Difference between revisions of "Patching with Live Upgrade"
From Peter Pap's Technowiki
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Revision as of 02:01, 26 November 2010
So you have a critical system that needs patching, but you can't risk killing the box. Solaris uses "Live Upgrade" as a tool for altering a system, while maintaining the ability to rollback the change. This is ideal for patching a system, especially kernel patches and the like, as it means that you can apply you patches, try them out and rollback if it's failed. The method I describe here, assumes that the boot disks are mirrored. You can still use Live Upgrade in a non-mirrored environment, but I'm not going in to that here.
