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![Chris Stephens](/assets/img/avatar_default.png)
[According to log sink documentation](https://cloud.google.com/logging/docs/reference/v2/rest/v2/sinks/update) the api will eventually throw an error if update mask isn't provided. The default specified here is what the api is currently using when an empty mask is passed.
130 lines
4.6 KiB
Markdown
130 lines
4.6 KiB
Markdown
---
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layout: "google"
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page_title: "Google: google_logging_project_sink"
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sidebar_current: "docs-google-logging-project-sink"
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description: |-
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Manages a project-level logging sink.
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---
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# google\_logging\_project\_sink
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Manages a project-level logging sink. For more information see
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[the official documentation](https://cloud.google.com/logging/docs/),
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[Exporting Logs in the API](https://cloud.google.com/logging/docs/api/tasks/exporting-logs)
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and
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[API](https://cloud.google.com/logging/docs/reference/v2/rest/).
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~> **Note:** You must have [granted the "Logs Configuration Writer"](https://cloud.google.com/logging/docs/access-control) IAM role (`roles/logging.configWriter`) to the credentials used with terraform.
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~> **Note** You must [enable the Cloud Resource Manager API](https://console.cloud.google.com/apis/library/cloudresourcemanager.googleapis.com)
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## Example Usage
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```hcl
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resource "google_logging_project_sink" "my-sink" {
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name = "my-pubsub-instance-sink"
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# Can export to pubsub, cloud storage, or bigtable
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destination = "pubsub.googleapis.com/projects/my-project/topics/instance-activity"
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# Log all WARN or higher severity messages relating to instances
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filter = "resource.type = gce_instance AND severity >= WARN"
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# Use a unique writer (creates a unique service account used for writing)
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unique_writer_identity = true
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}
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```
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A more complete example follows: this creates a compute instance, as well as a log sink that logs all activity to a
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cloud storage bucket. Because we are using `unique_writer_identity`, we must grant it access to the bucket. Note that
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this grant requires the "Project IAM Admin" IAM role (`roles/resourcemanager.projectIamAdmin`) granted to the credentials
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used with terraform.
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```hcl
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# Our logged compute instance
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resource "google_compute_instance" "my-logged-instance" {
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name = "my-instance"
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machine_type = "n1-standard-1"
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zone = "us-central1-a"
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boot_disk {
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initialize_params {
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image = "debian-cloud/debian-9"
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}
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}
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network_interface {
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network = "default"
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access_config {}
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}
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}
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# A bucket to store logs in
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resource "google_storage_bucket" "log-bucket" {
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name = "my-unique-logging-bucket"
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}
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# Our sink; this logs all activity related to our "my-logged-instance" instance
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resource "google_logging_project_sink" "instance-sink" {
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name = "my-instance-sink"
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destination = "storage.googleapis.com/${google_storage_bucket.log-bucket.name}"
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filter = "resource.type = gce_instance AND resource.labels.instance_id = \"${google_compute_instance.my-logged-instance.instance_id}\""
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unique_writer_identity = true
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}
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# Because our sink uses a unique_writer, we must grant that writer access to the bucket.
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resource "google_project_iam_binding" "log-writer" {
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role = "roles/storage.objectCreator"
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members = [
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"${google_logging_project_sink.instance-sink.writer_identity}",
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]
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}
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```
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## Argument Reference
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The following arguments are supported:
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* `name` - (Required) The name of the logging sink.
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* `destination` - (Required) The destination of the sink (or, in other words, where logs are written to). Can be a
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Cloud Storage bucket, a PubSub topic, or a BigQuery dataset. Examples:
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```
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"storage.googleapis.com/[GCS_BUCKET]"
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"bigquery.googleapis.com/projects/[PROJECT_ID]/datasets/[DATASET]"
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"pubsub.googleapis.com/projects/[PROJECT_ID]/topics/[TOPIC_ID]"
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```
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The writer associated with the sink must have access to write to the above resource.
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* `filter` - (Optional) The filter to apply when exporting logs. Only log entries that match the filter are exported.
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See [Advanced Log Filters](https://cloud.google.com/logging/docs/view/advanced_filters) for information on how to
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write a filter.
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* `project` - (Optional) The ID of the project to create the sink in. If omitted, the project associated with the provider is
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used.
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* `unique_writer_identity` - (Optional) Whether or not to create a unique identity associated with this sink. If `false`
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(the default), then the `writer_identity` used is `serviceAccount:cloud-logs@system.gserviceaccount.com`. If `true`,
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then a unique service account is created and used for this sink. If you wish to publish logs across projects, you
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must set `unique_writer_identity` to true.
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## Attributes Reference
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In addition to the arguments listed above, the following computed attributes are
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exported:
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* `writer_identity` - The identity associated with this sink. This identity must be granted write access to the
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configured `destination`.
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## Import
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Project-level logging sinks can be imported using their URI, e.g.
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```
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$ terraform import google_logging_project_sink.my_sink projects/my-project/sinks/my-sink
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```
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