Bug 44535 – check_essential_samba4_dns_records fails to find DNS records

Bug 44535 - check_essential_samba4_dns_records fails to find DNS records


Summary:	check_essential_samba4_dns_records fails to find DNS records

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Samba4
Version:	UCS 4.2
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS 4.2-0-errata
Assigned To:	Arvid Requate
QA Contact:	Felix Botner

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2017-05-04 13:44 CEST by Michael Grandjean
Modified:	2017-06-15 17:58 CEST (History)
CC List:	3 users (show)

See Also:
What kind of report is it?:	Bug Report
What type of bug is this?:	4: Minor Usability: Impairs usability in secondary scenarios
Who will be affected by this bug?:	3: Will affect average number of installed domains
How will those affected feel about the bug?:	2: A Pain – users won’t like this once they notice it
User Pain:	0.137
Enterprise Customer affected?:	Yes
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number:	2017050421000305, 2017042621000454
Bug group (optional):	External feedback
Max CVSS v3 score:

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Description Michael Grandjean

2017-05-04 13:44:23 CEST

# univention-app info
UCS: 4.2-0 errata10
App Center compatibility: 4
Installed: kde=4 samba4=4.6
Upgradable:


# /usr/share/univention-samba4/scripts/check_essential_samba4_dns_records.sh
Host gc._msdcs not found: 3(NXDOMAIN)
Host _gc._tcp not found: 3(NXDOMAIN)
Host _ldap._tcp.gc._msdcs not found: 3(NXDOMAIN)
Host _ldap._tcp not found: 3(NXDOMAIN)
Host _ldap._tcp.dc._msdcs not found: 3(NXDOMAIN)
Host _ldap._tcp.pdc._msdcs not found: 3(NXDOMAIN)
Host _ldap._tcp.7d1bc945-8e72-49f9-a353-7e294221532b.domains._msdcs not found: 3(NXDOMAIN)
Host _kerberos._tcp.dc._msdcs not found: 3(NXDOMAIN)
Host _kerberos._tcp not found: 3(NXDOMAIN)
Host _kerberos._udp not found: 3(NXDOMAIN)
Host _kpasswd._tcp not found: 3(NXDOMAIN)
Host _kpasswd._udp not found: 3(NXDOMAIN)
Located DC 'ucs-7125' in site 'Default-First-Site-Name'
Host 216d4ac8-0c1e-45e7-aac0-b42eed7cca41._msdcs not found: 3(NXDOMAIN)
## Records for site Default-First-Site-Name:
Host _ldap._tcp.Default-First-Site-Name._sites not found: 3(NXDOMAIN)
Host _ldap._tcp.Default-First-Site-Name._sites.dc._msdcs not found: 3(NXDOMAIN)
Host _kerberos._tcp.Default-First-Site-Name._sites not found: 3(NXDOMAIN)
Host _kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs not found: 3(NXDOMAIN)
## Optional GC Records for site Default-First-Site-Name:
Host _gc._tcp.Default-First-Site-Name._sites not found: 3(NXDOMAIN)
Host _ldap._tcp.Default-First-Site-Name._sites.gc._msdcs not found: 3(NXDOMAIN)
_kerberos.intranet.example.org descriptive text "INTRANET.EXAMPLE.ORG"


DNS works, only the shell script fails to find the records.

Seems to be an issue of Relative Domain Name vs FQDN:

root@ucs-7125:~# host gc._msdcs
Host gc._msdcs not found: 3(NXDOMAIN)

root@ucs-7125:~# host gc._msdcs.$(ucr get domainname)
gc._msdcs.intranet.example.org has address 192.168.122.227

Comment 1 Christina Scheinig

2017-05-04 13:58:56 CEST

I think I saw this output yesterday in a customer environment but it was not a problem, just weird

Comment 2 Arvid Requate

2017-05-04 15:37:53 CEST

Yes, I saw this change of behavior of "host" during UCS 4.2-0 development. No clue why it doesn't use the search domain configured in resolv.conf any longer.

Fixed in the script.

Advisory: univention-samba4.yaml

Comment 3 Felix Botner

2017-05-08 15:58:42 CEST

OK - check_essential_samba4_dns_records.sh
OK - YAML

Comment 4 Janek Walkenhorst

2017-06-15 17:58:14 CEST

<http://errata.software-univention.de/ucs/4.2/42.html>