Overview

Introduction

When you use Elastic Container Instance, you are charged for the following resources:

• Elastic container instances: You are charged for compute resources on a pay-as-you-go basis. The following billing modes are supported:

  • Billing based on vCPU and memory specifications

  • Billing based on Elastic Compute Service (ECS) instance types

• Image caches: You are charged for the creation and use of image caches.

• Other resources:

  • Network: If your elastic container instances require Internet access, you must configure elastic IP addresses (EIPs) or NAT gateways for the elastic container instances. You are charged for their corresponding network usage.

  • Storage: If your elastic container instances require persistent storage, you can attach disks, Apsara File Storage NAS file systems, and Object Storage Service (OSS) buckets as volumes to the elastic container instances. You are charged for the storage resources that you use.

Billing of elastic container instances

Elastic Container Instance is billed in 1-second increments for instances on a pay-as-you-go basis. This allows you to use resources first and pay for them afterward. Bills are generated for elastic container instances by hour. The billing duration of an elastic container instance begins when the container images are downloaded and ends when the instance stops running. While the container images are being downloaded, the instance is in the Pending state. When the instance stops running, it enters the Succeeded or Failed state.

If the available credit (the total value of your account balance and payment instruments such as vouchers) in your Alibaba Cloud account is less than the payable amount, your account is deemed to have an overdue payment. This may cause your elastic container instances to be released. When you use Elastic Container Instance, make sure that you have sufficient credit in your account so that your business is not affected by instance releases due to overdue payments.

One of the following billing modes applies based on how you create elastic container instances:

• Billing based on vCPU and memory specifications

  In this mode, you are charged for elastic container instances based on the vCPU and memory specifications that you specify when you create the elastic container instances. If the vCPU and memory specifications that you specify are not supported, the system adjusts the specifications and bills you based on the adjusted specifications. For more information, see Specify the number of vCPUs and memory size to create an elastic container instance.

  The fees of an elastic container instance are calculated based on the following formula: (Number of vCPUs × Unit price of vCPUs + Memory size × Unit price of memory) × Running duration of the elastic container instance.

  The following list provides the unit prices of vCPUs and memory in this mode. The actual information displayed on the instance buy page prevails.

  • Unit price of vCPUs: USD 0.0000077 per second

  • Unit price of memory (GiB): USD 0.00000096 per second

• Billing based on ECS instance types

  In this mode, you are charged for elastic container instances based on the ECS instance types that you specify when you create the elastic container instances. When you create elastic container instances, you can specify ECS instance families to provide the elastic container instances with required capabilities. For example, you can specify the ecs.sn1ne instance family to provide elastic container instances with enhanced network performance. For more information, see Specify an ECS instance type to create an elastic container instance.

  Note

  Elastic Container Instance supports GPUs. GPU-accelerated elastic container instances are billed based on the GPU-accelerated ECS instance types that you specify when you create the elastic container instances. For more information, see Create a GPU-accelerated elastic container instance.

  The fees of a GPU-accelerated elastic container instance are calculated based on the following formula: Unit price of ECS instance types × Running duration of the GPU-accelerated elastic container instance.

  In this mode, the price of each ECS instance type may differ from region to region. For more information, see the pricing tab on the Elastic Compute Service page.

We recommend that you create elastic container instances by specifying vCPU and memory specifications. The system tries instance types from multiple ECS instance families that have the specified vCPU and memory specifications to create elastic container instances. This ensures that sufficient resources are available to create the elastic container instances. For example, if you request to create an elastic container instance that has two vCPUs and 4 GiB of memory, the system tries multiple ECS instance types such as ecs.c6.large, ecs.c5.large, ecs.sn1ne.large, and ecs.sn1.large based on resource availability to create the elastic container instance.

For different business workloads, you can use a combination of savings plans, reserved instances, and preemptible instances to optimize your instance usage costs.

The following table describes the billing options.

