buildkite/buildkite-agent-metrics

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# Buildkite Agent Metrics A command-line tool for collecting [Buildkite](https://buildkite.com/) agent metrics, focusing on enabling auto-scaling. Currently [AWS Cloudwatch](http://aws.amazon.com/cloudwatch/), [StatsD](https://github.com/etsy/statsd), [Prometheus](https://prometheus.io), [Stackdriver](https://cloud.google.com/stackdriver/), [New Relic](https://newrelic.com/products/insights), and [OpenTelemetry](https://opentelemetry.io) are supported. [![Build status](https://badge.buildkite.com/3642e233e25707a91db3a9e7d61a6fd46e1352c161605b56cf.svg)](https://buildkite.com/buildkite/buildkite-agent-metrics) ## Installing The latest binary is available from [Github Releases](https://github.com/buildkite/buildkite-agent-metrics/releases). ### Container images We also publish Docker Images to [Amazon Public ECR](https://gallery.ecr.aws/buildkite/agent-metrics). These are based on Alpine Linux. You can run the container with a Docker CLI command such as: ```shell docker run --rm public.ecr.aws/buildkite/agent-metrics:latest \ -token abc123 \ -interval 30s \ -queue my-queue ``` ### AWS Lambdas We also publish an AWS Lambda to S3 in region us-east-1. Each version is published to `s3://buildkite-lambdas/buildkite-agent-metrics/v${VERSION}/handler.zip` and is also available from [Github Releases](https://github.com/buildkite/buildkite-agent-metrics/releases) as `handler.zip`. Example ```shell aws lambda create-function \ --function-name buildkite-agent-metrics \ --memory 128 \ --role arn:aws:iam::account-id:role/execution_role \ --runtime provided.al2 \ --code S3Bucket=buildkite-lambdas,S3Key=buildkite-agent-metrics/v5.10.0/handler.zip \ --handler handler ``` ### Installing from source Go can be used to download and build the binary from source: ```bash go install github.com/buildkite/buildkite-agent-metrics/v5@latest ``` This typically installs the `buildkite-agent-metrics` binary into `~/go/bin`. ## Running Several running modes are supported. All of them require an Agent Registration Token, found on the [Buildkite Agents page](https://buildkite.com/organizations/-/agents). ### Running as a Daemon The simplest deployment is to run as a long-running daemon that collects metrics across all queues in an organization. ```shell buildkite-agent-metrics -token abc123 -interval 30s ``` Restrict it to a single queue with `-queue`: ```shell buildkite-agent-metrics -token abc123 -interval 30s -queue my-queue ``` Restrict it to multiple queues by repeating `-queue`: ```shell buildkite-agent-metrics -token abc123 -interval 30s -queue my-queue1 -queue my-queue2 ``` When using clusters, you can pass a cluster registration token to gather metrics only for that cluster: ```shell buildkite-agent-metrics -token clustertoken ... ``` You can repeat `-token` to gather metrics for multiple clusters: ```shell buildkite-agent-metrics -token clusterAtoken -token clusterBtoken ... ``` ### Running as an AWS Lambda An AWS Lambda bundle is created and published as part of the build process. The Lambda will require the [`cloudwatch:PutMetricData`](https://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/publishingMetrics.html) IAM permission. It requires a `provided.al2` environment and respects the following env vars: - `BUILDKITE_BACKEND` : The name of the backend to use (e.g. `cloudwatch`, `statsd`, `newrelic`, `opentelemetry`. For the lambda, `prometheus` and `stackdriver` are not supported). - `BUILDKITE_QUEUE` : A comma separated list of Buildkite queues to process (e.g. `backend-deploy,ui-deploy`). - `BUILDKITE_QUIET` : A boolean specifying that only `ERROR` log lines must be printed. This accepts either `1` or `true` to enable. - `BUILDKITE_CLOUDWATCH_DIMENSIONS` : A comma separated list in the form of `Key=Value,Other=Value` containing the Cloudwatch dimensions to index metrics under. - `BUILDKITE_CLOUDWATCH_HIGH_RESOLUTION` : Whether to enable [High-Resolution Metrics](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/publishingMetrics.html#high-resolution-metrics) which incurs additional charges. This accepts either `1` or `true` to enable. To override the endpoint use the following env var: - `BUILDKITE_AGENT_ENDPOINT`: Endpoint URL of the Buildkite Agent API (default https://agent.buildkite.com/v3) To adjust timeouts, and connection pooling in the HTTP client use the following env vars: - `BUILDKITE_AGENT_METRICS_TIMEOUT` : Timeout, in seconds, TLS handshake and idle connections, for HTTP requests, to