[DRBD-user] DRBD w/ Postfix

Alan Robertson alanr at unix.sh
Tue Jul 26 02:36:52 CEST 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Curtis Vaughan wrote:
> I plan to put DRBD w/Heartbeat on a Debian (sarge) Postfix server w/ 
> Courier-imap.
> My question is this. Obviously one directory structure that I will be  
> synchronizing (making a drbd block device) would be /home
> However, although I would like to be able to synchronize all users  and 
> their passwords, and all postfix settings, that would mean  making /etc 
> also a drbd block device. But that's not possible now is  it - or not 
> advisable as I would be synchronizing files that are box  specific 
> (/etc/fstab, /etc/network/interfaces..., /etc/hostname, etc.).
> An obvious solution would be an ldap server - but that is not an  option 
> for certain reasons. So, is there a way to accomplish this?
> Also, have I left out any other directories that I probably should be  
> synchronizing but just didn't consider?

What I do is make symlinks.  This is described in my article on DRBD and 
heartbeat here http://www.linux-mag.com/2003-11/availability_01.html (it 
talks about an old version of DRBD but the principles are the same).

Sean Reifschneider wrote a tool called DRBDlinks to do something similar 
in a little more fancy way.  You can read about it here:

     Alan Robertson <alanr at unix.sh>

"Openness is the foundation and preservative of friendship...  Let me 
claim from you at all times your undisguised opinions." - William 

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