This topic describes the basic information and network configurations that you can view on the Instance Details page of a Hologres instance and how to change the specifications of the instance on this page. This topic also describes available connection methods.
The Instance Details page shows the basic information of a Hologres instance. The basic information includes the name, ID, region, version, billing method, specifications, and creation time.
|Network type||Endpoint format||Description||Scenario||Operation|
||The Internet. Access over the Internet consumes traffic. Hologres does not charge you for the consumed Internet traffic. Hologres supports a bandwidth of up to 200 Mbit/s.||Select this network type if you want to access a Hologres instance over a network
with no limits on network connections. Scenarios:
||You can enable or disable this network type. By default, this network type is disabled.
Note To meet the regulatory security requirements, Hologres does not provide public endpoints for instances used by CloudTmall.
||The classic network of Alibaba Cloud. The involved IP addresses and network resources of the classic network are planned and managed by Alibaba Cloud.||Select this network type if you want to access a Hologres instance over the classic network. For example, if your application is deployed on an Elastic Compute Service (ECS) instance in the classic network, you can access a Hologres instance by using its classic network endpoint.||This network type is enabled by default and cannot be disabled.|
||A private network of Alibaba Cloud that is logically isolated from other networks. You can connect to a VPC by using an Express Connect circuit.||VPCs provide improved security and flexibility than the classic network. Select this
network type in the following scenarios:
||You can enable or disable this network type.
Note We recommend that you do not disable this network type. Otherwise, you cannot use HoloWeb.
||A private network of Alibaba Cloud that is logically isolated from other networks
and associated with a Hologres instance.
Notice This network type is available only in the China (Shanghai), China (Beijing), and China (Shenzhen) regions.
|If you select this network type, you can access a Hologres instance only over the VPC that is associated with the Hologres instance.||By default, no VPC is associated with a Hologres instance.
To associate a VPC with a Hologres instance, click Associate VPC in the Actions column in the Network Information section on the Instance Details page of the Hologres instance. In the Associate VPC dialog box, set the VPC and vSwitch parameters.
Note If you use an exclusive resource group for DataWorks DataService Studio, do not associate a VPC with a Hologres instance. Otherwise, the exclusive resource group cannot be used.
- Connect over JDBCTo connect to a Hologres instance over Java Database Connectivity (JDBC) by using an extract, transform, load (ETL) tool or business intelligence (BI) tool, use the following JDBC URL:
For more information about how to use JDBC, see Use JDBC to connect to Hologres.
- Connect from the PostgreSQL clientHologres is compatible with PostgreSQL. You can connect to a Hologres instance from the PostgreSQL client. To connect to a Hologres instance from the PostgreSQL client, use the following statement:
PGUSER=<AccessId> PGPASSWORD=<AccessKey> psql -p <Port> -h <Endpoint> -d <Database>
For more information about how to use the PostgreSQL client, see PSQL quick start.
|<Access ID>||The AccessKey ID of the current Alibaba Cloud account.
You can obtain the AccessKey ID on the Security Management page.
|<Access Key>||The AccessKey secret of the current Alibaba Cloud account.
You can obtain the AccessKey secret on the Security Management page.
|<Port>||The port number of the Hologres instance.
You can view the port number of the Hologres instance on the Instance Details page in the Hologres console.
|<Endpoint>||The endpoint of the Hologres instance.
You can obtain the endpoint in the Network Information section of the Instance Details page in the Hologres console.
|<Database>||The name of the database to which you want to connect.
If you do not have a database, use the postgres database that is allocated by the system.