[Linux-cluster] 2 node cluster showing strange behaviour

[Ben .T.George]

Hi thanks for your reply

Beloe is my cluster.conffile

<?xml version="1.0"?>
<cluster config_version="7" name="eccprd">
        <clusternodes>
                <clusternode name="cgceccprd1.combinedgroup.net" nodeid="1">
                        <fence>
                                <method name="ucs-node1"/>
                        </fence>
                </clusternode>
                <clusternode name="cgceccprd2.combinedgroup.net" nodeid="2">
                        <fence>
                                <method name="ucs-node2"/>
                        </fence>
                </clusternode>
        </clusternodes>
        <cman expected_votes="1" two_node="1"/>
        <rm>
                <resources>
                        <ip address="172.22.10.230" sleeptime="10"/>
                </resources>
                <service exclusive="1" name="eccsapmnt" recovery="relocate">
                        <ip ref="172.22.10.230"/>
                </service>
        </rm>
        <fencedevices>
                <fencedevice agent="fence_cisco_ucs" ipaddr="172.22.90.61"
login="admin" name="ucs-node1" passwd="duc2Cisco"/>
                <fencedevice agent="fence_cisco_ucs" ipaddr="172.22.90.59"
login="admin" name="ucs-node2" passwd="duc2Cisco"/>
        </fencedevices>
</cluster>

when i try to start cluster on node1, i am geeting this message on mesages:

 tail -f -n 0 /var/log/messages
Sep 18 06:06:02 cgceccprd1 modcluster: Starting service: eccsapmnt on node
Sep 18 06:06:08 cgceccprd1 modcluster: Starting service: eccsapmnt on node
cgceccprd1.combinedgroup.net


but the service is not starting.on luci , it's showing both nodes are
online.but on clustat different

main error getting on messages is

Sep 18 03:35:48 cgceccprd1 fenced[8424]: fencing node
cgceccprd2.combinedgroup.net still retrying
Sep 18 04:06:16 cgceccprd1 fenced[8424]: fencing node
cgceccprd2.combinedgroup.net still retrying
Sep 18 04:36:45 cgceccprd1 fenced[8424]: fencing node
cgceccprd2.combinedgroup.net still retrying
Sep 18 05:07:14 cgceccprd1 fenced[8424]: fencing node
cgceccprd2.combinedgroup.net still retrying
Sep 18 05:37:42 cgceccprd1 fenced[8424]: fencing node
cgceccprd2.combinedgroup.net still retrying

These messages from node1.i am geeting same message on node saying that

cgceccprd2 fenced[8424]: fencing node cgceccprd1.combinedgroup.net still
retrying

i don't know what is problem here.

please help me solve
Regards,
Ben




On Tue, Sep 18, 2012 at 5:03 AM, Digimer <lists at alteeve.ca> wrote:

> On 09/17/2012 04:56 PM, Ben .T.George wrote:
>
>> HI
>>
>> my cman_tool status is showing multicast IP address like below:
>>
>> Multicast addresses : 239.192.140.34
>>
>> i tried to ping on this IP.but it's not pining..i don't know more about
>> multicast configuration..
>>
>> please help me to check multicast more.
>>
>
> Multicast IPs do not represent a specific machine, but a group. Think of
> multicast as a sort of "mailing list"; A machine "subscribes" to the
> multicast group and the switch then says "right, when a packet comes in
> addressed to the multicast group, forward a copy to all subscribed
> machines". With Cisco, you need to create persistent multicast groups in
> the switch, if I recall correctly (I don't use Cisco myself).
>
> In your case though, you're showing "cgceccprd1.combinedgroup.net" as
> "Offline" from both nodes, so the cluster is simply not starting.
>
> Can you paste your cluster.conf please? Also, can you run 'tail -f -n 0
> /var/log/messages' in a terminal on cgceccprd1, try to start the cluster,
> wait for it to fail and then paste the output along with your configuration?
>
> This might help (the "Overview" section at the start, if nothing else).
> There is a sample cluster.conf there.
>
> https://alteeve.ca/w/2-Node_**Red_Hat_KVM_Cluster_Tutorial<https://alteeve.ca/w/2-Node_Red_Hat_KVM_Cluster_Tutorial>
>
> hope that helps
>
> --
> Digimer
> Papers and Projects: https://alteeve.ca
>
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