Hi Jörg,

normally the hosts file should be first accessed before the DNS server
will be asked.
I saw a few programs like yum which show IPv6 addresses if they have
problem to access the DNS service.
I think CentOS 7.2 has a bug with DNS and IPv6.

My resolf.conf:

search cac.local
nameserver 192.168.76.40
nameserver 192.168.76.41

I disabled IPv6 like described on this page

https://wiki.centos.org/FAQ/CentOS7

with adding the following lines to /etc/sysctl.conf:

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1

Regards

Stefan


Am 02.09.2016 um 13:28 schrieb Jörg Steffens:

> Hi,
>
> yes, it certainly looks like a dns problem. Your configuration looks
> sane. If I'm not mistaken, it can still relate to your /etc/resolv.conf.
>
> You can start bconsole with debug:
>
> bconsole -d 200 -dt
>
> Maybe this gives some insight.
>
> Jörg
>
> Am 01.09.2016 um 23:47 schrieb Stefan Klatt:
>> Hi Jörg,
>>
>> I tried a view things... and found that bconsole needs only a long time
>> to connect to the director if I use the name galaxy.cac.local (
>> 192.168.76.2). If I use localhost or one of both IP addresses
>> (192.168.76.2 or 127.0.0.1) it's fast. I know this seems to be a DNS
>> problem, but why work all other programs like ping and bareos 15.2
>> without any problem? Telnet opens immediately a session to 
>> galaxy.cac.local:9101 too.
>> This happens on two server.
>>
>> Probably there is glitch in my configuration and I don't see it.
>>
>> Here my configuration:
>>
>> CentOS 7.2 actual patchlevel
>> Bareos 16.3.1 (01 July 2016)
>> IPv6 disabled
>> Firewall disabled
>>
>> hosts:
>> 192.168.76.2    galaxy.cac.local galaxy
>> 127.0.0.1   localhost localhost.localdomain localhost4
>> localhost4.localdomain4
>> #::1         localhost localhost.localdomain localhost6
>> localhost6.localdomain6
>>
>> Interfaces:
>>
>> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>>         inet 192.168.76.2  netmask 255.255.255.0  broadcast 192.168.76.255
>>         ether 00:50:56:9c:c7:75  txqueuelen 1000  (Ethernet)
>>         RX packets 1348739  bytes 977232768 (931.9 MiB)
>>         RX errors 0  dropped 17  overruns 0  frame 0
>>         TX packets 3443570  bytes 4329168020 (4.0 GiB)
>>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>>
>> lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
>>         inet 127.0.0.1  netmask 255.0.0.0
>>         loop  txqueuelen 0  (Lokale Schleife)
>>         RX packets 113353779  bytes 2758091387290 (2.5 TiB)
>>         RX errors 0  dropped 0  overruns 0  frame 0
>>         TX packets 113353779  bytes 2758091387290 (2.5 TiB)
>>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>>
>>
>> bconsole.conf
>>
>> Director {
>>   Name = galaxy-dir
>>   DIRport = 9101
>>   address = galaxy.cac.local
>> #  address = 192.168.76.2
>>   Password = "XXXXXccccVVVV"
>> }
>>
>> Regards
>>
>> Stefan
>>
>>
>> Am 30.08.2016 um 18:40 schrieb Jörg Steffens:
>>
>>> Am 29.08.2016 um 23:46 schrieb Stefan Klatt:
>>>> Hi Jörg,
>>>>
>>>> I use bareos 16.3.1 (01Jul16) on two server and have a little problem
>>>> with bconsole. It needs a long time to connect to the director on the
>>>> same machine.
>>>> With 15.2.2 this was really fast.
>>> I assume, it might be a DNS lookup problem.
>>> Take a look into your bconsole.conf.
>>> Maybe change the address directive to 127.0.0.1.
>>>
>>> Jörg
>> -- *CaC, Computer and Communication* Inhaber Stefan Klatt End-2-End
>> Senior Network Consultant Triftstrasse 9 60528 Frankfurt Germany
>> USt-IdNr.: DE260461592 Tel.: +49-(0)172-6807809 Tel.:
>> +49-(0)69-67808-900 Fax: +49-(0)69-67808-837 Email:
>> [email protected] Profil: http://www.cac-netzwerk.de/profil
>>
>>
-- *CaC, Computer and Communication* Inhaber Stefan Klatt End-2-End
Senior Network Consultant Triftstrasse 9 60528 Frankfurt Germany
USt-IdNr.: DE260461592 Tel.: +49-(0)172-6807809 Tel.:
+49-(0)69-67808-900 Fax: +49-(0)69-67808-837 Email:
[email protected] Profil: http://www.cac-netzwerk.de/profil


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