Re: [Xen-users] Configuring Xen + DRBD + Corosync + Pacemaker

[Felipe Gutierrez <felipe.o.gutierrez@xxxxxxxxx>]

Hi Ciro, thanks for reply,

I am almos finishing this configuration and I don't think is a good idea to learn other tecnology, specially because I am since 2 weeks working with these.

At the moment I am struggling with this configuration of pacemaker:

crm configure
primitive debian ocf:heartbeat:Xen params xmfile="/xen/vm8.cfg" op monitor interval="10s" op start interval="0s" timeout="30s" op stop interval="0s" timeout="300s"

colocation debian-with-xen_fs inf: debian xen_fs
order debian-after-xen_fs inf: xen_fs:start debian:start
commit

When I push these configuration my crm_mon command output errors:

# crm_mon --one-shot -V 

============ 
Last updated: Wed Dec 12 10:33:53 2012 
Last change: Wed Dec 12 10:22:31 2012 via cibadmin on cloud4 
Stack: openais 
Current DC: cloud4 - partition with quorum 

Version: 1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c 
2 Nodes configured, 2 expected votes 
4 Resources configured. 
============ 
 
Online: [ cloud4 cloud11 ] 
 
 Master/Slave Set: ms_drbd_xen [drbd_xen] 

     Masters: [ cloud11 ] 
     Slaves: [ cloud4 ] 
 xen_fs    (ocf::heartbeat:Filesystem):    Started cloud11 
 
Failed actions: 
    debian_start_0 (node=cloud4, call=6, rc=1, status=complete): unknown 

error 
    debian_start_0 (node=cloud11, call=12, rc=1, status=complete): unknown 
error 

Does anyone know why? I believe is something related to the cfg file.


Thanks a lot!
Felipe

On Wed, Dec 12, 2012 at 11:12 AM, Ciro Iriarte <cyruspy@xxxxxxxxx> wrote:

2012/12/11 Felipe Gutierrez <felipe.o.gutierrez@xxxxxxxxx>

Hi everyone,

I need some help to setup my configuration failover system.
My goal is to have a redundance system using Xen + DRBD + Corosync + Pacemaker

On Xen I will have one virtual machine. When this computer has network down, I will do a Live migration to the second computer.
The first configuration I will need is a crossover cable, won't I? It is really necessary? Ok, I did it. eth0 is the crossover and eth1 is the network.

In my mind I will have one partion configured to DRBD and there I will install Xen Virtual Machines. The Corosync will listen this connection through network board (eth1). When this connection fail, the live migration will execute through the crossover cable. For this I will need to configure the Pacemaker with the crossover cable, won't I? I still need to do that... and I don't know how.

I am configuring other DRBD partition to share .cfg (Xen files) through it. My reference to do it is http://publications.jbfavre.org/virtualisation/cluster-xen-corosync-pacemaker-drbd-ocfs2.en

Is this configuration plausible, correct or the best one?

Thanks in advance,
Felipe
--
--
-- Felipe Oliveira Gutierrez
-- Felipe.o.Gutierrez@xxxxxxxxx
-- https://sites.google.com/site/lipe82/Home/diaadia

Hmm, what about going with Ganeti instead?.  

Regards,

--
Ciro Iriarte
http://cyruspy.wordpress.com
--

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-- 
--
-- Felipe Oliveira Gutierrez
-- Felipe.o.Gutierrez@xxxxxxxxx

-- https://sites.google.com/site/lipe82/Home/diaadia
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