knot-dns-users September 2023

knot-dns-users@lists.nic.cz

2 participants
4 discussions

by Erik P. Ostlyngen

Hi, I'm evaluating the Knot DNS server as a DNSSEC signer engine. I'm currently running version 3.2.6 together with SoftHSM version 2.6.1 on an Ubuntu 20.04 linux server. Now I have a problem with keymgr crashing with a segmentation fault and dumping core. This happens with some of the commands of keymgr, but not all (the command keymgr -l runs fine). The commands 'keymgr trondheim.no list' produces the correct output, but then crashes. /var/log/apport.log indicates that a dbus session is missing in the environment: ERROR: apport (pid 811054) Tue Jun 13 07:56:00 2023: called for pid 811052, signal 11, core limit 0, dump mode 2 ERROR: apport (pid 811054) Tue Jun 13 07:56:00 2023: not creating core for pid with dump mode of 2 ERROR: apport (pid 811054) Tue Jun 13 07:56:00 2023: executable: /usr/sbin/keymgr (command line "keymgr trondheim.no list") ERROR: apport (pid 811054) Tue Jun 13 07:56:00 2023: is_closing_session(): no DBUS_SESSION_BUS_ADDRESS in environment ERROR: apport (pid 811054) Tue Jun 13 07:56:00 2023: apport: report /var/crash/_usr_sbin_keymgr.0.crash already exists and unseen, skipping to avoid disk usage DoS Running the command as 'dbus-run-session keymgr trondheim.no list' gives: ERROR: apport (pid 811174) Tue Jun 13 08:01:04 2023: called for pid 811173, signal 11, core limit 0, dump mode 2 ERROR: apport (pid 811174) Tue Jun 13 08:01:04 2023: not creating core for pid with dump mode of 2 ERROR: apport (pid 811174) Tue Jun 13 08:01:04 2023: executable: /usr/sbin/keymgr (command line "keymgr trondheim.no list") ERROR: apport (pid 811174) Tue Jun 13 08:01:04 2023: is_closing_session(): Could not determine DBUS socket. ERROR: apport (pid 811174) Tue Jun 13 08:01:04 2023: apport: report /var/crash/_usr_sbin_keymgr.0.crash already exists and unseen, skipping to avoid disk usage DoS I've tried to run the command as root and as the knot user, and I have to admit that I'm not very familiar with how to manage dbus sessions. I want to run the keymgr command from cron or from some other system shell, for periodically monitoring the keys. However, I'm unsure why keymgr wants to communicate on the dbus. Is it possible to disable this? Regards, Erik Østlyngen

2 years

DDNS not working as expected

by JeeF Software spol. s r.o.

