copyright

lastupdated

keywords

subcollection

years
2014, 2019

2019-09-24

kubernetes, iks, registry, pull secret, secrets

containers

{:new_window: target="_blank"} {:shortdesc: .shortdesc} {:screen: .screen} {:pre: .pre} {:table: .aria-labeledby="caption"} {:codeblock: .codeblock} {:tip: .tip} {:note: .note} {:important: .important} {:deprecated: .deprecated} {:download: .download} {:preview: .preview}

Building containers from images

{: #images}

A Docker image is the basis for every container that you create with {{site.data.keyword.containerlong}}. {:shortdesc}

An image is created from a Dockerfile, which is a file that contains instructions to build the image. A Dockerfile might reference build artifacts in its instructions that are stored separately, such as an app, the app's configuration, and its dependencies.

Planning image registries

{: #planning_images}

Images are typically stored in a registry that can either be accessible by the public (public registry) or set up with limited access for a small group of users (private registry). {:shortdesc}

Public registries, such as Docker Hub, can be used to get started with Docker and Kubernetes to create your first containerized app in a cluster. But when it comes to enterprise applications, use a private registry, like the one provided in {{site.data.keyword.registryshort_notm}} to protect your images from being used and changed by unauthorized users. Private registries must be set up by the cluster admin to ensure that the credentials to access the private registry are available to the cluster users.

You can use multiple registries with {{site.data.keyword.containerlong_notm}} to deploy apps to your cluster.

Registry	Description	Benefit
{{site.data.keyword.registryshort_notm}}	With this option, you can set up your own secured Docker image repository in {{site.data.keyword.registryshort_notm}} where you can safely store and share images between cluster users.	Manage access to images in your account. Use {{site.data.keyword.IBM_notm}} provided images and sample apps, such as {{site.data.keyword.IBM_notm}} Liberty, as a parent image and add your own app code to it. Automatic scanning of images for potential vulnerabilities by Vulnerability Advisor, including OS specific recommendations to fix them.
Any other private registry	Connect any existing private registry to your cluster by creating an image pull secret . The secret is used to securely save your registry URL and credentials in a Kubernetes secret.	Use existing private registries independent of their source (Docker Hub, organization owned registries, or other private Cloud registries).
Public Docker Hub{: #dockerhub}	Use this option to use existing public images from Docker Hub directly in your Kubernetes deployment when no Dockerfile changes are needed. Note: Keep in mind that this option might not meet your organization's security requirements, like access management, vulnerability scanning, or app privacy.	No additional setup is needed for your cluster. Includes a variety of open-source applications.
{: caption="Public and private image registry options" caption-side="top"}

After you set up an image registry, cluster users can use the images to deploy apps to the cluster.

Learn more about securing your personal information when you work with container images.

Setting up trusted content for container images

{: #trusted_images}

You can build containers from trusted images that are signed and stored in {{site.data.keyword.registryshort_notm}}, and prevent deployments from unsigned or vulnerable images. {:shortdesc}

Sign images for trusted content. After you set up trust for your images, you can manage trusted content and signers that can push images to your registry.
To enforce a policy that only signed images can be used to build containers in your cluster, add Container Image Security Enforcement.
Deploy your app.
1. Deploy to the default Kubernetes namespace.
2. Deploy to a different Kubernetes namespace, or from a different {{site.data.keyword.cloud_notm}} region or account.

Deploying containers from an {{site.data.keyword.registryshort_notm}} image to the `default` Kubernetes namespace

{: #namespace}

You can deploy containers to your cluster from an IBM-provided public image or a private image that is stored in your {{site.data.keyword.registryshort_notm}} namespace. For more information about how your cluster accesses registry images, see Understanding how your cluster is authorized to pull images from {{site.data.keyword.registrylong_notm}}. {:shortdesc}

Before you begin:

Set up a namespace in {{site.data.keyword.registryshort_notm}} and push images to this namespace.
Create a cluster.
If you have an existing cluster that was created before 25 February 2019, update your cluster to use the API key imagePullSecret.
Log in to your account. If applicable, target the appropriate resource group. Set the context for your cluster.

To deploy a container into the default namespace of your cluster:

Create a deployment configuration file that is named mydeployment.yaml.
Define the deployment and the image to use from your namespace in {{site.data.keyword.registryshort_notm}}.
```
apiVersion: apps/v1
kind: Deployment
metadata:
  name: <app_name>-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: <app_name>
  template:
    metadata:
      labels:
        app: <app_name>
    spec:
      containers:
      - name: <app_name>
        image: <region>.icr.io/<namespace>/<my_image>:<tag>
```
{: codeblock}

Replace the image URL variables with the information for your image:
- <app_name>: The name of your app.
- <region>: The regional {{site.data.keyword.registryshort_notm}} API endpoint for the registry domain. To list the domain for the region that you are logged in to, run ibmcloud cr api.
- <namespace>: The registry namespace. To get your namespace information, run ibmcloud cr namespace-list.
- <my_image>:<tag>: The image and tag that you want to use to build the container. To get the images available in your registry, run ibmcloud cr images.
Create the deployment in your cluster.
```
kubectl apply -f mydeployment.yaml
```
{: pre}

