ECS Service Connect Access Logs Missing

What this rule checks

Detects ECS services with Service Connect enabled but no access log configuration, leaving inter-service traffic unaudited.

How to fix it

1. 1Set ServiceConnectConfiguration.LogConfiguration with a LogDriver such as awslogs
2. 2Send Service Connect logs to a CloudWatch log group with a retention policy
3. 3Confirm log group encryption is configured for sensitive workloads

import { App, Stack } from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as ecs from 'aws-cdk-lib/aws-ecs';

// FLAGGED: Service Connect enabled but no access logging.
new ecs.CfnService(this, 'Service', {
  cluster: 'app-cluster',
  taskDefinition: 'app-task:1',
  serviceConnectConfiguration: {
    enabled: true,
    namespace: 'app.local',
  },
});

import { App, Stack } from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as ecs from 'aws-cdk-lib/aws-ecs';

// FIXED: Service Connect proxy logs go to CloudWatch.
new ecs.CfnService(this, 'Service', {
  cluster: 'app-cluster',
  taskDefinition: 'app-task:1',
  serviceConnectConfiguration: {
    enabled: true,
    namespace: 'app.local',
    logConfiguration: {
      logDriver: 'awslogs',
      options: {
        'awslogs-group': '/ecs/service-connect',
        'awslogs-region': 'us-east-1',
        'awslogs-stream-prefix': 'sc',
      },
    },
  },
});

CDK Insights pinpoints the exact file and line in your CDK source for every finding, so you can jump straight to the fix.

Affected resource types

Intentional? Suppress this finding

Sometimes a flag is deliberate — a genuinely public endpoint, say. You can dismiss ecs-service-connect-access-logs-missing and the reason is kept in the report, not silently hidden.

In .cdk-insights.json:

{
  "ignoreRules": [
    { "id": "ecs-service-connect-access-logs-missing", "reason": "Why this is intentional" }
  ]
}

Or inline in your CDK code:

Validations.of(scope).acknowledge({
  id: 'cdk-insights::ecs-service-connect-access-logs-missing',
  reason: 'Why this is intentional',
});

Use the rule ID ecs-service-connect-access-logs-missing shown above — not the CDK-* ID from SARIF / GitHub code scanning. To dismiss every finding on one construct instead, use ignorePaths. Suppression docs →

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