[Samba] about samba failover

[L.P.H. van Belle]

im having it like this

Xen 6.2 servers with. 
DC1	( ntp/dns/ldap/dhcp ) ! dhcp can be in failover mode, but not with bind9_DLZ must be bind9_flate file.
DC2  	( ntp/dns/ldap/dhcp backup ) same install as above incase server 1 is down. data files ares synced. 
	  ntp1/2  dns1/2 and ldap1/2 are set as alias in dns. 

member1 CTDB setup
member2 CTDB setup
proxy1 and 2 with kerberos and ldap auth as fallback.  ( squidclamav icap anti-ads setup and proxy ssl with ssl-bump )
webserver with sso for webmail ( kerberos auth ) lan site / Wan site ldap auth with group control
email server im using zarafa , but on physical hardware, because of my database size 110Gb+ 

software used Debian wheezy on all servers.
sernet samba 4 for DC and Member servers.
Debian Samba 4 from backports for proxy servers ( and you need squid 3.3.x for kerberos and icap to work correctly ) 
webserver debian wheezy no samba ( sso setup ) 
example here : https://community.zarafa.com/pg/blog/read/18332/zarafa-outlook-amp-webaccess-sso-with-samba4
mail server zarafa 7.1.10 added in Samba AD, and transports/aliasses in AD, almost no postfix changed needed.
90% is done in ad, last 10% im working on..  
Push mail. 


In sort almost a MS SBS based on samba4 thanks to these great samba developers AND
all the people of the samba communitie who are helping everyone.  ;-) 


Greetz, 

Louis



>-----Oorspronkelijk bericht-----
>Van: me at electronico.nc [mailto:samba-bounces at lists.samba.org] 
>Namens me at electronico.nc
>Verzonden: donderdag 26 juni 2014 0:09
>Aan: samba at lists.samba.org
>Onderwerp: [Samba] about samba failover
>
>Hi all,
>
>As many of us, I'm trying to find a way to have a failover 
>solution for 
>a Samba domain.
>
>The actual choice has been (because of hardware cost) to have only 1 
>physical xen-based server (ubuntu 14.04) that do (dom0) :
>- DHCP server (LAN)
>- NTP server
>- firewall
>- proxy
>- DNS server
>Then 4 VMs running for:
>- Samba Domain controller
>- Samba Domain member (file server)
>- Apache2 server
>- email server
>
>As all eggs are in the same basket (French talking), I've setup a 2nd 
>xen-based server that uses DRBD/Pacemaker to provide the basic dom0 
>functions.
>
>Now it's time about Samba ...
>( I've read : https://wiki.samba.org/index.php/Clustered_Samba )
> From other readings, it seems that GlusterFS is not actually a valid 
>solution (permissions troubles from Windows side).
>I was wondering if setting up Samba VMs that would use a RAID1 DRBD 
>network (RAID1 between xen-host1 and xen-host2) filesystem would be an 
>acceptable solution.
>
>Thanks in advance for your thoughts.
>
>Nicolas
>
>
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