Le 16/09/2013 17:30, Gopalakrishnan N a écrit :
Hey Guys,
The OS am running is CentOS 6.4 (64bit) and I have disabled IPtables and
SeLinux.
My goal is to make Apache Tomcat as HA. As a first step thought of
testing with Apache.
My network setup is like this,
Node1 is connected to switch
Note2 is connected to switch.
My cluster.conf file is as follows,
[root@test01 ~]# cat /etc/cluster/cluster.conf
<?xml version="1.0"?>
<cluster config_version="1" name="mycluster1">
<logging debug="off"/>
<clusternodes>
<clusternode name="test01" nodeid="1">
<fence>
<method name="pcmk-redirect">
<device name="pcmk" port="test01"/>
</method>
</fence>
</clusternode>
<clusternode name="test02" nodeid="2">
<fence>
<method name="pcmk-redirect">
<device name="pcmk" port="test02"/>
</method>
</fence>
</clusternode>
</clusternodes>
<fencedevices>
<fencedevice name="pcmk" agent="fence_pcmk"/>
</fencedevices>
</cluster>
And @some point of time am able to see both nodes are registered,
[root@test01 ~]# cman_tool nodes
Node Sts Inc Joined Name
1 M 104 2013-09-17 02:01:11 test01
2 M 108 2013-09-17 02:15:07 test02
And @sometimes with crm_mon -1, I get the following
[root@test01 ~]# crm_mon -1
Last updated: Tue Sep 17 02:47:27 2013
Last change: Tue Sep 17 00:42:43 2013 via crmd on test01
Stack: cman
Current DC: NONE
4 Nodes configured, 2 expected votes
0 Resources configured.
Node test01: UNCLEAN (offline)
Node test01.iopextech.com <http://test01.iopextech.com>: UNCLEAN (offline)
Node test02: UNCLEAN (offline)
Node test02.iopextech.com <http://test02.iopextech.com>: UNCLEAN (offline)
Thanks.
Ok, if you are still unhappy with CMAN check your switch for multicast.
From there, I assume you are happy with cman otherwise there are no
reasons to start pacemaker, but you did, so you get my point ;)
This kind of errors often indicates that your /etc/hosts or DNS is wrong
and pacemaker has a hard time to map hostnames and IPs, etc (not sure
about the internals there...)
Get rid of the invalid nodes by editing the configuration; stop
pacemaker; fix your resolutions and retry.
In the entire process, I usually use FQDN in my cluster.conf file, and I
add them and the corresponding ring IP in my /etc/hosts file on all
nodes. I also use the same FQDN in my pacemaker configuration.
Cheers
On Mon, Sep 16, 2013 at 8:40 PM, Florian Crouzat
<gen...@floriancrouzat.net <mailto:gen...@floriancrouzat.net>> wrote:
Le 16/09/2013 14:18, Gopalakrishnan N a écrit :
Do I need to have a cross over cable between each node? Is it
mandatory?
Nop it doesn't.
In your case, I'd check the network architecture and/or firewalling
regarding multicast. You probably either have wrong iptables and/or
a switch dropping your multicast corosync ring(s).
Also, please, as Andreas said: try to communicate with us in a more
efficient way: more context, more informations and more output
(pasted somewhere).
We are happy to help people, but we don't have to waste our time
trying to understand what these exact people doesn't tell us because
they are lazy.
ps: also use 'corosync-objctl' ; it's a good command to debug rings
and configurations.
Cheers,
Florian.
On Mon, Sep 16, 2013 at 8:01 PM, Gopalakrishnan N
<gopalakrishnan...@gmail.com
<mailto:gopalakrishnan...@gmail.com>
<mailto:gopalakrishnan.an@__gmail.com
<mailto:gopalakrishnan...@gmail.com>>> wrote:
Again the when i restarted the pacemaker and cman not the
nodes are
not in online, back to square 1.
node1 shows only node1 online, and node2 says node2 online.
I don't
know what's happening in the background...
Any advice would be appreciated..
Thanks.
On Mon, Sep 16, 2013 at 6:47 PM, Gopalakrishnan N
<gopalakrishnan...@gmail.com
<mailto:gopalakrishnan...@gmail.com>
<mailto:gopalakrishnan.an@__gmail.com
<mailto:gopalakrishnan...@gmail.com>>>
wrote:
Hi guys,
I got it, basically it tool some time to propogate and
now two
nodes are showing online...
Thanks.
On Mon, Sep 16, 2013 at 6:39 PM, Gopalakrishnan N
<gopalakrishnan...@gmail.com
<mailto:gopalakrishnan...@gmail.com>
<mailto:gopalakrishnan.an@__gmail.com
<mailto:gopalakrishnan...@gmail.com>>> wrote:
I have configured CMAN as per the link
http://clusterlabs.org/doc/en-__US/Pacemaker/1.1-plugin/html-__single/Clusters_from_Scratch/__index.html#_configuring_cman
<http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html-single/Clusters_from_Scratch/index.html#_configuring_cman>
but
when I type cman_tools nodes only one node is
online even
thought the cluster.conf is propogated in other
node as well.
what could be the reason, in node1, cman_tool nodes
shows
only node1 online, in node2 it shows only node2 is
online.
How to make two nodes as online, even thought CMAN
service
is running in both nodes.
Thanks in advance.
Regards,
Gopal
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--
Cheers,
Florian Crouzat
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Project Home: http://www.clusterlabs.org
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Bugs: http://bugs.clusterlabs.org
_______________________________________________
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--
Cheers,
Florian Crouzat
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