A Prometheus exporter for Google Stackdriver Monitoring metrics. It acts as a proxy that requests Stackdriver API for the metric's time-series everytime prometheus scrapes it.

Download the already existing binaries for your platform:

$ ./stackdriver_exporter <flags>

Using the standard go install (you must have Go already installed in your local machine):

$ go install github.com/prometheus-community/stackdriver_exporter
$ stackdriver_exporter <flags>

To run the stackdriver exporter as a Docker container, run:

$ docker run -p 9255:9255 prometheuscommunity/stackdriver-exporter <flags>

The exporter can be deployed to an already existing Cloud Foundry environment:

$ git clone https://github.com/prometheus-community/stackdriver_exporter.git
$ cd stackdriver_exporter

Modify the included application manifest file to include the desired properties. Then you can push the exporter to your Cloud Foundry environment:

$ cf push

This exporter can be deployed using the Prometheus BOSH Release.

The Google Stackdriver Exporter uses the Google Golang Client Library, which offers a variety of ways to provide credentials. Please refer to the Google Application Default Credentials documentation to see how the credentials can be provided.

If you are using IAM roles, the roles/monitoring.viewer IAM role contains the required permissions. See the Access Control Guide for more information.

If you are still using the legacy Access scopes, the https://www.googleapis.com/auth/monitoring.read scope is required.

The exporter returns the following metrics:

Metrics gathered from Google Stackdriver Monitoring are converted to Prometheus metrics:

• Metric's names are normalized according to the Prometheus specification using the following pattern:
  1. namespace is a constant prefix (stackdriver)
  2. subsystem is the normalized monitored resource type (ie gce_instance)
  3. name is the normalized metric type (ie compute_googleapis_com_instance_cpu_usage_time)
• Labels attached to each metric are an aggregation of:
  1. the unit in which the metric value is reported
  2. the metric type labels (see Metrics List)
  3. the monitored resource labels (see Monitored Resource Types)
• For each timeseries, only the most recent data point is exported.
• Stackdriver GAUGE and DELTA metric kinds are reported as Prometheus Gauge metrics; Stackdriver CUMULATIVE metric kinds are reported as Prometheus Counter metrics.
• Only BOOL, INT64, DOUBLE and DISTRIBUTION metric types are supported, other types (STRING and MONEY) are discarded.
• DISTRIBUTION metric type is reported as a Prometheus Histogram, except the _sum time series is not supported.

If we want to get all CPU (compute.googleapis.com/instance/cpu) and Disk (compute.googleapis.com/instance/disk) metrics for all Google Compute Engine instances, we can run the exporter with the following options:

stackdriver_exporter \
  --google.project-id my-test-project \
  --monitoring.metrics-type-prefixes "compute.googleapis.com/instance/cpu,compute.googleapis.com/instance/disk"

Using extra filters:

stackdriver_exporter \
 --google.project-id my-test-project \
 --monitoring.metrics-type-prefixes='pubsub.googleapis.com/subscription' \
 --monitoring.filters='pubsub.googleapis.com/subscription:resource.labels.subscription_id=monitoring.regex.full_match("us-west4.*my-team-subs.*")'

The stackdriver_exporter collects all metrics type prefixes by default.

For advanced uses, the collection can be filtered by using a repeatable URL param called collect. In the Prometheus configuration you can use you can use this syntax under the scrape config.

params:
  collect:
  - compute.googleapis.com/instance/cpu
  - compute.googleapis.com/instance/disk

Refer to the contributing guidelines.

Apache License 2.0, see LICENSE.