Cassandra on Google Cloud Platform

This guide covers deploying Apache Cassandra on Google Cloud Platform.

Instance Types

Recommended Machine Types

Use Case	Machine Type	vCPUs	RAM	Notes
Development	n2-standard-2	2	8GB	Testing only
Small Prod	n2-highmem-4	4	32GB	Small workloads
Standard Prod	n2-highmem-8	8	64GB	Recommended
High Perf	n2-highmem-16	16	128GB	Heavy workloads

Storage Options

# Persistent Disk options
pd-ssd:
  iops: "Read: 15K-100K, Write: 15K-30K"
  throughput: "Read: 240-1200 MB/s"
  use_case: "General production"

pd-extreme:
  iops: "Up to 120K"
  throughput: "Up to 2400 MB/s"
  use_case: "High performance"

# Local SSD (ephemeral)
local-ssd:
  iops: "680K read, 360K write"
  size: "375GB per disk"
  note: "Data lost on maintenance/stop"

Network Configuration

VPC Set up

# Terraform example
resource "google_compute_network" "cassandra" {
  name                    = "cassandra-network"
  auto_create_subnetworks = false
}

resource "google_compute_subnetwork" "cassandra" {
  count         = 3
  name          = "cassandra-subnet-${count.index}"
  ip_cidr_range = "10.0.${count.index}.0/24"
  region        = var.region
  network       = google_compute_network.cassandra.id
}

Firewall Rules

resource "google_compute_firewall" "cassandra_internal" {
  name    = "cassandra-internal"
  network = google_compute_network.cassandra.name

  allow {
    protocol = "tcp"
    ports    = ["7000", "7001", "7199", "9042"]
  }

  source_tags = ["cassandra"]
  target_tags = ["cassandra"]
}

Snitch Configuration

GoogleCloudSnitch

cassandra.yaml

endpoint_snitch: GoogleCloudSnitch

# Automatically detects:
# - DC = project:region (e.g., myproject:us-central1)
# - Rack = zone (e.g., us-central1-a)

Deployment with GKE

# Kubernetes StatefulSet
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: cassandra
spec:
  serviceName: cassandra
  replicas: 3
  selector:
    matchLabels:
      app: cassandra
  template:
    metadata:
      labels:
        app: cassandra
    spec:
      containers:
      - name: cassandra
        image: cassandra:4.1
        ports:
        - containerPort: 9042
        - containerPort: 7000
        volumeMounts:
        - name: cassandra-data
          mountPath: /var/lib/cassandra
  volumeClaimTemplates:
  - metadata:
      name: cassandra-data
    spec:
      accessModes: ["ReadWriteOnce"]
      storageClassName: premium-rwo
      resources:
        requests:
          storage: 500Gi

Multi-Zone Deployment

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Next Steps

• Azure Deployment - Azure guide
• Kubernetes - GKE deployment