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Merge pull request #10 from cpanato/add-cosigned
charts: move cosigned chart from s/cosign to the helm repo
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@@ -14,6 +14,8 @@ jobs: | |
with: | ||
fetch-depth: 0 | ||
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- uses: sigstore/[email protected] | ||
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- name: Set up Helm | ||
uses: azure/setup-helm@v1 | ||
with: | ||
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@@ -26,17 +28,26 @@ jobs: | |
- name: Set up chart-testing | ||
uses: helm/[email protected] | ||
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- name: Run chart-testing (list-changed) | ||
id: list-changed | ||
run: | | ||
changed=$(ct list-changed --config ct.yaml) | ||
if [[ -n "$changed" ]]; then | ||
echo "::set-output name=changed::true" | ||
fi | ||
- name: Run chart-testing (lint) | ||
run: ct lint --config ct.yaml --all | ||
run: ct lint --config ct.yaml | ||
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- name: "Add NGINX Ingress Repository" | ||
run: "helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx" | ||
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- name: Create KIND Cluster | ||
uses: helm/[email protected] | ||
if: steps.list-changed.outputs.changed == 'true' | ||
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- name: Install Ingress Controller | ||
run: "helm install ingress-nginx/ingress-nginx --generate-name --set controller.service.type='NodePort' --set controller.admissionWebhooks.enabled=false" | ||
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- name: Run chart-testing (install) | ||
run: ct install --config ct.yaml --all | ||
run: ct install --config ct.yaml |
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@@ -14,4 +14,5 @@ $ helm repo update | |
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## Charts | ||
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* [rekor](charts/rekor) | ||
* [rekor](charts/rekor) | ||
* [cosigned](charts/cosigned) |
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.DS_Store | ||
# Common VCS dirs | ||
.git/ | ||
.gitignore | ||
.bzr/ | ||
.bzrignore | ||
.hg/ | ||
.hgignore | ||
.svn/ | ||
# Common backup files | ||
*.swp | ||
*.bak | ||
*.tmp | ||
*.orig | ||
*~ | ||
# Various IDEs | ||
.project | ||
.idea/ | ||
*.tmproj | ||
.vscode/ |
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apiVersion: v2 | ||
description: The Helm chart for Cosigned | ||
home: https://github.com/sigstore/cosign | ||
sources: | ||
- https://github.com/sigstore/cosign | ||
name: cosigned | ||
type: application | ||
version: v0.0.3-dev | ||
appVersion: v1.2.0 | ||
maintainers: | ||
- name: dlorenc | ||
- name: hectorj2f |
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# Cosigned Admission Webhook | ||
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## Requirements | ||
* Kubernetes cluster with rights to install admission webhooks | ||
* Helm | ||
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## Deploy `cosigned` Helm Chart | ||
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Generate a keypair to validate the signatures of the deployed Kubernetes resources and their images: | ||
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```shell | ||
export COSIGN_PASSWORD=<my_cosign_password> | ||
cosign generate-key-pair | ||
``` | ||
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The previous command generates two key files `cosign.key` and `cosign.pub`. Next, create a secret to validate the signatures: | ||
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```shell | ||
kubectl create namespace cosign-system | ||
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kubectl create secret generic mysecret -n cosign-system --from-file=cosign.pub=./cosign.pub --from-file=cosign.key=./cosign.key --from-literal=cosign.password=$COSING_PASSWORD | ||
``` | ||
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Install `cosigned` using Helm and setting the value of the secret key reference to `mysecret` that you created above: | ||
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```shell | ||
helm repo add sigstore https://sigstore.github.io/helm-charts | ||
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helm repo update | ||
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helm install cosigned -n cosign-system sigstore/cosigned --devel --set webhook.secretKeyRef.name=mysecret | ||
``` | ||
