Hi,
We are currently implementing Kea for a multi tenant/VRF scenario. We do this
by running multiple instances of kea-dhcp4 with a systemd unit template.
Because we have multiple Kea instances running, we need separate folders for
storing PIDs, lock files and configs. So far, this is working fine. The Kea
service is running, establishing HA session and serving requests.
We just have a problem with the periodic lease file cleaning performed by
kea-lfc, while the lease file cleanup seems to be successful. It is logging
errors relating to using a lock file for the logger.
Jun 04 15:49:27 dhcp-01 kea-dhcp4-VRF039[1395]: INFO DHCPSRV_MEMFILE_LFC_START
starting Lease File Cleanup
Jun 04 15:49:27 dhcp-01 kea-dhcp4-VRF039[1395]: INFO
DHCPSRV_MEMFILE_LFC_EXECUTE executing Lease File Cleanup using:
/usr/sbin/kea-lfc -4 -x /var/lib/kea-VRF039/dhcp4.leases.2 -i
/var/lib/kea-VRF039/dhcp4.leases.1 -o /var/lib/kea-VRF039/dhcp4.leases.output
-f /var/lib/kea-VRF039/dhcp4.leases.completed -p
/var/lib/kea-VRF039/dhcp4.leases.pid -c ignored-path
Jun 04 15:49:28 dhcp-01 kea-dhcp4-VRF039[2571]: Unable to use interprocess sync
lockfile (No such file or directory): /var/run/kea/logger_lockfile
Jun 04 15:49:28 dhcp-01 kea-dhcp4-VRF039[2571]: Unable to use interprocess sync
lockfile (No such file or directory): /var/run/kea/logger_lockfile
---- 6 more identical messages ----
I have tried manually running the process with the specified arguments from the
log message and setting the KEA_LOCKFILE_DIR environment variable. However,
kea-lfc still doesn’t seem to use the environment variable.
$ export KEA_LOCKFILE_DIR=/run/lock/kea-VRF039
$ echo $KEA_LOCKFILE_DIR
/run/lock/kea-VRF039
$ sudo -u _kea -g _kea \
/usr/sbin/kea-lfc -4 \
-x /var/lib/kea-VRF039/dhcp4.leases.2 \
-i /var/lib/kea-VRF039/dhcp4.leases.1 \
-o /var/lib/kea-VRF039/dhcp4.leases.output \
-f /var/lib/kea-VRF039/dhcp4.leases.completed \
-p /var/lib/kea-VRF039/dhcp4.leases.pid \
-c ignored-path
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
Unable to use interprocess sync lockfile (No such file or directory):
/var/run/kea/logger_lockfile
I have read through the code and it seems like the environment variable should
be used. So I am not sure what’s going wrong. I have found an issue on the
nixpkgs GitHub which seems to describe the same issue (kea-lfc not using
KEA_LOCKFILE_DIR) https://github.com/NixOS/nixpkgs/issues/265826
Is this a known issue or am I doing something wrong?
Some additional info:
Distro: Ubuntu 24.04 LTS
Using the package from ubuntu APT sources:
Package: kea-dhcp4-server
Version: 2.4.1-3build3
Regards,
Martijn--
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