Billing of image caches

Image caches can be used to accelerate image pulling and reduce the startup time of elastic container instances. For information about how to create and use an image cache, see Use an image cache to create an elastic container instance.

You are charged for the creation and use of image caches when you use the image cache feature. The following section describes some specific scenarios:

• Billing for the creation of image caches

  • Billing of intermediate elastic container instances and disks

    When you create an image cache, the system creates an intermediate performance level-1 (PL1) enhanced SSD (ESSD) and an intermediate elastic container instance that has two vCPUs and 4 GiB of memory. After the image cache is created, the instance and the ESSD are automatically released and no longer billed.

    The fees for the instance and the ESSD are calculated based on the following formula: (2 × Unit price of vCPUs + 4 × Unit price of memory + ESSD capacity × Unit price of ESSDs) × Running duration of the elastic container instance. The ESSD capacity is equal to the image cache size. The running duration of the instance increases with the image size.

  • Billing of snapshots

    The system creates a snapshot for an image cache based on the intermediate ESSD. You are charged for the snapshot based on its size and usage duration. By default, the pay-as-you-go billing method is used. You can use OSS storage plans in conjunction with storage capacity units (SCUs) to offset the snapshot bills. For more information, see Snapshots.

    The snapshot fees are calculated based on the following formula: Unit price of snapshots × Snapshot size × Usage duration of the snapshot. The snapshot size is equal to the image cache size. The usage duration is equal to the retention duration of the image cache.

  • Fees related to the instant access feature applicable to snapshots

    After the instant image cache feature is enabled, the system creates a temporary local snapshot in a quick manner by using the instant access feature. You are charged for the instant access feature based on the number of times that the feature is enabled and for the local snapshot based on its size and usage duration.

    The fees for the local snapshot are calculated based on the following formula: 1 × Price for enabling the instant access feature once + Unit price of instantly accessible snapshots × Size of the local snapshot × Usage duration of the local snapshot. The local snapshot size is equal to the specified image cache size. The usage duration of the local snapshot begins when the snapshot is created and ends when the snapshot is automatically deleted. This duration increases with the total image size.

    Note

    After the local snapshot is created, the system begins to create a normal snapshot. After the normal snapshot is created, the system deletes the local snapshot.

• Billing for the use of image caches

  If you use the image cache feature when you create an elastic container instance, the system attaches a PL1 ESSD to the elastic container instance. The ESSD is generated based on the snapshot of the image cache. The ESSD capacity is equal to the snapshot size. The ESSD is created and released together with the instance.

  If you use the image cache feature to create an elastic container instance, you are charged for the ESSD in addition to the elastic container instance itself.

  The fees for the ESSD are calculated based on the following formula: ESSD capacity × Unit price of ESSDs × Running duration of the elastic container instance.

Billing of other resources

You may need to use the network and storage services provided by Alibaba Cloud. The following tables describe billable resources of these services and their billing rules.

• Network services

  If your elastic container instances require Internet access, you must configure EIPs or NAT gateways for the instances. You are charged for the relevant resources.

  Billable resource	Description	References
  EIP	A public IP address that can be individually purchased and managed to enable Internet access for associated elastic container instances.	Billing overview
  NAT gateway	A gateway that can be individually purchased. After you associate an EIP with a NAT gateway, the EIP and NAT gateway can provide Internet access for all elastic container instances within the associated VPC.	Billing overview

• Storage services

  If your elastic container instances require persistent storage, you can attach disks, NAS file systems, and OSS buckets as volumes to your elastic container instances. You are charged for the storage resources that you use.

  Billable resource	Description	References
  Disk	A block device at the data block level. A disk is similar to a physical hardware device. You can partition and format a disk and create file systems for it.	Elastic Block Storage devices
  NAS file system	A scalable distributed file system that provides shared access.	Billing of General-purpose NAS file systems
  OSS bucket	A container that provides a large amount of storage space to store data such as images and videos on the Internet.	Overview