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Secrets

kpack utilizes kubernetes secrets to configure credentials to publish images to docker registries and access private github repositories.

Docker Registry Secrets

kubernetes.io/basic-auth secrets are used with a build.pivotal.io/docker annotation that references a docker registry.

GCR example

apiVersion: v1
kind: Secret
metadata:
  name: basic-docker-user-pass
  annotations:
    build.pivotal.io/docker: gcr.io
type: kubernetes.io/basic-auth
stringData:
  username: <username>
  password: <password>

Docker Hub example

apiVersion: v1
kind: Secret
metadata:
  name: basic-docker-user-pass
  annotations:
    build.pivotal.io/docker: index.docker.io
type: kubernetes.io/basic-auth
stringData:
  username: <username>
  password: <password>

Note: The secret must be annotated with the registry prefix for its corresponding registry. For dockerhub this should be index.docker.io. For GCR this should be gcr.io.

Git Registry Secrets

kubernetes.io/basic-auth secrets are used with a build.pivotal.io/git annotation that references a remote git location.

For github, this would look like

apiVersion: v1
kind: Secret
metadata:
  name: basic-git-user-pass
  annotations:
    build.pivotal.io/git: https://github.com
type: kubernetes.io/basic-auth
stringData:
  username: <username>
  password: <password>

If your github account has 2 factor auth configured, create a personal access token using this procedure.

Configure your secret for github like this:

apiVersion: v1
kind: Secret
metadata:
  name: basic-git-user-pass
  annotations:
    build.pivotal.io/git: https://github.com
type: kubernetes.io/basic-auth
stringData:
  username: <generated-token>
  password: x-oauth-basic

Service Account

To use these secrets with kpack create a service account and reference the service account in image and build config. When configuring the image resource, reference the name of your registry credential and the name of your git credential.

apiVersion: v1
kind: ServiceAccount
metadata:
  name: service-account
secrets:
  - name: basic-docker-user-pass
  - name: basic-git-user-pass