Buildkite API (default 15). - `BUILDKITE_AGENT_METRICS_MAX_IDLE_CONNS` : Maximum number of idle (keep-alive) HTTP connections for Buildkite Agent API. Zero means no limit, -1 disables pooling (default 100). To assist with debugging the following env vars are provided: - `BUILDKITE_AGENT_METRICS_DEBUG` : A boolean which enables debug logging. This accepts either `1` or `true` to enable. - `BUILDKITE_AGENT_METRICS_DEBUG_HTTP` : A boolean which enables printing of the HTTP responses. This accepts either `1` or `true` to enable. Additionally, one of the following groups of environment variables must be set in order to define how the Lambda function should obtain the required Buildkite Agent API token: #### Option 1 - Provide the token(s) as plain-text - `BUILDKITE_AGENT_TOKEN` : The Buildkite Agent API token to use. You can supply multiple tokens comma-separated. #### Option 2 - Retrieve token from AWS Systems Manager - `BUILDKITE_AGENT_TOKEN_SSM_KEY` : The parameter name which contains the token value in AWS Systems Manager. You can supply multiple names comma-separated. **Note**: Parameters stored as `String` and `SecureString` are currently supported. #### Option 3 - Retrieve token from AWS Secrets Manager - `BUILDKITE_AGENT_SECRETS_MANAGER_SECRET_ID`: The id of the secret which contains the token value in AWS Secrets Manager. You can supply multiple ids comma-separated. - (Optional) `BUILDKITE_AGENT_SECRETS_MANAGER_JSON_KEY`: The JSON key containing the token value in the secret JSON blob. **Note 1**: Both `SecretBinary` and `SecretString` are supported. In the case of `SecretBinary`, the secret payload will be automatically decoded and returned as a plain-text string. **Note 2**: `BUILDKITE_AGENT_SECRETS_MANAGER_JSON_KEY` can be used on secrets of type `SecretBinary` only if their binary payload corresponds to a valid JSON object containing the provided key. ```bash aws lambda create-function \ --function-name buildkite-agent-metrics \ --memory 128 \ --role arn:aws:iam::account-id:role/execution_role \ --runtime provided.al2 \ --code S3Bucket=buildkite-lambdas,S3Key=buildkite-agent-metrics/v5.10.0/handler.zip \ --handler handler ``` ### Building and running the container You can build a Docker image for the `buildkite-agent-metrics` from a clone of the source repo with the following: ```shell docker build -t buildkite-agent-metrics . ``` This will create a local docker image named as `buildkite-agent-metrics` that you can tag and push to your own registry. You can use the command-line arguments in a docker execution in the same way as described before: ```shell docker run --rm buildkite-agent-metrics \ -token abc123 \ -interval 30s \ -queue my-queue ``` ### Supported command line flags ```shell $ buildkite-agent-metrics --help Usage of buildkite-agent-metrics: -backend string Specify the backend to use: cloudwatch, newrelic, prometheus, stackdriver, statsd, opentelemetry (default "cloudwatch") -cloudwatch-dimensions string Cloudwatch dimensions to index metrics under, in the form of Key=Value, Other=Value -cloudwatch-region string AWS Region to connect to, defaults to $AWS_REGION or us-east-1 -debug Show debug output -debug-http Show full http traces -dry-run Whether to only print metrics -endpoint string A custom Buildkite Agent API endpoint (default "https://agent.buildkite.com/v3") -interval duration Update metrics every interval, rather than once -cloudwatch-high-resolution If `-interval` is less than 60 seconds send metrics to CloudWatch as [High-Resolution Metrics](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/publishingMetrics.html#high-resolution-metrics) which incurs additional charges. -max-idle-conns int Maximum number of idle (keep-alive) HTTP connections for Buildkite Agent API. Zero means no limit, -1 disables connection reuse. (default 100) -newrelic-app-name string New Relic application name for metric events -newrelic-license-key string New Relic license key for publishing events -prometheus-addr string Prometheus metrics transport bind address (default ":8080") -prometheus-include-default-metrics Include Go runtime, process, and HTTP handler metrics in the Prometheus endpoint (default true) -prometheus-path string Prometheus metrics transport path (default "/metrics") -queue value Specific queues to process -quiet Only print errors -stackdriver-projectid string Specify Stackdriver Project ID -statsd-host string Specify the StatsD server (default "127.0.0.1:8125") -statsd-tags Whether your StatsD server supports tagging like Datadog -timeout int Timeout, in