TSDB instances support two network access modes: Virtual Private Cloud (VPC) and public network. VPC is the default and recommended mode for production workloads because traffic stays within Alibaba Cloud's private network and is never exposed to the public internet. Public network access is available for development, testing, or scenarios where VPC connectivity is not feasible.
Both modes require an IP address whitelist to be configured on the instance before a connection address is available.
Prerequisites
Before you begin, make sure you have:
A TSDB instance
An IP address whitelist configured for the instance
The whitelist controls which source IPs can connect to the instance. Without it, no connection address is exposed, regardless of the network mode.
Connect via VPC
Each TSDB instance comes with a VPC connection address assigned at creation. To find it:
Go to the Instance Details page.
In the Basic Information section, locate the VPC Network Address field.
Use this address in your application connection string.
Enable public network access
Public network access is disabled by default. To enable it:
On the Instance Details page, go to the Basic Information section.
In the Public Network Address field, click Apply for Public Network Address.
On the whitelist settings page, enter the public IP addresses allowed to access the instance. If a whitelist is already configured, confirm the existing settings.
It takes 2 to 3 minutes for the public network address to become available. Do not refresh the page until the address appears.
Disable public network access
When you no longer need public network access, disable it to reduce your security maintenance burden — for example, you won't need to maintain a separate public IP address whitelist.
In the Public Network Address field, click Release Public Network Address.