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Chart: Tighten securityContexts and Pod Security Policies. (#10491)

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* Values: Fix docs of `controller.podSecurityContext` & `controller.sysctls`.

* Values: Add missing `controller.containerSecurityContext`.

Already in use, but has never been added to values.

* Values: Fix docs of `defaultBackend.podSecurityContext` & `defaultBackend.containerSecurityContext`.

* Helpers: Rename `controller.containerSecurityContext` to `ingress-nginx.controller.containerSecurityContext`.

Due to alignment with other templates.

* Helpers: Improve `extraModules`.

- Make `command` a multiline list.
- Fix `toYaml` usage.
- Remove `toYaml` where not necessary.

* Helpers: Move `ingress-nginx.defaultBackend.fullname`.

* Helpers: Add `ingress-nginx.defaultBackend.containerSecurityContext`.

Extracts the default backend `securityContext` into a template, as for the controller.

* Controller: Fix indentation of `controller.podSecurityContext` & `controller.sysctls`.

* Controller: Improve `controller.extraModules` & `controller.opentelemetry`.

- Add `controller.extraModules.distroless` & `controller.extraModules.resources`.
- Add `controller.opentelemetry.name` & `controller.opentelemetry.distroless`.
- Align `extraModules` inclusion for `controller.extraModules` & `controller.opentelemetry`.
- Remove redundant whitespaces.

* Controller/PSP: Align indentation.

* Controller/PSP: Remove quotes.

* Controller/PSP: Improve comments.

* Controller/PSP: Reorder fields.

See https://v1-24.docs.kubernetes.io/docs/concepts/security/pod-security-policy.

* Admission Webhooks: Fix indentation of `controller.admissionWebhooks.patch.securityContext`.

* Admission Webhooks/PSP: Align indentation.

* Admission Webhooks/PSP: Reorder fields.

* Admission Webhooks/PSP: Align condition.

* Admission Webhooks/ClusterRole: Align PSP rule.

* Default Backend/PSP: Align indentation.

* Default Backend/PSP: Reorder fields.

See https://v1-24.docs.kubernetes.io/docs/concepts/security/pod-security-policy.

* Values: Tighten `controller.image`.

Due to recent changes, the controller image can be run without privilege escalation:

- https://github.com/kubernetes/ingress-nginx/issues/8499
- https://github.com/kubernetes/ingress-nginx/pull/7449

* Values: Tighten `controller.extraModules.containerSecurityContext`.

* Values: Tighten `controller.opentelemetry.containerSecurityContext`.

* Values: Tighten `controller.admissionWebhooks.*.securityContext`.

Moves the pod `securityContext` to the containers to not interfere with injected containers.

* Values: Tighten `defaultBackend.image`.
This commit is contained in:
Marco Ebert 2023-11-07 18:52:36 +01:00 committed by GitHub
parent 6499a6bd04
commit 8b026f42d5
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 316 additions and 216 deletions
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30
charts/ingress-nginx/README.md
View file

