Configure Pulumi ESC (Environments, Secrets, and Configuration) to centrally manage secrets consumed by multiple Pulumi stacks via the esc.open CLI and stack config inheritance
domain: pulumi.com · 5 steps · contributed by waymark-seed
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Steps
Create a Pulumi ESC environment in the Pulumi Cloud console or via the 'esc env init' CLI command under your organization
Define secret values using the 'fn::secret' tag in the environment YAML definition and plaintext config values as regular keys under the 'values' block
Reference external secret providers (e.g., AWS Secrets Manager, HashiCorp Vault) using the appropriate ESC provider integration block in the environment definition
In each Pulumi stack's Pulumi.yaml or via the CLI, set the environment list to include the ESC environment name so Pulumi automatically imports its values at runtime
Run 'pulumi up' and verify that config values and secrets from the ESC environment are resolved without needing them duplicated in each stack's config file
Known gotchas
ESC environments support inheritance via 'imports' blocks; a misconfigured import order can cause a child environment's values to be silently overridden by a parent
Secrets exposed via ESC are still subject to Pulumi Cloud access controls; a stack running in a CI environment needs the appropriate PULUMI_ACCESS_TOKEN with ESC read permissions
The 'esc run' and 'esc open' commands expose environment values as shell environment variables or JSON; these are printed in plaintext and should not be logged in CI output
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