Hey Darren. I neglected to put my logging config in my original email,
but I'm logging at severity INFO and Debug level 0. The INFO level is
what has all of the relevant logs that I need for traffic. What I'm
really needing is some way to control the verbosity at the INFO level
which doesn't seem possible.
Jim
On 2025-09-04 06:27, Darren Ankney wrote:
Hi Jim,
You can control how much is logged in two ways. The first is with
logging severity and debuglevel (see here:
https://kea.readthedocs.io/en/kea-3.0.1/arm/logging.html#the-severity-string-logger
and here:
https://kea.readthedocs.io/en/kea-3.0.1/arm/logging.html#the-debuglevel-integer-logger).
The second is by using separate log output destinations
(https://kea.readthedocs.io/en/kea-3.0.1/arm/logging.html#the-output-options-list-logger)
per name
(https://kea.readthedocs.io/en/kea-3.0.1/arm/logging.html#the-name-string-logger).
You can also set a different severity per logging configuration.
Something like this:
"Server": {
"loggers": [
{
"name": "kea-dhcp4.leases",
"output-options": [
{
"output": "leases.log"
}
],
"severity": "INFO",
},
{
"name": "kea-dhcp4.packets",
"output-options": [
{
"output": "packets.log"
}
],
"severity": "DEBUG",
"debuglevel": 99
}
]
}
You can set as many of these up as you like. Perhaps one per logger
name (see list here:
https://kea.readthedocs.io/en/kea-3.0.1/arm/logging.html#id3)
Please note that you can also send all of these to the same
destination (file, stdout or syslog) and just use the separate logger
names to control HOW MUCH DETAIL is logged by each.
Thank you,
Darren Ankney
On Sun, Aug 31, 2025 at 4:25 PM Jim <[email protected]> wrote:
I’m a new user so I’m sure this may already have been covered but I
wasn’t able to find any info after some searching.
I’m migrating from the older dhcpd package, and I’m trying to slim
down the number of things that kea puts into the log file. I found
the pattern used for logging and made minor changes that helped, but
the actual messages logged seem overly verbose.
I found this article which calls out the differences in the two
packages, what would usually be about 4 log lines in the other
software are closer to 8 or more in kea.
https://kb.isc.org/docs/isc-dhcp-logging-compared-to-kea
I do refer to my logs regularly for troubleshooting, but the length
and quantity of lines logged for each dhcp request is really going to
strain my eyes. LoL
Am I missing anything in the configuration that would reduce the
amount of info logged?
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