@ -242,7 +242,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| controller.admissionWebhooks.certificate | string | `"/usr/local/certificates/cert"` | |
| controller.admissionWebhooks.createSecretJob.name | string | `"create"` | |
| controller.admissionWebhooks.createSecretJob.resources | object | `{}` | |
| controller.admissionWebhooks.createSecretJob.securityContext.allowPrivilegeEscalation | bool | `false` | |
| controller.admissionWebhooks.createSecretJob.securityContext | object | `{"allowPrivilegeEscalation":false,"capabilities":{"drop":["ALL"]},"readOnlyRootFilesystem":true,"runAsNonRoot":true,"runAsUser":65532,"seccompProfile":{"type":"RuntimeDefault"}}` | Security context for secret creation containers |
| controller.admissionWebhooks.enabled | bool | `true` | |
| controller.admissionWebhooks.existingPsp | string | `""` | Use an existing PSP instead of creating one |
| controller.admissionWebhooks.extraEnvs | list | `[]` | Additional environment variables to set |
@ -262,13 +262,11 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| controller.admissionWebhooks.patch.nodeSelector."kubernetes.io/os" | string | `"linux"` | |
| controller.admissionWebhooks.patch.podAnnotations | object | `{}` | |
| controller.admissionWebhooks.patch.priorityClassName | string | `""` | Provide a priority class name to the webhook patching job # |
| controller.admissionWebhooks.patch.securityContext.fsGroup | int | `2000` | |
| controller.admissionWebhooks.patch.securityContext.runAsNonRoot | bool | `true` | |
| controller.admissionWebhooks.patch.securityContext.runAsUser | int | `2000` | |
| controller.admissionWebhooks.patch.securityContext | object | `{}` | Security context for secret creation & webhook patch pods |
| controller.admissionWebhooks.patch.tolerations | list | `[]` | |
| controller.admissionWebhooks.patchWebhookJob.name | string | `"patch"` | |
| controller.admissionWebhooks.patchWebhookJob.resources | object | `{}` | |
| controller.admissionWebhooks.patchWebhookJob.securityContext.allowPrivilegeEscalation | bool | `false` | |
| controller.admissionWebhooks.patchWebhookJob.securityContext | object | `{"allowPrivilegeEscalation":false,"capabilities":{"drop":["ALL"]},"readOnlyRootFilesystem":true,"runAsNonRoot":true,"runAsUser":65532,"seccompProfile":{"type":"RuntimeDefault"}}` | Security context for webhook patch containers |
| controller.admissionWebhooks.port | int | `8443` | |
| controller.admissionWebhooks.service.annotations | object | `{}` | |
| controller.admissionWebhooks.service.externalIPs | list | `[]` | |
@ -291,6 +289,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| controller.configMapNamespace | string | `""` | Allows customization of the configmap / nginx-configmap namespace; defaults to $(POD_NAMESPACE) |
| controller.containerName | string | `"controller"` | Configures the controller container name |
| controller.containerPort | object | `{"http":80,"https":443}` | Configures the ports that the nginx-controller listens on |
| controller.containerSecurityContext | object | `{}` | Security context for controller containers |
| controller.customTemplate.configMapKey | string | `""` | |
| controller.customTemplate.configMapName | string | `""` | |
| controller.dnsConfig | object | `{}` | Optionally customize the pod dnsConfig. |
@ -315,14 +314,17 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| controller.hostPort.ports.http | int | `80` | 'hostPort' http port |
| controller.hostPort.ports.https | int | `443` | 'hostPort' https port |
| controller.hostname | object | `{}` | Optionally customize the pod hostname. |
| controller.image.allowPrivilegeEscalation | bool | `true` | |
| controller.image.allowPrivilegeEscalation | bool | `false` | |
| controller.image.chroot | bool | `false` | |
| controller.image.digest | string | `"sha256:5b161f051d017e55d358435f295f5e9a297e66158f136321d9b04520ec6c48a3"` | |
| controller.image.digestChroot | string | `"sha256:5976b1067cfbca8a21d0ba53d71f83543a73316a61ea7f7e436d6cf84ddf9b26"` | |
| controller.image.image | string | `"ingress-nginx/controller"` | |
| controller.image.pullPolicy | string | `"IfNotPresent"` | |
| controller.image.readOnlyRootFilesystem | bool | `false` | |
| controller.image.registry | string | `"registry.k8s.io"` | |
| controller.image.runAsNonRoot | bool | `true` | |
| controller.image.runAsUser | int | `101` | |
| controller.image.seccompProfile.type | string | `"RuntimeDefault"` | |
| controller.image.tag | string | `"v1.9.4"` | |
| controller.ingressClass | string | `"nginx"` | For backwards compatibility with ingress.class annotation, use ingressClass. Algorithm is as follows, first ingressClassName is considered, if not present, controller looks for ingress.class annotation |
| controller.ingressClassByName | bool | `false` | Process IngressClass per name (additionally as per spec.controller). |
@ -379,12 +381,19 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| controller.networkPolicy.enabled | bool | `false` | Enable 'networkPolicy' or not |
| controller.nodeSelector | object | `{"kubernetes.io/os":"linux"}` | Node labels for controller pod assignment # Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/ # |
| controller.opentelemetry.containerSecurityContext.allowPrivilegeEscalation | bool | `false` | |
| controller.opentelemetry.containerSecurityContext.capabilities.drop[0] | string | `"ALL"` | |
| controller.opentelemetry.containerSecurityContext.readOnlyRootFilesystem | bool | `true` | |
| controller.opentelemetry.containerSecurityContext.runAsNonRoot | bool | `true` | |
| controller.opentelemetry.containerSecurityContext.runAsUser | int | `65532` | The image's default user, inherited from its base image `cgr.dev/chainguard/static`. |
| controller.opentelemetry.containerSecurityContext.seccompProfile.type | string | `"RuntimeDefault"` | |
| controller.opentelemetry.distroless | bool | `true` | |
| controller.opentelemetry.enabled | bool | `false` | |
| controller.opentelemetry.image | string | `"registry.k8s.io/ingress-nginx/opentelemetry:v20230721-3e2062ee5@sha256:13bee3f5223883d3ca62fee7309ad02d22ec00ff0d7033e3e9aca7a9f60fd472"` | |
| controller.opentelemetry.name | string | `"opentelemetry"` | |
| controller.opentelemetry.resources | object | `{}` | |
| controller.podAnnotations | object | `{}` | Annotations to be added to controller pods # |
| controller.podLabels | object | `{}` | Labels to add to the pod container metadata |
| controller.podSecurityContext | object | `{}` | Security Context policies for controller pods |
| controller.podSecurityContext | object | `{}` | Security context for controller pods |
| controller.priorityClassName | string | `""` | |
| controller.proxySetHeaders | object | `{}` | Will add custom headers before sending traffic to backends according to https://github.com/kubernetes/ingress-nginx/tree/main/docs/examples/customization/custom-headers |
| controller.publishService | object | `{"enabled":true,"pathOverride":""}` | Allows customization of the source of the IP address or FQDN to report in the ingress status field. By default, it reads the information provided by the service. If disable, the status field reports the IP address of the node or nodes where an ingress controller pod is running. |
@ -434,7 +443,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| controller.service.targetPorts.https | string | `"https"` | |
| controller.service.type | string | `"LoadBalancer"` | |
| controller.shareProcessNamespace | bool | `false` | |
| controller.sysctls | object | `{}` | See https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ for notes on enabling and using sysctls |
| controller.sysctls | object | `{}` | sysctls for controller pods # Ref: https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ |
| controller.tcp.annotations | object | `{}` | Annotations to be added to the tcp config configmap |
| controller.tcp.configMapNamespace | string | `""` | Allows customization of the tcp-services-configmap; defaults to $(POD_NAMESPACE) |
| controller.terminationGracePeriodSeconds | int | `300` | `terminationGracePeriodSeconds` to avoid killing pods before we are ready # wait up to five minutes for the drain of connections # |
@ -451,7 +460,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| defaultBackend.autoscaling.minReplicas | int | `1` | |
| defaultBackend.autoscaling.targetCPUUtilizationPercentage | int | `50` | |
| defaultBackend.autoscaling.targetMemoryUtilizationPercentage | int | `50` | |
| defaultBackend.containerSecurityContext | object | `{}` | Security Context policies for controller main container. See https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ for notes on enabling and using sysctls # |
| defaultBackend.containerSecurityContext | object | `{}` | Security context for default backend containers |
| defaultBackend.enabled | bool | `false` | |
| defaultBackend.existingPsp | string | `""` | Use an existing PSP instead of creating one |
| defaultBackend.extraArgs | object | `{}` | |
@ -465,6 +474,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| defaultBackend.image.registry | string | `"registry.k8s.io"` | |
| defaultBackend.image.runAsNonRoot | bool | `true` | |
| defaultBackend.image.runAsUser | int | `65534` | |
| defaultBackend.image.seccompProfile.type | string | `"RuntimeDefault"` | |
| defaultBackend.image.tag | string | `"1.5"` | |
| defaultBackend.labels | object | `{}` | Labels to be added to the default backend resources |
| defaultBackend.livenessProbe.failureThreshold | int | `3` | |
@ -479,7 +489,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
| defaultBackend.nodeSelector | object | `{"kubernetes.io/os":"linux"}` | Node labels for default backend pod assignment # Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/ # |
| defaultBackend.podAnnotations | object | `{}` | Annotations to be added to default backend pods # |
| defaultBackend.podLabels | object | `{}` | Labels to add to the pod container metadata |
| defaultBackend.podSecurityContext | object | `{}` | Security Context policies for controller pods See https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ for notes on enabling and using sysctls # |
| defaultBackend.podSecurityContext | object | `{}` | Security context for default backend pods |
| defaultBackend.port | int | `8080` | |
| defaultBackend.priorityClassName | string | `""` | |
| defaultBackend.readinessProbe.failureThreshold | int | `6` | |