seconds, for HTTP requests to Buildkite API (default 15) -token value Buildkite Agent registration tokens. At least one is required. Multiple cluster tokens can be used to gather metrics for multiple clusters. -version Show the version ``` ## Backends By default metrics will be submitted to CloudWatch but the backend can be switched to other systems using the `-backend` argument. ### CloudWatch The CloudWatch backend supports the following arguments: - `-cloudwatch-dimensions`: A optional custom dimension in the form of `Key=Value, Key=Value` ### StatsD (Datadog) The StatsD backend supports the following arguments: - `-statsd-host HOST`: The StatsD host and port (defaults to `127.0.0.1:8125`). - `-statsd-tags`: Some StatsD servers like the agent provided by Datadog support tags. If specified, metrics will be tagged by `queue` otherwise metrics will include the queue name in the metric. Only enable this option if you know your StatsD server supports tags. ### Prometheus The Prometheus backend supports the following arguments: - `-prometheus-addr`: The local address to listen on (defaults to `:8080`). - `-prometheus-include-default-metrics`: Whether to include Go runtime, process, and HTTP handler metrics (defaults to `true`). Use `-prometheus-include-default-metrics=false` to expose only Buildkite metrics. - `-prometheus-path`: The path under `prometheus-addr` to expose metrics on (defaults to `/metrics`). ### Stackdriver The Stackdriver backend supports the following arguments: - `-stackdriver-projectid`: The Google Cloud Platform project to report metrics for. ### New Relic The New Relic backend supports the following arguments: - `-newrelic-app-name`: String for the New Relic app name - `-newrelic-license-key`: The New Relic license key. Must be of type `INGEST` ### OpenTelemetry The OpenTelemetry backend allows you to send metrics and traces to any OpenTelemetry-compatible using OTLP. #### Configuration **Command Line Flags:** - `--backend opentelemetry`: Select OpenTelemetry as the metrics backend **Environment Variables:** - `OTEL_SERVICE_NAME`: OpenTelemetry service name (default: `buildkite-agent-metrics`) - `OTEL_EXPORTER_OTLP_PROTOCOL`: Protocol to use: `http/protobuf` or `grpc` (default: `http/protobuf`) - `OTEL_EXPORTER_OTLP_ENDPOINT`: Endpoint to send metrics to (default: `http://localhost:4318` for `http/protobuf` and `http://localhost:4317` for `grpc`) - `OTEL_EXPORTER_OTLP_HEADERS`: Headers to send with each request (default: none) See OpenTelemetry SDK documentation for more complete list of supported environment variables. - https://opentelemetry.io/docs/specs/otel/configuration/sdk-environment-variables/ - https://opentelemetry.io/docs/specs/otel/protocol/exporter/#endpoint-urls-for-otlphttp #### Usage Example ```bash export OTEL_SERVICE_NAME="buildkite-metrics" export OTEL_EXPORTER_OTLP_ENDPOINT="https://your-otlp-endpoint.com:4317" export OTEL_EXPORTER_OTLP_HEADERS="authorization=your-api-key" export OTEL_EXPORTER_OTLP_PROTOCOL="grpc" buildkite-agent-metrics \ --backend opentelemetry \ --token $YOUR_BUILDKITE_TOKEN \ --interval 30s ``` #### What Gets Sent **Metrics:** The following metrics are exported to OpenTelemetry: - `buildkite.jobs.scheduled`: Number of scheduled jobs - `buildkite.jobs.running`: Number of running jobs - `buildkite.jobs.unfinished`: Number of unfinished jobs - `buildkite.jobs.waiting`: Number of waiting jobs - `buildkite.agents.idle`: Number of idle agents - `buildkite.agents.busy`: Number of busy agents - `buildkite.agents.total`: Total number of agents - `buildkite.agents.busy_percentage`: Percentage of busy agents - `buildkite.collection.duration`: Time taken to collect metrics All metrics include attributes for: - `org`: Buildkite organization - `cluster`: Buildkite cluster name - `queue`: Queue name (for per-queue metrics) **Traces:** Distributed tracing is provided for: - Metrics collection operations - HTTP requests to the Buildkite API - Backend metric publishing Each trace includes relevant attributes such as organization, cluster, and queue information. **Logs:** Structured logging is integrated with OpenTelemetry: - Error events are recorded as span events with error details - Info events provide operational context - All logs include relevant attributes and are correlated with traces #### Troubleshooting **Check if OpenTelemetry is enabled:** Look for this log message on startup: ``` OpenTelemetry backend initialized successfully ``` **Compatibility:** - OpenTelemetry backend can be used as a complete replacement for other backends - Supports both HTTP and gRPC OTLP protocols - Works with any OpenTelemetry-compatible system (Jaeger, Honeycomb, HyperDX, Grafana Cloud, etc.) - No impact on other backend functionality when not selected ## Upgrading from v2 to v3 1. The `-org` argument is no longer needed 2. The `-token` argument is now an _Agent Registration Token_ — the same used in the Buildkite Agent configuration file, and found on the [Buildkite Agents page](https://buildkite.com/organizations/-/agents). 