Notes and Constraints on Using FlexusL Instances

Quota

• By default, you can create a maximum of five FlexusL instances in total in a region.
• You can apply for up to five ICP filings for a FlexusL instance.

Package management

• A FlexusL instance package can have only one data disk, one backup vault, and one HSS.
• A FlexusL instance is actually a package of resources. Resources in the package are created, unsubscribed, and renewed together. The data disk, backup vault, HSS, and EIP included in the package cannot be unsubscribed separately.

Package expansion

• If a resource of a certain service type has been added to the instance package, no more resources of such service type can be added. For example, if a FlexusL instance has a data disk attached already, no more data disks can be attached to it.
• Currently, only data disks can be added on the FlexusL console.
  To add backup vaults and HSS, you need to go to the CBR and HSS consoles separately. For details, see Purchasing a Server Backup Vault and Accessing HSS.

  NOTE:

  Data disks can be added only on the FlexusL console. You cannot add and attach data disks to FlexusL instances on the EVS console or attach existing data disks.

• Data packages cannot be purchased separately.
• The added resources have the same expiration time as the FlexusL instance. They cannot be removed or unsubscribed separately.
• Resources can be added only when the FlexusL instance is running or stopped.

Data disk/backup vault expansion

• Expanding the disk capacity does not affect the existing data on the cloud server, but incorrect operations may lead to data loss or exceptions. You are advised to back up the disk data using CBR before expansion.
• Only data disks can be expanded separately. System disks cannot be expanded separately. You can expand the system disk capacity by upgrading the instance specifications. For details, see Upgrading a FlexusL Instance.
• The disk capacity can only be expanded, not reduced.
• The additional capacity has the same expiration time as the FlexusL instance and cannot be unsubscribed from separately.
• The disk can only be expanded when the server is Running or Stopped.

Backup and restore

FlexusL server data cannot be backed up using EVS disk snapshots. To back up and restore server data, use Cloud Backup and Recovery (CBR). For details, see Backing Up and Restoring a FlexusL Instance.

Image

• If a FlexusL instance is created using an application image, ensure that the application has been installed from the image and running properly on the instance before you reset the instance password, or restart, start, or stop the instance. Otherwise, you may fail to log in to the image application dashboard.
• For details about the restrictions on using a private image to create a FlexusL instance or change the OS, see Managing Private Images.

Networking

• Public network
  • By default, an EIP is assigned for an FlexusL instance. It cannot be changed and will not be retained after the instance is released.
  • IPv6 addresses cannot be configured for FlexusL.
• Private network
  • The VPC cannot be changed.
  • By default, a private IP address is assigned for an FlexusL instance. The assigned private IP address cannot be changed and will not be retained after the instance is released.