71
charts/ingress-nginx/templates/_helpers.tpl
View file

@ -39,23 +39,31 @@ Allows overriding it for multi-namespace deployments in combined charts.
{{- end -}}
{{/*
Container SecurityContext.
Controller container security context.
*/}}
{{- define "controller.containerSecurityContext" -}}
{{- define "ingress-nginx.controller.containerSecurityContext" -}}
{{- if .Values.controller.containerSecurityContext -}}
{{- toYaml .Values.controller.containerSecurityContext -}}
{{- else -}}
runAsNonRoot: {{ .Values.controller.image.runAsNonRoot }}
runAsUser: {{ .Values.controller.image.runAsUser }}
allowPrivilegeEscalation: {{ or .Values.controller.image.allowPrivilegeEscalation .Values.controller.image.chroot }}
{{- if .Values.controller.image.seccompProfile }}
seccompProfile: {{ toYaml .Values.controller.image.seccompProfile | nindent 2 }}
{{- end }}
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
{{- if .Values.controller.image.chroot }}
{{- if .Values.controller.image.seccompProfile }}
- SYS_ADMIN
{{- end }}
- SYS_CHROOT
{{- end }}
runAsUser: {{ .Values.controller.image.runAsUser }}
allowPrivilegeEscalation: {{ .Values.controller.image.allowPrivilegeEscalation }}
{{- end }}
readOnlyRootFilesystem: {{ .Values.controller.image.readOnlyRootFilesystem }}
{{- end -}}
{{- end -}}
{{/*
@ -116,14 +124,6 @@ Users can provide an override for an explicit service they want bound via `.Valu
{{- print $servicePath | trimSuffix "-" -}}
{{- end -}}
{{/*
Create a default fully qualified default backend name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
*/}}
{{- define "ingress-nginx.defaultBackend.fullname" -}}
{{- printf "%s-%s" (include "ingress-nginx.fullname" .) .Values.defaultBackend.name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Common labels
*/}}
@ -183,6 +183,14 @@ We truncate at 63 chars because some Kubernetes name fields are limited to this
{{- printf "%s-%s" (include "ingress-nginx.admissionWebhooks.fullname" .) .Values.controller.admissionWebhooks.patchWebhookJob.name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Create a default fully qualified default backend name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
*/}}
{{- define "ingress-nginx.defaultBackend.fullname" -}}
{{- printf "%s-%s" (include "ingress-nginx.fullname" .) .Values.defaultBackend.name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Create the name of the backend service account to use - only used when podsecuritypolicy is also enabled
*/}}
@ -194,6 +202,26 @@ Create the name of the backend service account to use - only used when podsecuri
{{- end -}}
{{- end -}}
{{/*
Default backend container security context.
*/}}
{{- define "ingress-nginx.defaultBackend.containerSecurityContext" -}}
{{- if .Values.defaultBackend.containerSecurityContext -}}
{{- toYaml .Values.defaultBackend.containerSecurityContext -}}
{{- else -}}
runAsNonRoot: {{ .Values.defaultBackend.image.runAsNonRoot }}
runAsUser: {{ .Values.defaultBackend.image.runAsUser }}
allowPrivilegeEscalation: {{ .Values.defaultBackend.image.allowPrivilegeEscalation }}
{{- if .Values.defaultBackend.image.seccompProfile }}
seccompProfile: {{ toYaml .Values.defaultBackend.image.seccompProfile | nindent 2 }}
{{- end }}
capabilities:
drop:
- ALL
readOnlyRootFilesystem: {{ .Values.defaultBackend.image.readOnlyRootFilesystem }}
{{- end -}}
{{- end -}}
{{/*
Return the appropriate apiGroup for PodSecurityPolicy.
*/}}
@ -230,18 +258,21 @@ Extra modules.
{{- define "extraModules" -}}
- name: {{ .name }}
image: {{ .image }}
{{- if .distroless | default false }}
command: ['/init_module']
command:
{{- if .distroless }}
- /init_module
{{- else }}
command: ['sh', '-c', '/usr/local/bin/init_module.sh']
- sh
- -c
- /usr/local/bin/init_module.sh
{{- end }}
{{- if .containerSecurityContext }}
securityContext: {{ .containerSecurityContext | toYaml | nindent 4 }}
securityContext: {{ toYaml .containerSecurityContext | nindent 4 }}
{{- end }}
{{- if .resources }}
resources: {{ .resources | toYaml | nindent 4 }}
resources: {{ toYaml .resources | nindent 4 }}
{{- end }}
volumeMounts:
- name: {{ toYaml "modules"}}
mountPath: {{ toYaml "/modules_mount"}}
- name: modules
mountPath: /modules_mount
{{- end -}}