Understanding how to authorize your cluster to pull images from a registry

{: #cluster_registry_auth}

To pull images from a registry, your {{site.data.keyword.containerlong_notm}} cluster uses a special type of Kubernetes secret, an imagePullSecret. This image pull secret stores the credentials to access a container registry. The container registry can be your namespace in {{site.data.keyword.registrylong_notm}}, a namespace in {{site.data.keyword.registrylong_notm}} that belongs to a different {{site.data.keyword.cloud_notm}} account, or any other private registry such as Docker. Your cluster is set up to pull images from your namespace in {{site.data.keyword.registrylong_notm}} and deploy containers from these images to the default Kubernetes namespace in your cluster. If you need to pull images in other cluster Kubernetes namespaces or other registries, you must set up the image pull secret. {:shortdesc}

How is my cluster set up to pull images from the default Kubernetes namespace?
When you create a cluster, the cluster has an {{site.data.keyword.cloud_notm}} IAM service ID that is given an IAM Reader service access role policy to {{site.data.keyword.registrylong_notm}}. The service ID credentials are impersonated in a non-expiring API key that is stored in image pull secrets in your cluster. The image pull secrets are added to the default Kubernetes namespace and the list of secrets in the default service account for this namespace. By using image pull secrets, your deployments can pull (read-only access) images in your global and regional registry to build containers in the default Kubernetes namespace. The global registry securely stores public, IBM-provided images that you can refer to across your deployments instead of having different references for images that are stored in each regional registry. The regional registry securely stores your own private Docker images.

Can I restrict pull access to a certain regional registry?
Yes, you can edit the existing IAM policy of the service ID that restricts the Reader service access role to that regional registry or a registry resource such as a namespace. Before you can customize registry IAM policies, you must enable {{site.data.keyword.cloud_notm}} IAM policies for {{site.data.keyword.registrylong_notm}}.

Want to make your registry credentials even more secured? Ask your cluster admin to enable {{site.data.keyword.keymanagementservicefull}} in your cluster to encrypt Kubernetes secrets in your cluster, such as the imagePullSecret that stores your registry credentials. {: tip}

Can I pull images in Kubernetes namespaces other than default?
Not by default. By using the default cluster setup, you can deploy containers from any image that is stored in your {{site.data.keyword.registrylong_notm}} namespace into the default Kubernetes namespace of your cluster. To use these images in other Kubernetes namespaces or other {{site.data.keyword.cloud_notm}} accounts, you have the option to copy or create your own image pull secret.

Can I pull images from a different {{site.data.keyword.cloud_notm}} account?
Yes, create an API key in the {{site.data.keyword.cloud_notm}} account that you want to use. Then, create an image pull secret that stores those API key credentials in each cluster and cluster namespace that you want to pull from. Follow along with this example that uses an authorized service ID API key.

To use a non-{{site.data.keyword.cloud_notm}} registry such as Docker, see Accessing images that are stored in other private registries.

Does the API key need to be for a service ID? What happens if I reach the limit of service IDs for my account?
The default cluster setup creates a service ID to store {{site.data.keyword.cloud_notm}} IAM API key credentials in the image pull secret. However, you can also create an API key for an individual user and store those credentials in an image pull secret. If you reach the IAM limit for service IDs, your cluster is created without the service ID and image pull secret and cannot pull images from the icr.io registry domains by default. You must create your own image pull secret, but by using an API key for an individual user such as a functional ID, not an {{site.data.keyword.cloud_notm}} IAM service ID.

My cluster image pull secret uses a registry token. Does a token still work?

The previous method of authorizing cluster access to {{site.data.keyword.registrylong_notm}} via tokens is supported but deprecated. {: deprecated}

Tokens authorize access to the deprecated registry.bluemix.net registry domains, whereas API keys authorize access to the icr.io registry domains. Existing clusters might have both tokens and API key-based image pull secrets, but new clusters only use API keys. Therefore by default, new clusters can pull images from only icr.io domains in the default Kubernetes namespace.

Before the deprecated tokens and registry.bluemix.net domains become unsupported, update your cluster image pull secrets to use the API key method for the default Kubernetes namespace and any other namespaces or accounts you might use. Then, update your deployments to pull from the icr.io registry domains.

After I copy or create an image pull secret in another Kubernetes namespace, am I done?
Not quite. Your containers must be authorized to pull images by using the secret that you created. You can add the image pull secret to the service account for the namespace, or refer to the secret in each deployment. For instructions, see Using the image pull secret to deploy containers.

Updating existing clusters to use the API key image pull secret

{: #imagePullSecret_migrate_api_key}

New {{site.data.keyword.containerlong_notm}} clusters store an API key in an image pull secret to authorize access to {{site.data.keyword.registrylong_notm}}. With these image pull secrets, you can deploy containers from images that are stored in the icr.io registry domains. For clusters that were created before 25 February 2019, you must update your cluster to store an API key instead of a registry token in the image pull secret. {: shortdesc}

Before you begin:

