A little known feature that we make good use of in Oracle VM is called dm nfs. Basically the ability to create a device mapper device directly on an nfs-based file/filesystem. We use this in Oracle VM 3 if your shared storage for the cluster is nfs based.
Oracle VM clustering relies on the OCFS2 clusterstack/filesystem that is native in the kernel (uek2/2.6.39-x). When we create an HA-enabled pool, we create, what we call, a pool filesystem. That filesystem contains an ocfs2 volume so that we can store cluster-wide data.
In this blog entry I try to document how to enable Kerberos. This procedure was actually created and followed during a project at one of my customers.
– windows 2008R2 server
– domain : milkyway.space.com
– Kerberos installed and enabled
– DES encryption default disabled
– database : crater
– version : 126.96.36.199.4
– windows 7 enterprise edition
– 188.8.131.52 client
I found this needed a blog post because most of the customers I meet, just install their Redhat/Oracle Linux environment and start using it out of the box in production. I believe this list should be included in every post-installation procedure.
Nice article on the oracle website about the internals of OVM by Gregory King and Suzanne Zorn.
I really like these kind of articles.
Check it out : http://www.oracle.com/technetwork/articles/servers-storage-admin/networking-ovm-x86-1873548.html
We just introduced a new yum repository/channel on http://public-yum.oracle.com called the playground channel. What we started doing is the following:
When a new stable mainline kernel is released by Linus or GregKH, we internally build RPMs to test it and do some QA work around it to keep track of what's going on with the latest development kernels. It helps us understand how performance moves up or down and if there are issues, we try to help look into them and of course send that stuff back upstream.
So, Day 1 of the Virtualization SIG on www.ioug.org is over. All by all an interesting day.
The schedule was :
Session 1 – Oracle on Oracle VM – Expert Panel
Session 2 – Maximizing your Virtualized Environment with Oracle VM
Session 3 – The RAC OVM Templates and the new DeployCluster tool on OVM3
Session 4 – The Latest on Oracle VM
Session 5 – Simplifying Application Deployment in Cloud Using Virtual Assemblies and EM 12c