Connect Image Registry

In this guide, we will introduce how to create a private image registry and how to create an application whose image locates in the registry.

Check the config template is exist with the following command:

vela config-template list | grep image-registry

There are two ways to create the config. On the Configs page, you could create the configs that belong to the system scope. Then, the Image registry could be used for all projects. If you only want to use it for one project, let’s create the config on the Project summary page.

On the Configs/ImageRegistry page, let’s create a private image registry with the following fields:

Registry

Your image registry domain, such as index.docker.io. Please make sure this domain could be accessed from all cluster nodes.

Insecure

If your registry server uses the self-signed certificate, you should enable this field. This only means KubeVela could trust your registry. You also need to make sure the dockerd or containerd in your cluster node trust this registry. refer to: Test an insecure registry with docker.

UseHTTP

If your registry with the HTTP protocol to provide the service, you should enable this field. You also need to make sure the dockerd or containerd in your cluster node trust this registry. refer to: Test an insecure registry with docker.

Auth

If your registry needs authentication, you need must set the username and password. KubeVela will generate the secret and distribute it to all clusters.

Also, we could create the image registry config via CLI:

vela config create <Config Name> -t image-registry registry=<Registry Domain>

List all Image registries:

vela config list -t image-registry

After creating a config, it only saves as a Secret in the system namespace in the hub cluster. But the application will generate the Workload resource that depends on this Secret which type is kubernetes.io/dockerconfigjson. So, we should distribute the Secret to all namespaces that we could use and include managed clusters. The config distribution could help you.

Let’s go to the project summary page for which you want to create the Application.

Click the Distribute button and select the targets that you want to distribute the config.

Also, you could distribute the config via CLI:

vela config distribute <Config Name> --target <cluster/namespace>

Let’s follow the Deploy Container Image to create an application. After you input the image name, KubeVela will automatically identify the matched registries.

Last updated on May 6, 2023 by Tianxin Dong