enhance conftest - mirror rego

.drone.yml

@@ -2,7 +2,11 @@ kind: pipeline
 name: conftest
 
 steps:
-- name: deprek8
-  image: quay.io/swade1987/deprek8ion:1.1.9
+- name: policies
+  image: instrumenta/conftest:latest
   commands:
-  - conftest test -p /policies ./
+  - conftest test -p ./_test/policies ./
+- name: deprek8
+  image: instrumenta/conftest:latest
+  commands:
+  - conftest test -p ./_test/deprek8 ./

_test/README.md

@@ -0,0 +1,5 @@
+# Policies
+
+Sources:
+* https://github.com/swade1987/deprek8ion/tree/master/policies
+* https://relnotes.k8s.io/?markdown=deprecated

_test/deprek8/1.16-deprek8ion.rego

@@ -0,0 +1,53 @@
+package main
+
+deny[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _deny with input as obj
+}
+
+deny[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _deny
+}
+
+# Based on https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.16.md
+
+# All resources under apps/v1beta1 and apps/v1beta2 - use apps/v1 instead
+_deny = msg {
+  apis := ["apps/v1beta1", "apps/v1beta2"]
+  input.apiVersion == apis[_]
+  msg := sprintf("%s/%s: API %s has been deprecated, use apps/v1 instead.", [input.kind, input.metadata.name, input.apiVersion])
+}
+
+# daemonsets, deployments, replicasets resources under extensions/v1beta1 - use apps/v1 instead
+_deny = msg {
+  resources := ["DaemonSet", "Deployment", "ReplicaSet"]
+  input.apiVersion == "extensions/v1beta1"
+  input.kind == resources[_]
+  msg := sprintf("%s/%s: API extensions/v1beta1 for %s has been deprecated, use apps/v1 instead.", [input.kind, input.metadata.name, input.kind])
+}
+
+# networkpolicies resources under extensions/v1beta1 - use networking.k8s.io/v1 instead
+_deny = msg {
+  input.apiVersion == "extensions/v1beta1"
+  input.kind == "NetworkPolicy"
+  msg := sprintf("%s/%s: API extensions/v1beta1 for NetworkPolicy has been deprecated, use networking.k8s.io/v1 instead.", [input.kind, input.metadata.name])
+}
+
+# podsecuritypolicies resources under extensions/v1beta1 - use policy/v1beta1 instead
+_deny = msg {
+  input.apiVersion == "extensions/v1beta1"
+  input.kind == "PodSecurityPolicy"
+  msg := sprintf("%s/%s: API extensions/v1beta1 for PodSecurityPolicy has been deprecated, use policy/v1beta1 instead.", [input.kind, input.metadata.name])
+}
+
+# PriorityClass resources will no longer be served from scheduling.k8s.io/v1beta1 and scheduling.k8s.io/v1alpha1 in v1.17.
+_deny = msg {
+  apis := ["scheduling.k8s.io/v1beta1", "scheduling.k8s.io/v1alpha1"]
+  input.apiVersion == apis[_]
+  input.kind == "PriorityClass"
+  msg := sprintf("%s/%s: API %s for PriorityClass has been deprecated, use scheduling.k8s.io/v1 instead.", [input.kind, input.metadata.name, input.apiVersion])
+}

_test/deprek8/1.17-deprek8ion.rego

@@ -0,0 +1,24 @@
+package main
+
+deny[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _deny with input as obj
+}
+
+deny[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _deny
+}
+
+# Based on https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.16.md
+
+# PriorityClass resources will no longer be served from scheduling.k8s.io/v1beta1 and scheduling.k8s.io/v1alpha1 in v1.17.
+_deny = msg {
+  apis := ["scheduling.k8s.io/v1beta1", "scheduling.k8s.io/v1alpha1"]
+  input.apiVersion == apis[_]
+  input.kind == "PriorityClass"
+  msg := sprintf("%s/%s: API %s for PriorityClass has been deprecated, use scheduling.k8s.io/v1 instead.", [input.kind, input.metadata.name, input.apiVersion])
+}

_test/deprek8/1.18-deprek8ion.rego

@@ -0,0 +1,24 @@
+package main
+
+deny[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _deny with input as obj
+}
+
+deny[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _deny
+}
+
+# Based on https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md
+
+# Within Ingress resources spec.ingressClassName replaces the deprecated kubernetes.io/ingress.class annotation.
+_deny = msg {
+  resources := ["Ingress"]
+  input.kind == resources[_]
+  input.metadata.annotations["kubernetes.io/ingress.class"]
+  msg := sprintf("%s/%s: Ingress annotation kubernetes.io/ingress.class has been deprecated in 1.18, use spec.IngressClassName instead.", [input.kind, input.metadata.name])
+}

_test/deprek8/1.19-deprek8ion.rego

@@ -0,0 +1,31 @@
+package main
+
+warn[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _warn with input as obj
+}
+
+warn[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _warn
+}
+
+# Based on https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.16.md
+
+# The admissionregistration.k8s.io/v1beta1 versions of MutatingWebhookConfiguration and ValidatingWebhookConfiguration are deprecated in 1.19. Migrate to use admissionregistration.k8s.io/v1 instead
+_warn = msg {
+  kinds := ["MutatingWebhookConfiguration", "ValidatingWebhookConfiguration"]
+  input.apiVersion == "admissionregistration.k8s.io/v1beta1"
+  input.kind == kinds[_]
+  msg := sprintf("%s/%s: API admissionregistration.k8s.io/v1beta1 is deprecated in Kubernetes 1.19, use admissionregistration.k8s.io/v1 instead.", [input.kind, input.metadata.name])
+}
+
+# The apiextensions.k8s.io/v1beta1 version of CustomResourceDefinition is deprecated in 1.19. Migrate to use apiextensions.k8s.io/v1 instead
+_warn = msg {
+  input.apiVersion == "apiextensions.k8s.io/v1beta1"
+  input.kind == "CustomResourceDefinition"
+ msg := sprintf("%s/%s: API apiextensions.k8s.io/v1beta1 for CustomResourceDefinition is deprecated in 1.19, use apiextensions.k8s.io/v1 instead.", [input.kind, input.metadata.name])
+}

