[ClusterLabs] Antw: SLES 11 SP4 & csync2

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Tue Aug 25 04:25:40 EDT 2015

>>> Jorge Fábregas <jorge.fabregas at gmail.com> schrieb am 22.08.2015 um 07:12
Nachricht <55D804A4.50503 at gmail.com>:
> Hi everyone,
> I'm trying out SLES 11 SP4 with the "High-Availability Extension" on two
> virtual machines.  I want to keep things simple & I have a question
> regarding the csync2 tool from SUSE.  Considering that:
> - I'll have just two nodes
> - I'll be using corosync without encryption (no authkey file)
> - I won't be using DRBD
> Do I really need the csync2 service? In order to bootstrap the cluster

IMHO it's handy. We always change the same node (if up) and sync from there.
The advantage is when you add more nodes (or files to sync). You can live
without, but be disciplined when making changes.

> I'll configure corosync.conf on the first node & then I'll manually
> transfer it to the 2nd node (and modify accordingly).  That's the only
> thing I can think of that I need to take care of (file-wise).  After
> that I'll use the crm shell & the Hawk web console.
> I guess my question is: does the crm shell or Hawk need the csync2 tool
> to function properly? Is there anything an admin could do through them
> that might require a file to be synced afterwards?
> Thanks!
> -- 
> Jorge
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