7
charts/ingress-nginx/templates/admission-webhooks/job-patch/clusterrole.yaml
View file

@ -21,14 +21,13 @@ rules:
- get
- update
{{- if .Values.podSecurityPolicy.enabled }}
- apiGroups: ['extensions']
- apiGroups: [{{ template "podSecurityPolicy.apiGroup" . }}]
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
{{- with .Values.controller.admissionWebhooks.existingPsp }}
- {{ . }}
resourceNames: [{{ . }}]
{{- else }}
- {{ include "ingress-nginx.admissionWebhooks.fullname" . }}
resourceNames: [{{ include "ingress-nginx.admissionWebhooks.fullname" . }}]
{{- end }}
{{- end }}
{{- end }}

3
charts/ingress-nginx/templates/admission-webhooks/job-patch/job-createSecret.yaml
View file

@ -74,7 +74,6 @@ spec:
tolerations: {{ toYaml .Values.controller.admissionWebhooks.patch.tolerations | nindent 8 }}
{{- end }}
{{- if .Values.controller.admissionWebhooks.patch.securityContext }}
securityContext:
{{- toYaml .Values.controller.admissionWebhooks.patch.securityContext | nindent 8 }}
securityContext: {{ toYaml .Values.controller.admissionWebhooks.patch.securityContext | nindent 8 }}
{{- end }}
{{- end }}

3
charts/ingress-nginx/templates/admission-webhooks/job-patch/job-patchWebhook.yaml
View file

@ -76,7 +76,6 @@ spec:
tolerations: {{ toYaml .Values.controller.admissionWebhooks.patch.tolerations | nindent 8 }}
{{- end }}
{{- if .Values.controller.admissionWebhooks.patch.securityContext }}
securityContext:
{{- toYaml .Values.controller.admissionWebhooks.patch.securityContext | nindent 8 }}
securityContext: {{ toYaml .Values.controller.admissionWebhooks.patch.securityContext | nindent 8 }}
{{- end }}
{{- end }}

53
charts/ingress-nginx/templates/admission-webhooks/job-patch/psp.yaml
View file

@ -1,5 +1,5 @@
{{- if (semverCompare "<1.25.0-0" .Capabilities.KubeVersion.Version) }}
{{- if and .Values.controller.admissionWebhooks.enabled .Values.controller.admissionWebhooks.patch.enabled .Values.podSecurityPolicy.enabled (empty .Values.controller.admissionWebhooks.existingPsp) -}}
{{- if and .Values.podSecurityPolicy.enabled .Values.controller.admissionWebhooks.enabled .Values.controller.admissionWebhooks.patch.enabled (empty .Values.controller.admissionWebhooks.existingPsp) -}}
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
@ -7,6 +7,7 @@ metadata:
annotations:
"helm.sh/hook": pre-install,pre-upgrade,post-install,post-upgrade
"helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
seccomp.security.alpha.kubernetes.io/allowedProfileNames: "*"
labels:
{{- include "ingress-nginx.labels" . | nindent 4 }}
app.kubernetes.io/component: admission-webhook
@ -14,28 +15,38 @@ metadata:
{{- toYaml . | nindent 4 }}
{{- end }}
spec:
allowPrivilegeEscalation: false
fsGroup:
ranges:
- max: 65535
min: 1
rule: MustRunAs
requiredDropCapabilities:
- ALL
runAsUser:
rule: MustRunAsNonRoot
seLinux:
rule: RunAsAny
supplementalGroups:
ranges:
- max: 65535
min: 1
rule: MustRunAs
privileged: false
hostPID: false
hostIPC: false
hostNetwork: false
volumes:
- configMap
- emptyDir
- projected
- secret
- downwardAPI
- emptyDir
- secret
- projected
fsGroup:
rule: MustRunAs
ranges:
- min: 1
max: 65535
readOnlyRootFilesystem: true
runAsUser:
rule: MustRunAsNonRoot
runAsGroup:
rule: MustRunAs
ranges:
- min: 1
max: 65535
supplementalGroups:
rule: MustRunAs
ranges:
- min: 1
max: 65535
allowPrivilegeEscalation: false
requiredDropCapabilities:
- ALL
seLinux:
rule: RunAsAny
{{- end }}
{{- end }}