Log in to your account. If applicable, target the appropriate resource group. Set the context for your cluster.
Make sure that you have the following permissions:
- {{site.data.keyword.cloud_notm}} IAM Operator or Administrator platform role for {{site.data.keyword.containerlong_notm}}. The account owner can give you the role by running:
```
ibmcloud iam user-policy-create <your_user_email> --service-name containers-kubernetes --roles Administrator,Operator
```
  {: pre}
- {{site.data.keyword.cloud_notm}} IAM Administrator platform role for {{site.data.keyword.registrylong_notm}}, across all regions and resource groups. The policy cannot be scoped to a particular region or resource group. The account owner can give you the role by running:
```
ibmcloud iam user-policy-create <your_user_email> --service-name container-registry --roles Administrator
```
  {: pre}

To update your cluster image pull secret in the default Kubernetes namespace:

Get your cluster ID.
```
ibmcloud ks cluster ls
```
{: pre}
Run the following command to create a service ID for the cluster, assign the service ID an IAM Reader service role for {{site.data.keyword.registrylong_notm}}, create an API key to impersonate the service ID credentials, and store the API key in a Kubernetes image pull secret in the cluster. The image pull secret is in the default Kubernetes namespace.
```
ibmcloud ks cluster pull-secret apply --cluster <cluster_name_or_ID>
```
{: pre}

When you run this command, the creation of IAM credentials and image pull secrets is initiated and can take some time to complete. You cannot deploy containers that pull an image from the {{site.data.keyword.registrylong_notm}} icr.io domains until the image pull secrets are created. {: important}

Verify that the image pull secrets are created in your cluster. Note that you have a separate image pull secret for each {{site.data.keyword.registrylong_notm}} region.

kubectl get secrets

{: pre} Example output:

default-us-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-uk-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-de-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-au-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-jp-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-icr-io                             kubernetes.io/dockerconfigjson        1         16d

{: screen}

Update your container deployments to pull images from the icr.io domain name.
Optional: If you have a firewall, make sure you allow outbound network traffic to the registry subnets for the domains that you use.

What's next?

To pull images in Kubernetes namespaces other than default or from other {{site.data.keyword.cloud_notm}} accounts, copy or create another image pull secret.
To restrict the image pull secret access to particular registry resources such as namespaces or regions:
1. Make sure that {{site.data.keyword.cloud_notm}} IAM policies for {{site.data.keyword.registrylong_notm}} are enabled.
2. Edit the {{site.data.keyword.cloud_notm}} IAM policies for the service ID, or create another image pull secret.

Using an image pull secret to access other cluster Kubernetes namespaces, other {{site.data.keyword.cloud_notm}} accounts, or external private registries

{: #other}

Set up your own image pull secret in your cluster to deploy containers to Kubernetes namespaces other than default, use images that are stored in other {{site.data.keyword.cloud_notm}} accounts, or use images that are stored in external private registries. Further, you might create your own image pull secret to apply IAM access policies that restrict permissions to specific registry image namespaces, or actions (such as push or pull). {:shortdesc}

After you create the image pull secret, your containers must use the secret to be authorized to pull an image from the registry. You can add the image pull secret to the service account for the namespace, or refer to the secret in each deployment. For instructions, see Using the image pull secret to deploy containers.

Image pull secrets are valid only for the Kubernetes namespaces that they were created for. Repeat these steps for every namespace where you want to deploy containers. Images from DockerHub do not require image pull secrets. {: tip}

Before you begin:

Set up a namespace in {{site.data.keyword.registryshort_notm}} and push images to this namespace.
Create a cluster.
If you have an existing cluster that was created before 25 February 2019, update your cluster to use the API key image pull secret.
Log in to your account. If applicable, target the appropriate resource group. Set the context for your cluster.

To use your own image pull secret, choose among the following options: - [Copy the image pull secret](#copy_imagePullSecret) from the default Kubernetes namespace to other namespaces in your cluster. - [Create new IAM API key credentials and store them in an image pull secret](#other_registry_accounts) to access images in other {{site.data.keyword.cloud_notm}} accounts or to apply IAM policies that restrict access to certain registry domains or namespaces. - [Create an image pull secret to access images in external private registries](#private_images).
If you already created an image pull secret in your namespace that you want to use in your deployment, see [Deploying containers by using the created `imagePullSecret`](#use_imagePullSecret).

Copying an existing image pull secret

{: #copy_imagePullSecret}

You can copy an image pull secret, such as the one that is automatically created for the default Kubernetes namespace, to other namespaces in your cluster. If you want to use different {{site.data.keyword.cloud_notm}} IAM API key credentials for this namespace such as to restrict access to specific namespaces, or to pull images from other {{site.data.keyword.cloud_notm}} accounts, create an image pull secret instead. {: shortdesc}

List available Kubernetes namespaces in your cluster, or create a namespace to use.

kubectl get namespaces

{: pre}

Example output:

default          Active    79d
ibm-cert-store   Active    79d
ibm-system       Active    79d
istio-system     Active    34d
kube-public      Active    79d
kube-system      Active    79d

{: screen}

To create a namespace:

kubectl create namespace <namespace_name>

{: pre}

List the existing image pull secrets in the default Kubernetes namespace for {{site.data.keyword.registrylong_notm}}.

kubectl get secrets -n default | grep icr

{: pre} Example output:

default-us-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-uk-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-de-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-au-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-jp-icr-io                          kubernetes.io/dockerconfigjson        1         16d
default-icr-io                             kubernetes.io/dockerconfigjson        1         16d

