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Cloud Run Module

Cloud Run management, with support for IAM roles, revision annotations and optional Eventarc trigger creation.

IAM and environment variables

IAM bindings support the usual syntax. Container environment values can be declared as key-value strings or as references to Secret Manager secrets. Both can be combined as long as there's no duplication of keys:

module "secret-manager" {
  source     = "./fabric/modules/secret-manager"
  project_id = var.project_id
  secrets = {
    credentials = {}
  }
  iam = {
    credentials = {
      "roles/secretmanager.secretAccessor" = [module.cloud_run.service_account_iam_email]
    }
  }
}

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
      env = {
        VAR1 = "VALUE1"
        VAR2 = "VALUE2"
      }
      env_from = {
        SECRET1 = {
          name = module.secret-manager.ids["credentials"]
          key  = "latest"
        }
      }
    }
  }
  iam = {
    "roles/run.invoker" = ["allUsers"]
  }
  service_account_create = true
}
# tftest modules=2 resources=5 inventory=simple.yaml e2e

Mounting secrets as volumes

module "secret-manager" {
  source     = "./fabric/modules/secret-manager"
  project_id = var.project_id
  secrets = {
    credentials = {}
  }
  versions = {
    credentials = {
      v1 = { enabled = true, data = "foo bar baz" }
    }
  }
  iam = {
    credentials = {
      "roles/secretmanager.secretAccessor" = [module.cloud_run.service_account_iam_email]
    }
  }
}


module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  name       = "hello"
  region     = var.region
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
      volume_mounts = {
        "credentials" = "/credentials"
      }
    }
  }
  service_account_create = true
  volumes = {
    credentials = {
      name        = module.secret-manager.secrets["credentials"].name
      secret_name = "credentials" # TODO: module.secret-manager.secrets["credentials"].name
      items = {
        latest = { path = "v1.txt" }
      }
    }
  }
}
# tftest modules=2 resources=5 inventory=secrets.yaml e2e

Revision annotations

Annotations can be specified via the revision_annotations variable:

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  revision_annotations = {
    autoscaling = {
      max_scale = 10
      min_scale = 1
    }
    cloudsql_unstances  = ["sql-0", "sql-1"]
    vpcaccess_connector = "foo"
    vpcaccess_egress    = "all-traffic"
  }
}
# tftest modules=1 resources=1 inventory=revision-annotations.yaml

Second generation execution environment

Second generation execution environment (gen2) can be enabled by setting the gen2_execution_environment variable to true:

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  gen2_execution_environment = true
}
# tftest modules=1 resources=1 inventory=gen2.yaml e2e

VPC Access Connector creation

If creation of a VPC Access Connector is required, use the vpc_connector_create variable which also support optional attributes for number of instances, machine type, and throughput (not shown here). The annotation to use the connector will be added automatically.

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  vpc_connector_create = {
    ip_cidr_range = "10.10.10.0/28"
    vpc_self_link = var.vpc.self_link
  }
}
# tftest modules=1 resources=2 inventory=connector.yaml e2e

Note that if you are using Shared VPC you need to specify a subnet:

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  vpc_connector_create = {
    subnet = {
      name       = "subnet-vpc-access"
      project_id = "host-project"
    }
  }
}
# tftest modules=1 resources=2 inventory=connector-shared.yaml

Traffic split

This deploys a Cloud Run service with traffic split between two revisions.

module "cloud_run" {
  source        = "./fabric/modules/cloud-run"
  project_id    = var.project_id
  region        = var.region
  name          = "hello"
  revision_name = "green"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  traffic = {
    blue  = { percent = 25 }
    green = { percent = 75 }
  }
}
# tftest modules=1 resources=1 inventory=traffic.yaml

Eventarc triggers

PubSub

This deploys a Cloud Run service that will be triggered when messages are published to Pub/Sub topics.

module "pubsub" {
  source     = "./fabric/modules/pubsub"
  project_id = var.project_id
  name       = "pubsub_sink"
}

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  eventarc_triggers = {
    pubsub = {
      topic-1 = module.pubsub.id
    }
  }
}
# tftest modules=2 resources=3 inventory=eventarc.yaml e2e

