:Enable password-free access

Precautions

• After you enable password-free access for your Tair instance, the default account is used to connect to the instance. The username of the default account is the same as the instance ID, such as r-bp1zxszhcgatnx****. The default account has read and write permissions on the instance.

• For security concerns, if you use a public endpoint to connect to your Tair instance after you enable password-free access for the instance, you still need to enter a password.

Procedure

1. Log on to the Tair console and go to the Instances page. In the top navigation bar, select the region in which the instance that you want to manage resides. Then, find the instance and click the instance ID.

2. In the upper-right corner of the Connection Information section, click Enable Password-free Access.

3. In the panel that appears, read the prompt and click OK.

   Refresh the page. If the text that is displayed on the button is changed from Enable Password-free Access to Disable Password-free Access, password-free access is enabled.

4. If the instance is deployed in cloud-native mode, add the IP addresses of clients within the same VPC as the instance to a whitelist of the instance to connect the clients to the instance without using passwords.

   If the instance is deployed in classic mode, you can connect a client to the instance without the need to add the IP address of the client to a whitelist of the instance. You can use the #no_loose_check-whitelist-always parameter to control access to classic instances. By default, the #no_loose_check-whitelist-always parameter is set to no. In this case, after password-free access is enabled for a Tair instance, clients within the same VPC as the instance can connect to the instance without the need to add their IP addresses to a whitelist of the instance. For more information, see Parameters that can be configured for Tair instances.

   Note

   You cannot configure the #no_loose_check-whitelist-always parameter for cloud-native instances.

Examples

The following code provides an example on how to connect to an instance for which password-free access is enabled.

redis-cli -h host -p port
// Example: redis -h r-bp10noxlhcoim2****.redis.rds.aliyuncs.com -p 6379 

JedisPoolConfig config = new JedisPoolConfig();
// Specify the maximum number of idle connections based on your business needs. The value cannot exceed the maximum number of connections supported by the instance. 
config.setMaxIdle(100);
// Specify the maximum number of connections based on your business needs. The value cannot exceed the maximum number of connections supported by the instance. 
config.setMaxTotal(200);
config.setTestOnBorrow(false);
config.setTestOnReturn(false);
// Replace the values of the host and port parameters with the endpoint and port number of the instance. The password parameter is not required. 
String host = "r-bp10noxlhcoim2****.redis.rds.aliyuncs.com";
int port = 6379;
JedisPool pool = new JedisPool(config, host, port);
Jedis jedis = null;
try
{
    jedis = pool.getResource();
    /// ... do stuff here ... for example
    jedis.set("foo", "bar");
    System.out.println(jedis.get("foo"));
    jedis.zadd("sose", 0, "car");
    jedis.zadd("sose", 0, "bike");
    System.out.println(jedis.zrange("sose", 0, -1));
}
finally
{
    if(jedis != null)
    {
        // Close connections after each API operation is complete. To close a connection, release the connection to the connection pool instead of destroying the connection. 
        jedis.close();
    }
}
// Call this method only once when you exit. 
pool.destroy();

FAQ

• Why is the (error) ERR illegal address error returned when I use a client to connect to a Tair instance for which password-free access is enabled?

  The IP address of the client is not added to a whitelist of the instance. You can add the IP address of the client to a whitelist of the instance and try again.

Related operations

Click Disable Password-free Access to disable password-free access.

Related API operations