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Enable VPC Flow Logs for subnetworks

org.openrewrite.terraform.gcp.EnableVPCFlowLogsForSubnetworks
Ensure GCP VPC flow logs for subnets are enabled. Flow Logs capture information on IP traffic moving through network interfaces. This information can be used to monitor anomalous traffic and provide security insights.
Tags
GCP
CKV_GCP_26
terraform
Recipe source
​GitHub, Issue Tracker, Maven Central​
groupId: org.openrewrite.recipe
artifactId: rewrite-terraform
version: 2.0.6
Usage
This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-terraform:2.0.6 in your build file or by running a shell command (in which case no build changes are needed):
Gradle
Gradle init script
Maven POM
Maven Command Line
Moderne CLI
1.Add the following to your build.gradle file:
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("6.5.6")
}
​
rewrite {
    activeRecipe("org.openrewrite.terraform.gcp.EnableVPCFlowLogsForSubnetworks")
}
​
repositories {
    mavenCentral()
}
​
dependencies {
    rewrite("org.openrewrite.recipe:rewrite-terraform:2.0.6")
}
2.Run gradle rewriteRun to run the recipe.
1.Create a file named init.gradle in the root of your project.
init.gradle
initscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2" }
    }
    dependencies { classpath("org.openrewrite:plugin:6.5.6") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite("org.openrewrite.recipe:rewrite-terraform:2.0.6")
    }
    rewrite {
        activeRecipe("org.openrewrite.terraform.gcp.EnableVPCFlowLogsForSubnetworks")
    }
    afterEvaluate {
        if (repositories.isEmpty()) {
            repositories {
                mavenCentral()
            }
        }
    }
}
2.Run gradle --init-script init.gradle rewriteRun to run the recipe.
1.Add the following to your pom.xml file:
pom.xml
<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.13.0</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.terraform.gcp.EnableVPCFlowLogsForSubnetworks</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-terraform</artifactId>
            <version>2.0.6</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
</project>
2.Run mvn rewrite:run to run the recipe.
shell
mvn -U org.openrewrite.maven:rewrite-maven-plugin:run \
  -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-terraform:RELEASE \
  -Drewrite.activeRecipes=org.openrewrite.terraform.gcp.EnableVPCFlowLogsForSubnetworks
You will need to have configured the Moderne CLI on your machine before you can run the following command.
shell
mod run . --recipe EnableVPCFlowLogsForSubnetworks
Definition
Recipe List
Yaml Recipe List
​Add Terraform configuration​
resourceName: google_compute_subnetwork
content: log_config { aggregation_interval = "INTERVAL_10_MIN" flow_sampling = 0.5 metadata = "INCLUDE_ALL_METADATA" }
---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.terraform.gcp.EnableVPCFlowLogsForSubnetworks
displayName: Enable VPC Flow Logs for subnetworks
description: Ensure GCP VPC flow logs for subnets are enabled. Flow Logs capture information on IP traffic moving through network interfaces. This information can be used to monitor anomalous traffic and provide security insights.
tags:
  - GCP
  - CKV_GCP_26
  - terraform
recipeList:
  - org.openrewrite.terraform.AddConfiguration:
      resourceName: google_compute_subnetwork
      content: log_config {
  aggregation_interval = "INTERVAL_10_MIN"
  flow_sampling        = 0.5
  metadata             = "INCLUDE_ALL_METADATA"
}
​
See how this recipe works across multiple open-source repositories
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The community edition of the Moderne platform enables you to easily run recipes across thousands of open-source repositories.
Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.
Contributors
​Jonathan Schneider, Aaron Gershman, pocan101, Kun Li, Knut Wannheden, Sam Snyder​
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Last modified 9d ago