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Why does the Netprobe log show repeating errors like "Cannot get device settings: Invalid argument"?

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Howard Lee
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In older versions of Netprobe or Linux kernel, the Network plugin relies on OS commands to retrieve information for Duplex and Link information.

If it is not configured properly, the following errors may be seen which are output from "ethtool" command.

Cannot get device settings: Operation not permitted 
Cannot get wake-on-lan settings: Operation not permitted 
Cannot get message level: Operation not permitted 
Cannot get link status: Operation not permitted
Cannot get device settings: Invalid argument
Cannot get wake-on-lan settings: Invalid argument
Cannot get message level: Invalid argument
Cannot get link status: Invalid argument

It is recommended to use recent version of Netprobe and Linux kernel. In Netprobe version GA3.1 (PLI-1672) and above, the Network plugin can now use APIs/system files if available. The Linux kernel should be at version 2.6.33 or above, or please check if /sys/class/net file system is present.

For older versions of Netprobe or Linux kernel, please ensure that the Netprobe user can run "ethtool" command with appropriate path and permission. Depending on the OS setup, it might be needed to configure with sudo access.

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