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To enable the Admission Controller to check the signed images you will need to add the following annotation in the namespaces that you are interested to watch: | ||
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Annotation: `cosigned.sigstore.dev/include: "true"` | ||
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```yaml | ||
apiVersion: v1 | ||
kind: Namespace | ||
metadata: | ||
labels: | ||
cosigned.sigstore.dev/include: "true" | ||
kubernetes.io/metadata.name: my-namespace | ||
name: my-namespace | ||
spec: | ||
finalizers: | ||
- kubernetes | ||
``` | ||
Then when creating, for example, a Deployment that does not have the images signed you will get the following error: | ||
```shell | ||
kubectl apply -f my-deployment.yaml | ||
Error from server (BadRequest): error when creating "my-deployment.yaml": admission webhook "cosigned.sigstore.dev" denied the request: validation failed: invalid image signature: spec.template.spec.containers[0].image | ||
``` |
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cosign: | ||
cosignKey: 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 | ||
cosignPub: LS0tLS1CRUdJTiBQVUJMSUMgS0VZLS0tLS0KTUZrd0V3WUhLb1pJemowQ0FRWUlLb1pJemowREFRY0RRZ0FFZ3VQMEd0aEUrTGYxQzZyWlQ4ZzlDbUtWQk5ReApicnZTWTdGMG94ODFUVzlBcExrSjVIdmtTNzJVQ0ZkZjJaV2JNMXkxZEMyS0FIM1l0Q1lOM1JCdHp3PT0KLS0tLS1FTkQgUFVCTElDIEtFWS0tLS0tCg== | ||
cosignPassword: aG9ua0AxMjM= |
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{{/* | ||
Expand the name of the chart. | ||
*/}} | ||
{{- define "cosigned.name" -}} | ||
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }} | ||
{{- end }} | ||
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{{/* | ||
Create a default fully qualified app name. | ||
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec). | ||
If release name contains chart name it will be used as a full name. | ||
*/}} | ||
{{- define "cosigned.fullname" -}} | ||
{{- if .Values.fullnameOverride }} | ||
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }} | ||
{{- else }} | ||
{{- $name := default .Chart.Name .Values.nameOverride }} | ||
{{- if contains $name .Release.Name }} | ||
{{- .Release.Name | trunc 63 | trimSuffix "-" }} | ||
{{- else }} | ||
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }} | ||
{{- end }} | ||
{{- end }} | ||
{{- end }} | ||
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{{/* | ||
Create chart name and version as used by the chart label. | ||
*/}} | ||
{{- define "cosigned.chart" -}} | ||
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }} | ||
{{- end }} | ||
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{{/* | ||
Common labels | ||
*/}} | ||
{{- define "cosigned.labels" -}} | ||
helm.sh/chart: {{ include "cosigned.chart" . }} | ||
{{ include "cosigned.selectorLabels" . }} | ||
{{- if .Chart.AppVersion }} | ||
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }} | ||
{{- end }} | ||
app.kubernetes.io/managed-by: {{ .Release.Service }} | ||
{{- end }} | ||
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{{/* | ||
Selector labels | ||
*/}} | ||
{{- define "cosigned.selectorLabels" -}} | ||
app.kubernetes.io/name: {{ include "cosigned.name" . }} | ||
app.kubernetes.io/instance: {{ .Release.Name }} | ||
{{- end }} | ||
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{{/* | ||
Create the name of the service account to use | ||
*/}} | ||
{{- define "cosigned.serviceAccountName" -}} | ||
{{- if .Values.serviceAccount.create }} | ||
{{- default (include "cosigned.fullname" .) .Values.serviceAccount.name }} | ||
{{- else }} | ||
{{- default "default" .Values.serviceAccount.name }} | ||
{{- end }} | ||
{{- end }} | ||
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{{/* | ||
Self-signed certificate authority issuer name | ||
*/}} | ||
{{- define "cosigned.CAIssuerName" -}} | ||
{{- if .Values.certificates.ca.issuer.name -}} | ||
{{ .Values.certificates.ca.issuer.name }} | ||
{{- else -}} | ||
{{ template "cosigned.fullname" . }}-ca-issuer | ||
{{- end -}} | ||
{{- end -}} | ||
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{{/* | ||
CA Certificate issuer name | ||
*/}} | ||
{{- define "cosigned.CAissuerName" -}} | ||
{{- if .Values.certificates.selfSigned -}} | ||
{{ template "cosigned.CAIssuerName" . }} | ||
{{- else -}} | ||
{{ required "A valid .Values.certificates.ca.issuer.name is required!" .Values.certificates.issuer.name }} | ||
{{- end -}} | ||
{{- end -}} | ||
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{{/* | ||
