5 Dub
2024
5 Dub
'24
13:22
Hi,
for some time now I have a problem running kresd on my raspberry pi.
I am running pihole and use kresd as resolver behind pihole. Everything
works fine until some day where kresd "decides" to crash. It is always
the same error message (please see below).
I then have to manually stop the garbage collector, remove all cache
files and restart kresd (which automatically starts the garbage collector).
My pi is pxe boot and the root partition is on an nfs mounted volume.
The volume has several terra byte of space left.
After a restart it will run flawless for tow or three weeks just to
crash with the same error again.
Any idea how this happens?
/Ulrich
root@pi-hole1:~# systemctl status kresd
● kresd.service - Knot Resolver daemon
Loaded: loaded (/lib/systemd/system/kresd.service; enabled; vendor
preset: enabled)
Active: failed (Result: exit-code) since Fri 2024-04-05 02:31:47
CEST; 6h ago
Docs: man:kresd.systemd(7)
man:kresd(8)
Process: 5106 ExecStart=/usr/sbin/kresd -c
/usr/lib/arm-linux-gnueabihf/knot-resolver/distro-preconfig.lua -c
/etc/knot-resolver/kresd.conf -n (code=exited, status=1/FAILURE)
Process: 5110 ExecStopPost=/usr/bin/env rm -f
/run/knot-resolver/control/ (code=exited, status=1/FAILURE)
Main PID: 5106 (code=exited, status=1/FAILURE)
CPU: 648ms
Apr 05 02:31:45 pi-hole1 kresd[5106]: [C]: at 0x0001b2d8
Apr 05 02:31:45 pi-hole1 kresd[5106]: [C]: in function 'pcall'
Apr 05 02:31:45 pi-hole1 kresd[5106]:
...b/arm-linux-gnueabihf/knot-resolver/distro-preconfig.lua:9: in main chunk
Apr 05 02:31:45 pi-hole1 kresd[5106]: ERROR: net.listen() failed to bind
Apr 05 02:31:46 pi-hole1 kresd[5106]: [system] error while loading
config: /usr/lib/arm-linux-gnueabihf/knot-resolver/sandbox.lua:402:
can't open cache path '/var/cache/knot-resolver'; working directory
'/var/lib/knot-resolver'; No space left on device (workdir
'/var/lib/knot-resolver')
Apr 05 02:31:47 pi-hole1 systemd[1]: kresd.service: Main process exited,
code=exited, status=1/FAILURE
Apr 05 02:31:47 pi-hole1 env[5110]: rm: cannot remove
'/run/knot-resolver/control/': Is a directory
Apr 05 02:31:47 pi-hole1 systemd[1]: kresd.service: Control process
exited, code=exited, status=1/FAILURE
Apr 05 02:31:47 pi-hole1 systemd[1]: kresd.service: Failed with result
'exit-code'.
Apr 05 02:31:47 pi-hole1 systemd[1]: Failed to start Knot Resolver daemon.
root@pi-hole1:~# ps aux Op | grep kres
knot-re+ 569 0.1 0.1 114480 4140 ? Ss Apr02 5:15
/usr/sbin/kres-cache-gc -c /var/cache/knot-resolver -d 1000
root 23835 0.0 0.0 10292 504 pts/0 S+ 09:00 0:00 grep kres
root@pi-hole1:~# systemctl status | grep kres
│ └─23861 grep kres
├─system-kresd.slice
│ └─kres-cache-gc.service
│ └─569 /usr/sbin/kres-cache-gc -c
/var/cache/knot-resolver -d 1000
root@pi-hole1:~# systemctl stop kres-cache-gc