title:"Accessing Docker registry from Kubernetes cluster"

description:"Allow Kubernetes to pull Docker images from your registry"

group:ci-cd-guides

toc:true

Kubernetes deployments are based on a "pull" approach. When you deploy your application to a Kubernetes

cluster, instead of uploading the application itself, as in traditional deployments, Kubernetes pulls the Docker images to its nodes on its own.

{% include

image.html

lightbox="true"

file="/images/getting-started/quick-start-k8s/overview.png"

url="/images/getting-started/quick-start-k8s/overview.png"

alt="Kubernetes deployments"

caption="Kubernetes deployments"

max-width="80%"

%}

If your Docker images are in a public repository such as Docker Hub, Kubernetes can pull them right away. In most cases however your images are in a private Docker registry and Kubernetes must be given explicit access to it.

Use[Docker registry secrets](https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/){:target="\_blank"} to give Kubernetes access to private Docker registries. When there is a deployment, each Kubernetes pod can pull Docker images directly from the target registry.

Codefresh allows you to easily create and pull secrets for your cluster.

1. In the Codefresh UI, set up an integration with your[Docker registry in Codefresh]({{site.baseurl}}/docs/integrations/docker-registries/).

Codefresh can work with any compliant Docker registry either in the cloud or behind the firewall.

1. To view the Kubernetes dashboard, from the Ops section in the sidebar, select[**Kubernetes Services**](https://g.codefresh.io/kubernetes/services/){:target="\_blank"}.

1. Click**Add Service**.

1. Do the following:

* Select your**Cluster** and**Namespace** from the respective lists.

* From the**Image Pull Secret** dropdown with all the pull secrets for the selected namespace, select**Create Registry Pull secret**.

* From the list of all the connected Docker registries in Codefresh, select the registry you want.

Codefresh automatically creates a secret for you.

{% include

image.html

lightbox="true"

file="/images/guides/kubernetes/create-secret.png"

url="/images/guides/kubernetes/create-secret.png"

alt="Create Pull Secret"

caption="Create Pull Secret"

max-width="80%"

%}

{% include

image.html

lightbox="true"

file="/images/guides/kubernetes/secret-dropdown.png"

url="/images/guides/kubernetes/secret-dropdown.png"

alt="Docker Registry Access"

caption="Docker Registry Access"

max-width="80%"

%}

From now on, the cluster in this namespace can deploy Docker images from the selected registry.

To apply the changed secret, you don't really need to finish the deployment. Feel free to

close the screen and go to another Codefresh page.

If you wish to use your own manifests, you need to include the secret yourself, as explained in the next section.

You can also use the`kubectl` command directly to give access to a Docker registry.

As this method is not specific to Codefresh, read the[official kubernetes documentation](https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/){:target="\_blank"}.

The credentials depend upon the[type of registry]({{site.baseurl}}/docs/integrations/docker-registries/) you use.

- The Docker server to use is a domain such`gcr.io`,`azurecr.io`

- The username is your account username.

- The password is a specific Docker registry password or any other kind of token. You need to check the documentation of your registry provider for the exact details.

Pull secrets are specific to a namespace. If you want to deploy to multiple namespaces, you need to create a secret for each one of them.

This is an example of creating a pull secret to the Azure registry. You can use the same command for any other private registry.

{% highlight sh %}

{% raw %}

export DOCKER_REGISTRY_SERVER=mysampleregistry.azurecr.io

export DOCKER_USER=myregistryname

export DOCKER_PASSWORD=myregistrytoken

export DOCKER_EMAIL=YOUR_EMAIL

kubectl create secret docker-registry cfcr\

--docker-server=$DOCKER_REGISTRY_SERVER\

--docker-username=$DOCKER_USER\

--docker-password=$DOCKER_PASSWORD\

--docker-email=$DOCKER_EMAIL

{% endraw %}

{% endhighlight %}

To use the secret you just created, you need to include it, either in:

* Your[pod manifests](https://kubernetes.io/docs/concepts/containers/#specifying-imagepullsecrets-on-a-pod){:target="\_blank"}

* The[service account](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/#add-imagepullsecrets-to-a-service-account){:target="\_blank"}

For Docker registry secret usage, we recommend following the official Kubernetes documentation.

The Codefresh CLI can also create pull secrets in an automated manner.

See[Image pull Secret](https://codefresh-io.github.io/cli/more/image-pull-secret/){:target="\_blank"}.

