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PLT-1651 : Add DataDog agent sidecar to ECS service module #457

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Merged
jasonvinson merged 5 commits into from
May 7, 2026
Merged

PLT-1651 : Add DataDog agent sidecar to ECS service module #457

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4052b7f
Add DataDog agent sidecar to ECS service module
jasonvinson Apr 29, 2026
e4f4001
Make datadog agent version variable, narrow secrets to only needed ap…
jasonvinson May 6, 2026
933d8f4
Merge branch 'main' into jv/datadog/PLT-1651
jasonvinson May 6, 2026
76a07bb
Pin datadog agent version
jasonvinson May 6, 2026
0c5b2df
Merge branch 'main' into jv/datadog/PLT-1651
juliareynolds-nava May 6, 2026
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58 changes: 37 additions & 21 deletions terraform/modules/service/main.tf
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Original file line number Diff line number Diff line change
@@ -1,6 +1,40 @@
locals {
service_name = var.service_name_override != null ? var.service_name_override : var.platform.service
service_name_full = "${var.platform.app}-${var.platform.env}-${local.service_name}"

app_container = {
name = local.service_name
image = var.image
readonlyRootFilesystem = true
portMappings = var.port_mappings
mountPoints = var.mount_points
secrets = var.container_secrets
environment = var.container_environment
logConfiguration = {
logDriver = "awslogs"
options = {
awslogs-group = "/aws/ecs/fargate/${var.platform.app}-${var.platform.env}/${local.service_name}"
awslogs-create-group = "true"
awslogs-region = var.platform.primary_region.name
awslogs-stream-prefix = "${var.platform.app}-${var.platform.env}"
}
}
healthCheck = var.health_check
}

datadog_container = {
name = "datadog-agent"
image = "public.ecr.aws/datadog/agent:7.50.0"
essential = false # Do not impact task health if this container fails
environment = [
{ name = "ECS_FARGATE", value = "true" },
{ name = "DD_SITE", value = "ddog-gov.com" },
{ name = "DD_APM_ENABLED", value = "true" },
{ name = "DD_LOGS_ENABLED", value = "false" }, # DD logging is currently not approved
{ name = "DD_ECS_TASK_COLLECTION_ENABLED", value = "true" }
]
secrets = [{ name = "DD_API_KEY", valueFrom = "/${var.platform.app}/${var.platform.env}/datadog/agents/api_key" }]
}
}

resource "aws_ecs_task_definition" "this" {
Expand All @@ -11,27 +45,9 @@ resource "aws_ecs_task_definition" "this" {
requires_compatibilities = ["FARGATE"]
cpu = var.cpu
memory = var.memory
container_definitions = nonsensitive(jsonencode([
{
name = local.service_name
image = var.image
readonlyRootFilesystem = true
portMappings = var.port_mappings
mountPoints = var.mount_points
secrets = var.container_secrets
environment = var.container_environment
logConfiguration = {
logDriver = "awslogs"
options = {
awslogs-group = "/aws/ecs/fargate/${var.platform.app}-${var.platform.env}/${local.service_name}"
awslogs-create-group = "true"
awslogs-region = var.platform.primary_region.name
awslogs-stream-prefix = "${var.platform.app}-${var.platform.env}"
}
}
healthCheck = var.health_check
}
]))

# Concat the main container with the datadog container
container_definitions = nonsensitive(jsonencode(concat([local.app_container], [local.datadog_container])))

runtime_platform {
operating_system_family = "LINUX"
Expand Down