26
charts/ingress-nginx/templates/controller-daemonset.yaml
View file

@ -60,7 +60,6 @@ spec:
{{- end }}
{{- if or .Values.controller.podSecurityContext .Values.controller.sysctls }}
securityContext:
{{- end }}
{{- if .Values.controller.podSecurityContext }}
{{- toYaml .Values.controller.podSecurityContext | nindent 8 }}
{{- end }}
@ -71,6 +70,7 @@ spec:
value: {{ $value | quote }}
{{- end }}
{{- end }}
{{- end }}
{{- if .Values.controller.shareProcessNamespace }}
shareProcessNamespace: {{ .Values.controller.shareProcessNamespace }}
{{- end }}
@ -83,9 +83,8 @@ spec:
{{- if .Values.controller.lifecycle }}
lifecycle: {{ toYaml .Values.controller.lifecycle | nindent 12 }}
{{- end }}
args:
{{- include "ingress-nginx.params" . | nindent 12 }}
securityContext: {{ include "controller.containerSecurityContext" . | nindent 12 }}
args: {{ include "ingress-nginx.params" . | nindent 12 }}
securityContext: {{ include "ingress-nginx.controller.containerSecurityContext" . | nindent 12 }}
env:
- name: POD_NAME
valueFrom:
@ -150,11 +149,11 @@ spec:
volumeMounts:
{{- if (or .Values.controller.extraModules .Values.controller.opentelemetry.enabled) }}
- name: modules
{{ if .Values.controller.image.chroot }}
{{- if .Values.controller.image.chroot }}
mountPath: /chroot/modules_mount
{{ else }}
{{- else }}
mountPath: /modules_mount
{{ end }}
{{- end }}
{{- end }}
{{- if .Values.controller.customTemplate.configMapName }}
- mountPath: /etc/nginx/template
@ -174,23 +173,24 @@ spec:
resources: {{ toYaml .Values.controller.resources | nindent 12 }}
{{- end }}
{{- if .Values.controller.extraContainers }}
{{ toYaml .Values.controller.extraContainers | nindent 8 }}
{{- toYaml .Values.controller.extraContainers | nindent 8 }}
{{- end }}
{{- if (or .Values.controller.extraInitContainers .Values.controller.extraModules .Values.controller.opentelemetry.enabled) }}
initContainers:
{{- if .Values.controller.extraInitContainers }}
{{ toYaml .Values.controller.extraInitContainers | nindent 8 }}
{{- toYaml .Values.controller.extraInitContainers | nindent 8 }}
{{- end }}
{{- if .Values.controller.extraModules }}
{{- range .Values.controller.extraModules }}
{{- $containerSecurityContext := .containerSecurityContext | default $.Values.controller.containerSecurityContext }}
{{- include "extraModules" (dict "name" .name "image" .image "containerSecurityContext" $containerSecurityContext) | nindent 8 }}
{{- include "extraModules" (dict "name" .name "image" .image "distroless" .distroless "containerSecurityContext" $containerSecurityContext "resources" .resources) | nindent 8 }}
{{- end }}
{{- end }}
{{- if .Values.controller.opentelemetry.enabled }}
{{- $otelContainerSecurityContext := $.Values.controller.opentelemetry.containerSecurityContext | default $.Values.controller.containerSecurityContext }}
{{ $otelResources := $.Values.controller.opentelemetry.resources | default dict }}
{{- include "extraModules" (dict "name" "opentelemetry" "image" .Values.controller.opentelemetry.image "containerSecurityContext" $otelContainerSecurityContext "distroless" true "resources" $otelResources) | nindent 8}}
{{- with .Values.controller.opentelemetry }}
{{- $containerSecurityContext := .containerSecurityContext | default $.Values.controller.containerSecurityContext }}
{{- include "extraModules" (dict "name" .name "image" .image "distroless" .distroless "containerSecurityContext" $containerSecurityContext "resources" .resources) | nindent 8 }}
{{- end }}
{{- end }}
{{- end }}
{{- if .Values.controller.hostNetwork }}