{: screen}

Copy each image pull secret from the default namespace to the namespace of your choice. The new image pull secrets are named <namespace_name>-icr-<region>-io. If you pull images from only a certain region, you can copy only that region's image pull secret.

kubectl get secret default-us-icr-io -o yaml | sed 's/default/<new-namespace>/g' | kubectl -n <new-namespace> create -f -

{: pre}

kubectl get secret default-uk-icr-io -o yaml | sed 's/default/<new-namespace>/g' | kubectl -n <new-namespace> create -f -

{: pre}

kubectl get secret default-de-icr-io -o yaml | sed 's/default/<new-namespace>/g' | kubectl -n <new-namespace> create -f -

{: pre}

kubectl get secret default-au-icr-io -o yaml | sed 's/default/<new-namespace>/g' | kubectl -n <new-namespace> create -f -

{: pre}

kubectl get secret default-jp-icr-io -o yaml | sed 's/default/<new-namespace>/g' | kubectl -n <new-namespace> create -f -

{: pre}

kubectl get secret default-icr-io -o yaml | sed 's/default/<new-namespace>/g' | kubectl -n <new-namespace> create -f -

{: pre}

Verify that the secrets are created successfully.
```
kubectl get secrets -n <namespace_name>
```
{: pre}
Use the image pull secret to deploy containers. You can choose between referring to the image pull secret separately in each deployment, or adding the image pull secret to a Kubernetes service account so that any pod in the namespace can use the image pull secret when you deploy a container.

Creating an image pull secret with different IAM API key credentials for more control or access to images in other {{site.data.keyword.cloud_notm}} accounts

{: #other_registry_accounts}

You can assign {{site.data.keyword.cloud_notm}} IAM access policies to users or a service ID to restrict permissions to specific registry image namespaces or actions (such as push or pull). Then, create an API key and store these registry credentials in an image pull secret for your cluster. {: shortdesc}

For example, to access images in other {{site.data.keyword.cloud_notm}} accounts, create an API key that stores the {{site.data.keyword.registryshort_notm}} credentials of a user or service ID in that account. Then, in your cluster's account, save the API key credentials in an image pull secret for each cluster and cluster namespace.

The following steps create an API key that stores the credentials of an {{site.data.keyword.cloud_notm}} IAM service ID. Instead of using a service ID, you might want to create an API key for a user ID that has an {{site.data.keyword.cloud_notm}} IAM service access policy to {{site.data.keyword.registryshort_notm}}. However, make sure that the user is a functional ID or have a plan in case the user leaves so that the cluster can still access the registry. {: note}

List available Kubernetes namespaces in your cluster, or create a namespace to use where you want to deploy containers from your registry images.

kubectl get namespaces

{: pre}

Example output:

default          Active    79d
ibm-cert-store   Active    79d
ibm-system       Active    79d
istio-system     Active    34d
kube-public      Active    79d
kube-system      Active    79d

{: screen}

To create a namespace:

kubectl create namespace <namespace_name>

{: pre}

Create an {{site.data.keyword.cloud_notm}} IAM service ID for your cluster that is used for the IAM policies and API key credentials in the image pull secret. Be sure to give the service ID a description that helps you retrieve the service ID later, such as including both the cluster and namespace name.
```
ibmcloud iam service-id-create <cluster_name>-<kube_namespace>-id --description "Service ID for IBM Cloud Container Registry in Kubernetes cluster <cluster_name> namespace <kube_namespace>"
```
{: pre}

Create a custom {{site.data.keyword.cloud_notm}} IAM policy for your cluster service ID that grants access to {{site.data.keyword.registryshort_notm}}.

ibmcloud iam service-policy-create <cluster_service_ID> --roles <service_access_role> --service-name container-registry [--region <IAM_region>] [--resource-type namespace --resource <registry_namespace>]

{: pre}

Understanding this command's components

Understanding this command's components
`<cluster_service_ID>`	Required. Replace with the `--id` service ID that you previously created for your Kubernetes cluster.
`--service-name container-registry`	Required. Enter `container-registry` so that the IAM policy is for {{site.data.keyword.registrylong_notm}}.
`--roles <service_access_role>`	Required. Enter the [service access role for {{site.data.keyword.registrylong_notm}}](/docs/services/Registry?topic=registry-iam#service_access_roles) that you want to scope the service ID access to. Possible values are `Reader`, `Writer`, and `Manager`.
`--region <IAM_region>`	Optional. If you want to scope the access policy to certain IAM regions, enter the regions in a comma-separated list. Possible values are `au-syd`, `eu-gb`, `eu-de`, `jp-tok`, `us-south`, and `global`.
`--resource-type namespace --resource <registry_namespace>`	Optional. If you want to limit access to only images in certain [{{site.data.keyword.registrylong_notm}} namespaces](/docs/services/Registry?topic=registry-registry_overview#registry_namespaces), enter `namespace` for the resource type and specify the ``. To list registry namespaces, run `ibmcloud cr namespaces`.

Create an API key for the service ID. Name the API key similar to your service ID, and include the service ID that you previously created, ``<cluster_name>-<kube_namespace>-id`. Be sure to give the API key a description that helps you retrieve the key later.
```
ibmcloud iam service-api-key-create <cluster_name>-<kube_namespace>-key <cluster_name>-<kube_namespace>-id --description "API key for service ID <service_id> in Kubernetes cluster <cluster_name> namespace <kube_namespace>"
```
{: pre}

Retrieve your API Key value from the output of the previous command.