[Deploy to Kubernetes - quick start]({{site.baseurl}}/docs/getting-started/deployment-to-kubernetes-quick-start-guide/)

[Managing your cluster]({{site.baseurl}}/docs/deployments/kubernetes/manage-kubernetes/)

title:"Adding config maps to namespaces"

description:"Manage Kubernetes Config Maps with Codefresh"

group:ci-cd-guides

toc:true

Many applications require configuration with files, environment variables, and command line arguments. It makes applications portable and easily manageable. While this makes for easy configuration, it can become very hard to support tons of config files for different environments and hundreds of microservices.

Kubernetes provides an elegant and very convenient way for application configuration, using*configuration maps*. You can find more details about config maps at[https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/](https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/){:target="_blank"}.

You can manage all your cluster configuration using Codefresh.

1. In the Codefresh UI, from the Ops section in the sidebar, select[**Kubernetes Services**](https://g.codefresh.io/kubernetes/services/){:target="\_blank"}.

1. Switch to list view.

{% include

image.html

lightbox="true"

file="/images/guides/config-maps/change-view.png"

url="/images/guides/config-maps/change-view.png"

alt="Change View"

caption="Change View"

max-width="50%"

%}

{:start="3"}

1. Select a namespace and hover over it.

1. Click the**Settings** icon which appears at the end of the row.

A list of all config maps within this namespace are displayed, including date of creation and number of configuration variables inside these maps.

1. From the list of config maps, click**Create a New Config Map**.

{% include image.html

lightbox="true"

file="/images/guides/config-maps/manage-maps-namespace.png"

url="/images/guides/config-maps/manage-maps-namespace.png"

alt="Create a new config map in namespace"

caption="Create a new config map in namespace"

max-width="40%"

%}

{:start="2"}

1. In the Add a New Config Map form, enter a**Name**, add variables, as described in[Managing variables in your config maps](#managing-variables-in-config-maps), and then click**Create**.

{% include image.html

lightbox="true"

file="/images/guides/config-maps/new-config-map-settings.png"

url="/images/guides/config-maps/new-config-map-settings.png"

alt="Define settings for new config map"

caption="Define settings for new config map"

max-width="40%"

%}

There are three options to add variables to config maps:

1. Add a single variable at a time

1. Add multiple variables by copying and pasting from text or file

1. Import a set of variables from an existing config map

This is the easiest way to add a variable to the config map. This method is very useful to quickly create a small configmap with 1-2 variables:

1. Enter Key name and the Key value

1. Click**Add Variable**.

{% include image.html

lightbox="true"

file="/images/guides/config-maps/add-new-single-variable.png"

url="/images/guides/config-maps/add-new-single-variable.png"

alt="Add single variable at a time to config map"

caption="Add single variable at a time to config map"

max-width="40%"

%}

If you already have configuration variables in a`*.property` file, you can easily import it to your configmap.

**Import from text**:

1. Click**Import from text**.

1. Copy text from file and paste it within the text area in the required format.

1. Click**Apply**.

{% include image.html

lightbox="true"

file="/images/guides/config-maps/import-variables-from-text.png"

url="/images/guides/config-maps/import-variables-from-text.png."

alt="Add multiple variables from text or file to config map"

caption="Add multiple variables from text or file to config map"

max-width="40%"

%}

**Import from file**:

1. Click**Import from file**.

1. Select the file from your computer, and click**Open**.

You can easily copy the variables from an existing config map file, and use it in other namespaces.

1. Click**Copy from Existing Config Map**.

1. Select the**Cluster** and**Namespace** from which to copy the configmap.

1. Select the configmap from the list, and click**Select**.

{% include image.html

lightbox="true"

file="/images/guides/config-maps/select-cluster-namespace.png"

url="/images/guides/config-maps/select-cluster-namespace.png"

alt="Copy variables from existing config map"

caption="Copy variables from existing config map"

max-width="40%"

%}

You can easily edit or remove variables in your config maps.

1. Select the config map with the variables to modify or remove.

1. Click the**Edit** (pencil) icon.

1. Add new variables, as described in[Managing variables in your config maps](#managing-variables-in-config-maps).

{% include image.html

lightbox="true"

file="/images/guides/config-maps/edit-remove-config-map-variables.png"

url="/images/guides/config-maps/edit-remove-config-map-variables.png"

alt="Edit/remove variables in config maps"

caption="Edit/remove variables in config maps"

max-width="40%"

%}

To remove a config map, click on "remove" icon in the selected row. After your confirmation, the configmap will be removed.

[Connect to your Kubernetes cluster]({{site.baseurl}}/docs/integrations/add-kubernetes-cluster/)

[Manage your Kubernetes cluster]({{site.baseurl}}/docs/deployments/kubernetes/manage-kubernetes/)

[Deploy to Kubernetes - quick start]({{site.baseurl}}/docs/getting-started/deployment-to-kubernetes-quick-start-guide/)