_test/deprek8/1.20-deprek8ion.rego

@@ -0,0 +1,37 @@
+package main
+
+warn[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _warn with input as obj
+}
+
+warn[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _warn
+}
+
+# Based on https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.16.md
+
+# Ingress resources will no longer be served from extensions/v1beta1 in v1.20. Migrate use to the networking.k8s.io/v1beta1 API, available since v1.14.
+_warn = msg {
+  input.apiVersion == "extensions/v1beta1"
+  input.kind == "Ingress"
+  msg := sprintf("%s/%s: API extensions/v1beta1 for Ingress is deprecated from Kubernetes 1.20, use networking.k8s.io/v1beta1 instead.", [input.kind, input.metadata.name])
+}
+
+# All resources will no longer be served from rbac.authorization.k8s.io/v1alpha1 and rbac.authorization.k8s.io/v1beta1 in 1.20. Migrate to use rbac.authorization.k8s.io/v1 instead
+_warn = msg {
+  apis := ["rbac.authorization.k8s.io/v1alpha1", "rbac.authorization.k8s.io/v1beta1"]
+  input.apiVersion == apis[_]
+  msg := sprintf("%s/%s: API %s is deprecated from Kubernetes 1.20, use rbac.authorization.k8s.io/v1 instead.", [input.kind, input.metadata.name, input.apiVersion])
+}
+
+# Ingress resources will no longer be served from extensions/v1beta1 in v1.20. Migrate use to the networking.k8s.io/v1beta1 API, available since v1.14.
+_warn = msg {
+  input.apiVersion == "extensions/v1beta1"
+  input.kind == "Ingress"
+  msg := sprintf("%s/%s: API extensions/v1beta1 for Ingress is deprecated from Kubernetes 1.20, use networking.k8s.io/v1beta1 instead.", [input.kind, input.metadata.name])
+}

_test/deprek8/cert-manager-deprek8ion.rego

@@ -0,0 +1,43 @@
+package main
+
+deny[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _deny with input as obj
+}
+
+deny[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _deny
+}
+
+warn[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _warn with input as obj
+}
+
+warn[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _warn
+}
+
+# Based on https://github.com/jetstack/cert-manager/releases/tag/v0.11.0
+
+_deny = msg {
+  kinds := ["Certificate", "Issuer", "ClusterIssuer", "CertificateRequest"]
+  input.apiVersion == "certmanager.k8s.io/v1alpha1"
+  input.kind == kinds[_]
+  msg := sprintf("%s/%s: API certmanager.k8s.io/v1alpha1 for %s is obsolete, use cert-manager.io/v1alpha2 instead.", [input.kind, input.metadata.name, input.kind])
+}
+
+_deny = msg {
+  kinds := ["Order", "Challenge"]
+  input.apiVersion == "certmanager.k8s.io/v1alpha1"
+  input.kind == kinds[_]
+  msg := sprintf("%s/%s: API certmanager.k8s.io/v1alpha1 for %s is obsolete, use acme.cert-manager.io/v1alpha2 instead.", [input.kind, input.metadata.name, input.kind])
+}

_test/deprek8/service-account-deprek8ion.rego

@@ -0,0 +1,39 @@
+package main
+
+warn[msg] {
+  input.apiVersion == "v1"
+  input.kind == "List"
+  obj := input.items[_]
+  msg := _warn with input as obj
+}
+
+warn[msg] {
+  input.apiVersion != "v1"
+  input.kind != "List"
+  msg := _warn
+}
+
+# Based on https://github.com/kubernetes/kubernetes/issues/47198
+# Warn about the deprecated serviceAccount field in podSpec.
+
+_warn = msg {
+  resources := ["Pod"]
+  input.kind == resources[_]
+  input.spec.serviceAccount
+  msg := sprintf("%s/%s: The serviceAccount field in the podSpec will be deprecated soon, use serviceAccountName instead.", [input.kind, input.metadata.name])
+}
+
+_warn = msg {
+  resources := ["CronJob"]
+  input.kind == resources[_]
+  input.spec.jobTemplate.spec.template.spec.serviceAccount
+  msg := sprintf("%s/%s: The serviceAccount field in the podSpec will be deprecated soon, use serviceAccountName instead.", [input.kind, input.metadata.name])
+}
+
+_warn = msg {
+  resources := ["Deployment", "DaemonSet", "Job", "ReplicaSet", "ReplicationController", "StatefulSet"]
+  input.kind == resources[_]
+  input.spec.template.spec.serviceAccount
+  msg := sprintf("%s/%s: The serviceAccount field in the podSpec will be deprecated soon, use serviceAccountName instead.", [input.kind, input.metadata.name])
+}
+

_test/policies/deployment.rego

@@ -0,0 +1,13 @@
+package main
+
+deny[msg] {
+  input.kind = "Deployment"
+  not input.spec.template.spec.securityContext.runAsNonRoot = true
+  msg = "Containers must not run as root"
+}
+
+deny[msg] {
+  input.kind = "Deployment"
+  not input.spec.selector.matchLabels.app
+  msg = "Containers must provide app label for pod selectors"
+}