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Uncategorized
Capacity Planning
hardware
LVM
Performance
storage
Systems Administration
No downtme migration of mounted filesystem to new storage type
On LVM 1.0 Volume group, the task is no downtime storage migration. Hitachi to Pure…
Capacity Planning
hardware
LVM
Scripting
storage
Systems Administration
An xpinfo that works in hpvm guests and on non Hitachi storage
Hitachi shops faced annoyance times two: 1. xpinfo does not work on non-Hitachi storage for…
Networking
Security
Systems Administration
Handle with care: TCP wrappers /etc/hosts.allow
Real life story. DMZ based server dedicated to SFTP was configured with sshd rules in…
Scripting
Systems Administration
A Script to identify entries for a particular user
Starting a series on automation scripting. This one is meant to be run from a…
hpvm
Systems Administration
Getting rid of an incorrectly corrupt fileset
swlist -l fileset -a state | grep -E -v '^#|conf' ### VParProvider.VPAR-DOC corrupt If re-installation…
ServiceGuard
Removing a serviceguard package from a cluster.
First stop package umount any filesysytem Pull back vg's and disk. Then: sglabn2:root > cmviewcl…
Networking
Performance
Systems Administration
NFS with lots of small files:pump up performance
Three kernel parameters that might pump up NFS throughput. Your mileage may vary. kctune nfs_enable_write_behind=1…
Scripting
Systems Administration
Automated setboot check and correction
When you use drd to patch and update systems offline to reduce downtime there is…
Scripting
Systems Administration
Keeping track of san disks
HP-UX does not make it easy to keep track of SAN presented disks. HBA switch…
