Shared host IPC namespace

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Metadata

Id: e94d3121-c2d1-4e34-a295-139bfeb73ea3

Cloud Provider: Kubernetes

Platform: Terraform

Severity: Medium

Category: Resource Management

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Description

Containers must not share the host IPC namespace.

This rule detects resources where the host_ipc attribute is set to true; the attribute should be undefined or false to prevent sharing the host IPC namespace.

The rule’s result includes documentId, resourceType, resourceName, searchKey, issueType, keyExpectedValue, keyActualValue, searchLine, remediation, and remediationType to help locate and remediate the issue; remediation replaces true with false.

Compliant Code Examples

resource "kubernetes_pod" "negative1" {
  metadata {
    name = "terraform-example"
  }

  spec {

    host_ipc = false

    container {
      image = "nginx:1.7.9"
      name  = "example"


      env {
        name  = "environment"
        value = "test"
      }

      port {
        container_port = 8080
      }

      liveness_probe {
        http_get {
          path = "/nginx_status"
          port = 80

          http_header {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
    }

    dns_config {
      nameservers = ["1.1.1.1", "8.8.8.8", "9.9.9.9"]
      searches    = ["example.com"]

      option {
        name  = "ndots"
        value = 1
      }

      option {
        name = "use-vc"
      }
    }

    dns_policy = "None"
  }
}

Non-Compliant Code Examples

resource "kubernetes_pod" "positive1" {
  metadata {
    name = "terraform-example"
  }

  spec {

    host_ipc = true

    container {
      image = "nginx:1.7.9"
      name  = "example"


      env {
        name  = "environment"
        value = "test"
      }

      port {
        container_port = 8080
      }

      liveness_probe {
        http_get {
          path = "/nginx_status"
          port = 80

          http_header {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
    }

    dns_config {
      nameservers = ["1.1.1.1", "8.8.8.8", "9.9.9.9"]
      searches    = ["example.com"]

      option {
        name  = "ndots"
        value = 1
      }

      option {
        name = "use-vc"
      }
    }

    dns_policy = "None"
  }
}