On Fri, Dec 4, 2020 at 11:22 AM Adam Xu <adam_xu@adagene.com.cn> wrote:
Hi ovirt
Recently, my samba internal dns has been getting a lot of errors, like:
[2020/12/02 15:24:31.484073, 1] ../../source4/dns_server/dns_query.c:1141(dns_server_process_query_got_auth) dns_server_process_query_got_auth: Failed to add SOA record: WERR_DNS_ERROR_RCODE_FORMAT_ERROR
I found that my ovirt nodes was sending a lot of strange requests, I use tcpdump and got some like:
tcpdump -i ovirtmgmt udp port 53
17:00:23.875038 IP ovirt1.adagene.cn.53862 > dc1.mydomain.com.domain: 35727+ [1au] NS? . (40)
17:00:24.436466 IP 192.168.49.195.domain > ovirt1.mydomain.com.33625: 8887 FormErr-$ 0/0/1 (40)
about one request in a second.
And I noticed that some nodes which version is 4.4.2 did't send dns requests like above. therefore no error occured.
Were there any recent changes to ovirt node that caused these errors?
Any chance you can try to provide some more information? Perhaps a tcpdump dump (something like 'tcpdump -i any -w /root/dump1', or '-i NIC' if you know which NIC, perhaps also 'port 53' if it's just that)? From both hosts and the dns server? Perhaps /var/log/vdsm/* and /var/log/ovirt-hosted-engine-ha/* from hosts? Thanks and best regards, -- Didi