The message 

ERROR: ProcessContext::initialise Unable to get group info : Success(0)

can appear in the netprobe when the netprobe is started up / restarted.

Example

2023-03-31 10:34:35.096+0000 *****************************************************************************************************************************
2023-03-31 10:34:35.096+0000 Geneos EMF2 Netprobe GA6.2.1-230214 (with support for CORE,ORACLE,SQL_TOOLKIT,IXWATCH_RTT,RMC,MQ,RV) (c) 1995-2023 ITRS Group
2023-03-31 10:34:35.096+0000 *****************************************************************************************************************************
2023-03-31 10:34:35.097+0000 INFO: Build type: linux_64:Release
2023-03-31 10:34:35.097+0000 INFO: Running from: /itrs/netprobe
2023-03-31 10:34:35.097+0000 INFO: User/uid/gid: root/0/0
2023-03-31 10:34:35.097+0000 INFO: Current path: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
2023-03-31 10:34:35.097+0000 INFO: LD_LIBRARY_PATH has not been set
2023-03-31 10:34:35.098+0000 ERROR: ProcessContext::initialise Unable to get group info : Success(0)

The error means the running user of netprobe has no rights to enquiry the AD/LDAP for the group info they belong. In that case, it should be related to be a local account rather than a domain account. Even so "Success(0)" means no error was returned for the query request but the query was successful but not response obtained.

By default Linux is designed to only have root as admin (userid 0 and group id 0) and the other users to be sudoers (elevated rights), when more than one user is assigned to group 0 then linux Process Context will return no group info can be extracted. Security enhancement software normally modify the groups so only specific users or groups can obtain information.

The error in the grand scheme of things is harmless it will not impact monitoring.

Further Reading

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security-enhanced_linux/sect-security-enhanced_linux-selinux_contexts-selinux_contexts_for_processes