[Linux-cluster] 2 node cluster questions

[Benjamin Budts]

Found my problem

 

When running cman_tool status I saw that each node  only saw 1 node. 

I have 2 pairs of network on each machine (heartbeat network 1gbit multicast
enabled/application network 10Gbit) with their own host mapping in
/etc/hosts

 

I used the the non-heartbeat hostname to add nodes into cluster via luci
which caused issues.

 

Removed luci & /var/lib/luci on nodes, as well as cat /dev/null
/etc/cluster/cluster.conf

Reinstalled luci, created cluster, added 2 nodes with correct hostnames,
problem solved.

 

Could anyone point me to a good guide for using cluster lvm ? 

 

Thx

 

 

 

From: Elvir Kuric [mailto:ekuric at redhat.com] 
Sent: vrijdag 17 januari 2014 10:42
To: ben at zentrix.be
Subject: Re: [Linux-cluster] 2 node cluster questions

 

On 01/16/2014 06:04 PM, Benjamin Budts wrote:

 

Hey All,

 

 

About my setup :

 

I created a cluster in luci with shared storage, added 2 nodes (reachable),
added 2 fence devices (idrac).

 

Now, I can't seem to add my fence devices to my nodes. If I click on a node
it times out in the gui.

 

So I checked my node logs and found in /var/log/messages ricci hangs on
/etc/init.d/clvmd status

 

When I run the command manually I get the PID and it hangs.

 

 

I also seem to have a split brain config :

 

# clustat on node 1 shows : node 1 Online,Local

                                                    Node 2 Offline

 

# clustat on node 2 shows : node 1 offline

                                                    Node 2 online, Local

 

 

My next step was testing if my multicast was working correctly (I suspect it
isn't). Would you guys have any recommendations besides the following redhat
multicast test link ? : 

 

Https://access.redhat.com/site/articles/22304

 

 

 

Some info about my systems  :

----------------------------------

 

.         Redhat 6.5 on 2 nodes with resilient storage & HA addon licenses

.         Mgmt. station redhat 6.5 with Luci

 

 

 

Thx a lot





Hard to say what issue is based on this without checking fully logs, can you
please open case via Red Hat customer portal https://access.redhat.com ( I
assume you have valid subscription ) so we can take deeper look into this
problem.

Thank you in advance, 

Kind regards, 





-- 
Elvir Kuric,Sr. TSE / Red Hat / GSS EMEA / 
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