Installation & Upgradation

Install a Client Using NIM:

• Configure NIM master
• Defined basic NIM resources
• Defined NIM client you want to install
• Smit nim_bosinst
• Select a target for the BOS installation operation
• Select rte installation for the installation type
• Select the lpp_source resource for the BOS installation
• Select the SPOT resource for the BOS installation
• Select bosinst_data resource that is capable of performing a non prompted BOS installation
• Select resolv_conf resource
• Select accept new license agreement option and select yes
• Press enter
• Check the status using lsnim –l client name

Clone a rootvg using alternate disk installation:

• Check the status of physical disks(lspv) hdisk1 as an alternate disk.
• Check the fileset bos.alt_disk_install.rte using lslpp. If its not installed install using geninstall –d /dev/cd0 bos.alt_disk_install.rte
• Smit alt_cloneàselect hdisk1à

VIO updates:

• Applying updates from a local hard disk(Login to the vio by padminàCreate a directoryàusing ftp transfer the update files(Or) mount remote_machine_name:directory /mntàcommit previous updates(updateios –commit)àApply the update ( updateios –accept –install –dev àverify the update using ioslevel àreboot the vio(shutdown –restart)

Migration AIX Version 5.3:

Prechecks:

• System Requirements: Physical Memory:128MB, Paging Space: 512MB, Disk Space:2.2GB
• Take snap of system using snap –a
• Documenting your hardware using lsdev –CHc memory, bootinfo –r, lsdev –CHc disk, lsdev –CHc adapter, df –k
• Documenting your software: oslevel, lslpp –la, lslicense, lsattr –El sys0,
• Take system backup and data VG

Migration Process:

• Change the boot list using bootlist –m normal cd0
• Insert the aix 5l base CD into the CD-ROM
• Boot the system from CD. You will get the installation menu.
• The default method of installation is migration
• Select the hdisk, select advanced options for 32-bit or 64-bit

Migration using alternate disk install:

• The OS is copied to another disk on your NIM client
• The copied rootvg is then migrated to 5L.

Process: smit nim(or nimadm_migrate)àPerform NIM software installation and Maintenance tasksàAlternate disk installationà NIM alternate disk migrationàperform nim alternate disk migration( select client, disk name, LPP source and SPOT name)

Migration AIX Version 6.1:

• Take an mksysb backup for rootvg on bootable media
• Make a copy: /etc/inetd.conf, /etc/inittab, /etc/motd, /usr/dt/config/Xservers
• Check and remove restricted tunables in /etc/nextboot
• Ensure root user is primary authentication method of system. Lsuser –a auth1 root; chuser auth1=system root
• Users who have logged must be log off
• Check error log: errpt
• Verify the processor capacity(32/64bit): prtconf –c
• Insert 6.1 dvd and mount it: mount –v cdrfs –o ro /dev/cd0 /mnt
• Copy file /mnt/usr/lpp/bos/pre_migration to /tmp and run /tmp/pre_migration. The output will be stored in /home/pre_migration.yymmddhhmmss
• Shutdown –F
• Manually turn on system and boot from DVD
• Select current console as the system console
• Select English language
• Select change/show installation settings and make sure the installation type is migration
• Run /usr/lpp/bos/post_migration

Migrating HACMP cluster to 5.3:

• Enough disk space is required on /(1.2 MB) and /usr(120MB)
• Minimum RAM 128MB required

Pre migration Steps:

• Take a snapshot
• Take system backup
• Run lppchk –v, check ML, check errpt, df –k, lsps –s,

Rolling Migration:

• From the working cluster we saved a snapshot
• Took MKSYSB
• Create alt_disk_install
• Stop hacmp with takeover. Check that its moved to another node. Confirm with clfindres.
• Install latest AIX fixes
• Update and verify RSCT levels
• Remove and replace SDD. (stopsrc –s sddsrv, rmdev –dl dpo –R, uninstall SDD with smitty remove, install latest SDD)
• Run smitty update_all
• Reboot the node
• Repeat the steps to other servers
• Check the cluster state by lssrc –ls clstrmgrES

Snapshot Migration:

• Stop HACMP on all nodes
• Run smitty remove and deinstall cluster.*
• Migrate the AIX/RSCT
• Install the HACMP packages on all nodes
• Reboot all nodes
• Convert the snapshot: /usr/es/sbin/cluster/conversion/clconvert_snapshot –v 5.2 –s snapshot.odm
• Apply the snapshot: smitty hacmpàextended configurationàsnapshot configurationàapply a cluster snapshotàselect snapshot and press enter
• Start cluster services one node at a time.

Post Migration steps:

• Verify and synchronize the cluster configuration
• Do failover test