Utility for scraping Prometheus metrics from a Prometheus client endpoint and publishing them to CloudWatch
This project is part of our comprehensive "SweetOps" approach towards DevOps.
It's 100% Open Source and licensed under the APACHE2.
kube-state-metrics to CloudWatch
NOTE: The module accepts parameters as command-line arguments or as ENV variables (or any combination of command-line arguments and ENV vars). Command-line arguments take precedence over ENV vars
| Command-line argument | ENV var | Description |
|---|---|---|
| aws_access_key_id | AWS_ACCESS_KEY_ID | AWS access key Id with permissions to publish CloudWatch metrics |
| aws_secret_access_key | AWS_SECRET_ACCESS_KEY | AWS secret access key with permissions to publish CloudWatch metrics |
| cloudwatch_namespace | CLOUDWATCH_NAMESPACE | CloudWatch Namespace |
| cloudwatch_region | CLOUDWATCH_REGION | CloudWatch AWS Region |
| cloudwatch_publish_timeout | CLOUDWATCH_PUBLISH_TIMEOUT | CloudWatch publish timeout in seconds |
| prometheus_scrape_interval | PROMETHEUS_SCRAPE_INTERVAL | Prometheus scrape interval in seconds |
| prometheus_scrape_url | PROMETHEUS_SCRAPE_URL | The URL to scrape Prometheus metrics from |
| cert_path | CERT_PATH | Path to SSL Certificate file (when using SSL for prometheus_scrape_url) |
| keyPath | KEY_PATH | Path to Key file (when using SSL for prometheus_scrape_url) |
| accept_invalid_cert | ACCEPT_INVALID_CERT | Accept any certificate during TLS handshake. Insecure, use only for testing |
| additional_dimension | ADDITIONAL_DIMENSION | Additional dimension specified by NAME=VALUE |
| replace_dimensions | REPLACE_DIMENSIONS | Replace dimensions specified by NAME=VALUE,... |
| include_metrics | INCLUDE_METRICS | Only publish the specified metrics (comma-separated list of glob patterns) |
| exclude_metrics | EXCLUDE_METRICS | Never publish the specified metrics (comma-separated list of glob patterns) |
| include_dimensions_for_metrics | INCLUDE_DIMENSIONS_FOR_METRICS | Only publish the specified dimensions for metrics (semi-colon-separated key values of comma-separated dimensions of METRIC=dim1,dim2;, e.g. 'flink_jobmanager=job_id') |
| exclude_dimensions_for_metrics | EXCLUDE_DIMENSIONS_FOR_METRICS | Never publish the specified dimensions for metrics (semi-colon-separated key values of comma-separated dimensions of METRIC=dim1,dim2;, e.g. 'flink_jobmanager=job,host;zk_up=host,pod;') |
| force_high_res | FORCE_HIGH_RES | Whether publish all metrics with high resolution to Cloudwatch or only those labeled with __cw_high_res. |
| listenAddress | LISTEN_ADDRESS | Address to expose metrics. Default: 9698 |
| metricsPath | METRICS_PATH | Path under which to expose metrics. Default: /metrics |
| environmentName | environmentName | Environment name from where the CloudWatch metrics come from |
| infraShortname | infraShortname | Infrastructure shortname from where the CloudWatch metrics come from. |
NOTE: If AWS credentials are not provided in the command-line arguments (aws_access_key_id and aws_secret_access_key)
or ENV variables (AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY),
the chain of credential providers will search for credentials in the shared credential file and EC2 Instance Roles.
This is useful when deploying the module in AWS on Kubernetes with kube2iam,
which will provide IAM credentials to containers running inside a Kubernetes cluster, allowing the module to assume an IAM Role with permissions
to publish metrics to CloudWatch.
go get
CGO_ENABLED=0 go build -v -o "./dist/bin/prometheus-to-cloudwatch" *.goexport AWS_ACCESS_KEY_ID=XXXXXXXXXXXXXXXXXXXXXXX
export AWS_SECRET_ACCESS_KEY=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
export CLOUDWATCH_NAMESPACE=kube-state-metrics
export CLOUDWATCH_REGION=us-east-1
export CLOUDWATCH_PUBLISH_TIMEOUT=5
export PROMETHEUS_SCRAPE_INTERVAL=30
export PROMETHEUS_SCRAPE_URL=http://xxxxxxxxxxxx:8080/metrics
export CERT_PATH=""
export KEY_PATH=""
export ACCEPT_INVALID_CERT=true
# Optionally, restrict the subset of metrics to be exported to CloudWatch
# export INCLUDE_METRICS='jvm_*'
# export EXCLUDE_METRICS='jvm_memory_*,jvm_buffer_*'
# export INCLUDE_DIMENSIONS_FOR_METRICS='jvm_memory_*=pod_id'
# export EXCLUDE_DIMENSIONS_FOR_METRICS='jvm_memory_*=pod;jvm_buffer=job,pod'
./dist/bin/prometheus-to-cloudwatchNOTE: it will download all Go dependencies and then build the program inside the container (see Dockerfile)
docker build --tag prometheus-to-cloudwatch --no-cache=true .docker run -i --rm \
-e AWS_ACCESS_KEY_ID=XXXXXXXXXXXXXXXXXXXXXXX \
-e AWS_SECRET_ACCESS_KEY=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX \
-e CLOUDWATCH_NAMESPACE=kube-state-metrics \
-e CLOUDWATCH_REGION=us-east-1 \
-e CLOUDWATCH_PUBLISH_TIMEOUT=5 \
-e PROMETHEUS_SCRAPE_INTERVAL=30 \
-e PROMETHEUS_SCRAPE_URL=http://xxxxxxxxxxxx:8080/metrics \
-e CERT_PATH="" \
-e KEY_PATH="" \
-e ACCEPT_INVALID_CERT=true \
-e INCLUDE_METRICS="" \
-e EXCLUDE_METRICS="" \
-e INCLUDE_DIMENSIONS_FOR_METRICS="" \
-e EXCLUDE_DIMENSIONS_FOR_METRICS="" \
prometheus-to-cloudwatchTo run on Kubernetes, we will deploy two Helm charts
-
kube-state-metrics - to generates metrics about the state of various objects inside the cluster, such as deployments, nodes and pods
-
prometheus-to-cloudwatch - to scrape metrics from
kube-state-metricsand publish them to CloudWatch
Install kube-state-metrics chart
helm install stable/kube-state-metricsFind the running services
kubectl get servicesCopy the name of the kube-state-metrics service (e.g. gauche-turtle-kube-state-metrics) into the ENV var PROMETHEUS_SCRAPE_URL in values.yaml.
It should look like this:
PROMETHEUS_SCRAPE_URL: "http://gauche-turtle-kube-state-metrics:8080/metrics"Deploy prometheus-to-cloudwatch chart
cd chart
helm install .prometheus-to-cloudwatch will start scraping the /metrics endpoint of the kube-state-metrics service and send the Prometheus metrics to CloudWatch
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Check out these related projects.
- Prometheus Operator - Prometheus Operator creates/configures/manages Prometheus clusters atop Kubernetes
- terraform-aws-cloudwatch-logs - Terraform Module to Provide a CloudWatch Logs Endpoint
- terraform-aws-ecs-web-app - Terraform module that implements a web app on ECS and supports autoscaling, CI/CD, monitoring, ALB integration, and much more.
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