Further Reading: Terraform + Kubernetes Tutorial
Combining Kubernetes with Terraform enables infrastructure automation and orchestration at scale. Terraform provisions the underlying resources — the cluster control plane, node pools, networking, and IAM — while Kubernetes handles the deployment and management of containerized applications running on top.
Terraform's cloud-specific providers (google_container_cluster, aws_eks_cluster, azurerm_kubernetes_cluster) create the managed control plane and node pools declaratively, alongside the VPC, subnets, and IAM roles the cluster depends on — all in the same reviewable plan.
Beyond the cluster itself, Terraform's Kubernetes and Helm providers can manage namespaces, RBAC policies, and Helm releases, though many teams draw a line here and hand workload deployment off to a GitOps tool (Argo CD, Flux) once the cluster exists, keeping cluster infrastructure and application deployment as separate concerns.
The biggest risk in this pattern is drift between what Terraform thinks exists and what's actually running, especially if engineers make manual changes via kubectl during an incident. Regular terraform plan runs in CI, even on a schedule, catch drift before it compounds into a broken apply.
Separate cluster-level infrastructure (control plane, networking, node pools) from workload-level configuration (Deployments, Services) into different Terraform state and different tooling. Pin Kubernetes and provider versions together, since a version mismatch between the two is a common source of upgrade failures.
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