This component deploys the AWS Distro for OpenTelemetry (ADOT) collector as an ECS service. It collects metrics from ECS tasks and forwards them to Amazon Managed Prometheus for visualization in Grafana.
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Stack Level: Regional
This component is the ECS counterpart to the EKS Prometheus scraper/Promtail setup for Grafana monitoring. It runs the ADOT collector as a Fargate task that:
- Scrapes Prometheus metrics from ECS services via service discovery
- Collects ECS container metrics
- Forwards all metrics to Amazon Managed Prometheus
- An ECS cluster deployed via the
ecscomponent - Amazon Managed Prometheus workspace deployed via the
managed-prometheus/workspacecomponent - VPC with private subnets
components:
terraform:
ecs-adot-collector:
vars:
enabled: true
name: ecs-adot-collector
# ADOT collector image
adot_image: "public.ecr.aws/aws-observability/aws-otel-collector:latest"
# Task resources
task_cpu: 256
task_memory: 512
desired_count: 1
# Logging
log_retention_days: 30
# Prometheus scraping configuration
scrape_interval: "30s"
# ECS service discovery - discover and scrape all ECS tasks
ecs_service_discovery_enabled: true
ecs_service_discovery_port: 9090
# Network configuration
assign_public_ip: false
# Dependencies - looked up from current stack
prometheus_workspace_endpoint: !terraform.state prometheus workspace_endpoint
ecs_cluster_name: !terraform.state ecs/cluster cluster_name
vpc_id: !terraform.state vpc vpc_id
subnet_ids: !terraform.state vpc private_subnet_idsYou can add additional scrape targets beyond ECS service discovery:
vars:
scrape_configs:
- job_name: "custom-app"
targets:
- "app.internal:9090"
metrics_path: "/metrics"
scrape_interval: "15s"Important
In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.
| Name | Version |
|---|---|
| terraform | >= 1.0.0 |
| aws | >= 4.0, < 6.0.0 |
| Name | Version |
|---|---|
| aws | >= 4.0, < 6.0.0 |
| Name | Source | Version |
|---|---|---|
| iam_roles | ../account-map/modules/iam-roles | n/a |
| this | cloudposse/label/null | 0.25.0 |
| Name | Type |
|---|---|
| aws_cloudwatch_log_group.adot | resource |
| aws_ecs_service.adot | resource |
| aws_ecs_task_definition.adot | resource |
| aws_iam_role.task | resource |
| aws_iam_role.task_execution | resource |
| aws_iam_role_policy.ecs_service_discovery | resource |
| aws_iam_role_policy_attachment.prometheus_remote_write | resource |
| aws_iam_role_policy_attachment.task_execution | resource |
| aws_security_group.adot | resource |
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| additional_tag_map | Additional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id.This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration. |
map(string) |
{} |
no |
| adot_image | The ADOT collector container image | string |
"public.ecr.aws/aws-observability/aws-otel-collector:latest" |
no |
| assign_public_ip | Assign public IP to the ADOT collector task (set to false for private subnets) | bool |
false |
no |
| attributes | ID element. Additional attributes (e.g. workers or cluster) to add to id,in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the delimiterand treated as a single ID element. |
list(string) |
[] |
no |
| context | Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as null to use default value.Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged. |
any |
{ |
no |
| delimiter | Delimiter to be used between ID elements. Defaults to - (hyphen). Set to "" to use no delimiter at all. |
string |
null |
no |
| descriptor_formats | Describe additional descriptors to be output in the descriptors output map.Map of maps. Keys are names of descriptors. Values are maps of the form {<br/> format = string<br/> labels = list(string)<br/>}(Type is any so the map values can later be enhanced to provide additional options.)format is a Terraform format string to be passed to the format() function.labels is a list of labels, in order, to pass to format() function.Label values will be normalized before being passed to format() so they will beidentical to how they appear in id.Default is {} (descriptors output will be empty). |
any |
{} |
no |
| desired_count | Number of ADOT collector tasks to run | number |
1 |
no |
| ecs_cluster_name | The name of the ECS cluster to deploy the ADOT collector to | string |
n/a | yes |
| ecs_service_discovery_enabled | Enable ECS service discovery for Prometheus scraping | bool |
true |
no |
| enabled | Set to false to prevent the module from creating any resources | bool |