3. Build and pipeline metrics have been removed, focusing on agents and jobs by queue for auto–scaling. If you have a compelling reason to gather build or pipeline metrics please continue to use the [previous version](https://github.com/buildkite/buildkite-agent-metrics/releases/tag/v2.1.0) or [open an issue](https://github.com/buildkite/buildkite-agent-metrics/issues) with details. ## Development This tool is built with Go 1.20+ and assumes [Go Modules](https://github.com/golang/go/wiki/Modules) by default. You can build and run the binary tool locally with Go installed: ```shell go run *.go -token [buildkite agent registration token] ``` Currently this will publish metrics to Cloudwatch under the custom metric prefix of `Buildkite`, using AWS credentials from your environment. The machine will require the [`cloudwatch:PutMetricData`](https://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/publishingMetrics.html) IAM permission. ### The `token` package It is an abstraction layer enabling the retrieval of a Buildkite Agent API token from different sources. The current supported sources are: - AWS Systems Manager (a.k.a parameter store). - AWS Secrets Manager. - OS environment variable. #### Tests All the tests for AWS dependant resources require their corresponding auto-generated mocks. Thus, before running them, you need to generate such mocks by executing: ```bash go generate token/secretsmanager_test.go go generate token/ssm_test.go ``` ## Metrics The following metrics are gathered when no specific queue is supplied: ```plain Buildkite > (Org) > RunningJobsCount Buildkite > (Org) > ScheduledJobsCount Buildkite > (Org) > UnfinishedJobsCount Buildkite > (Org) > WaitingJobsCount Buildkite > (Org) > IdleAgentsCount Buildkite > (Org) > BusyAgentsCount Buildkite > (Org) > BusyAgentPercentage Buildkite > (Org) > TotalAgentsCount Buildkite > (Org, Queue) > RunningJobsCount Buildkite > (Org, Queue) > ScheduledJobsCount Buildkite > (Org, Queue) > UnfinishedJobsCount Buildkite > (Org, Queue) > WaitingJobsCount Buildkite > (Org, Queue) > IdleAgentsCount Buildkite > (Org, Queue) > BusyAgentsCount Buildkite > (Org, Queue) > BusyAgentPercentage Buildkite > (Org, Queue) > TotalAgentsCount ``` When a queue is specified, only that queue's metrics are published. We send metrics for Jobs in the following states: - **Scheduled**: the job hasn't been assigned to an agent yet. If you have agent capacity, this value should be close to 0. - **Waiting**: the job is known to exist but isn't schedulable yet due to dependencies, `wait` statements, etc. This information is mostly useful to an autoscaler, since it represents work that will start soon. - **Running**: the jobs that are currently in the "running" state. These jobs have been picked up by agents and are actively being executed. - **Unfinished**: the jobs that have been scheduled but have not yet finished. This count includes jobs that are in the states "running" and "scheduled". Detailed explanations about some of the metrics: **RunningJobsCount**: This metric counts the number of jobs that are currently in the "running" state. These jobs have been picked up by agents and are actively being executed. **UnfinishedJobsCount**: This metric includes all jobs that have been scheduled but have not yet finished. This includes jobs in the "running" and "scheduled" states. **ScheduledJobsCount**: This metric counts jobs that have been scheduled but are not yet started by any agent. These jobs are in the queue, waiting for an available agent to start executing them. **WaitingJobsCount**: This metric counts jobs that are in a "waiting" state, which could mean they are waiting on dependencies to resolve, on other jobs to finish, or on any other condition that needs to be met before they can be scheduled. ## License See [LICENSE.md](LICENSE.md) (MIT)

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buildkite-agent-metrics-release

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原文の言語: 英語

2026-06-01

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