Bug 43854 – UCS 4.2: short/unqualified SRV dns queries don't work any more

Bug 43854 - UCS 4.2: short/unqualified SRV dns queries don't work any more


Summary:	UCS 4.2: short/unqualified SRV dns queries don't work any more

Status:	RESOLVED WONTFIX

Product:	UCS
Classification:	Unclassified
Component:	DNS
Version:	UCS 4.2
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	---
Assigned To:	UCS maintainers
QA Contact:	UCS maintainers

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Blocks:
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Reported:	2017-03-14 22:49 CET by Arvid Requate
Modified:	2020-07-03 20:51 CEST (History)
CC List:	1 user (show)

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What kind of report is it?:	Development Internal
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Description Arvid Requate

2017-03-14 22:49:13 CET

UCS 4.1:

root@master10:~# dig @localhost _kerberos._tcp SRV +search +short
0 100 88 master10.ar41i1.qa.

root@master10:~# host -t srv _kerberos._tcp
_kerberos._tcp.ar41i1.qa has SRV record 0 100 88 master10.ar41i1.qa.


UCS 4.2:

root@master10:~# dig @localhost _kerberos._tcp SRV +search +short

root@master100:~# host -t srv _kerberos._tcp
Host _kerberos._tcp not found: 3(NXDOMAIN)

root@master100:~# host -t srv _kerberos._tcp.$(dnsdomainname)
_kerberos._tcp.ar42ms2xi1.qa has SRV record 0 100 88 backup101.ar42ms2xi1.qa.
_kerberos._tcp.ar42ms2xi1.qa has SRV record 0 100 88 master100.ar42ms2xi1.qa.


I tested with dns/backend=samba4. Adding "search" to resolv.conf doesn't help.

Comment 1 Arvid Requate

2017-03-14 23:10:30 CET

Same with dns/backend=ldap

Comment 2 Arvid Requate

2017-03-15 13:03:10 CET

It works for normal host records, just not e.g. for SRV records.

apt-get install \
  bind9-host=1:9.8.4.dfsg.P1-6+nmu2.124.201610152034 \
  dnsutils=1:9.8.4.dfsg.P1-6+nmu2.124.201610152034

and it works again. No clue why yet.

Comment 3 Stefan Gohmann

2017-03-17 20:56:24 CET

I don't think it is a blocker for the release. Please change the target milestone, if someone disagrees.

Comment 4 Stefan Gohmann

2017-06-29 07:32:54 CEST

It seems to be a problem on our member servers as well. At least it is shown as problem in Jenkins:

I've adjusted the system check test:

r80603:
 * dns/forward_and_reverse_dns_myself.sh: Skip short dsn query on member server (Bug #43854)

Comment 5 Stefan Gohmann

2017-09-08 20:10:07 CEST

fc837e74
by Stefan Gohmann at 2017-09-08T20:07:53+02:00
00_checks/81_diagnostic_checks.py: skip 01_ssh_connection (Bug #43854)

Comment 6 Ingo Steuwer

2020-07-03 20:51:35 CEST

This issue has been filed against UCS 4.2.

UCS 4.2 is out of maintenance and many UCS components have changed in later releases. Thus, this issue is now being closed.

If this issue still occurs in newer UCS versions, please use "Clone this bug" or reopen it and update the UCS version. In this case please provide detailed information on how this issue is affecting you.