Please preserve the API key! It cannot be retrieved after it's created.

Name          <cluster_name>-<kube_namespace>-key   
Description   key_for_registry_for_serviceid_for_kubernetes_cluster_multizone_namespace_test   
Bound To      crn:v1:bluemix:public:iam-identity::a/1bb222bb2b33333ddd3d3333ee4ee444::serviceid:ServiceId-ff55555f-5fff-6666-g6g6-777777h7h7hh   
Created At    2019-02-01T19:06+0000   
API Key       i-8i88ii8jjjj9jjj99kkkkkkkkk_k9-llllll11mmm1   
Locked        false   
UUID          ApiKey-222nn2n2-o3o3-3o3o-4p44-oo444o44o4o4

{: screen}

Create a Kubernetes image pull secret to store the API key credentials in the cluster's namespace. Repeat this step for each icr.io domain, Kubernetes namespace, and cluster that you want to pull images from registry with this service ID's IAM credentials.

kubectl --namespace <kubernetes_namespace> create secret docker-registry <secret_name> --docker-server=<registry_URL> --docker-username=iamapikey --docker-password=<api_key_value> --docker-email=<docker_email>

{: pre}

Understanding this command's components

Understanding this command's components
`--namespace <kubernetes_namespace>`	Required. Specify the Kubernetes namespace of your cluster that you used for the service ID name.
`<secret_name>`	Required. Enter a name for your image pull secret.
`--docker-server <registry_URL>`	Required. Set the URL to the image registry where your registry namespace is set up. Available registry domains: AP North (Tokyo): `jp.icr.io` AP South (Sydney): `au.icr.io` EU Central (Frankfurt): `de.icr.io` UK South (London): `uk.icr.io` US South (Dallas): `us.icr.io`
`--docker-username iamapikey`	Required. Enter the user name to log in to your private registry. For {{site.data.keyword.registryshort_notm}}, the user name is set to the value `iamapikey`.
`--docker-password <token_value>`	Required. Enter the value of your API Key that you previously retrieved.
`--docker-email <docker-email>`	Required. If you have one, enter your Docker email address. If you do not, enter a fictional email address, such as `a@b.c`. This email is required to create a Kubernetes secret, but is not used after creation.

Verify that the secret was created successfully. Replace <kubernetes_namespace> with the namespace where you created the image pull secret.
```
kubectl get secrets --namespace <kubernetes_namespace>
```
{: pre}
Add the image pull secret to a Kubernetes service account so that any pod in the namespace can use the image pull secret when you deploy a container.

Accessing images that are stored in other private registries

{: #private_images}

If you already have a private registry, you must store the registry credentials in a Kubernetes image pull secret and reference this secret from your configuration file. {:shortdesc}

Before you begin:

Create a cluster.
Target your CLI to your cluster.

To create an image pull secret:

Create the Kubernetes secret to store your private registry credentials.

kubectl --namespace <kubernetes_namespace> create secret docker-registry <secret_name>  --docker-server=<registry_URL> --docker-username=<docker_username> --docker-password=<docker_password> --docker-email=<docker_email>

{: pre}

Understanding this command's components

Understanding this command's components
`--namespace <kubernetes_namespace>`	Required. The Kubernetes namespace of your cluster where you want to use the secret and deploy containers to. Run `kubectl get namespaces` to list all namespaces in your cluster.
`<secret_name>`	Required. The name that you want to use for your `imagePullSecret`.
`--docker-server <registry_URL>`	Required. The URL to the registry where your private images are stored.
`--docker-username <docker_username>`	Required. The user name to log in to your private registry.
`--docker-password <token_value>`	Required. The value of your registry token that you retrieved earlier.
`--docker-email <docker-email>`	Required. If you have one, enter your Docker email address. If you do not have one, enter a fictional email address, such as `a@b.c`. This email is required to create a Kubernetes secret, but is not used after creation.

Verify that the secret was created successfully. Replace <kubernetes_namespace> with the name of the namespace where you created the imagePullSecret.
```
kubectl get secrets --namespace <kubernetes_namespace>
```
{: pre}
Create a pod that references the image pull secret.

Using the image pull secret to deploy containers

{: #use_imagePullSecret}

You can define an image pull secret in your pod deployment or store the image pull secret in your Kubernetes service account so that it is available for all deployments that do not specify a service account. {: shortdesc}

Choose between the following options:

Referring to the image pull secret in your pod deployment: Use this option if you do not want to grant access to your registry for all pods in your namespace by default.
Storing the image pull secret in the Kubernetes service account: Use this option to grant access to images in your registry for all deployments in the selected Kubernetes namespaces.

Before you begin:

Create an image pull secret to access images in other registries or Kubernetes namespaces other than default.
Target your CLI to your cluster.

Referring to the image pull secret in your pod deployment

{: #pod_imagePullSecret}

When you refer to the image pull secret in a pod deployment, the image pull secret is valid for this pod only and cannot be shared across pods in the namespace. {:shortdesc}

Create a pod configuration file that is named mypod.yaml.

Define the pod and the image pull secret to access images in {{site.data.keyword.registrylong_notm}}.

