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5 Creating a Server Cluster : 5.1 Manually Creating a Cluster : 5.1.2 Performing an OS and Software Update

Check the box next to Perform OS and Software update when defining a cluster (see Figure 5.8) to instruct EDB Ark to perform a yum update whenever the cluster is provisioned; this option is disabled for clusters that use statically provisioned servers. The yum update command updates all of the outdated packages that reside on the cluster. The update will occur when a cluster is scaled up, scaled down, or during a failover.
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Figure 5.8 – The new Server Cluster dialog.
When you check the box next to Perform OS and Software update ?, EDB Ark will warn you that enabling this functionality can significantly slow down cluster operations (see Figure 5.9).
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Figure 5.9 – The software update warning.

5 Creating a Server Cluster : 5.1 Manually Creating a Cluster : 5.1.2 Performing an OS and Software Update

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