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Constraints

To ensure the stability and security of GaussDB(openGauss), certain constraints are put in place for access or permission control. Table 1 describes such constraints.

Table 1 Function constraints

Function Item

Constraints

Database access
  • If remote access is not enabled, GaussDB(openGauss) DB instances must be in the same VPC subnet as the ECSs associated with these instances.
  • Security group rules must be added to allow the ECSs to access GaussDB(openGauss) DB instances.

    By default, a GaussDB(openGauss) DB instance cannot be accessed by an ECS in a different security group. To allow it, you must add an inbound rule to the GaussDB(openGauss) security group.

  • The default port is 8000. You can change it only when creating the DB instance.

Deployment

ECSs in which GaussDB(openGauss) DB instances are deployed are not directly visible to users. You can access GaussDB(openGauss) DB instances only through an IP address and a port number.

Database root permissions

Only the root permissions are available on the instance creation page.

Database parameter modification

Some parameters can be modified on the console.

DB instance reboot

GaussDB(openGauss) DB instances cannot be rebooted through commands. They must be rebooted on the management console.

Backup files

GaussDB(openGauss) backup files are stored in OBS buckets and are not visible to users.
Parent topic: Introduction