HP-UX 11 to 11.11 OS Upgrade

[Cliff Lim Kok Hwee]

Gd Day Forum,

I will need to perform OS upgrade of 1 HP-UX server running 11.00 to 11.11.

Scope of work:

- We will remove the mirrored vg00 which is only 18GB size (2x 9GB PVs) with new 146GB size (2x 73GB PVs).
- Ignite the new harddisks (2x 73GB PVs) with 11.11
- Restore back OS configuration files and setting

Note: Application volume group is NOT touched

Query: - Can anyone advise me on the OS files and settings to backup and restore to ensure proper migration?

- Is they any relevant guide available?

Thanks/cliff

[Slawomir Gora]

Hi,

I don't know you aplication but main
topics are:

1. network configuration
- /etc/rc.config.d/netconf
- /etc/hosts
- /etc/services
- /etc/inetd.conf
if you use DNS
- /etc/resolv.conf
- /etc/nsswitch.conf
2. kernel parameters configuration
3. crontabs
- /var/spool/cron
- /var/adm/cron (allow, deny)
4. user database
- /etc/group
- /etc/passwd
- /home
if you use trusted
- /tcb
5. network tuning
- /etc/rc.config.d/nddconf

6. printers ??


You have to backup entire:
/etc
/sbin/init.d
/home

[Fred Ruffet]

As Slawomir says, if you backup /etc, you'll have a lot of things already backed up (hosts, rc.config.d,...)

. Have a look at /opt (may be some particular software installed)
. Look at the result of swlist -l bundle/product/fileset. May help you to find software to reinstall
. Don't forget to get new codewords for those under /var/adm/sw/.codewords

Regards,

Fred

[Cliff Lim Kok Hwee]

Guys, wondering is there any documents available for guidance?

thanks/cliff

[Bharat Katkar]

Hi,
Better to go thr' this link.
http://docs.hp.com/hpux/pdf/5990-7290.pdf

Regards,

[Cliff Lim Kok Hwee]

Hi Guys,

Wondering how do I migrate current 11.00 kernel configuration over to the new 11.11 installation?

thanks/cliff

[Bharat Katkar]

Hi,
I would suggest you to do Fresh Installation.
Points to be taken care are:

1. Take VG00 backup using make_recovery command so that in case of any problem you can atleast revert back immediately by restoring.

2. Note down configurations that you have done on your server. GOra has nicely elaborated the needed configuration file.(Keep this for your reference only)

3. Get new codewords, Application CD..etc that you may require further.

And then start with the fresh installation.
After OS installation is complete, refer you to earlier notings about System configuration and go further. Install your Application.

This way, it will be clean and fast. Only thing is you need to prepared and equiped with all resources (codewords, licenses, Application software etc.)

Hope that helps.
Regards,

[Trond Haugen]

I see two posible paths here.

1. As mentioned make notes of the configuration. As you are swapping disks simply keep the old as fallback and install 11.11 on the new ones. If you have disk bays you may even be able to mount the old disks if you want to copy any files.

2. Make a ignote backup of your 11.0 system. Swap to the new disks and restore. Then do the upgrade.

Regards,
Trond

[Cliff Lim Kok Hwee]

Hi Guys,

Correct me if I am wrong, I will note down manually the current /stand/system file kernel settings and have it configured again once 11.11 is installed proper?

thanks/cliff

[Fred Ruffet]

About kernel conf, you can get modified kernel params at end of /stand/system. Note that default values may not be the same on the new versions. Increased params may already be larger on 11i.

Regards,

Fred

[Bharat Katkar]

HI,
You don't have to worry about the system and kernel..SImply note down the kernel parameters you changed for your Application Tuning... otherwise it should be okay with new kernel that will be formed.
Also any parameter if you had changed anything for better network and OS performance but this one you should be doing only if any performance issue comes up.

Hope that helps.
Regards,