[Samba] Clustered Samba: Every 24 hours "There are Currently No Logon Servers Available"

[erik bergsma]

Daniel,

thanks for your input! so i have to set this option "wins server =
some.external.wins.ip" on both nodes then, correct? (and the next step is
then to make the win server redundant aswell)

and do i also have make sure the nmbd processes will not start anymore (that
is configurable in /etc/conf.d/samba on gentoo) or do these processes take
care of the name registration etc. ?

Erik

2011/4/8 Daniel Müller <mueller at tropenklinik.de>

> Hi,
> in your ctdb-cluster you use the same netbios-name for both nodes!?
> As far as I know  wins, nmbd should not be active on both nodes. You should
> use an external wins.
>
>
>
> -----------------------------------------------
> EDV Daniel Müller
>
> Leitung EDV
> Tropenklinik Paul-Lechler-Krankenhaus
> Paul-Lechler-Str. 24
> 72076 Tübingen
>
> Tel.: 07071/206-463, Fax: 07071/206-499
> eMail: mueller at tropenklinik.de
> Internet: www.tropenklinik.de
> -----------------------------------------------
>
> -----Ursprüngliche Nachricht-----
> Von: samba-bounces at lists.samba.org [mailto:samba-bounces at lists.samba.org]
> Im
> Auftrag von erik bergsma
> Gesendet: Freitag, 8. April 2011 12:21
> An: samba at lists.samba.org
> Betreff: [Samba] Clustered Samba: Every 24 hours "There are Currently No
> Logon Servers Available"
>
> All,
>
> i have this very weird and annoying problem in my clustered setup: every
> ~24
> hours the vista clients cant login, or even unlock there screens anymore.
> The error they receive is "currently no logon services available"
> this is very odd, because i have 2 samba 3.5.8 servers available, running
> and configured to handle login requests.
>
> in the mean time the people that are logged in already can use shares etc,
> same for mac users. So my guess its a wins/nmbd/netbios issue; not being to
> resolve my domain name into an ip address
>
> it is a clustered (CTDB) setup with 2 nodes, based on gentoo, samba 3.5.8,
> ldap and glusterfs
> the setup is like this:
> 192.168.100.81 static maintenance ip of node0
> 192.168.100.82 static ip of node1
> 192.168.100.83 floating/ctdb ip of node1
> 192.168.100.84 floating/ctdb ip of node0
>
> node0 has domain master = no, preferred master = no, wins server =
> 192.168.100.82
> node1 had domain master = auto, preferred master = yes, wins support = yes
>
> in the 192.168.100 subnet there are
> - some other non samba gentoo machines
> - a windows 2k3 server for printing, no wins support installed, smbclient
> reports this is the master of another domain (used to have a gentoo & samba
> 3.0 master, but that is switched off now)
> - a windows 2k8 server used for pxe (is domain master of an AD domain, used
> only for the PXE setup, not using any recources of the other 2 domain, no
> wins support installed, no clients)
>
> in the 192.168.9.* to 192.168.14.* subnets there are ~60 windows vista/
> windows 7 clients all statically configured to use 192.168.100.83 and
> 192.168.100.84 as WINS server
>
> what i do to resolve this issue is:
> - turn of ctdb & samba on node0
> - reboot node0 (because samba deadlocks, other discussion)
> - start ctdb & samba on node0
>  - turn of ctdb & samba on node1
> - reboot node1 (because samba deadlocks, other discussion)
> - start ctdb & samba on node1
>
> only then the issue is resolved, and the clients can login again;
> just powering down node0 does not work, even in you restart nmbd on node1
> and the log file says its a master browser and domain master of all the
> ip's
> associated
>
> i hate doing the reboot thing again and again, because it screws up the
> Glusterfs replication, and is just dirty.
>
> in the past week i had this setting: node0: domain master = auto, preferred
> master = auto, i then saw sometimes that node1 and node0 arguing over who
> is
> the master of one of the 4 ip, otherwise the loglevel 1 files stay pretty
> clean. Ive now blocked all ingoing and outgoing traffic to and from ports
> 137,138,139 to the 2 windows machines, just to be safe (and also i have
> become a little desperate :( )
>
> the other thing that is weird that node0 starts 1 nmbd process, and node1
> starts 2 of them... but this may be by design.
>
> i have a hunch that i have some rogue wins server somewhere that likes to
> tell that he is the domain master of my domain, does this make sense? can i
> debug this?
> or does somebody have another suggestion how to resolve this issue?
>
> thanks in advance!
> Erik
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