HMC UPDATE/ UPGRADE, doing it remotely or locally

HMC UPGRADE –# V7R7.2 to V7R7.6, or from V7 to V8 for example. You can find network install resources right here : ftp://public.dhe.ibm.com/software/server/hmc/network/ or there: ftp://ftp.software.ibm.com/software/server/hmc/network/ …or there : http://www14.software.ibm.com/webapp/set2/sas/f/netinstall/home.html Prerequisites Backup your data !!! Cleanup first As said on

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[CHEF] Grant a user the admin privileges on chef server

   

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GPFS : all my NSDs appear as « none None » in lspv output!

If by a wrong manipulation of your disks by the SAN team (which we just had), and on one your cluster’s node , when you type lspv, you’ve got no more labels on your NSD hdisks: Though NSDs are there,

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[NIM] nimpush: /usr/lpp/bos.sysmgt/nim/methods/c_nnc_setup not found

Had that today with a nim_bosinst operation:   Dunno why this error pops in, this file exists (I checked), but I know that it is caused by the following option  in the smit nim_bosinst menu: Just change this to « No »

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AIX : Calculate the SHA256 hashes of a file

  http://www.commandlinefu.com/commands/view/12734/ibm-aix-calculate-the-sha256-hashes-of-a-directory-without-sha256sum    

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GPFS : delete a configured cluster you just created (Testing only)

Easiest , dirtiest and quickest way I found to delete a freshly configured GPFS cluster (DON’T DO THIS ON A PRODUCTION SERVER !!! IT IS FOR TESTING/DEV PURPOSES ONLY !!! ) : GPFS V4 : change to CCR mode I

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GPFS : mmchnode to change a GPFS node’s IP breaks the cluster ?

I had to change IPs of my 2-nodes GPFS cluster, in order to move them from a LAN network to a DMZ. So what I did, is : I changed the system’s IP address without stopping the cluster (yeah, I

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1-Liner : Get the WWNs associated with your hdisks from a list of hosts

 

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0516-082 varyonvg: Unable to access a special device file

from http://how-2-know.com/main/2013/03/27/0516-082-varyonvg-unable-to-access-a-special-device-file/   if you got the following error while you trying to vary on a volume group: just make the following steps:

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IBM Enterprise pools cheatsheet

Create an enterprise pool (license file needed) List existing pools managed by the HMC List details of Enterprise pool :  List only available proc units and memory:   List HMC which are managing Enterprise pool    List history of commands

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[VI] KSH command line tips in vi editor mode

As always, this is a post in progress, I may update it from time to time, so don’t worry if you don’t find what you need, come back later and maybe you will find it next time 🙂 I also

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