[Csync2] cysnc2 vs linking hackery

[Michael Mansour]

Hi Rafiu,

> Hi all,
> 
> I've been reading about csync2 and want to find out whether it can 
> be recommended for use in DRBD+HA setup instead of the metadata 
> volume + FS links method. I've never liked the latter way of doing 
> it and if csync2 is an option it certainly would solve a heck of a 
> number of configuration problems for me.

I'm not sure I full understand your requirements but I currently use csync2 
in a DRBD+HA environment without any issues.

The clustering software I use is linuxha.net, which handles all the 
heartbeat, failover, drbd, etc while csync2 just synchronises config files 
between the machines.

Have been using this for well over a year now with no dramas.

Michael.

> I read in an ML post that csync2 is only recommended for slow 
> changing config files. How would that apply to metadata for services 
> like nfs , Samba/winbind etc. Could I use csync2 to replicate 
> /var/lib/nfs and /var/cache/samba for instance?
> 
> If csync2 is not the way to go, how about a cross between the 
> metadata volume and some other [d|i]notify based solution where 
> local changes (on active primary) are synced to the metadata volume 
> and then synced back to place (on passive secondary), controlled as 
> a heartbeat resource, when a failover occurs.
> 
> TIA
> 
> R.