Configuring Security Group Rules for Nodes

Precautions

• Each account can create up to 500 security group rules by default.
• Too many security group rules will increase the first packet latency, so a maximum of 50 rules for each security group is recommended.
• One security group can be associated with only one GeminiDB Redis instance.
• For details about how to configure security group rules, see Table 1.

  Table 1 Parameter description

  Scenario	Description
  Connecting to an instance over a private network	Configure security group rules as follows: If a GeminiDB Redis instance and the ECS used for accessing the instance are in the same security group, they can communicate with each other by default. No security group rules need to be configured. If the instance and the ECS are not in the same security group, configure security group rules, respectively. Configure inbound rules for the security group associated with the GeminiDB Redis instance. For details, see Procedure. There is no need to configure security rules for the ECS because the default security group rule of the ECS allows all outbound data packets. If not all outbound traffic is allowed in the security group, configure an outbound rule for the ECS.
  Connecting to an instance over a public network	If you connect to a GeminiDB Redis instance through a public network, configure inbound rules for the security group associated with the GeminiDB Redis instance. For details, see Procedure.

Procedure

1. Log in to the GeminiDB console.
2. In the service list, choose Databases > GeminiDB.
3. On the Instances page, locate the instance that you want to configure security group rules for and click its name.
4. Configure security group rules.
   Figure 1 Security group
   

5. Add Inbound Rule
   1. Click the Inbound Rules tab.
      Figure 2 Inbound rules
      

   2. Click Add Rule. The Add Inbound Rule dialog box is displayed.
      Figure 3 Adding a rule
      
   3. Add a security group rule as prompted.

      Table 2 Inbound rule settings

      Parameter	Description	Example Value
      Protocol & Port	The network protocol required for access. Available options: All, TCP, UDP, ICMP, or GRE Port: The port or port range that allows the access to the ECS. Range: 1 to 65535 Common ports are listed in .	TCP
      Type	IP address type. This parameter is available after IPv6 is enabled. IPv4 IPv6	IPv4
      Source	The IP address, IP address group, or security group that the rule applies to, which allows access from IP addresses or instances in another security group. Examples: IPv4 single IP address: 192.168.10.10/32 Subnet: 192.168.1.0/24 All IP addresses: 0.0.0.0/0 sg-abc (security group) For more information about IP address groups, see .	0.0.0.0/0
      Description	(Optional) Provides supplementary information about the security group rule. The description can contain up to 255 characters and cannot contain angle brackets (<>).	-

6. Click OK.