Connecting to an Instance Using a Load Balancer Address (Recommended)

Precautions

• The target instance must be in the same VPC and subnet as the ECS.
• The ECS must be in a security group that has access to the instances.

  Scenario 1: If the instance is associated with the default security group, you do not need to configure security group rules.

  Scenario 2: If the instance is not associated with the default security group, check whether the security group rules allow the ECS to connect to the instance.

  • If yes, the ECS can connect to the instance.
  • If no, add an inbound rule to the security group.

    For details about how to configure a security group, see Configuring Security Group Rules for Nodes.

Prerequisites

• An ECS has been created. The following uses a Linux ECS as an example. For details, see Purchasing an ECS in Getting Started with Elastic Cloud Server.
• Download the Redis client installation package.

Procedure

1. Log in to the ECS. For details, see Logging In to an ECS in Getting Started with Elastic Cloud Server.
2. Obtain the Redis client.

   Method 1

   Run the following command to download the Redis client.

   wget http://download.redis.io/releases/redis-6.2.0.tar.gz

   Method 2

   Download the Redis client from the address provided in Prerequisites and upload the Redis client installation package to the ECS.

3. Decompress the client tool package.

   tar -xzf redis-6.2.0.tar.gz

4. Connect to the instance in the src directory.

   cd redis-6.2.0

   make

   cd src

   ./redis-cli -h <DB_HOST> -p <DB_PORT> -a <DB_PWD>

   Example:

   ./redis-cli -h 192.xx.xx.xx -p 8635 -a <DB_PWD>

   Table 1 Parameter description

   Parameter	Description
   <DB_HOST>	Load balancer IP address of the instance to be connected. After the load balancer IP address is created, click the instance name to go to the Basic Information page and obtain the load balancer IP address in the Connection Information area.
   <DB_PORT>	Access port corresponding to the load balancer IP address of the instance. The procedure is as follows: Click the name of the instance to go to the Basic Information page. In the Connection Information area, you can find the access port in field Database Port.
   <DB_PWD>	Administrator password set when you buy a GeminiDB Redis instance

5. Check the results. If the following information is displayed, the connection is successful.

   IP:port>