Hello,
I'm experimenting with a 2-nodes cluster, based on RHEL4.
The goal is to manage a service failover, I don't need GFS for now.
I think the following packages are sufficient:
ccs Manage the cluster configuration file
cman Symmetric Cluster Manager
cman-kernel Back end behind cman
dlm Distributed Lock Manager
dlm-kernel Back end behind dlm
fence Power control
magma cluster-abstraction library
magma-plugins Maybe we need the sm plugin?
Is this correct?
Anyway I've built and installed these 1.01 packages on the two nodes.
But when I start the cluster, both nodes seem to think they're the only node in town.
Any clue welcome!
# Startup procedure I used on both nodes:
depmod -a
modprobe cman
modprobe dlm
ccsd
cman_tool join
# What node 1 sees:
[root@eiros3 ~]# cman_tool status
Protocol version: 5.0.1
Config version: 2
Cluster name: eiros
Cluster ID: 3249
Cluster Member: Yes
Membership state: Cluster-Member
Nodes: 1
Expected_votes: 1
Total_votes: 1
Quorum: 1
Active subsystems: 0
Node name: eiros3
Node addresses: 192.168.8.73
[root@eiros3 ~]# cman_tool nodes
Node Votes Exp Sts Name
1 1 1 M eiros3
# What node 2 sees:
[root@eiros4 ~]# cman_tool status
Protocol version: 5.0.1
Config version: 2
Cluster name: eiros
Cluster ID: 3249
Cluster Member: Yes
Membership state: Cluster-Member
Nodes: 1
Expected_votes: 1
Total_votes: 1
Quorum: 1
Active subsystems: 0
Node name: eiros4
Node addresses: 192.168.8.74
[root@eiros4 ~]# cman_tool nodes
Node Votes Exp Sts Name
2 1 1 M eiros4
# Here's the cluster.conf file:
<?xml version="1.0"?>
<cluster name="eiros" config_version="2">
<fencedevices>
<fencedevice name="eiros3-ilo" agent="fence_ilo"
hostname="eiros3-mp" login="login" passwd="passwd"/>
<fencedevice name="eiros4-ilo" agent="fence_ilo"
hostname="eiros4-mp" login="login" passwd="passwd"/>
<fencedevice name="last_resort" agent="fence_manual"/>
</fencedevices>
<clusternodes>
<clusternode name="eiros3" nodeid="1" votes="1">
<fence>
<!-- "power" method is tried before all others -->
<method name="power">
<device name="eiros3-ilo"/>
</method>
<method name="human">
<device name="last_resort" ipaddr="eiros3"/>
</method>
</fence>
</clusternode>
<clusternode name="eiros4" nodeid="2" votes="1">
<fence>
<!-- "power" method is tried before all others -->
<method name="power">
<device name="eiros4-ilo"/>
</method>
<method name="human">
<device name="last_resort" ipaddr="eiros4"/>
</method>
</fence>
</clusternode>
</clusternodes>
<!-- 2-nodes clusters need this special quorum adjustment -->
<cman port="6809"
two_node="1" expected_votes="1">
</cman>
</cluster>
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= Jean-François Larvoire ========= _/ ===========
= Hewlett-Packard ======= _/ =======
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