<div dir="ltr"><div>Well.... Is just a simple ubuntu server with TGT installed... <br></div>I follow this website: <a href="http://www.cyberciti.biz/tips/howto-setup-linux-iscsi-target-sanwith-tgt.html">http://www.cyberciti.biz/tips/howto-setup-linux-iscsi-target-sanwith-tgt.html</a><br>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-07-07 13:57 GMT-03:00 Jean R. Franco <span dir="ltr"><<a href="mailto:jfranco@maila.net.br" target="_blank">jfranco@maila.net.br</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-family:times new roman,new york,times,serif;font-size:12pt;color:#000000"><div>Hi Gilberto,</div><div><br></div><div>What is the iSCSI solution you´re using?</div><div><br></div><div>Thanks,</div><div>
<br></div><hr><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt"><b>De: </b>"Gilberto Nunes" <<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>><br>
<b>Para: </b>"admin-at-extremeshok-dot-com" <<a href="mailto:admin@extremeshok.com" target="_blank">admin@extremeshok.com</a>>, <a href="mailto:pve-user@pve.proxmox.com" target="_blank">pve-user@pve.proxmox.com</a><br>
<b>Enviadas: </b>Segunda-feira, 7 de julho de 2014 7:59:54<br><b>Assunto: </b>Re: [PVE-User] Cluster HA withtou Fence Device !<div><div class="h5"><br><div><br></div><div dir="ltr"><div><div><div><div>Well <br></div>I am using iSCSI for storage and quorum... <br>
</div>First I tried with 3 nodes plus storage... <br></div>I shutdown the node1 where VM was running and the VM restart on node2... <br>
<br></div><br><div><br></div><br></div><div class="gmail_extra"><br><div><br></div><div class="gmail_quote">2014-07-07 7:20 GMT-03:00 admin-at-extremeshok-dot-com <span dir="ltr"><<a href="mailto:admin@extremeshok.com" target="_blank">admin@extremeshok.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Assuming he is using shared storage (NAS)... <br>
<br>
The nas operates as a 3rd node, and the systems are fenced via the
NAS.<br>
<br>
As long as 1 node can communicate with the NAS, it will have a
higher quorum, than the node that cant connect to the NAS.<br>
<br>
Single point of failure is NAS, so its not HA.<div><div><br>
<br>
<div>On 7/7/2014 11:50 AM, Yannis Milios
wrote:<br>
</div>
<blockquote>
<p dir="ltr">I tried the same config on a lab but does not work.<br>
I think its not possible to have HA without proper fencing.<br>
Im</p>
<div class="gmail_quote">On Jul 7, 2014 12:40 PM, "Angel Docampo"
<<a href="mailto:adocampo@dltec.net" target="_blank">adocampo@dltec.net</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div> <span face="Bitstream
Vera Sans" style="font-family:'Bitstream Vera Sans'">What do you mean by "it works"?<br>
Without fence mechanism, the cluster won't be aware there
a node down, and then you can continue writing
modifications in both sides and finish with a split brain.<br>
<br>
<br>
<br>
</span>
<div>El 05/07/14 21:49, Gilberto Nunes escribió:<br>
</div>
<blockquote>
<div dir="ltr">
<div>
<div>
<div>WOW<br>
<br>
Even with just 2 nodes HA works fine!!!!<br>
<br>
</div>
I have tested some minutes ago...<br>
<br>
</div>
Is there something improvement on HA Code??<br>
<br>
</div>
I would like to know...<br>
<br>
Thanks<br>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2014-07-05 16:37 GMT-03:00
Gilberto Nunes <span dir="ltr"><<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>
<div>
<div>Hi<br>
<br>
</div>
Today I have deploy a tree node plus
storage scenario in a lab.<br>
</div>
First at all, I image that I need
configure fence device, as docs
demand...<br>
</div>
So, I decide to use a MAnaged Switch
(DLikn DES-3028).<br>
</div>
But, I realize that even without fence
configuratio HA works properly and NICE, I
might add..<br>
<br>
</div>
Here's the configuration:<br>
<br>
<?xml version="1.0"?><br>
<cluster config_version="18"
name="CLUSTER"><br>
<cman expected_votes="3"
keyfile="/var/lib/pve-cluster/corosync.authkey"/><br>
<quorumd allow_kill="0" interval="3"
label="quorum" tko="10" votes="1"><br>
<heuristic interval="3" program="ping
10.90.90.100 -c1 -w1" score="1" tko="4"/><br>
<heuristic interval="3" program="ip addr
| grep eth0 | grep -q UP" score="2"
tko="3"/><br>
</quorumd><br>
<totem token="54000"/><br>
<clusternodes><br>
<clusternode name="pve01" nodeid="1"
votes="1"><br>
</clusternode><br>
<clusternode name="pve02" nodeid="2"
votes="1"><br>
</clusternode><br>
<clusternode name="pve03" nodeid="3"
votes="1"><br>
</clusternode><br>
</clusternodes><br>
<rm><br>
<failoverdomains><br>
<failoverdomain name="serverfailover"
ordered="1" restricted="0"><br>
<failoverdomainnode name="pve1"
priority="1"/><br>
<failoverdomainnode name="pve2"
priority="2"/><br>
<failoverdomainnode name="pve3"
priority="3"/><br>
</failoverdomain><br>
</failoverdomains><br>
<pvevm autostart="1" vmid="100"/><br>
</rm><br>
</cluster><br>
<br>
<br>
</div>
I always though that I need fence device in
order to make HA work...<br>
<br>
</div>
Thanks<span><span color="#888888" style="color:#888888"><br clear="all">
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div><br>
-- <br>
Gilberto Ferreira<br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</span></span></div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Gilberto Ferreira<br>
</div>
<br>
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