Cloud Spanner Instance & Database

gcp-spanner

Cloud Spanner — a regional instance at the smallest billable size (100 processing units, 1/10th of a node) plus a database with optional starter schema. Works with Terraform and OpenTofu (>= 1.6), Google provider >= 7.0, < 8.0.

Cost-aware, secure defaults:

• processing_units = 100 (the floor) — sub-node sizing, not num_nodes
• edition = "STANDARD" (cheapest edition that fits 100 PU)
• Database deletion_protection = true
• enable_drop_protection exposed (off by default; turn on for prod databases)

Protection knobs (the two resources differ)

Resource	Native protection	This module exposes
google_spanner_instance	no deletion_protection	force_destroy (clears backups on destroy) + default_backup_schedule_type
google_spanner_database	deletion_protection (bool)	deletion_protection + enable_drop_protection

The instance keeps the provider default deletion_policy (DELETE), so destroy removes it; force_destroy = true ensures backups never block that.

Requirements

• Terraform or OpenTofu >= 1.6
• hashicorp/google >= 7.0, < 8.0
• APIs: spanner.googleapis.com

Verification

Static-validated (fmt, validate, tflint). Live apply/destroy testing pending cloud sandbox availability — see catalog status.

License

Commercial — IaC Bazaar EULA. © IaC Bazaar. Original work (not derived from a third-party module).