CA signed certificate issuer name | ||
*/}} | ||
{{- define "cosigned.IssuerName" -}} | ||
{{- if .Values.certificates.issuer.name -}} | ||
{{ .Values.certificates.issuer.name }} | ||
{{- else -}} | ||
{{ template "cosigned.fullname" . }}-issuer | ||
{{- end -}} | ||
{{- end -}} | ||
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{{/* | ||
Certificate issuer name | ||
*/}} | ||
{{- define "cosigned.issuerName" -}} | ||
{{- if .Values.certificates.selfSigned -}} | ||
{{ template "cosigned.IssuerName" . }} | ||
{{- else -}} | ||
{{ required "A valid .Values.certificates.issuer.name is required!" .Values.certificates.issuer.name }} | ||
{{- end -}} | ||
{{- end -}} | ||
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{{/* | ||
Create the image path for the passed in image field | ||
*/}} | ||
{{- define "cosigned.image" -}} | ||
{{- if eq (substr 0 7 .version) "sha256:" -}} | ||
{{- printf "%s@%s" .repository .version -}} | ||
{{- else -}} | ||
{{- printf "%s:%s" .repository .version -}} | ||
{{- end -}} | ||
{{- end -}} |
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charts/cosigned/templates/webhook/clusterrole_webhook.yaml
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apiVersion: rbac.authorization.k8s.io/v1 | ||
kind: ClusterRole | ||
metadata: | ||
name: {{ template "cosigned.fullname" . }}-webhook | ||
labels: | ||
{{- include "cosigned.labels" . | nindent 4 }} | ||
control-plane: {{ template "cosigned.fullname" . }}-webhook | ||
rules: | ||
- apiGroups: [""] | ||
resources: ["events"] | ||
verbs: ["create"] | ||
# Allow the reconciliation of exactly our validating webhook. | ||
- apiGroups: ["admissionregistration.k8s.io"] | ||
resources: ["validatingwebhookconfigurations"] | ||
verbs: ["list", "watch"] | ||
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- apiGroups: ["admissionregistration.k8s.io"] | ||
resources: ["validatingwebhookconfigurations"] | ||
verbs: ["get", "update"] | ||
resourceNames: ["cosigned.sigstore.dev"] | ||
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- apiGroups: [""] | ||
resources: ["namespaces"] | ||
verbs: ["get", "list"] | ||
# The webhook configured the namespace as the OwnerRef on various cluster-scoped resources, | ||
# which requires we can Get the system namespace. | ||
resourceNames: [ "{{ .Release.Namespace }}" ] |
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15
charts/cosigned/templates/webhook/clusterrolebindings_webhook.yaml
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apiVersion: rbac.authorization.k8s.io/v1 | ||
kind: ClusterRoleBinding | ||
metadata: | ||
name: {{ template "cosigned.fullname" . }}-webhook | ||
labels: | ||
{{- include "cosigned.labels" . | nindent 4 }} | ||
control-plane: {{ template "cosigned.fullname" . }}-webhook | ||
roleRef: | ||
apiGroup: rbac.authorization.k8s.io | ||
kind: ClusterRole | ||
name: {{ template "cosigned.fullname" . }}-webhook | ||
subjects: | ||
- kind: ServiceAccount | ||
name: {{ template "cosigned.fullname" . }}-webhook | ||
namespace: {{ .Release.Namespace }} |
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apiVersion: v1 | ||
kind: ConfigMap | ||
metadata: | ||
labels: | ||
{{- include "cosigned.labels" . | nindent 4 }} | ||
control-plane: {{ template "cosigned.fullname" . }}-webhook | ||
name: {{ template "cosigned.fullname" . }}-webhook-logging | ||
namespace: {{ .Release.Namespace }} | ||
data: | ||
zap-logger-config: |- | ||
{ | ||
"level": "info", | ||
"development": false, | ||
"outputPaths": ["stdout"], | ||
"errorOutputPaths": ["stderr"], | ||
"encoding": "json", | ||
"encoderConfig": { | ||
"timeKey": "ts", | ||
"levelKey": "level", | ||
"nameKey": "logger", | ||
"callerKey": "caller", | ||
"messageKey": "msg", | ||
"stacktraceKey": "stacktrace", | ||
"lineEnding": "", | ||
"levelEncoder": "", | ||
"timeEncoder": "iso8601", | ||
"durationEncoder": "", | ||
"callerEncoder": "" | ||
} | ||
} | ||
# Log level overrides | ||
# Changes are be picked up immediately. | ||
loglevel.controller: "info" | ||
loglevel.webhook: "info" |
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apiVersion: v1 | ||
kind: Secret | ||
metadata: | ||
labels: | ||
{{- include "cosigned.labels" . | nindent 4 }} | ||
name: {{ template "cosigned.fullname" . }}-cosign-key | ||
namespace: {{ .Release.Namespace }} | ||
type: Opaque | ||
data: | ||
cosign.key: {{ .Values.cosign.cosignKey}} | ||
cosign.password: {{ .Values.cosign.cosignPassword}} | ||
cosign.pub: {{ .Values.cosign.cosignPub}} |
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