68 lines
2.6 KiB
Markdown
68 lines
2.6 KiB
Markdown
# Cost Management Rules — propane-will-491900-m5
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## Hard rules
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1. **Billing budget alert** must be created BEFORE any resource deployment.
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Alert thresholds: 50% / 75% / 90% / 100% of monthly budget.
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Start with 5 USD (~55 NOK) for dev/test phases.
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2. **Agent Runtimes** cost money when deployed — always undeploy via `03-teardown.sh` at end of workday.
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3. **Vertex AI Endpoints** — same rule as above.
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4. **Staging bucket lifecycle**: auto-delete objects older than 7 days.
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5. **Colab Enterprise runtimes** — terminate when not actively developing.
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6. GCP does NOT enforce a hard spend cap. Budget alerts are email-only by default.
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## Agent Runtime pricing (May 2026)
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| Resource | Free Tier/month | Paid rate |
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|---|---|---|
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| vCPU | 180,000 vCPU-seconds | ~$0.0864/vCPU-hour |
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| RAM | 360,000 GiB-seconds | ~$0.0090/GiB-hour |
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Agent Runtime does NOT bill for idle/non-running agents (pay-per-use). Always delete at end of session.
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## NEW billing lines (effective Jan 28, 2026)
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These were previously free/in preview and are now METERED:
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- **Sessions** — agent interaction contexts
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- **Memory Bank** — long-term memory storage
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- **Code Execution** — sandboxed code runs
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→ Trim session histories. Only persist high-value facts to Memory Bank. Disable Code Execution on agents that don't need it.
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## Cloud Run cost profile
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- `--min-instances=0` → scales to zero — no idle cost (use for dev/test)
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- `--min-instances=1` → keeps one warm instance — eliminates cold-start (~$4–8/month)
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- Cleanup: `gcloud run services delete SERVICE_NAME --region=us-central1 --quiet`
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## Lifecycle JSON for staging bucket
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```json
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{
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"rule": [
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{
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"action": { "type": "Delete" },
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"condition": { "age": 7 }
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}
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]
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}
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```
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```bash
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gcloud storage buckets update gs://propane-will-491900-m5-agent-staging \
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--lifecycle-file=lifecycle.json
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```
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## RAG Engine cost warning
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- If RAG Engine uses a managed Spanner instance as vector DB → billed 24/7.
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- For dev/test: prefer `us-east1` or `us-east4` until us-central1 allowlist is granted.
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- Contact: `vertex-ai-rag-engine-support@google.com` for us-central1 allowlist access.
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## Artifact Registry cleanup
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```bash
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gcloud artifacts docker images list \
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us-central1-docker.pkg.dev/propane-will-491900-m5/oavauco-docker \
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--format="value(IMAGE,DIGEST)" | tail -n +2 | \
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while read -r image digest; do
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gcloud artifacts docker images delete "${image}@${digest}" --quiet
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done
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```
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## Pub/Sub hard-stop billing automation (optional)
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Consider: Pub/Sub → Cloud Run Function to auto-disable billing if budget alert fires.
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Template: https://cloud.google.com/billing/docs/how-to/notify#cap_disable_billing_to_stop_usage
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