Hi Knot-DNS Support, I'm trying simple DDNS scenario (no keys, no DNSSEC) with failing result. Knot-DNS is installed from docker image. Could you let me know what is the issue (NOAUTH) and how can I solve it or if this scenario is not supported what exactly is required by DDNS? ------------------------------------------- knot.conf: server: rundir: "/rundir" user: knot:knot automatic-acl: on listen: 0.0.0.0@53 log: - target: stdout server: debug zone: debug any: debug database: storage: "/storage" acl: - id: acl_update action: update - id: acl_transfer action: transfer template: - id: default storage: "/storage" file: "%s.zone" zone: # Primary zone - domain: example.com acl: [acl_update, acl_transfer] ---------------------------------------------- update: server 10.2.0.88 zone exmaple.com update add _acme-challenge.example.com. 300 TXT "aaaaa" send -------------------------------------------- knsupdate -d < update ;; DEBUG: cmd_server: lp='10.2.0.88' ;; DEBUG: parse_host: parsed addr: 10.2.0.88 ;; DEBUG: cmd_zone: lp='exmaple.com' ;; DEBUG: cmd_update: lp='add _acme-challenge.example.com. 300 TXT "aaaaa"' ;; DEBUG: cmd_add: lp='_acme-challenge.example.com. 300 TXT "aaaaa"' ;; DEBUG: cmd_send: lp='' ;; DEBUG: sending packet ;; DEBUG: pkt_sendrecv: send_msg = 3 ;; DEBUG: pkt_sendrecv: receive_msg = 29 ;; ->>HEADER<<- opcode: UPDATE; status: NOTAUTH; id: 27029 ;; Flags: qr; ZONE: 1; PREREQ: 0; UPDATE: 0; ADDITIONAL: 0 ;; ZONE SECTION: ;; exmaple.com. IN SOA ;; ERROR: update failed with error 'NOTAUTH' ;; DEBUG: operation 'send' failed (failed) on line 'send' ;; DEBUG: srv_info_free: null parameter ----------------------------------------- knotd log 2023-09-05T17:16:35+0000 info: Knot DNS 3.3.0 starting 2023-09-05T17:16:35+0000 info: loaded configuration file '/config/knot.conf', mapsize 500 MiB 2023-09-05T17:16:35+0000 info: using UDP reuseport, incoming TCP Fast Open 2023-09-05T17:16:35+0000 info: binding to interface 0.0.0.0@53 2023-09-05T17:16:35+0000 info: changing GID to 8521 2023-09-05T17:16:35+0000 info: changing UID to 9396 2023-09-05T17:16:35+0000 info: loading 1 zones 2023-09-05T17:16:35+0000 info: [example.com.] zone will be loaded 2023-09-05T17:16:35+0000 info: starting server 2023-09-05T17:16:35+0000 info: [example.com.] zone file parsed, serial 2010111213 2023-09-05T17:16:35+0000 info: [example.com.] loaded, serial none -> 2010111213, 465 bytes 2023-09-05T17:16:35+0000 info: control, binding to '/rundir/knot.sock' 2023-09-05T17:16:35+0000 info: server started in the foreground, PID 8 2023-09-05T17:18:03+0000 info: [example.com.] control, received command 'zone-status' 2023-09-05T17:18:40+0000 info: [example.com.] control, received command 'zone-sign' 2023-09-05T17:18:40+0000 error: [example.com.] control, error (operation not supported) 2023-09-05T17:18:52+0000 info: [example.com.] control, received command 'zone-read' 2023-09-05T17:18:56+0000 info: [example.com.] control, received command 'zone-read' 2023-09-05T17:18:56+0000 error: [example.com.] control, error (no such node in zone found) 2023-09-05T17:19:00+0000 info: [example.com.] control, received command 'zone-read' 2023-09-05T17:19:45+0000 info: [example.com.] control, received command 'zone-set' 2023-09-05T17:19:45+0000 error: [example.com.] control, error (no active transaction) 2023-09-05T17:22:57+0000 info: [example.com.] control, received command 'zone-set' 2023-09-05T17:22:57+0000 error: [example.com.] control, error (no active transaction) 2023-09-05T17:23:49+0000 info: [example.com.] control, received command 'zone-begin' 2023-09-05T17:23:54+0000 info: [example.com.] control, received command 'zone-set' 2023-09-05T17:24:02+0000 info: [example.com.] control, received command 'zone-commit' 2023-09-05T17:24:02+0000 info: [example.com.] zone file updated, serial 2010111213 -> 2010111214 btw. no info positive/negative regarding the DDNS -------------------------------------- example.com.zone example.com. 3600 SOA dns1.example.com. hostmaster.example.com. 2010111214 21600 3600 604800 86400 example.com. 3600 A 1.2.3.4 example.com. 3600 NS dns1.example.com. example.com. 3600 NS dns2.example.com. example.com. 3600 MX 10 mail.example.com. dns1.example.com. 3600 A 192.0.2.1 dns1.example.com. 3600 AAAA 2001:db8::1 dns2.example.com. 3600 A 192.0.2.2 dns2.example.com. 3600 AAAA 2001:db8::2 mail.example.com. 3600 A 192.0.2.3 mail.example.com. 3600 AAAA 2001:db8::3 Thanks. Best Regards, JohnF

2 years

GUI Frontends for Knot DNS Server

by Turritopsis Dohrnii Teo En Ming

Subject: GUI Frontends for Knot DNS Server Good day from Singapore, Are there any GUI frontends for configuring Knot DNS Server? I prefer GUI configuration interface. It is more efficient than command line interface (CLI). Thank you. Regards, Mr. Turritopsis Dohrnii Teo En Ming Targeted Individual in Singapore Blogs: https://tdtemcerts.blogspot.com https://tdtemcerts.wordpress.com

2 years

Knot DNS 3.3.1 and 3.2.10 releases

by Daniel Salzman

Hello Knot DNS users, CZ.NIC has released Knot DNS 3.3.1 and 3.2.10! These versions fix several bugs. Upgrade is recommended. Changelogs: https://gitlab.labs.nic.cz/knot/knot-dns/raw/v3.3.1/NEWS https://gitlab.labs.nic.cz/knot/knot-dns/raw/v3.2.10/NEWS Download: https://www.knot-dns.cz/download/ Documentation: https://www.knot-dns.cz/documentation/ Support: https://www.knot-dns.cz/support/ Regards, Daniel

2 years, 5 months

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knot-dns-users September 2023