Invalid image

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Metadata

Id: e76cca7c-c3f9-4fc9-884c-b2831168ebd8

Cloud Provider: Kubernetes

Platform: Terraform

Severity: Low

Category: Supply-Chain

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Description

The image attribute must be set and must not be empty or equal to latest. The rule evaluates both container and init_container entries in resource specs and supports array and object forms. It reports MissingAttribute when image is absent and IncorrectValue when image is empty or set to latest.

Compliant Code Examples

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

  spec {
    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 {
    container {
      image = ""
      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"
  }
}

resource "kubernetes_pod" "positive2" {
  metadata {
    name = "terraform-example"
  }

  spec {
    container {
      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"
  }
}


resource "kubernetes_pod" "positive3" {
  metadata {
    name = "terraform-example"
  }

  spec {
    container = [
      {
        image = "latest"
        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"
  }
}