"
        - op: add
          path: /signoz/nodeSelector
          value:
            node-role.kubernetes.io/observability: ""

    # Resource limits on OTel Collector (ingester)
    - target: "deployment/values.yaml"
      operations:
        - op: add
          path: /otelCollector/resources
          value:
            requests:
              cpu: "1"
              memory: "2Gi"
            limits:
              cpu: "2"
              memory: "4Gi"

    # ClickHouse persistence
    - target: "deployment/values.yaml"
      operations:
        - op: add
          path: /clickhouse/persistence
          value:
            enabled: true
            storageClass: gp3
            size: 100Gi

Deploy

foundryctl cast -f casting.yaml

Or step by step:

foundryctl forge -f casting.yaml
helm install signoz signoz/signoz -f pours/deployment/values.yaml -n signoz --create-namespace

Generated output

pours/deployment/
  values.yaml

Customization

Resource limits

Each component maps to a top-level key in the Helm chart values: clickhouse, signoz, otelCollector. Set resources.requests and resources.limits on each.

Tolerations and nodeSelector

Schedules SigNoz on nodes labeled node-role.kubernetes.io/observability with a dedicated=signoz:NoSchedule toleration.

Persistence

Configures ClickHouse persistent storage with a cloud provider storage class. Adjust storageClass for your provider: gp3 on AWS, pd-ssd on GCP, managed-premium on Azure.

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