AIX in Focus: LKU (Live kernel Update)

Feature of AIX from 2014, so plenty of "field hardening" from real production experience. Briefly: Updating the AIX kernel without rebooting the AIX live kernel. Benefits: No AIX reboot or application downtime to activate a new kernel for AIX technology level (TL) or service packs (SP) update. WARNING: LKU is for experienced AIX System Administrators Only I would allow 2 to 4 days for your first LKU (mostly reading and checking pre-reqs), but a lot faster after that. - Or - Engage with IBM Lab Services for 2 to 4 days to understand the pre-req checks, prepare your AIX for LKU, skills transfer and a few updates using LKU so you get practice. Important links: AIX Enhancements and Modernization Redbook sections 1.1 and 1.5 - http://www.redbooks.ibm.com/redbooks/pdfs/sg248453.pdf Official Documentation – IBM Docs - https://www.ibm.com/docs/en/aix/7.2?topic=updates-live-update Also read: Prerequisites - https://www.ibm.com/docs/en/aix/7.2?topic=planning-prerequisites Restrictions - https://www.ibm.com/docs/en/aix/7.2?topic=planning-restrictions Best Practices - https://www.ibm.com/docs/en/aix/7.2?topic=planning-best-practices Excellent content from Chris Gibson on the Power Systems VUG (no registration) - https://www.youtube.com/watch?v=kU5jc0MKK3o Same content but as a printable document http://gibsonnet.net/blog/cgaix/resource/chris_aix_live_update_best_practice_v0.6.pdf Note: I have retired from IBM but still interested in supporting and helping nmon and njmon users. Plus questions on AIX 7 and Power10 servers, Please use [email protected] from now on.