A Metrics Store that Can Actually Raise an Alarm
Alerting needs BOTH an alert manager definition and a rule group namespace; with either missing the workspace stores metrics and raises nothing while every dashboard reports it healthy. Without logging_configuration a throttled remote_write likewise produces no metrics, no error and no alert.
Verification
Static-verifiedPassed: validated and lint-clean (provider-schema-validated for AWS/Azure/GCP; Terraform-language lint elsewhere).
Conformance
- Static validation (fmt · validate · tflint)
- Security scan clean (Checkov)
- Plan tests (mocked: validation rules · outputs)
Provenance
- SHA-256 checksum
- Signature (pending)
Functional
- Live test pending (no cloud run yet)
Last verified 2026-09-13 · how we verify
Use it from the registry
terraform · opentofumodule "prometheus" {
source = "www.iac-bazaar.com/iac-bazaar/aws-prometheus/aws"
version = "1.0.0"
}Needs a registry token from /account/tokens. The module itself is free; the account is what identifies you. Full setup: registry docs.
Inputs & outputs
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Documentation
aws-prometheus
An Amazon Managed Service for Prometheus workspace that can actually raise an
alarm, and that tells you when it stops receiving metrics. Works with
Terraform and OpenTofu (>= 1.6), AWS provider >= 6.0, < 7.0.
A workspace with no alert manager definition never alerts. AMP stores
metrics and answers queries; alerting is a separate thing you have to define,
and it takes two pieces - an alert manager definition for routing, and at
least one rule group namespace for the rules that fire. With either one missing,
the workspace stores metrics and raises nothing, while every dashboard reports
it as healthy. A precondition refuses that combination unless
accept_no_alerting states that this is a metrics store only, and
alerting_configured is an output that is true only when both exist.
Without logging_configuration, a failing remote_write looks exactly like a
healthy one. Ingestion and rule-evaluation errors go to CloudWatch Logs and
nowhere else, so a misconfigured or throttled writer produces no metrics, no
error and nothing to notice. That is the worst failure mode a monitoring system
has, because the absence of alerts reads as good news.
kms_key_arn defaults to an AWS-owned key at AWS. Metrics carry hostnames,
request paths and customer identifiers far more often than people expect, so the
module takes yours.
remote_write_url is an output because the workspace endpoint is not the
ingestion URL - the path has to be appended, and getting that wrong is a
silent failure of exactly the kind above.
Verification
Static validation runs tofu fmt, init, validate, tflint and checkov.
This module has not yet had a live test, so it is published as statically
validated with its live test pending and does not carry the live-tested mark.
Usage code & full reference need an account
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- Usage
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