This topic describes how to configure an instance, including its network and connection methods in the Hologres console.
Usage notes about dedicated VPC
Only traffic originating from the VPC can access your Hologres instance. To enable access from other VPCs, connect them to the instance's associated VPC. See Network connectivity.
Services (Flink, ECS, etc.) in the dedicated VPC can access your instance from any zone within that VPC.
Scale instance resources
On the Instance Details page, view basic information about your instance, such as the name, ID, region, version, billing model, instance type, and creation time.
Click Upgrade or Downgrade to scale instance resources.
Configure network
The Network Information section displays four network options available for the Hologres instance: public network, classic, VPC, and selected VPC. You can select a network type to connect to your tools.
The ID of an instance can be found in the section of the Instance Details page. The region is the region where the instance is located.
Network type | Endpoint | Description | Scenarios | Actions |
Public Network |
| The Internet. Access over the Internet incurs traffic overhead. However, Hologres does not currently charge for traffic. A bandwidth of 200 Mbps is supported. | Public network is suitable for scenarios without network access restrictions, such as the following:
Note Before disabling public network, ensure no applications are accessing Hologres via public network. | Public network is disabled by default. Note Due to security and compliance requirements, public network is not available for instances in Alibaba JST Titans . |
Classic |
| The public infrastructure network of Alibaba Cloud. Alibaba Cloud is responsible for the planning and management of IP addresses and the network. A bandwidth of 20 Gbps is supported. | Use this network type for applications within the classic network to access Hologres. For example, if an application is deployed on an ECS instance in the classic network, it can connect to the classic network address of Hologres. | This network type is enabled by default and cannot be disabled. |
Dedicated VPC |
| A logically isolated private network that connects only to the specified VPC. A bandwidth of 20 Gbps is supported. | This network type is recommended for VPC connections. Compared to a standard VPC network, a specified VPC network only connects to the VPC that you bind. It does not connect to other VPCs. This is applicable to the following scenarios:
Note After you link a VPC, it takes about 30 seconds for the Domain Name System (DNS) to update before you can obtain the IP address. | By default, no VPC is bound. To link a VPC, click Associate a VPC in the Actions column. In the dialog box, select a VPC and a vSwitch. |
VPC |
| A logically isolated private network. A VPC is an isolated network environment. It supports connections over leased lines and provides a bandwidth of 20 Gbps. | Compared to the classic network, a VPC offers greater security and flexibility. This network type is being phased out. It is suitable for scenarios where an application is deployed on an ECS instance in a VPC. The application can directly connect to the Hologres VPC endpoint. Cross-region connections are not supported. Note Starting from December 26, 2022, new instances, including those created from backups, are no longer provided with VPC endpoints. They use the more secure specified VPC endpoints instead. A specified VPC endpoint connects only to the VPC that you select when you purchase the instance, providing better security and isolation. Existing instances are not affected. We recommend that you disable the original VPC endpoint and use a specified VPC endpoint. | You can enable or disable this network type. Note If you disable the VPC network, you cannot enable it again.
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Associate a dedicated VPC
A specified VPC endpoint can connect only to the VPC that you select. This provides enhanced security and isolation. We recommend that you disable the original VPC endpoint and use a specified VPC endpoint instead.
Follow these steps:
Log on to the Hologres console.
In the top navigation bar, select a region.
In the left navigation menu, click Instances.
On the Instances page, click the target instance's name.
On the Instance Details page, in the Network Information section, click Associate VPC in the Actions column for the Dedicated VPC row.
In the Associate VPC dialog box, select a VPC and a vSwitch.
NoteYou will only see VPCs located in the same region and vSwitches within the same region and zone as your instance
Hologres V1.3 consumes three IP addresses, while V2.0 consumes two. Please ensure your chosen vSwitch has sufficient available IP addresses to meet these needs.
Click OK.
The VPC association begins. After it is complete, a VPC endpoint is generated.
Remove a dedicated VPC
Follow these steps:
Log on to the Hologres console.
In the top navigation bar, select a region.
In the left navigation pane, click Instances.
On the Instances page, click the name of the target instance.
On the Instance Details page, in the Network Information section, click Release VPC in the Actions column for the Dedicated VPC row.
Click Release in the dialog box.
The VPC is released.
NoteAfter release, you can no longer connect to the instance through the VPC endpoint.