I would add HA to your existing HA config - The primary issue you have
right now is that if tomcat is down, broken or needs to be disabled you
don't have a good way of doing that automatically.
My implementations for this type of application are pacemaker +
ldirectord + LVS. Since you have a 15x increase in number of clients,
now is a good time to argue the business case for something more robust
than CLUSTERIP.
David
On 11/30/12 7:30 AM, Ratko Dodevski wrote:
Probably, but HA is already the solution in place so I have to use-it.
Now there are around 200 clients but it will grow up till 3000 in the
next two months. Servers have Tomcat installed on them, so basically I
need to load balance connections from outside to the Tomcat.
Regards
On Fri, Nov 30, 2012 at 1:19 PM, David Coulson <da...@davidcoulson.net
<mailto:da...@davidcoulson.net>> wrote:
All the connections, from how many clients?
You might be better off using LVS for this.
David
On 11/30/12 7:15 AM, Ratko Dodevski wrote:
Hi guys, I need some help on configuring NLB for my application
servers. I've installed tomcat on 4 servers and I've decided to
use Linux HA for Network Load Balancing, but is seems like all
the connections are going only to one of the servers
(app-node-1). Can someone tell me what I'm doing wrong? It's
pretty simple config, just one clone resource (IPaddr2) running
on all nodes. Also, can someone tell me how is NLB done? based on
source IP, IP hash or... I need Round Robbin NLB.
app-node-1:/ # crm configure show
node app-node-1
node app-node-2
node app-node-3 \
attributes standby="on"
node app-node-4
primitive tomcat_ip ocf:heartbeat:IPaddr2 \
params ip="X.X.X.X" cidr_netmask="24" nic="eth0" \
op monitor interval="30s" \
meta target-role="started"
clone nlb_ip tomcat_ip \
meta globally-unique="true" clone-max="4" clone-node-max="1"
property $id="cib-bootstrap-options" \
dc-version="1.1.2-2e096a41a5f9e184a1c1537c82c6da1093698eb5" \
cluster-infrastructure="openais" \
expected-quorum-votes="4" \
stonith-enabled="false" \
no-quorum-policy="ignore" \
last-lrm-refresh="1333954979"
rsc_defaults $id="rsc-options" \
resource-stickiness="100"
============
Last updated: Fri Nov 23 01:57:49 2012
Stack: openais
Current DC: app-node-1 - partition with quorum
Version: 1.1.2-2e096a41a5f9e184a1c1537c82c6da1093698eb5
4 Nodes configured, 4 expected votes
1 Resources configured.
============
Online: [ app-node-1 app-node-4 app-node-2 ]
OFFLINE: [ app-node-3 ]
Clone Set: nlb_ip (unique)
tomcat_ip:0 (ocf::heartbeat:IPaddr2): Started app-node-1
tomcat_ip:1 (ocf::heartbeat:IPaddr2): Started app-node-2
tomcat_ip:2 (ocf::heartbeat:IPaddr2): Started app-node-4
tomcat_ip:3 (ocf::heartbeat:IPaddr2): Stopped
Thanks and regards
--
Ratko
_______________________________________________
Pacemaker mailing list:Pacemaker@oss.clusterlabs.org
<mailto:Pacemaker@oss.clusterlabs.org>
http://oss.clusterlabs.org/mailman/listinfo/pacemaker
Project Home:http://www.clusterlabs.org
Getting started:http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs:http://bugs.clusterlabs.org
--
Ratko
_______________________________________________
Pacemaker mailing list: Pacemaker@oss.clusterlabs.org
http://oss.clusterlabs.org/mailman/listinfo/pacemaker
Project Home: http://www.clusterlabs.org
Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org
