nktl_daemon

[Ruben Cardenal]

Hi guys,

This morning, I've found a process I'm sure not to have launched in one of my machines:

root 13536 1 0 10:00:43 ? 0:00 /usr/lbin/nktl_daemon 0 0 0 0 0 1 -2

Can someone tell me what's that?

TIA

[Patrick Wallek]

The following is an excerpt from the document describing how to create a Bastion host (TKB DocID: USECKBAN00000800). This document describes what some of the system daemons that run are. nktl_daemon is one that is mentioned.

***********Begin Excerpt

"nettl is the network tracing and logging subsystem, and in the system default configuration starts 3 daemons, ntl_reader, nktl_daemon and netfmt. These are easily disabled by editing /etc/rc.config.d/nettl, however you will lose potentially valuable log data, such as link down messages:

Apr 1 12:47:04 bastion vmunix: btlan: NOTE: MII Link Status Not OK - Check
Cable Connection to Hub/Switch at 1/12/0/0/4/0....

Also, by default console logging is enabled. I find little value in log messages being written to a console that is rarely looked at or may in fact be non-existent. We can disable console logging which causes the console filter formatter daemon, netfmt to not start:

# nettlconf -L -console 0
# nettl -stop
# nettl -start
Initializing Network Tracing and Logging...
Done.

The nettlconf command modifies the nettl configuration file, /etc/nettlgen.conf, so this change will persist across system starts."

**********End Excerpt