null |
no |
| environment | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | string |
null |
no |
| id_length_limit | Limit id to this many characters (minimum 6).Set to 0 for unlimited length.Set to null for keep the existing setting, which defaults to 0.Does not affect id_full. |
number |
null |
no |
| label_key_case | Controls the letter case of the tags keys (label names) for tags generated by this module.Does not affect keys of tags passed in via the tags input.Possible values: lower, title, upper.Default value: title. |
string |
null |
no |
| label_order | The order in which the labels (ID elements) appear in the id.Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present. |
list(string) |
null |
no |
| label_value_case | Controls the letter case of ID elements (labels) as included in id,set as tag values, and output by this module individually. Does not affect values of tags passed in via the tags input.Possible values: lower, title, upper and none (no transformation).Set this to title and set delimiter to "" to yield Pascal Case IDs.Default value: lower. |
string |
null |
no |
| labels_as_tags | Set of labels (ID elements) to include as tags in the tags output.Default is to include all labels. Tags with empty values will not be included in the tags output.Set to [] to suppress all generated tags.Notes: The value of the name tag, if included, will be the id, not the name.Unlike other null-label inputs, the initial setting of labels_as_tags cannot bechanged in later chained modules. Attempts to change it will be silently ignored. |
set(string) |
[ |
no |
| log_retention_days | CloudWatch log retention in days | number |
30 |
no |
| name | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a tag.The "name" tag is set to the full id string. There is no tag with the value of the name input. |
string |
null |
no |
| namespace | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | string |
null |
no |
| prometheus_workspace_endpoint | The Amazon Managed Prometheus workspace endpoint URL for remote write | string |
n/a | yes |
| regex_replace_chars | Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits. |
string |
null |
no |
| region | AWS Region | string |
n/a | yes |
| scrape_configs | Additional Prometheus scrape configurations for specific targets | list(object({ |
[] |
no |
| scrape_interval | Prometheus scrape interval | string |
"30s" |
no |
| security_group_ids | Additional security group IDs to attach to the ADOT collector task | list(string) |
[] |
no |
| stage | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | string |
null |
no |
| subnet_ids | List of subnet IDs for the ADOT collector task | list(string) |
n/a | yes |
| tags | Additional tags (e.g. {'BusinessUnit': 'XYZ'}).Neither the tag keys nor the tag values will be modified by this module. |
map(string) |
{} |
no |
| task_cpu | CPU units for the ADOT collector task | number |
256 |
no |
| task_memory | Memory (MiB) for the ADOT collector task | number |
512 |
no |
| tenant | ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for | string |
null |
no |
| vpc_id | VPC ID where the ECS cluster is deployed | string |
n/a | yes |
| Name | Description |
|---|---|
| cloudwatch_log_group_name | The name of the CloudWatch log group for ADOT collector logs |
| ecs_service_arn | The ARN of the ECS service running the ADOT collector |
| ecs_service_name | The name of the ECS service running the ADOT collector |
| id | The ID of this component deployment |
| security_group_id | The ID of the security group for the ADOT collector |
| task_definition_arn | The ARN of the ADOT collector task definition |
| task_execution_role_arn | The ARN of the IAM role used for ECS task execution |
| task_role_arn | The ARN of the IAM role used by the ADOT collector task |
Check out these related projects.
- aws-ecs - ECS Cluster component
- aws-managed-prometheus-workspace - Amazon Managed Prometheus workspace component
- Cloud Posse Terraform Modules - Our collection of reusable Terraform modules used by our reference architectures.
- Atmos - Atmos is like docker-compose but for your infrastructure
For additional context, refer to some of these links.
- AWS Distro for OpenTelemetry - AWS distribution of OpenTelemetry project
- Amazon Managed Prometheus - Managed Prometheus-compatible monitoring service
- cloudposse-terraform-components - Cloud Posse's upstream component library
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