You can create VCIs by specifying VCI specifications. This topic mainly describes how to specify VCI specifications to create general-purpose instances.

Limits

The supported regions and availability zones vary based on different general-purpose instance families. For details, see Regions and availability zones.

After you specify VCI specifications, if you do not specify container specifications (spec.resource), a pod is created based on the specified specifications. If you specify both VCI and container specifications, the Pod specification is calculated as described in Instance specification normalization.

Prerequisites

A cluster for VCI applications has been created. For details, see Using VCI in VPC-CNI clusters and Using VCI in Flannel clusters.

A VPC and its subnet have been created. For details, see Creating VPCs.

Creating instances by using Kubernetes

When you create a pod or a workload, including a Deployment, StatefulSet, Job, and CronJob, specify VCI specifications by adding an annotation.

The following table describes the annotation.

Annotation key	Annotation sample value	Description	Required
vci.vke.volcengine.com/preferred-instance-types	vci.u1.4c-8gi	The instance specifications of the general-purpose type. The instance specifications include the quantity of CPUs and memory. You can specify the vCPU and memory quantity for each container by defining the request and limit for the container. For detailed specifications, see General-purpose. tip For the value description of the annotation used to create a GPU-accelerated instance, see Creating GPU-accelerated instances based on the specified VCI specification. Billing is performed based on the specified instance specification. For billing descriptions, see Product billing. You can specify multiple specifications (annotation values). Separate multiple specifications with commas (,), and determine the priority by the order in which they are entered. If the higher-priority specification has no available resources, the lower-priority specification will be used to create instances.	Required for this scenario

The following sample code shows how to create a Deployment.

Creating instances by using the console

Specify the following parameters when you create a workload in a VCI cluster.

Basic information: Select Volcengine Container Instance for the Computing power type parameter.

Container configuration: Specify the requests and limits of CPU and memory in the ResourceQuota section based on your business requirements.

Advanced configurations: Configure the instance specifications in the VCI specification settings section. You can use the default instance family or specify a custom instance family.

When specifying instance families, you can select multiple families under the same instance type. Their priority is determined by the order in which they are selected. For details, see Specific specifications. If resources are unavailable in a higher-priority family, VCI uses a lower-priority family to create the instance.

Volcengine Kubernetes Engine