Audit logs

This deploys a Cloud Run service that will be triggered when specific log events are written to Google Cloud audit logs.

module "sa" {
  source     = "./fabric/modules/iam-service-account"
  project_id = var.project_id
  name       = "eventarc-trigger"
  iam_project_roles = {
    (var.project_id) = ["roles/eventarc.eventReceiver"]
  }
}

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  eventarc_triggers = {
    audit_log = {
      setiampolicy = {
        method  = "SetIamPolicy"
        service = "cloudresourcemanager.googleapis.com"
      }
    }
    service_account_email = module.sa.email
  }
  iam = {
    "roles/run.invoker" = [module.sa.iam_email]
  }
}
# tftest modules=2 resources=5 inventory=audit-logs.yaml

Using custom service accounts for triggers

By default Compute default service account is used to trigger Cloud Run. If you want to use custom Service Account you can either provide your own in eventarc_triggers.service_account_email or set eventarc_triggers.service_account_create to true and service account named tf-cr-trigger-${var.name} will be created with roles/run.invoker granted on this Cloud Run service.

For example using provided service account refer to Audit logs example.

Example using automatically created service account:

module "pubsub" {
  source     = "./fabric/modules/pubsub"
  project_id = var.project_id
  name       = "pubsub_sink"
}

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  eventarc_triggers = {
    pubsub = {
      topic-1 = module.pubsub.id
    }
    service_account_create = true
  }
}
# tftest modules=2 resources=5 inventory=trigger-service-account.yaml e2e

Service account

To use a custom service account managed by the module, set service_account_create to true and leave service_account set to null value (default).

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  service_account_create = true
}
# tftest modules=1 resources=2 inventory=service-account.yaml e2e

To use an externally managed service account, pass its email in service_account and leave service_account_create to false (the default).

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  service_account = var.service_account.email
}
# tftest modules=1 resources=1 inventory=service-account-external.yaml e2e

Tag bindings

Refer to the Creating and managing tags documentation for details on usage.

module "org" {
  source          = "./fabric/modules/organization"
  organization_id = var.organization_id
  tags = {
    environment = {
      description = "Environment specification."
      values = {
        dev     = {}
        prod    = {}
        sandbox = {}
      }
    }
  }
}

module "cloud_run" {
  source     = "./fabric/modules/cloud-run"
  project_id = var.project_id
  region     = var.region
  name       = "hello"
  containers = {
    hello = {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
  tag_bindings = {
    env-sandbox = module.org.tag_values["environment/sandbox"].id
  }
}
# tftest modules=2 resources=6

Variables

name description type required default
name Name used for cloud run service. string
project_id Project id used for all resources. string
region Region used for all resources. string
container_concurrency Maximum allowed in-flight (concurrent) requests per container of the revision. string null
containers Containers in arbitrary key => attributes format. map(object({…})) {}
eventarc_triggers Event arc triggers for different sources. object({…}) {}
gen2_execution_environment Use second generation execution environment. bool false
iam IAM bindings for Cloud Run service in {ROLE => [MEMBERS]} format. map(list(string)) {}
ingress_settings Ingress settings. string null
labels Resource labels. map(string) {}
prefix Optional prefix used for resource names. string null
revision_annotations Configure revision template annotations. object({…}) {}
revision_name Revision name. string null
service_account Service account email. Unused if service account is auto-created. string null
service_account_create Auto-create service account. bool false
startup_cpu_boost Enable startup cpu boost. bool false
tag_bindings Tag bindings for this service, in key => tag value id format. map(string) {}
timeout_seconds Maximum duration the instance is allowed for responding to a request. number null
traffic Traffic steering configuration. If revision name is null the latest revision will be used. map(object({…})) {}
volumes Named volumes in containers in name => attributes format. map(object({…})) {}
vpc_connector_create Populate this to create a VPC connector. You can then refer to it in the template annotations. object({…}) null

Outputs

name description sensitive
id Fully qualified service id.
service Cloud Run service.
service_account Service account resource.
service_account_email Service account email.
service_account_iam_email Service account email.
service_name Cloud Run service name.
vpc_connector VPC connector resource if created.