Posts

Showing posts from July, 2009

Oracle VM CLI RPM is available

Oracle's virtualization solution, Oracle VM, now has a command line interface. This is mostly important to Linux administrators and those who'd like to be able write their own scripts and tools for working with Oracle VM (OVM). The OVM CLI works with Linux and Mac OSX (through a work-around). Read Wim Coekaerts Blog for details.

Red Hat Enterprise Linux 5.4 Bèta

Red Hat Enterprise Linux 5.4 Bèta is now available. Most interesting improvements, apart from the usual bug fixes, performance benefits and better hardware support, are the introduction of KVM virtualization (in addition to regular Xen-based virtualization). New hardware support in virtual environments through SRIOV (Single Root I/O for Virtualization), utilities for management of FCoE cards over Internet, FIPS-140 security certification and a libvirt Perl interface for virtualization. Read the release notes for full details.

Better yet is this announcement: "An important feature of any Red Hat Enterprise Linux update is that kernel and user APIs are unchanged, so that Red Hat Enterprise Linux 5 applications do not need to be rebuilt or re-certified. This situation extends to virtualized environments: with a fully integrated hypervisor, the application binary interface (ABI) consistency offered by Red Hat Enterprise Linux means that applications certified to run on Red Hat Enterp…

Easy subversion backups

Anyone using a subversion server heavily needs good backups of their code. svnadmin dump is a good way to make regular backups. Or the mirroring method may work well for you.

I found a really useful, simple, elegant and clean tool to backup SVN repos with: svnbackup by Doug Hellmann (don't let the name fool you!). His script utilizes the existing tools but adds value, which is excellent in my book. He dumps the svn repo using svnadmin, splits the repo into commits sets (100 by default) and compress them in the process. The greatest feature, IMHO, is however the ability to let the scripts scp the backups to a different server! Genius! Works likes a charm in 30 seconds!

Here is my daily cron job:

#!/bin/bash
# http://code.google.com/p/svnautobackup/
# create dump of main SVN repo(s)
/usr/local/bin/svnbackup.sh --scp userid@server:/data/users/userid /var/svn/repositories/svnrepo/
echo "***SVN io_se dumped" >> /var/log/messages


If you have more than one repo, build in a for-lo…

Dell OMSA MIB files

Got a handy little reference on the PowerEdge Linux mailing list over at Dell.

Someone mentioned the location of the OMSA MIB files that define what can be monitored, measured, etc. on a Dell server using IPMI. I was wondering where these MIBs were located because I might be able to use them myself for other purposes on that hardware. Anyway, the MIBs for OMSA/opt/dell/srvadmin/sm/mibs/dcstorag.mib