To access a private image:

apiVersion: v1
kind: Pod
metadata:
  name: mypod
spec:
  containers:
    - name: <container_name>
      image: <region>.icr.io/<namespace_name>/<image_name>:<tag>
  imagePullSecrets:
    - name: <secret_name>

{: codeblock}

To access an {{site.data.keyword.cloud_notm}} public image:

apiVersion: v1
kind: Pod
metadata:
  name: mypod
spec:
  containers:
    - name: <container_name>
      image: icr.io/<image_name>:<tag>
  imagePullSecrets:
    - name: <secret_name>

{: codeblock}

Understanding the YAML file components

Understanding the YAML file components
`<container_name>`	The name of the container to deploy to your cluster.
`<namespace_name>`	The namespace where the image is stored. To list available namespaces, run `ibmcloud cr namespace-list`.
`<image_name>`	The name of the image to use. To list available images in an {{site.data.keyword.cloud_notm}} account, run `ibmcloud cr image-list`.
`<tag>`	The version of the image that you want to use. If no tag is specified, the image that is tagged latest is used by default.
`<secret_name>`	The name of the image pull secret that you created earlier.

Save your changes.
Create the deployment in your cluster.
```
kubectl apply -f mypod.yaml
```
{: pre}

Storing the image pull secret in the Kubernetes service account for the selected namespace

{:#store_imagePullSecret}

Every namespace has a Kubernetes service account that is named default. You can add the image pull secret to this service account to grant access to images in your registry. Deployments that do not specify a service account automatically use the default service account for this namespace. {:shortdesc}

Check if an image pull secret already exists for your default service account.
```
kubectl describe serviceaccount default -n <namespace_name>
```
{: pre} When <none> is displayed in the Image pull secrets entry, no image pull secret exists.

Add the image pull secret to your default service account.

To add the image pull secret when no image pull secret is defined:

kubectl patch -n <namespace_name> serviceaccount/default -p '{"imagePullSecrets":[{"name": "<image_pull_secret_name>"}]}'

{: pre}

To add the image pull secret when an image pull secret is already defined:

kubectl patch -n <namespace_name> serviceaccount/default --type='json' -p='[{"op":"add","path":"/imagePullSecrets/-","value":{"name":"<image_pull_secret_name>"}}]'

{: pre}

Verify that your image pull secret was added to your default service account.

kubectl describe serviceaccount default -n <namespace_name>

{: pre}

Example output:

Name:                default
Namespace:           <namespace_name>
Labels:              <none>
Annotations:         <none>
Image pull secrets:  <image_pull_secret_name>
Mountable secrets:   default-token-sh2dx
Tokens:              default-token-sh2dx
Events:              <none>

{: pre}

Deploy a container from an image in your registry.

apiVersion: v1
kind: Pod
metadata:
  name: mypod
spec:
  containers:
    - name: <container_name>
      image: <region>.icr.io/<namespace_name>/<image_name>:<tag>

{: codeblock}

Create the deployment in the cluster.
```
kubectl apply -f mypod.yaml
```
{: pre}

Setting up a cluster to pull entitled software

{: #secret_entitled_software}

You can set up your {{site.data.keyword.containerlong_notm}} cluster to pull entitled software, which is a collection of protected container images that are packaged in Helm charts that you are licensed to use by IBM. Entitled software is stored in a special {{site.data.keyword.registrylong_notm}} cp.icr.io domain. To access this domain, you must create an image pull secret with an entitlement key for your cluster and add this image pull secret to the Kubernetes service account of each namespace where you want to deploy this entitled software. {: shortdesc}

Do you have older entitled software from Passport Advantage? Use the PPA importer tool instead to deploy this software in your cluster. {: tip}

Before you begin: Log in to your account. If applicable, target the appropriate resource group. Set the context for your cluster.

Get the entitlement key for your entitled software library.
1. Log in to MyIBM.com and scroll to the Container software library section. Click View library.
2. From the Access your container software > Entitlement keys page, click Copy key. This key authorizes access to all the entitled software in your container software library.
In the namespace that you want to deploy your entitled containers, create an image pull secret so that you can access the cp.icr.io entitled registry. For more information, see Accessing images that are stored in other private registries.
```
kubectl create secret docker-registry entitled-cp-icr-io --docker-server=cp.icr.io --docker-username=cp --docker-password=<entitlement_key> --docker-email=<docker_email> -n <namespace>
```
{: pre}
Add the image to the service account of the namespace so that any container in the namespace can use the entitlement key to pull entitled images. For more information, see Using the image pull secret to deploy containers.
```
kubectl patch -n <namespace> serviceaccount/default --type='json' p='[{"op":"add","path":"/imagePullSecrets/","value":{"name":"entitled-cp-icr-io"}}]'
```
{: pre}
Create a pod in the namespace that builds a container from an image in the entitled registry.
```
kubectl run <pod_name> --image=cp.icr.io/<image_name> -n <namespace>
```
{: pre}
Check that your container was able to successfully build from the entitled image by verifying that the pod is in a Running status.
```
kubectl get pod <pod_name> -n <namespace>
```
{: pre}

Wondering what to do next? You can set up the ibm-marketplace Helm chart repository, where Helm charts that incorporate entitled software are stored. If you already have Helm installed in your cluster, run helm repo add ibm-marketplace https://raw.githubusercontent.com/IBM/charts/master/repo/entitled. {: tip}

