Configuring the Maximum Lifetime of an HDFS Token

Scenario

In security mode, users can flexibly set the maximum token lifetime and token renewal interval in HDFS based on cluster requirements.

Procedure

1. Log in to FusionInsight Manager.

   For details about how to log in to FusionInsight Manager, see Accessing MRS Manager.

2. Choose Cluster > Services > HDFS > Configurations > All Configurations.
3. Search for the following parameters and change their values as required.

   Table 1 Parameters

   Parameter	Description	Default Value
   dfs.namenode.delegation.token.max-lifetime	Maximum lifetime of a token. It is a server parameter, displayed in milliseconds. Value range: 10,000 to 10,000,000,000,000	604,800,000
   dfs.namenode.delegation.token.renew-interval	Interval at which a token is renewed. It is a server parameter, displayed in milliseconds. Value range: 10,000 to 10,000,000,000,000	86,400,000

4. Save the settings. Restart the expired service or instance for the configuration to take effect.