Oh, I see. [root@r3u20 ~]# nslookup -query=A r3u21.devcluster.net Server: 127.0.0.1 Address: 127.0.0.1#53
Name: r3u21.devcluster.net Address: 172.30.193.21 [root@r3u20 ~]# nslookup -query=AAAA r3u21.devcluster.net Server: 127.0.0.1 Address: 127.0.0.1#53 ** server can't find r3u21.devcluster.net: REFUSED Nslookup by default is doing an A, then a AAAA query, and dnsmasq is refusing the AAAA. If you don't want that, then -query=A. [root@r3u20 ~]# nslookup r3u21 Server: 127.0.0.1 Address: 127.0.0.1#53 Name: r3u21.devcluster.net Address: 172.30.193.21 ** server can't find r3u21.devcluster.net: REFUSED [root@r3u20 ~]# fg vim /etc/hosts [root@r3u20 ~]# systemctl restart dnsmasq [root@r3u20 ~]# nslookup r3u21 Server: 127.0.0.1 Address: 127.0.0.1#53 Name: r3u21.devcluster.net Address: 172.30.193.21 Name: r3u21.devcluster.net Address: fdec:46f7:9b7f:3001::3:21 ________________________________ From: Vinícius Ferrão <fer...@versatushpc.com.br> Sent: Tuesday, October 22, 2024 9:33 AM To: Jarrod Johnson <jjohns...@lenovo.com> Cc: xCAT Users Mailing list <xcat-user@lists.sourceforge.net> Subject: Re: [External] [xcat-user] Confluent dnsmasq not resolving local names Hi Jarrod, [root@mmgt01 ~]# grep cn003 /etc/hosts 172.28.0.3 cn003 cn003.cluster.domain.com 172.27.0.3 cn003-ib0 cn003-ib0.cluster.domain.com On 22 Oct 2024, at 08:44, Jarrod Johnson <jjohns...@lenovo.com> wrote: What does: grep cn003 /etc/hosts Show? ________________________________ From: Vinícius Ferrão via xCAT-user <xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net>> Sent: Monday, October 21, 2024 11:40 PM To: xCAT Users Mailing list <xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net>> Cc: Vinícius Ferrão <fer...@versatushpc.com.br<mailto:fer...@versatushpc.com.br>> Subject: [External] [xcat-user] Confluent dnsmasq not resolving local names Hello, I'm running Confluent com a cluster and it seems that dnsmasq does not work as expected: [root@mmgt01 etc]# !nslookup nslookup cn003 Server: 127.0.0.1 Address: 127.0.0.1#53 Name: cn003.cluster.domain.com<http://cn003.cluster.domain.com/> Address: 172.28.0.3 ** server can't find cn003.cluster.domain.com<http://cn003.cluster.domain.com/>: REFUSED Any ideia why it get's refused but resolves? This issue many times slows down name resolution. Here's /var/log/messages: Oct 22 00:29:02 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:29:02 mmgt01 dnsmasq[400928]: ignoring nameserver 172.28.253.1 - local interface Oct 22 00:29:02 mmgt01 dnsmasq[400928]: read /etc/hosts - 181 addresses Oct 22 00:32:14 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:32:14 mmgt01 dnsmasq[400928]: ignoring nameserver 172.28.253.1 - local interface Oct 22 00:32:15 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:32:15 mmgt01 dnsmasq[400928]: ignoring nameserver 172.28.253.1 - local interface Oct 22 00:32:53 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:32:53 mmgt01 dnsmasq[400928]: ignoring nameserver 172.28.253.1 - local interface Oct 22 00:32:53 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:32:53 mmgt01 dnsmasq[400928]: ignoring nameserver 172.28.253.1 - local interface Oct 22 00:34:32 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:34:32 mmgt01 dnsmasq[400928]: ignoring nameserver 127.0.0.1 - local interface Oct 22 00:34:32 mmgt01 dnsmasq[400928]: reading /etc/resolv.conf Oct 22 00:34:32 mmgt01 dnsmasq[400928]: ignoring nameserver 127.0.0.1 - local interface Oct 22 00:34:38 mmgt01 dnsmasq[400928]: exiting on receipt of SIGTERM Oct 22 00:34:38 mmgt01 systemd[1]: dnsmasq.service: Succeeded. Oct 22 00:34:38 mmgt01 dnsmasq[405484]: started, version 2.79 cachesize 150 Oct 22 00:34:38 mmgt01 dnsmasq[405484]: compile time options: IPv6 GNU-getopt DBus no-i18n IDN2 DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth DNSSEC loop-detect inotify Oct 22 00:34:38 mmgt01 dnsmasq[405484]: reading /etc/resolv.conf Oct 22 00:34:38 mmgt01 dnsmasq[405484]: ignoring nameserver 127.0.0.1 - local interface Oct 22 00:34:38 mmgt01 dnsmasq[405484]: read /etc/hosts - 181 addresses And here's /etc/resolv.conf: [root@mmgt01 etc]# cat /etc/resolv.conf # Generated by NetworkManager search cluster.domain.com<http://cluster.domain.com/> nameserver 127.0.0.1 dnsmasq settings is default by confluent instructions: [root@mmgt01 etc]# cat /etc/dnsmasq.conf | grep -v \# |uniq user=dnsmasq group=dnsmasq conf-dir=/etc/dnsmasq.d,.rpmnew,.rpmsave,.rpmorig mmgt01 is the management node. Ideas? Regards, _______________________________________________ xCAT-user mailing list xCAT-user@lists.sourceforge.net<mailto:xCAT-user@lists.sourceforge.net> https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Fxcat-user&data=05%7C02%7Cjjohnson2%40lenovo.com%7C338146a50cbb47ad641708dcf24d8e19%7C5c7d0b28bdf8410caa934df372b16203%7C0%7C0%7C638651662158200105%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=3OIWGoiWH73quH9qh5YkrmqmiHPvNgA5k%2FLOWBBEVfY%3D&reserved=0<https://lists.sourceforge.net/lists/listinfo/xcat-user>
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