Deprecated: Using a registry token to deploy containers from an {{site.data.keyword.registrylong_notm}} image

{: #namespace_token}

You can deploy containers to your cluster from an IBM-provided public image or a private image that is stored in your namespace in {{site.data.keyword.registryshort_notm}}. Existing clusters use a registry token that is stored in a cluster imagePullSecret to authorize access to pull images from the registry.bluemix.net domain names. {:shortdesc}

For clusters that were created before 1 July 2019, non-expiring registry tokens and secrets were automatically created for both the nearest regional registry and the global registry. The global registry securely stores public, IBM-provided images that you can refer to across your deployments instead of having different references for images that are stored in each regional registry. The regional registry securely stores your own private Docker images. The tokens are used to authorize read-only access to any of your namespaces that you set up in {{site.data.keyword.registryshort_notm}} so that you can work with these public (global registry) and private (regional registry) images.

Each token must be stored in a Kubernetes imagePullSecret so that it is accessible to a Kubernetes cluster when you deploy a containerized app. When your cluster is created, {{site.data.keyword.containerlong_notm}} automatically stores the tokens for the global (IBM-provided public images) and regional registries in Kubernetes image pull secrets. The image pull secrets are added to the default Kubernetes namespace, the kube-system namespace, and the list of secrets in the default service account for those namespaces.

This method of using a token to authorize cluster access to {{site.data.keyword.registrylong_notm}} for the registry.bluemix.net domain names is deprecated. Before tokens become unsupported, update your deployments to use the API key method to authorize cluster access to the new icr.io registry domain names. {: deprecated}

Depending on where the image is and where the container is, you must deploy containers by following different steps.

Deploy a container to the default Kubernetes namespace with an image that is in the same region as your cluster
Deploy a container to a different Kubernetes namespace than default
Deploy a container with an image that is in a different region or {{site.data.keyword.cloud_notm}} account than your cluster
Deploy a container with an image that is from a private, non-IBM registry

By using this initial setup, you can deploy containers from any image that is available in a namespace in your {{site.data.keyword.cloud_notm}} account into the default namespace of your cluster. To deploy a container into other namespaces of your cluster, or to use an image that is stored in another {{site.data.keyword.cloud_notm}} region or in another {{site.data.keyword.cloud_notm}} account, you must create your own image pull secret for your cluster. {: note}

Deprecated: Deploying images to the `default` Kubernetes namespace with a registry token

{: #token_default_namespace}

With the registry token that is stored in the image pull secret, you can deploy a container from any image that is available in your regional {{site.data.keyword.registrylong_notm}} into the default namespace of your cluster. {: shortdesc}

Before you begin:

Set up a namespace in {{site.data.keyword.registryshort_notm}} and push images to this namespace.
Create a cluster.
Target your CLI to your cluster.

To deploy a container into the default namespace of your cluster, create a configuration file.

Create a deployment configuration file that is named mydeployment.yaml.

Define the deployment and the image that you want to use from your namespace in {{site.data.keyword.registryshort_notm}}.

To use a private image from a namespace in {{site.data.keyword.registryshort_notm}}:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: <app_name>-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: <app_name>
  template:
    metadata:
      labels:
        app: <app_name>
    spec:
      containers:
      - name: <app_name>
        image: registry.<region>.bluemix.net/<namespace>/<my_image>:<tag>

{: codeblock}

Tip: To retrieve your namespace information, run ibmcloud cr namespace-list.

Create the deployment in your cluster.
```
kubectl apply -f mydeployment.yaml
```
{: pre}

Tip: You can also deploy an existing configuration file, such as one of the IBM-provided public images. This example uses the ibmliberty image in the US-South region.
```
kubectl apply -f https://raw.githubusercontent.com/IBM-Cloud/kube-samples/master/deploy-apps-clusters/deploy-ibmliberty.yaml
```
{: pre}

Deprecated: Copying the token-based image pull secret from the default namespace to other namespaces in your cluster

{: #token_copy_imagePullSecret}

You can copy the image pull secret with registry token credentials that is automatically created for the default Kubernetes namespace to other namespaces in your cluster. {: shortdesc}

List available namespaces in your cluster.

kubectl get namespaces

{: pre}

Example output:

default          Active    79d
ibm-cert-store   Active    79d
ibm-system       Active    79d
istio-system     Active    34d
kube-public      Active    79d
kube-system      Active    79d

{: screen}

Optional: Create a namespace in your cluster.
```
kubectl create namespace <namespace_name>
```
{: pre}

Copy the image pull secrets from the default namespace to the namespace of your choice. The new image pull secrets are named bluemix-<namespace_name>-secret-regional and bluemix-<namespace_name>-secret-international.

kubectl get secret bluemix-default-secret-regional -o yaml | sed 's/default/<namespace_name>/g' | kubectl -n <namespace_name> create -f -

{: pre}

kubectl get secret bluemix-default-secret-international -o yaml | sed 's/default/<namespace_name>/g' | kubectl -n <namespace_name> create -f -

{: pre}

Verify that the secrets are created successfully.
```
kubectl get secrets --namespace <namespace_name>
```
{: pre}
Deploy a container by using the imagePullSecret in your namespace.

