Hi all!
I just configured a 3 node Cluster, where 2 nodes have drbd shared storage where 1 Virtual machine can migrate between node1 and node2.
Node3 is running 1 virtual machine but is not needed HA on it, so Node3 is used for quorum.
My cluster config is:
Node 1 and Node2 are equipped with an idrac7 so I used it for configure fencing.
My cluster.conf is;
fence_ls
I have two questions/problems with fencing:
1º- When I disconnect the ethernet cable from node1, it is rebooted by fencing and vmid=100 is migrated to node2, at this point is ok. But when node1 is rebooted (I connected again the ethernet) some times I have an error at startup:
When this occurs, I have to log to node and execute:
Why this happens? How can avoid this 'disconnection' an wait for quorum ok at startup? Do you advise to execute restart cman/pve-cluster /rmanager on each reboot?
2º- My biggest problem that I need to know if is possible to do and what I need to do it: Automigrate the virtual machine between node1 and node 2 (and vice versa) when a sudden power down occurs. Fencing and automigrate virtual machines with ethernet problems works fine because idrac fencing is working, but I don't know how to manage when a not controlled power downs occurs.
Someone can help me?
Best regards.
I just configured a 3 node Cluster, where 2 nodes have drbd shared storage where 1 Virtual machine can migrate between node1 and node2.
Node3 is running 1 virtual machine but is not needed HA on it, so Node3 is used for quorum.
My cluster config is:
Code:
Cluster Status for mycluster @ Wed May 6 13:18:31 2015Member Status: Quorate
Member Name ID Status
------ ---- ---- ------
node1 1 Online, rgmanager
node2 2 Online, Local, rgmanager
node3 3 Online
Service Name Owner (Last) State
------- ---- ----- ------ -----
pvevm:100 node1 startedNode 1 and Node2 are equipped with an idrac7 so I used it for configure fencing.
My cluster.conf is;
Code:
<?xml version="1.0"?><cluster config_version="15" name="mycluster">
<cman expected_votes="2" keyfile="/var/lib/pve-cluster/corosync.authkey" two_node="0"/>
<fencedevices>
<fencedevice agent="fence_drac5" cmd_prompt="admin1->" ipaddr="192.168.1.212" login="root" name="node1-drac" passwd="root" secure="1" power_wait="2"/>
<fencedevice agent="fence_drac5" cmd_prompt="admin1->" ipaddr="192.168.1.211" login="root" name="node2-drac" passwd="root" secure="1" power_wait="2"/>
</fencedevices>
<fence_daemon clean_start="0" post_fail_delay="60" post_join_delay="30"/>
<clusternodes>
<clusternode name="node1" nodeid="1" votes="1">
<fence>
<method name="1">
<device name="node1-drac"/>
</method>
</fence>
</clusternode>
<clusternode name="node2" nodeid="2" votes="1">
<fence>
<method name="1">
<device name="node2-drac"/>
</method>
</fence>
</clusternode>
<clusternode name="node3" nodeid="3" votes="1"/>
</clusternodes>
<rm>
<pvevm autostart="1" vmid="100"/>
</rm>
</cluster>fence_ls
Code:
fence_tool lsfence domain
member count 3
victim count 0
victim now 0
master nodeid 2
wait state none
members 1 2 31º- When I disconnect the ethernet cable from node1, it is rebooted by fencing and vmid=100 is migrated to node2, at this point is ok. But when node1 is rebooted (I connected again the ethernet) some times I have an error at startup:
Code:
Global setup... [OK]
Loading Kernel modules ... [OK]
Mounting configfs... [OK]
Starting cman... [OK]
waiting for quorum... timed-out waiting for cluster FAILED
Code:
/etc/init.d/cman restart
/etc/init.d/pve-cluster restart
activate rmanager from promox GUI2º- My biggest problem that I need to know if is possible to do and what I need to do it: Automigrate the virtual machine between node1 and node 2 (and vice versa) when a sudden power down occurs. Fencing and automigrate virtual machines with ethernet problems works fine because idrac fencing is working, but I don't know how to manage when a not controlled power downs occurs.
Someone can help me?
Best regards.