Quick reference

Limits

• For more information about considerations of ECS instances, see Usage notes.
• For more information about limits of ECS resources, see Limits and View quotas (old version).
• If you need to apply for ICP filings for websites deployed on your ECS instance, the instance must meet certain purchase requirements. You can apply for a limited number of ICP filing service numbers for websites that are deployed on each ECS instance. For more information, see Prepare and check the instance and access information. For information about how to apply for ICP filings, see ICP filing application overview.

Create and manage ECS instances

• You can perform the following steps to manage the lifecycle of an ECS instance:
  1. Create an instance by using the provided wizard
  2. Connect to an ECS instance
  3. Stop an instance
  4. Release an instance
• If the current instance type or network configuration is unsuitable for your business, you can change the instance type, IP address, and peak Internet bandwidth:
  • Subscription instances:
    • Upgrade configurations of subscription instances
    • Downgrade instance configurations during renewal
  • Pay-as-you-go instances:
    • Change the instance type of a pay-as-you-go instance
    • Change Internet bandwidth
  • IP addresses of ECS instances:
    • Change the public IP address of an ECS instance
    • Convert the public IP address of a VPC-type instance to an Elastic IP address
• If the current operating system is unsuitable for your business, you can change the operating system. For more information, see Change the operating system.
• You can use the following features to control and manage ECS instances in a fine-grained manner:
  • User data
  • Metadata
  • Instance identity
  • Instance RAM roles

Manage the billing method

• Subscription instances:

  You can use one of the following methods to renew subscription instances:

  • Manual renewal
  • Enable auto-renewal
  • Downgrade instance configurations during renewal
• Pay-as-you-go instances:

  You can enable the No Fees for Stopped Instances (VPC-Connected) feature for pay-as-you-go instances. For more information, see No Fees for Stopped Instances (VPC-Connected).

• Change the billing method of ECS instances:
  • Switch the billing method from pay-as-you-go to subscription
  • Switch the billing method from Subscription to Pay-As-You-Go

Improve cost-effectiveness

• You can purchase preemptible instances to reduce costs and achieve automatic scaling by combining with auto provisioning. For more information, see Create an auto provisioning group and Create a preemptible instance.
• You can purchase reserved instances to improve the flexibility of paying for instances and reduce costs. For more information, see Purchase reserved instances.

Create and manage cloud disks

Create and manage snapshots

The common application scenarios for snapshots are as follows:

• To copy or back up data: You can use a snapshot to create or roll back a cloud disk. For more information, see Create a disk from a snapshot and Roll back a disk.
• To ease environment deployment: You can use a system disk snapshot to create a custom image and use the custom image to create instances. For more information, see Create a custom image from a snapshot and Create an ECS instance by using a custom image.

Create and manage custom images

You can export custom images to back up environments. For more information, see Export custom images.

Create and manage security groups

You can perform the following steps to create and manage a security group.

1. Create a security group.
2. Add security group rules.
3. Add an ECS instances to a security group.
4. Delete a security group rule.
5. Delete security groups.

You can clone a security group across regions and network types to simplify business deployment. For more information, see Clone a security group.

If new security group rules disrupt your online business, you can perform a complete or partial restoration of the security group rules. For more information, see Restore security group rules.

Create and bind instance RAM roles

Create and manage SSH key pairs

Create and manage ENIs

You can perform the following steps to create and manage an ENI.

1. Create an ENI.
2. Attach an ENI to an instance or Attach an ENI when you create an instance.
3. Optional. Configure an ENI.
4. Assign a secondary private IP address.
5. Detach an ENI from an instance.
6. Delete an ENI.

Use tags

Create and manage launch templates

Create and manage deployment sets

Use Cloud Assistant