Deprecated: Accessing token-authorized images in other {{site.data.keyword.cloud_notm}} regions and accounts

{: #token_other_regions_accounts}

To access images in other {{site.data.keyword.cloud_notm}} regions or accounts, you must create a registry token and save your credentials in an image pull secret. {: shortdesc}

Tokens that authorize access to registry.<region>.bluemix.net domains are deprecated. You can no longer create new tokens. Instead, create cluster image pull secrets that use API key credentials to pull images from the icr.io registry domains. {: deprecated}

List tokens in your {{site.data.keyword.cloud_notm}} account.
```
ibmcloud cr token-list
```
{: pre}
Note the token ID that you want to use.
Retrieve the value for your token. Replace <token_ID> with the ID of the token that you retrieved in the previous step.
```
ibmcloud cr token-get <token_id>
```
{: pre}

Your token value is displayed in the Token field of your CLI output.

Create the Kubernetes secret to store your token information.

kubectl --namespace <kubernetes_namespace> create secret docker-registry <secret_name>  --docker-server=<registry_URL> --docker-username=token --docker-password=<token_value> --docker-email=<docker_email>

{: pre}

Understanding this command's components

Understanding this command's components
`--namespace <kubernetes_namespace>`	Required. The Kubernetes namespace of your cluster where you want to use the secret and deploy containers to. Run `kubectl get namespaces` to list all namespaces in your cluster.
`<secret_name>`	Required. The name that you want to use for your image pull secret.
`--docker-server <registry_URL>`	Required. The URL to the image registry where your namespace is set up. For namespaces that are set up in US-South and US-East `registry.ng.bluemix.net` For namespaces that are set up in UK-South `registry.eu-gb.bluemix.net` For namespaces that are set up in EU-Central (Frankfurt) `registry.eu-de.bluemix.net` For namespaces that are set up in Australia (Sydney) `registry.au-syd.bluemix.net`
`--docker-username <docker_username>`	Required. The user name to log in to your private registry. For {{site.data.keyword.registryshort_notm}}, the user name is set to the value `token`.
`--docker-password <token_value>`	Required. The value of your registry token that you retrieved earlier.
`--docker-email <docker-email>`	Required. If you have one, enter your Docker email address. If you do not, enter a fictional email address, as for example a@b.c. This email is mandatory to create a Kubernetes secret, but is not used after creation.

Verify that the secret was created successfully. Replace <kubernetes_namespace> with the namespace where you created the image pull secret.
```
kubectl get secrets --namespace <kubernetes_namespace>
```
{: pre}
Deploy a container by using the image pull secret in your namespace.

Provide feedback

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cs_images.md

cs_images.md

Building containers from images

Planning image registries

Setting up trusted content for container images

Deploying containers from an {{site.data.keyword.registryshort_notm}} image to the `default` Kubernetes namespace

Understanding how to authorize your cluster to pull images from a registry

Updating existing clusters to use the API key image pull secret

Using an image pull secret to access other cluster Kubernetes namespaces, other {{site.data.keyword.cloud_notm}} accounts, or external private registries

Copying an existing image pull secret

Creating an image pull secret with different IAM API key credentials for more control or access to images in other {{site.data.keyword.cloud_notm}} accounts

Accessing images that are stored in other private registries

Using the image pull secret to deploy containers

Referring to the image pull secret in your pod deployment

Storing the image pull secret in the Kubernetes service account for the selected namespace

Setting up a cluster to pull entitled software

Deprecated: Using a registry token to deploy containers from an {{site.data.keyword.registrylong_notm}} image

Deprecated: Deploying images to the `default` Kubernetes namespace with a registry token

Deprecated: Copying the token-based image pull secret from the default namespace to other namespaces in your cluster

Deprecated: Accessing token-authorized images in other {{site.data.keyword.cloud_notm}} regions and accounts

Files

cs_images.md

Latest commit

History

cs_images.md

File metadata and controls

Building containers from images

Planning image registries

Setting up trusted content for container images

Deploying containers from an {{site.data.keyword.registryshort_notm}} image to the default Kubernetes namespace

Understanding how to authorize your cluster to pull images from a registry

Updating existing clusters to use the API key image pull secret

Using an image pull secret to access other cluster Kubernetes namespaces, other {{site.data.keyword.cloud_notm}} accounts, or external private registries

Copying an existing image pull secret

Creating an image pull secret with different IAM API key credentials for more control or access to images in other {{site.data.keyword.cloud_notm}} accounts

Accessing images that are stored in other private registries

Using the image pull secret to deploy containers

Referring to the image pull secret in your pod deployment

Storing the image pull secret in the Kubernetes service account for the selected namespace

Setting up a cluster to pull entitled software

Deprecated: Using a registry token to deploy containers from an {{site.data.keyword.registrylong_notm}} image

Deprecated: Deploying images to the default Kubernetes namespace with a registry token

Deprecated: Copying the token-based image pull secret from the default namespace to other namespaces in your cluster

Deprecated: Accessing token-authorized images in other {{site.data.keyword.cloud_notm}} regions and accounts

Deploying containers from an {{site.data.keyword.registryshort_notm}} image to the `default` Kubernetes namespace

Deprecated: Deploying images to the `default` Kubernetes namespace with a registry token