ApsaraDB for Redis allows you to enable password-free access for a virtual private
cloud (VPC). This mode provides a secure and convenient method to connect to an ApsaraDB
for Redis instance. To enable password-free access, make sure that the client and
ApsaraDB for Redis instance are deployed within the same VPC. This way, the client
can access the ApsaraDB for Redis instance without the need to use a password. After
password-free access is enabled, you can still use the username and password to connect
to the ApsaraDB for Redis instance.
Prerequisites
The instance runs in a VPC.
Note If the network type of the instance is classic network, you must change the network
type to VPC. For more information, see Switch to VPC network.
Precautions
By default, after password-free access is enabled, you can use the account whose username
is set to the instance ID, for example, r-bp1zxszhcgatnx****, to connect to the ApsaraDB
for Redis instance. This account has read and write permissions on the instance.
To ensure security, the password is still required when you connect to an ApsaraDB
for Redis instance by using a public endpoint.
Note If you fail to connect to an ApsaraDB for Redis instance by using a public endpoint,
upgrade the minor version of the instance to the latest version. For more information,
see Upgrade the minor version.
By default, the #no_loose_check-whitelist-always parameter of the instance is set to no. This way, after password-free access is enabled, clients in the same VPC can directly
connect to the ApsaraDB for Redis instance. You do not need to add the IP addresses
of the clients to the whitelist of the ApsaraDB for Redis instance. For more information,
see Parameters overview.
Note If you run commands after connections are established, and (error) ERR illegal address is prompted, you can set the #no_loose_check-whitelist-always parameter to yes or add the IP addresses of the clients to the whitelist of the ApsaraDB for Redis
instance.
On the top of the page, select the region where the instance is deployed.
On the Instance List page, click the Instance ID of the instance.
On the right side of Connection Information, click Enable Password-free Access.
Figure 1. Enable password-free access
In the message that appears, read the content and click OK.
After you refresh the page, the Enable Password-free Access button changes to Disable Password-free Access. You can click this button to disable password-free access.
Note If password-free access is disabled, clients that are connected to the ApsaraDB for
Redis instance can no longer access the instance. To make sure that clients can connect
to the instance when password-free access is disabled, you must set the clients to
use the username and password to authenticate to the instance.
Password-free connection example
In this example, the Redis command line interface redis-cli is used. After you enable
password-free access, enter the redis-cli -h <host> -p <port> command to connect to your client without a password, such as redis -h r-bp10noxlhcoim2****.redis.rds.aliyuncs .com -p 6379.
Figure 2. Example
