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Clustering

Configure Bond on Ubuntu 12

9:41 AM
In newer versions of Ubuntu they require you to put the config for the bond interface above the eth interface configs. Or the interface will not come up correctly and pings will fail. *How To Configure Bond in Ubuntu 12* Icon   Source: http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/precise/ifenslave-2.6/precise/view/head:/debian/README.Debian example: The loopback network interface auto bond0 iface bond0 inet static address 10.178.2.48 netmask 255.255.255.0 network 10.178.2.0 gateway 10.178.2.60...

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Clustering

How do you configure a Dell DAS for a Windows cluster?

7:25 PM
Pre-Requisites In order to install and configure a Dell DAS unit you need to ensure the following items are taken care of to avoid errors during the hardware setup on the OS: All SAS cables on all paths you plan on using are hooked up The management interfaces on the RAID controllers on the DAS are hooked up to the iLO network which...

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Clustering

How can I evict a node from a Windows Cluster from the command line?

11:43 AM
If you go through the GUI and are unable to uninstall a windows cluster chances are you have components that have not cleared themselves correctly from the registry. In order to get the target server(s) back to a pre-clustered configuration, you can use the instructions in the following link:http://support.microsoft.com/kb/282227Do note that this will forcefully delete all configuration in the registry redering any and...

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Clustering

How do I generate a detailed log for cluster services in Windows 2008?

11:57 AM
Ever need to create a more detailed log for Windows 2008 failover clustering? Well, it became much easier for you. Just run the following command and then go into the directory C:\Windows\Cluster\Reports to get the cluster.log file: cluster log /g /level:5For more information, please read the link below:http://blogs.msdn.com/b/clustering/archive/2008/09/24/8962934.aspx ...

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Active Directory

Can I move an existing cluster to the same or another domain?

11:42 AM
The short answer is "yes" however its not recommended nor supported. If you choose to perform this option, you have to go in and just like any standalone Windows box first unjoin it and then rejoin the cluster nodes to the Active Directory domain you are looking for. The short answer is "yes" however its not recommended nor supported. If you choose to...

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Clustering

Recommended Settings for Windows 2008 Clustering

12:00 PM
The following settings can be used for a general cluster configuration. Do note that you want to be EXTREMELY careful in setting high values here so as to not cause a non-detection event where the cluster does not failover as expected: Likewise, turning up the sensitivity may cause false failover events to happen when not needed:If any nodes are currently paused, unpause them...

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Clustering

How to debug cluster communications in RHEL5?

12:05 PM
RHEL5 rhcs cluster nodes will try to fence each other if they lose multicast cluster communications between nodes.In these types of problems the culprit is almost always a failure or configuration issue with multicast at the network switch.EnvironmentRed Hat Cluster SuiteDiagnosing the problem1. On all cluster nodes enable recognition of icmp broadcasts:echo 0 >/proc/sys/net/ipv4/icmp_echo_ignore_broadcasts2. On all cluster nodes run "cman_tool status" and note:A....

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Clustering

What has changed for Windows 2008 and the heartbeat network?

12:03 PM
With the introduction of Windows 2008, several improvements were introduced to improve upon Microsoft's cluster technology. In order to support a multisite cluster configuration, changes in how a cluster performs its inter cluster communication or health-checks was updated. Configuring these settings is done from the command line and is detailed below:The following links below detail this process in more detail for your consumption.To...

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Clustering

Migrating Windows SAN Clusters

12:06 PM
Carve the new LUNs on the new array (Storage)If possible, add the new array and its LUNs to the same switch as the existing array (Storage).Configure the switch to expose the new LUNs to NodeA and NodeB (Storage)Install Powerpath/Multipath and then use disk management to rescan the drivesUse the active node to partition and format the disksUse Cluster Admin to create the new...

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Clustering

How do I enable a bigger cluster log file?

11:44 AM
To enable a bigger cluster log file you can refer to the following document online at: http://support.microsoft.com/kb/168801Do note that to fully enable this you have to also reboot the cluster service on ALL nodes for this to work. To enable a bigger cluster log file you can refer to the following document online at: http://support.microsoft.com/kb/168801Do note that to fully enable this you have...

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Cloud Computing

Best Practices for Windows 2003 Clusters

11:39 AM
The following is a checklist for common items that should be implemented or considered when you need to install a Windows based cluster for a customer:Number of Cluster Nodes - typically this is (2) nodes but can go up to (4) node configurations within OpSource. Number of NIC's - Network interfaces are often bonded together for fault tolerance.  But, for a cluster, we...

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Clustering

How do I move the Cluster Core Services in WIndows 2008?

11:58 AM
The following link details how to move a Cluster Quorum group in Windows 2008:http://blogs.msdn.com/b/joesack/archive/2009/01/08/windows-server-2008-how-to-move-the-quorum-disk-group.aspx The following link details how to move a Cluster Quorum group in Windows 2008:http://blogs.msdn.com/b/joesack/archive/2009/01/08/windows-server-2008-how-to-move-the-quorum-disk-group.aspx ...

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