Error: "The configured wrapper.java.command could not be found" after installing a Network Monitor on Linux.

Products

• Data Loss Prevention Core Package
• Data Loss Prevention
• Data Loss Prevention Network Monitor

Issue/Introduction

A Network Monitor was installed on a Linux server but the services fail to start.
The logs show the following:

The configured wrapper.java.command could not be found, attempting to launch anyway: /opt/AdoptOpenJRE/jdk8u352-b08-jre/bin/java

The pcap library is installed.
There is no high speed packet capture NIC installed in the server.

Ran the following commands, they made no difference:

chown root:protect PacketCapture
chown root:protect PacketCaptureLauncher
chown root:protect PacketCaptureLoaderArguments.conf
chmod 6755 PacketCapture
chmod 6755 PacketCaptureLauncher
chmod 6755 PacketCaptureLoaderArguments.conf

Resolution

The NIC connected to the span/tap port was not visible in the console path "System >Servers and Detectors > Overview > Configure Server > Packet Capture" tab.

The fstab folder had the mounted opt drive configured with nosuid. 
Once nosuid was removed, DLP recognized the NIC.
After selecting that NIC in the console, and saving the change, the system started to work.

nosuid = Block the operation of suid, and sgid bits.

 

Also see KB 160662 - Error 3302 - PacketCapture could not elevate its privilege level