26
charts/ingress-nginx/templates/controller-deployment.yaml
View file

@ -63,7 +63,6 @@ spec:
{{- end }}
{{- if or .Values.controller.podSecurityContext .Values.controller.sysctls }}
securityContext:
{{- end }}
{{- if .Values.controller.podSecurityContext }}
{{- toYaml .Values.controller.podSecurityContext | nindent 8 }}
{{- end }}
@ -74,6 +73,7 @@ spec:
value: {{ $value | quote }}
{{- end }}
{{- end }}
{{- end }}
{{- if .Values.controller.shareProcessNamespace }}
shareProcessNamespace: {{ .Values.controller.shareProcessNamespace }}
{{- end }}
@ -86,9 +86,8 @@ spec:
{{- if .Values.controller.lifecycle }}
lifecycle: {{ toYaml .Values.controller.lifecycle | nindent 12 }}
{{- end }}
args:
{{- include "ingress-nginx.params" . | nindent 12 }}
securityContext: {{ include "controller.containerSecurityContext" . | nindent 12 }}
args: {{ include "ingress-nginx.params" . | nindent 12 }}
securityContext: {{ include "ingress-nginx.controller.containerSecurityContext" . | nindent 12 }}
env:
- name: POD_NAME
valueFrom:
@ -153,11 +152,11 @@ spec:
volumeMounts:
{{- if (or .Values.controller.extraModules .Values.controller.opentelemetry.enabled) }}
- name: modules
{{ if .Values.controller.image.chroot }}
{{- if .Values.controller.image.chroot }}
mountPath: /chroot/modules_mount
{{ else }}
{{- else }}
mountPath: /modules_mount
{{ end }}
{{- end }}
{{- end }}
{{- if .Values.controller.customTemplate.configMapName }}
- mountPath: /etc/nginx/template
@ -177,23 +176,24 @@ spec:
resources: {{ toYaml .Values.controller.resources | nindent 12 }}
{{- end }}
{{- if .Values.controller.extraContainers }}
{{ toYaml .Values.controller.extraContainers | nindent 8 }}
{{- toYaml .Values.controller.extraContainers | nindent 8 }}
{{- end }}
{{- if (or .Values.controller.extraInitContainers .Values.controller.extraModules .Values.controller.opentelemetry.enabled) }}
initContainers:
{{- if .Values.controller.extraInitContainers }}
{{ toYaml .Values.controller.extraInitContainers | nindent 8 }}
{{- toYaml .Values.controller.extraInitContainers | nindent 8 }}
{{- end }}
{{- if .Values.controller.extraModules }}
{{- range .Values.controller.extraModules }}
{{- $containerSecurityContext := .containerSecurityContext | default $.Values.controller.containerSecurityContext }}
{{- include "extraModules" (dict "name" .name "image" .image "containerSecurityContext" $containerSecurityContext) | nindent 8 }}
{{- include "extraModules" (dict "name" .name "image" .image "distroless" .distroless "containerSecurityContext" $containerSecurityContext "resources" .resources) | nindent 8 }}
{{- end }}
{{- end }}
{{- if .Values.controller.opentelemetry.enabled }}
{{- $otelContainerSecurityContext := $.Values.controller.opentelemetry.containerSecurityContext | default $.Values.controller.containerSecurityContext }}
{{ $otelResources := $.Values.controller.opentelemetry.resources | default dict }}
{{- include "extraModules" (dict "name" "opentelemetry" "image" .Values.controller.opentelemetry.image "containerSecurityContext" $otelContainerSecurityContext "distroless" true "resources" $otelResources) | nindent 8}}
{{- with .Values.controller.opentelemetry }}
{{- $containerSecurityContext := .containerSecurityContext | default $.Values.controller.containerSecurityContext }}
{{- include "extraModules" (dict "name" .name "image" .image "distroless" .distroless "containerSecurityContext" $containerSecurityContext "resources" .resources) | nindent 8 }}
{{- end }}
{{- end }}
{{- end }}
{{- if .Values.controller.hostNetwork }}

