Error Message "connection failure error" Is Displayed During GDS Data Transmission

Symptom

Error Message "connection failure error" is displayed during GDS data transmission.

Possible Causes

1. The GDS process breaks down. Run the following command to check whether the GDS process breaks down:

   ps ux|grep gds

   If the following information is displayed, the GDS process is started successfully:

   

2. The GDS startup parameter -H is incorrectly configured.

   -H address_string: indicates servers that are allowed to connect to and use GDS. The value must be in CIDR format. Set this parameter to allow the DWS cluster to use GDS to import data. Ensure that the configured CIDR block covers all hosts in the DWS cluster.

Handling Procedure

1. Restart GDS. For details, see Installing, Configuring, and Starting GDS.
2. Change the parameter –H in the GDS startup command to 0/0 to check whether the fault is caused by this parameter. If the commands can be executed after the parameter value is changed to 0/0, the original parameter settings are improper and the configured CIDR block does not contain all hosts in the DWS cluster.