redis-cli is a built-in command line interface (CLI) of open source Redis. You can use redis-cli to connect to an ApsaraDB for Redis instance from an Elastic Compute Service (ECS) instance or on-premises device to manage data.

Workflow

Procedure Description
1. Specify the account used to connect to an ApsaraDB for Redis instance and the account password. The following methods are available:
2. Configure a whitelist. The recommended network type varies with device. Choose a network type that suits your device and add the IP address of the device to a whitelist of the ApsaraDB for Redis instance.
  • ECS instance (recommended):VPC is recommended.

    Make sure that the ECS instance and the ApsaraDB for Redis instance are deployed in the same VPC and that a whitelist of the ApsaraDB for Redis instance contains the private IP address of the ECS instance.

    Note If the ECS instance and the ApsaraDB for Redis instance are located in different regions, these two instances are deployed in different VPCs. In this case, add the public IP address of the ECS instance to a whitelist of the ApsaraDB for Redis instance and connect to the ApsaraDB for Redis instance over the Internet.
  • On-premises device:Internet can be used.

    Add the public IP address of the on-premises device to a whitelist of the ApsaraDB for Redis instance.

For more information, see Configure whitelists.
3. Obtain the connection information.
  • If you use a VPC, obtain the endpoint of the ApsaraDB for Redis instance in the VPC in the ApsaraDB for Redis console.
  • If you use the Internet, apply for a public endpoint for the ApsaraDB for Redis instance and obtain the allocated public endpoint in the ApsaraDB for Redis console. For more information, see Apply for a public endpoint for an ApsaraDB for Redis instance.
    Note By default, only VPC endpoints are available for ApsaraDB for Redis instances. If you want to connect to an ApsaraDB for Redis instance over the Internet, you must apply for a public endpoint.

For more information, see View endpoints.

4. Use redis-cli to connect to the ApsaraDB for Redis instance. Run the following commands based on your needs in the decompressed redis-cli directory.
  • Command syntax used to establish a connection: redis-cli -h hostname -p port

    Sample command: redis-cli -h r-bp1zxszhcgatnx****.redis.rds.aliyuncs.com -p 6379

  • Command syntax used to enter a password: AUTH user:password

    Sample command: AUTH testaccount:Rp829dlwa

For more information, see the Procedure section of this topic.

Procedure

  1. Log on to the device on which you want to install redis-cli, such as an ECS instance or an on-premises device.
    Install redis-cli if needed. For more information, see the Appendix: How to install redis-cli section of this topic.
  2. Go to the directory in which redis-cli is installed.
    • Windows: Open the CLI and go to the directory in which redis-cli is installed.
    • Linux: Go to the Redis directory that is suffixed with src. Example: cd /root/redis-6.0.9/src.
  3. Obtain the connection information and run the following command to connect to an ApsaraDB for Redis instance:
    redis-cli -h hostname -p port [-c]
    Note If you want to start redis-cli in PowerShell and you use the Windows operating system, run the .\redis-cli -h hostname -p port [-c] command.
    Table 1. Parameters
    Parameter Description Method to obtain the parameter value
    hostname The endpoint of the ApsaraDB for Redis instance.
    • If you connect to the ApsaraDB for Redis instance over a VPC, obtain the endpoint of the ApsaraDB for Redis instance in the VPC.
    • If you connect to the ApsaraDB for Redis instance over the Internet, obtain the public endpoint of the ApsaraDB for Redis instance.

    For more information, see View endpoints.

    port The port number of the ApsaraDB for Redis instance. Use the default port number 6379 or specify a custom port number. For more information, see Change the endpoint or port number of an ApsaraDB for Redis instance.
    -c Enables the cluster mode. The cluster mode is available only if the ApsaraDB for Redis instance is a cluster instance that uses a private endpoint. For more information, see Cluster master-replica instances and Enable the direct connection mode.
    Connection examples:
    • The following sample command is suitable for scenarios where ApsaraDB for Redis instances are connected by using default endpoints, such as endpoints of standard instances and proxy endpoints of cluster instances:
      redis-cli -h r-bp1zxszhcgatnx****.redis.rds.aliyuncs.com -p 6379
    • The following sample command is suitable for scenarios where ApsaraDB for Redis cluster instances are connected by using private endpoints:
      redis-cli -h r-bp1zxszhcgatnx****.redis.rds.aliyuncs.com -p 6379 -c
  4. Run the following command to verify the password:
    AUTH password
    Table 2. Parameters
    Parameter Description
    password
    The password of the account.
    • If you use the default account whose username is the same as the instance ID, enter the password.
    • If you use a custom account, enter the password in the user:password format. For example, if the username of the custom account is testaccount and the password is Rp829dlwa, enter testaccount:Rp829dlwa as the password.
    Note
    • If you forget the password or have not set a password, you can reset the password. For more information, see Change or reset the password.
    • If password-free access is enabled for the ApsaraDB for Redis instance, you can run Redis commands without performing this step when you connect to the instance over a VPC. For more information, see Enable password-free access.

    Sample command:

    AUTH testaccount:Rp829dlwa
    If the ApsaraDB for Redis instance is connected and Redis commands can be run on the instance, OK is displayed.

Appendix: How to install redis-cli

redis-cli is automatically installed when you install Redis on your ECS instance or on-premises device. If you use redis-cli to connect to an ApsaraDB for Redis instance, redis-cli does not need to have the same version as the ApsaraDB for Redis instance.

  1. Log on to the device on which you want to install redis-cli, such as an ECS instance or an on-premises device.
  2. Download and install redis-cli.
    • Linux
      1. Run the following command to download the Redis source code package:
        wget https://download.redis.io/releases/redis-6.0.9.tar.gz
        Note Redis 6.0.9 is used in this example to demonstrate the operations. You can install other versions. For more information, visit Download.
      2. Run the following command to decompress the Redis source code package:
        tar xzf redis-6.0.9.tar.gz
      3. Run the following command to go to the directory to which the Redis source code package is decompressed. Then, compile and install Redis.
        cd redis-6.0.9&&make
        Note It takes 2 or 3 minutes to compile and install Redis.
    • Windows

      Only 64-bit Windows operating systems are supported.

      1. Download the Redis-x64-3.2.100.zip package.
        Note Redis that is compatible with Windows 3.2 is used in this example to demonstrate the operations. You can also install other versions. For more information, visit MicrosoftArchive-Redis.
      2. Decompress the Redis-x64-3.2.100.zip package to the directory in which you want to install Redis.

Common errors and troubleshooting

Note If the minor version of your instance is outdated, the returned error messages may be inconsistent with those listed in the following table. We recommend that you update your instance to the latest minor version. For more information, see Update the minor version.
Error message Cause and solution
(error) ERR illegal address A whitelist is not configured as required. For more information, see the Workflow section of this topic.
(error) ERR client ip is not in whitelist
  • (error) ERR invalid password
  • (error) WRONGPASS invalid username-password pair
The password is invalid. Specify the correct password in a valid format. The password format varies with the account type.
  • If you use the default account whose username is the same as the instance ID, enter the password.
  • If you use a custom account, enter the password in the user:password format. For example, if the username of the custom account is testaccount and the password is Rp829dlwa, enter testaccount:Rp829dlwa as the password.
Note
  • If you use a third-party database management tool such as Remote Desktop Manager (RDM) to connect to an ApsaraDB for Redis instance, enter the password in the user:password format.
  • If you forget your password, reset it. For more information, see Change or reset the password.