Dear Knot Resolver users,
Knot Resolver 5.1.3 has been released!
Improvements
------------
- capabilities are no longer constrained when running as root (!1012)
- cache: add percentage usage to cache.stats() (#580, !1025)
- cache: add number of cache entries to cache.stats() (#510, !1028)
- aarch64 support again, as some systems still didn't work (!1033)
- support building against Knot DNS 3.0 (!1053)
Bugfixes
--------
- tls: fix compilation to support net.tls_sticket_secret() (!1021)
- validator: ignore bogus RRSIGs present in insecure domains (!1022,
#587)
- build if libsystemd version isn't detected as integer (#592, !1029)
- validator: more robust reaction on missing RRSIGs (#390, !1020)
- ta_update module: fix broken RFC5011 rollover (!1035)
- garbage collector: avoid keeping multiple copies of cache (!1042)
Full changelog:
https://gitlab.nic.cz/knot/knot-resolver/raw/v5.1.3/NEWS
Sources:
https://secure.nic.cz/files/knot-resolver/knot-resolver-5.1.3.tar.xz
GPG signature:
https://secure.nic.cz/files/knot-resolver/knot-resolver-5.1.3.tar.xz.asc
Documentation:
https://knot-resolver.readthedocs.io/en/v5.1.3/
--
Tomas Krizek
PGP: 4A8B A48C 2AED 933B D495 C509 A1FB A5F7 EF8C 4869
I am newby in kresd and lua
ipv4 format in documentation 127.0.0.1 as "\127\0\0\1" is new for me
i meen "fe80::56e6::f188:75d6" as "\fe80\\56e6\f188\75d6" is no right way (no work for me)
i will try kres.str2ip('........')
On 13. 08. 20 8:35, knot-resolver-users-bounces(a)lists.nic.cz wrote:
> how is correct syntax for ipv6 address in policy.ANSWER ?
Hello,
and thank you for pointing out our insufficient documentation.
I've attempted to clarify it in the following change:
https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1037/diffs?view=p…
Does the text on right side (green part) answer your question? If not, what is unclear?
--
Petr Špaček @ CZ.NIC
Hello all,
I have a question regarding cache size and it’s using. We are running
knot-resolver on RaspberryPI 4 (as secondary cache). Previously we had
256MB cache as tmpfs and hit issue that process crashed due to “No space
left on device (workdir '/var/lib/knot-resolver')” I doubled the site to
512MB, but same issue occurs. My question is why it crash even from the
logs the usage of cache is about 80 percent (same in the case with 256MB).
I taught that kres-cache-gc is taking care about its size and it does not
allow to full the cache and prevent writing to it in the way that main
process crash. Should we increase the cache size or we hit a some bug? Any
other suggestion what could cause that cache is full and not “cleared”?
Thank you for tip and have a nice day. Petr Kyselak
Config:
/etc/fstab
tmpfs /var/cache/knot-resolver tmpfs
rw,size=512m,uid=knot-resolver,gid=knot-resolver,nosuid,nodev,noexec,mode=0700
0 00
-- Cache size
cache.size = cache.fssize() - 10*MB
Logs:
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Cache analyzed in 1.41
secs, 1038386 records, limit category is 100.
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: 0 records to be deleted
using 0.00 MBytes of temporary memory, 0 records skipped due to memory
limit.
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Deleted 0 records (0
already gone) types
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: It took 0.00 secs, 0
transactions (OK)
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Usage: 81.32% (428077056 /
526385152)
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Cache analyzed in 1.41
secs, 1038420 records, limit category is 100.
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: 0 records to be deleted
using 0.00 MBytes of temporary memory, 0 records skipped due to memory
limit.
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Deleted 0 records (0
already gone) types
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: It took 0.00 secs, 0
transactions (OK)
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Usage: 81.32% (428077056 /
526385152)
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Cache analyzed in 1.41
secs, 1038420 records, limit category is 100.
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: 0 records to be deleted
using 0.00 MBytes of temporary memory, 0 records skipped due to memory
limit.
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Deleted 0 records (0
already gone) types
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: It took 0.00 secs, 0
transactions (OK)
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Usage: 81.32% (428077056 /
526385152)
Jun 4 16:32:05 dns-cache-2 kres-cache-gc[548]: Cache analyzed in 1.41
secs, 1038421 records, limit category is 100.
Jun 4 16:32:32 dns-cache-2 kresd[672]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[672]: [cache] clearing error, falling back
Jun 4 16:32:32 dns-cache-2 kresd[672]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing error, falling back
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing failed to get
./.cachelock; retry later
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing error, falling back
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing failed to get
./.cachelock; retry later
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing error, falling back
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing failed to get
./.cachelock; retry later
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
…
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)1.service: Main process
exited, code=killed, status=11/SEGV
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing failed to get
./.cachelock; retry later
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing error, falling back
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing failed to get
./.cachelock; retry later
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
…
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)1.service: Failed with result
'signal'.
…
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)2.service: Main process
exited, code=killed, status=11/SEGV
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing failed to get
./.cachelock; retry later
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing error, falling back
…
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)2.service: Failed with result
'signal'.
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -17
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing error, falling back
…
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] MDB_BAD_TXN, probably
overfull
Jun 4 16:32:32 dns-cache-2 kresd[675]: [cache] clearing because overfull,
ret = -28
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)1.service: Service
RestartSec=100ms expired, scheduling restart.