142
charts/ingress-nginx/templates/controller-psp.yaml
View file

@ -4,6 +4,8 @@ apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: {{ include "ingress-nginx.fullname" . }}
annotations:
seccomp.security.alpha.kubernetes.io/allowedProfileNames: "*"
labels:
{{- include "ingress-nginx.labels" . | nindent 4 }}
app.kubernetes.io/component: controller
@ -11,84 +13,88 @@ metadata:
{{- toYaml . | nindent 4 }}
{{- end }}
spec:
privileged: false
hostPID: false
hostIPC: false
hostNetwork: {{ .Values.controller.hostNetwork }}
{{- if or .Values.controller.hostNetwork .Values.controller.hostPort.enabled }}
hostPorts:
{{- if .Values.controller.hostNetwork }}
{{- range $key, $value := .Values.controller.containerPort }}
# controller.containerPort.{{ $key }}
- min: {{ $value }}
max: {{ $value }}
{{- end }}
{{- else if .Values.controller.hostPort.enabled }}
{{- range $key, $value := .Values.controller.hostPort.ports }}
# controller.hostPort.ports.{{ $key }}
- min: {{ $value }}
max: {{ $value }}
{{- end }}
{{- end }}
{{- if .Values.controller.metrics.enabled }}
# controller.metrics.port
- min: {{ .Values.controller.metrics.port }}
max: {{ .Values.controller.metrics.port }}
{{- end }}
{{- if .Values.controller.admissionWebhooks.enabled }}
# controller.admissionWebhooks.port
- min: {{ .Values.controller.admissionWebhooks.port }}
max: {{ .Values.controller.admissionWebhooks.port }}
{{- end }}
{{- range $key, $value := .Values.tcp }}
# tcp.{{ $key }}
- min: {{ $key }}
max: {{ $key }}
{{- end }}
{{- range $key, $value := .Values.udp }}
# udp.{{ $key }}
- min: {{ $key }}
max: {{ $key }}
{{- end }}
{{- end }}
volumes:
- configMap
- downwardAPI
- emptyDir
- secret
- projected
fsGroup:
rule: MustRunAs
ranges:
- min: 1
max: 65535
readOnlyRootFilesystem: false
runAsUser:
rule: MustRunAsNonRoot
runAsGroup:
rule: MustRunAs
ranges:
- min: 1
max: 65535
supplementalGroups:
rule: MustRunAs
ranges:
- min: 1
max: 65535
allowPrivilegeEscalation: {{ or .Values.controller.image.allowPrivilegeEscalation .Values.controller.image.chroot }}
requiredDropCapabilities:
- ALL
allowedCapabilities:
- NET_BIND_SERVICE
{{- if .Values.controller.image.chroot }}
{{- if .Values.controller.image.seccompProfile }}
- SYS_ADMIN
{{- end }}
- SYS_CHROOT
{{- end }}
seLinux:
rule: RunAsAny
{{- if .Values.controller.sysctls }}
allowedUnsafeSysctls:
{{- range $sysctl, $value := .Values.controller.sysctls }}
- {{ $sysctl }}
{{- end }}
{{- end }}
privileged: false
allowPrivilegeEscalation: true
# Allow core volume types.
volumes:
- 'configMap'
- 'emptyDir'
- 'projected'
- 'secret'
- 'downwardAPI'
{{- if .Values.controller.hostNetwork }}
hostNetwork: {{ .Values.controller.hostNetwork }}
{{- end }}
{{- if or .Values.controller.hostNetwork .Values.controller.hostPort.enabled }}
hostPorts:
{{- if .Values.controller.hostNetwork }}
{{- range $key, $value := .Values.controller.containerPort }}
# {{ $key }}
- min: {{ $value }}
max: {{ $value }}
{{- end }}
{{- else if .Values.controller.hostPort.enabled }}
{{- range $key, $value := .Values.controller.hostPort.ports }}
# {{ $key }}
- min: {{ $value }}
max: {{ $value }}
{{- end }}
{{- end }}
{{- if .Values.controller.metrics.enabled }}
# metrics
- min: {{ .Values.controller.metrics.port }}
max: {{ .Values.controller.metrics.port }}
{{- end }}
{{- if .Values.controller.admissionWebhooks.enabled }}
# admission webhooks
- min: {{ .Values.controller.admissionWebhooks.port }}
max: {{ .Values.controller.admissionWebhooks.port }}
{{- end }}
{{- range $key, $value := .Values.tcp }}
# {{ $key }}-tcp
- min: {{ $key }}
max: {{ $key }}
{{- end }}
{{- range $key, $value := .Values.udp }}
# {{ $key }}-udp
- min: {{ $key }}
max: {{ $key }}
{{- end }}
{{- end }}
hostIPC: false
hostPID: false
runAsUser:
# Require the container to run without root privileges.
rule: 'MustRunAsNonRoot'
supplementalGroups:
rule: 'MustRunAs'
ranges:
# Forbid adding the root group.
- min: 1
max: 65535
fsGroup:
rule: 'MustRunAs'
ranges:
# Forbid adding the root group.
- min: 1
max: 65535
readOnlyRootFilesystem: false
seLinux:
rule: 'RunAsAny'
{{- end }}
{{- end }}

9
charts/ingress-nginx/templates/default-backend-deployment.yaml
View file

@ -65,14 +65,7 @@ spec:
{{- end }}
{{- end }}
{{- end }}
securityContext:
capabilities:
drop:
- ALL
runAsUser: {{ .Values.defaultBackend.image.runAsUser }}
runAsNonRoot: {{ .Values.defaultBackend.image.runAsNonRoot }}
allowPrivilegeEscalation: {{ .Values.defaultBackend.image.allowPrivilegeEscalation }}
readOnlyRootFilesystem: {{ .Values.defaultBackend.image.readOnlyRootFilesystem}}
securityContext: {{ include "ingress-nginx.defaultBackend.containerSecurityContext" . | nindent 12 }}
{{- if .Values.defaultBackend.extraEnvs }}
env: {{ toYaml .Values.defaultBackend.extraEnvs | nindent 12 }}
{{- end }}

52
charts/ingress-nginx/templates/default-backend-psp.yaml
View file

@ -4,6 +4,8 @@ apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: {{ include "ingress-nginx.fullname" . }}-backend
annotations:
seccomp.security.alpha.kubernetes.io/allowedProfileNames: "*"
labels:
{{- include "ingress-nginx.labels" . | nindent 4 }}
app.kubernetes.io/component: default-backend
@ -11,28 +13,38 @@ metadata:
{{- toYaml . | nindent 4 }}
{{- end }}
spec:
allowPrivilegeEscalation: false
fsGroup:
ranges:
- max: 65535
min: 1
rule: MustRunAs
requiredDropCapabilities:
- ALL
runAsUser:
rule: MustRunAsNonRoot
seLinux:
rule: RunAsAny
supplementalGroups:
ranges:
- max: 65535
min: 1
rule: MustRunAs
privileged: false
hostPID: false
hostIPC: false
hostNetwork: false
volumes:
- configMap
- emptyDir
- projected
- secret
- downwardAPI
- emptyDir
- secret
- projected
fsGroup:
rule: MustRunAs
ranges:
- min: 1
max: 65535
readOnlyRootFilesystem: true
runAsUser:
rule: MustRunAsNonRoot
runAsGroup:
rule: MustRunAs
ranges:
- min: 1
max: 65535
supplementalGroups:
rule: MustRunAs
ranges:
- min: 1
max: 65535
allowPrivilegeEscalation: false
requiredDropCapabilities:
- ALL
seLinux:
rule: RunAsAny
{{- end }}
{{- end }}

