System information

52 Sharing and maintaining SLES 10 SP2 Linux under z/VM
...
/etc/init.d/boot.findself: changing (escaped) gpok222\.endicott\.ibm\.com to gpo
k227.endicott.ibm.com in /etc/HOSTNAME
/etc/init.d/boot.findself: changing gpok222 to gpok227 and IP address in /etc/ho
sts
/etc/init.d/boot.findself: changing (escaped) 9\.60\.18\.222 to 9.60.18.227 in /
etc/sysconfig/network/ifcfg-qeth-bus-ccw-0.0.0600
You should be able to start an SSH session to the new IP address. The df -h command
should show file systems identical or simlar to the following:
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/dasdb1 341M 79M 245M 25% /
udev 121M 136K 121M 1% /dev
/dev/dasda1 41M 13M 26M 34% /boot
/dev/dasdi1 333M 20M 297M 7% /opt
/dev/dasdh1 1.6G 666M 839M 45% /usr
/dev/dasdg1 706M 64M 607M 10% /var
/dev/dasdag1 706M 60M 610M 9% /local/.var
tmpfs 121M 0 121M 0% /tmp
1.7 Maintaining systems
In the original IBM Redpaper, the maintenance of the read-only and read-write systems was
described at a high level. These words are unchanged in section 1.7.1, “Original maintenance
methodology”, immediately following.
In this updated paper, a new section was added, 1.7.2, “A more detailed maintenance
methodology” on page 53 with more specifics on how maintenance is done at Penn State
University.
1.7.1 Original maintenance methodology
The following two aspects of maintenance are discussed:
򐂰 Updating the gold disks
򐂰 Updating the cloned servers
Updating the gold disks
If you need to modify the systems on the gold disks, they should probably be done in tandem;
that is, modify both the read-write and read-only systems. In between times of maintenance,
the read-write system on S10RWMNT, S10RWTST and the 11Bx disks of S10GOLD should all be
identical. Similarly, the read-only system on S10ROGLD and the 21Bx disks of S10GOLD should
be the same.
To make any change, for example to add an RPM, the following steps are recommended.
1. Copy S10RWMNT to S10RWTST with the MNT2TST EXEC.
2. IPL the read-write system on S10RWTST.
3. Make the change (add the RPM) and test.
4. When the system is completely tested, copy the system to S10RWMNT with the TST2MNT
EXEC.
5. Recreate a read-only root system from S10RWMNT to S10ROGLD via mnt2rogld.sh.