Deploy Cloud Services

KubeVela efficiently and securely integrates different types of cloud resources in hybrid/multi-cloud environments.

You can use the integrated cloud resources as out-of-box components or integrate by Terraform or Crossplane easily. With the help of KubeVela, you can use cloud resources from various providers in a unified way.

This tutorial will mainly focus on talking about how to provision cloud resources by Terraform. If you'd like to know more about cloud resources from Crossplane, please refer to this guide.

Provision Cloud Resources

Prerequisites

• Enable Terraform addon and authenticate the target cloud provider per the instruction.

Let's take Alibaba Cloud as an example.

Familiar with cloud resources specification

All supported Terraform cloud resources can be seen in the list. You can also filter them by command vela components --label type=terraform.

You can use any of the following ways to check the specification of one cloud resource.

• Using command vela show <component type name> .

$ vela show alibaba-oss
### Properties
+----------------------------+-------------------------------------------------------------------------+-----------------------------------------------------------+----------+---------+
|            NAME            |                               DESCRIPTION                               |                           TYPE                            | REQUIRED | DEFAULT |
+----------------------------+-------------------------------------------------------------------------+-----------------------------------------------------------+----------+---------+
| acl                        | OSS bucket ACL, supported 'private', 'public-read', 'public-read-write' | string                                                    | false    |         |
| bucket                     | OSS bucket name                                                         | string                                                    | false    |         |
| writeConnectionSecretToRef | The secret which the cloud resource connection will be written to       | [writeConnectionSecretToRef](#writeConnectionSecretToRef) | false    |         |
+----------------------------+-------------------------------------------------------------------------+-----------------------------------------------------------+----------+---------+

...snip...

You can also add flag --web to view the usage by a local browser.

• Reading official docs.

For example, you can check the specification for Alibaba OSS at here.

For different vendors, these parameters update accordingly. All cloud resources have the following common parameters.

• writeConnectionSecretToRef: struct Type, represents the outputs of Terraform will become key/values in the secret with the name specified here.
  • name, specifies the name of the secret.
  • namespace, specifies the namespace of the secret.
• providerRef: struct Type, represents the Provider which is referenced by a cloud service.
  • name, specifies the name of the provider.
• deleteResource: bool Type, specify whether to delete the corresponding cloud service when the app is deleted. By Default it's true.
• customRegion: string Type, specify region for resources, it will override the default region from providerRef.

Provision by Creating Application

First, Prepare a available cloud provider. Let's list the exist configs, If exist you could ignore this step.

vela config list -t terraform-alibaba

If not exist, you can refer to this command to create a default provider:

vela config create default -t terraform-alibaba ALICLOUD_REGION=<Region> ALICLOUD_SECRET_KEY=<Secret> ALICLOUD_ACCESS_KEY=<AccessKey>

Use the following Application to provision an OSS bucket:

apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
  name: provision-cloud-resource-sample
spec:
  components:
    - name: sample-oss
      type: alibaba-oss
      properties:
        bucket: vela-website-0911
        acl: private
        writeConnectionSecretToRef:
          name: oss-conn

The above alibaba-oss component will create an OSS bucket named vela-website-0911, with private acl, with connection information stored in a secreted named oss-conn.

Apply the above application, then check the status:

$ vela ls
APP                             COMPONENT   TYPE        TRAITS  PHASE   HEALTHY STATUS                                          CREATED-TIME
provision-cloud-resource-sample sample-oss  alibaba-oss         running healthy Cloud resources are deployed and ready to use   2021-09-11 12:55:57 +0800 CST

After the phase becomes running and healthy, you can then check the OSS bucket in Alibaba Cloud console.

Provision with UI Console

Provision cloud resources from UI Console can be more appropriate.

Before starting

• Enable VelaUX addon.

• Enable Terraform addon, just like the prerequisites in CLI part above. VelaUX can also enable these addons in UI console.

• Bind the cloud provider to the target. You can do that in Resources/Targets page. Edit the Shared Variables, select provider you want to bind to this target.

Creating your cloud service

The UI console operations are the same, you can refer to this guide.

Firstly, Create an application and choose the type of your cloud service, they will always has a prefix of vendor such as aws-, azure or alibaba-.

Set the above parameters according to your needs to complete creating the application, and then deploy the application. The resources will be provisioned after the application become ready.

Viewing cloud resource creation status

• Check the cloud instance list

Like other apps, cloud service apps also need to switch to the corresponding environment page to view instance information. By default, there are several targets in an environment, and the cloud service will generate a corresponding number of instances.

In the instance list, the instance name, status, resource type, and location are displayed. In the beginning, the name is empty, because the cloud service instance generation takes a certain amount of time, and the name will appear when the instance is generated normally.

• View the cloud resource in the console of the cloud provider

You can visit the instance in the console of the cloud provider. For example, you can check the name or console to visit it.

It will redirect to the UI Console of the provider, in our example, resources from Alibaba Cloud will go to https://console.aliyun.com.

• Check details and status of the cloud instance

Click the Check the detail button to view the application details.

You will find that each instance generates a Secret resource, which generally records the service's access address and key information. Secret resources will be distributed to the cluster and Namespace where the target is located while the control cluster exists. Therefore, other applications in the same environment can directly use the resource in the environment variable to obtain the access address and key.

In the last section Component Status, the health status and the message of the cloud service instance is displayed.

FAQ

• The cloud service is always ProvisioningAndChecking and has no name

The creation of cloud services generally takes a certain amount of time. Please wait or enter the cloud vendor console to view the creation progress.

More

For more usages of cloud resources, like how to provision and consume cloud resources, please refer to Scenarios of Cloud Resources Management.