74
charts/ingress-nginx/values.yaml
View file

@ -31,9 +31,13 @@ controller:
digest: sha256:5b161f051d017e55d358435f295f5e9a297e66158f136321d9b04520ec6c48a3
digestChroot: sha256:5976b1067cfbca8a21d0ba53d71f83543a73316a61ea7f7e436d6cf84ddf9b26
pullPolicy: IfNotPresent
runAsNonRoot: true
# www-data -> uid 101
runAsUser: 101
allowPrivilegeEscalation: true
allowPrivilegeEscalation: false
seccompProfile:
type: RuntimeDefault
readOnlyRootFilesystem: false
# -- Use an existing PSP instead of creating one
existingPsp: ""
# -- Configures the controller container name
@ -127,12 +131,15 @@ controller:
podLabels: {}
# key: value
# -- Security Context policies for controller pods
# -- Security context for controller pods
podSecurityContext: {}
# -- See https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ for notes on enabling and using sysctls
# -- sysctls for controller pods
## Ref: https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/
sysctls: {}
# sysctls:
# "net.core.somaxconn": "8192"
# -- Security context for controller containers
containerSecurityContext: {}
# -- Allows customization of the source of the IP address or FQDN to report
# in the ingress status field. By default, it reads the information provided
@ -581,8 +588,18 @@ controller:
extraModules: []
# - name: mytestmodule
# image: registry.k8s.io/ingress-nginx/mytestmodule
# distroless: false
# containerSecurityContext:
# runAsNonRoot: true
# runAsUser: <user-id>
# allowPrivilegeEscalation: false
# seccompProfile:
# type: RuntimeDefault
# capabilities:
# drop:
# - ALL
# readOnlyRootFilesystem: true
# resources: {}
#
# The image must contain a `/usr/local/bin/init_module.sh` executable, which
# will be executed as initContainers, to move its config files within the
@ -590,9 +607,20 @@ controller:
opentelemetry:
enabled: false
name: opentelemetry
image: registry.k8s.io/ingress-nginx/opentelemetry:v20230721-3e2062ee5@sha256:13bee3f5223883d3ca62fee7309ad02d22ec00ff0d7033e3e9aca7a9f60fd472
distroless: true
containerSecurityContext:
runAsNonRoot: true
# -- The image's default user, inherited from its base image `cgr.dev/chainguard/static`.
runAsUser: 65532
allowPrivilegeEscalation: false
seccompProfile:
type: RuntimeDefault
capabilities:
drop:
- ALL
readOnlyRootFilesystem: true
resources: {}
admissionWebhooks:
name: admission
@ -633,8 +661,17 @@ controller:
type: ClusterIP
createSecretJob:
name: create
# -- Security context for secret creation containers
securityContext:
runAsNonRoot: true
runAsUser: 65532
allowPrivilegeEscalation: false
seccompProfile:
type: RuntimeDefault
capabilities:
drop:
- ALL
readOnlyRootFilesystem: true
resources: {}
# limits:
# cpu: 10m
@ -644,8 +681,17 @@ controller:
# memory: 20Mi
patchWebhookJob:
name: patch
# -- Security context for webhook patch containers
securityContext:
runAsNonRoot: true
runAsUser: 65532
allowPrivilegeEscalation: false
seccompProfile:
type: RuntimeDefault
capabilities:
drop:
- ALL
readOnlyRootFilesystem: true
resources: {}
patch:
enabled: true
@ -667,10 +713,8 @@ controller:
tolerations: []
# -- Labels to be added to patch job resources
labels: {}
securityContext:
runAsNonRoot: true
runAsUser: 2000
fsGroup: 2000
# -- Security context for secret creation & webhook patch pods
securityContext: {}
# Use certmanager to generate webhook certs
certManager:
enabled: false
@ -796,11 +840,13 @@ defaultBackend:
## repository:
tag: "1.5"
pullPolicy: IfNotPresent
runAsNonRoot: true
# nobody user -> uid 65534
runAsUser: 65534
runAsNonRoot: true
readOnlyRootFilesystem: true
allowPrivilegeEscalation: false
seccompProfile:
type: RuntimeDefault
readOnlyRootFilesystem: true
# -- Use an existing PSP instead of creating one
existingPsp: ""
extraArgs: {}
@ -846,15 +892,9 @@ defaultBackend:
# effect: "NoSchedule|PreferNoSchedule|NoExecute(1.6 only)"
affinity: {}
# -- Security Context policies for controller pods
# See https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ for
# notes on enabling and using sysctls
##
# -- Security context for default backend pods
podSecurityContext: {}
# -- Security Context policies for controller main container.
# See https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/ for
# notes on enabling and using sysctls
##
# -- Security context for default backend containers
containerSecurityContext: {}
# -- Labels to add to the pod container metadata
podLabels: {}