Db2 client communication issues

When you install Guardium® Data Security Center, you might notice issues with the Db2 pod.

Symptoms

Cannot connect to Db2 even though the Db2 pods are running.
Failed to connect: [IBM][CLI Driver] SQL30081N A communication error has been detected. Communication protocol being used: "TCP/IP". Communication API being used: "SOCKETS". Location where the error was detected: "172.21.75.113". Communication function detecting the error: "connect". Protocol specific error code(s): "111", "*", "*". SQLSTATE=08001 SQLCODE=-30081
Failed to connect: [IBM][CLI Driver] SQL30081N A communication error has been detected. Communication protocol being used: "TCP/IP". Communication API being used: "SOCKETS". Location where the error was detected: "172.21.75.113". Communication function detecting the error: "connect". Protocol specific error code(s): "111", "*", "*". SQLSTATE=08001 SQLCODE=-30081
Failed to connect: [IBM][CLI Driver] SQL30081N A communication error has been detected. Communication protocol being used: "TCP/IP". Communication API being used: "SOCKETS". Location where the error was detected: "172.21.75.113". Communication function detecting the error: "connect". Protocol specific error code(s): "111", "*", "*". SQLSTATE=08001 SQLCODE=-30081

Causes

The storage class was not configured.

Resolving the problem

If you are installing services that depend on NFS and you are planning to use IBM Cloud File Storage on NFS 4 for persistent storage, you must configure ID mapping. For more information, see https://www.ibm.com/docs/en/cloud-paks/cp-data/4.5.x?topic=storage-setting-up-cloud-file.