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)1.service: Scheduled restart
job, restart counter is at 1.
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)2.service: Service
RestartSec=100ms expired, scheduling restart.
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)2.service: Scheduled restart
job, restart counter is at 1.
Jun 4 16:32:32 dns-cache-2 kresd[30052]: [system] error while loading
config: /usr/lib/knot-resolver/sandbox.lua:400: 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')
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)1.service: Main process
exited, code=exited, status=1/FAILURE
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)1.service: Failed with result
'exit-code'.
Jun 4 16:32:32 dns-cache-2 kresd[30051]: [system] error while loading
config: /usr/lib/knot-resolver/sandbox.lua:400: 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')
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)2.service: Main process
exited, code=exited, status=1/FAILURE
Jun 4 16:32:32 dns-cache-2 systemd[1]: kresd(a)2.service: Failed with result
'exit-code'.
Hello all,
I am trying to configure my local PC (always on server), to serve DNS
resolving all other computers in my LAN. I installed and enabled the
service. I've attempted configuration. Knot-resolver correctly resolves
DNS querier on localhost machine, but fails to reply to queries from
other LAN machines.
Can someone please share configuration which I should use to have LAN
resolving?
I've tried various net.listen(), net() in config file, to no avail. I've
studied this page
https://knot-resolver.readthedocs.io/en/stable/daemon-bindings-net_server.h…
but I have no idea which option I should put in config to enable my
server PC (192.168.1.44) to allow all PCs in LAN (192.168.1.xxx) to use
knot-resolver.
I'd appreciate if someone with knowledge would help a newbie like me.
Thank you!
pioruns
Hi all,
Is there a way to reload dynamically the knot-resolver configuration
without stopping knot-resolver ?
e.g I have to add this in the config file
extraTrees = policy.todnames({'foo.example.net'})
policy.add(policy.suffix(policy.FLAGS({'NO_CACHE'}), extraTrees))
policy.add(policy.suffix(policy.FORWARD({'192.168.0.15'}), extraTrees))
Is there a sort of CLI command to take it in account ?
Regards
______________________________
*Pierrick CHOVELON I *Ingénieur système
*Advanced Software I IT*
+33 4 77 43 27 05
pierrick.chovelon(a)savoye.com
*SAVOYE - 8, rue de la Richelandière - 42100 - Saint-Etienne - France*
*Savoye recrute ! <https://careers.savoye.com/#!/fr/index> - *www.savoye.com
Dear Knot Resolver users,
Knot Resolver 5.1.0 has been released!
We also have two important announcements:
1) Ubuntu and Debian repositories
Ubuntu and Debian users have to manually set up the upstream repository
once again by following the instructions at:
https://www.knot-resolver.cz/download/
We apologize for the inconvenience, tests are now in place to prevent
this from happening again.
2) The upcoming major version will contain reworked
hints/policy/prefill/rebinding/view modules and related functionalities.
Please participate in the following survey to ensure we do not forget
about your particular use-case:
https://www.knot-resolver.cz/survey/
It will help us to improve Knot Resolver. Thank you!
Our upstream repositories now also provide packages for CentOS 8,
Ubuntu 20.04 and Fedora 32.
And finally, the release notes for version 5.1.0:
Improvements
------------
- cache garbage collector: reduce filesystem operations when idle (!946)
- policy.DEBUG_ALWAYS and policy.DEBUG_IF for limited verbose logging
(!957)
- daemon: improve TCP query latency under heavy TCP load (!968)
- add policy.ANSWER action (!964, #192)
- policy.rpz support fake A/AAAA (!964, #194)
Bugfixes
--------
- cache: missing filesystem support for pre-allocation is no longer
fatal (#549)
- lua: policy.rpz() no longer watches the file when watch is set to
false (!954)
- fix a strict aliasing problem that might've lead to "miscompilation"
(!962)
- fix handling of DNAMEs, especially signed ones (#234, !965)
- lua resolve(): correctly include EDNS0 in the virtual packet (!963)
Custom modules might have been confused by that.
- do not leak bogus data into SERVFAIL answers (#396)
- improve random Lua number generator initialization (!979)
- cache: fix CNAME caching when validation is disabled (#472, !974)
- cache: fix CNAME caching in policy.STUB mode (!974)
- prefill: fix crash caused by race condition with resolver startup
(!983)
- webmgmt: use javascript scheme detection for websockets' protocol
(#546)
- daf module: fix del(), deny(), drop(), tc(), pass() functions
(#553, !966)
- policy and daf modules: expose initial query when evaluating
postrules (#556)
- cache: fix some cases of caching answers over 4 KiB (!976)
- docs: support sphinx 3.0.0+ (!978)
Incompatible changes
--------------------
- minor changes in module API; see upgrading guide:
https://knot-resolver.readthedocs.io/en/stable/upgrading.html
Full changelog:
https://gitlab.labs.nic.cz/knot/knot-resolver/raw/v5.1.0/NEWS
Sources:
https://secure.nic.cz/files/knot-resolver/knot-resolver-5.1.0.tar.xz
GPG signature:
https://secure.nic.cz/files/knot-resolver/knot-resolver-5.1.0.tar.xz.asc
Documentation:
https://knot-resolver.readthedocs.io/en/v5.1.0/
--
Tomas Krizek
PGP: 4A8B A48C 2AED 933B D495 C509 A1FB A5F7 EF8C 4869
