Entries in the ' linux ' category
Check this out:
RHN Fail
Yeah, that’s what you see when you visit rhn.redhat.com — which you need to use to administer redhat subscriptions. I can’t get my servers to subscribe while the site’s down, and I …
In the last issue of my current consulting saga, Detecting and Resolving LAMP Stack Performance Problems, we talked about a Drupal site that was being brought offline every few hours due to poor tuning of the LAMP stack. With the default settings, a site isn’t going to take much …
As a sysadmin, we sometimes run into performance problems with multiple angles and portions. It’s sometimes not particularly obvious where the actual performance problem is, and resolving one problem that you can see might bring another couple of problems to the surface.
The below comes from a consulting gig that …
At the Sun OpenWorld conferene keynote today, there were a few new products listed in the Flash storage arena — most notably the F5100 that everyone’s jibber-jabbering about.
As a smaller customer, I’m far more interested in the SunFlash F20 PCIe card — which I don’t see …
- vSphere, SAN or iSCSI-related:
- Using iSCSI with vSphere – Pretty much the bible, they covered it all.
- 2TB drives are here, but Stephen Foskett identifies the issues with bringing them to the enterprise. In the same vein, he covers the death of RAID as a storage technology, and
…
Despite the recent pot-banging around the Sun/Oracle merger and the allegations that Sun’s getting it’s customer base stolen out from under it, I just pushed the button on a fairly large cluster with Sun as the hardware vendor.
Simply put, I couldn’t find machines with better stats for the …
It’s Monday morning. Your boss strolls into your office. You just finished with the trouble tickets from the weekend, and this is his favorite time to ruin your entire week. He says, “I have a project for you. I need a cluster with a primary and backup SAN that is …
We’re trying not to use ‘old stuff’ as we’re building out our new cluster, but we have a big need for nfs or some other ad-hoc shared filesystem designed for high i/o on content servers. We’d been using ocfs2, but it’s slower than molasses and doesn’t scale n-ward as you …
As a sysadmin who’s been getting into clustered virtualized hardware stuff, I’m unbelievably jealous of Wolfram Alpha’s custom Dell hardware (note: Youtube video with horrible music, I suggest hitting mute) — it’s a 2u, quad-board, dual-socket, quad-core system. You fit four servers into 2U of space. It’s essentially one …
If you’re running a cluster environment with shared resources, you need to have STONITH or some sort of fencing running.
A cluster is a complicated beast. It’s a community of machines that makes decisions. The decisions can be simple and only affect the cluster (i.e. which service runs where and …
categories
-
apple
centos
fedora
first application
goals
howto
linux
meta
mysql
opensuse
packagekit
photography
php
punditry
puppy
python
reading list
reviews
symfony
sysadmin
Uncategorized
vmware
webdev
wordpress
zend framework
subscribe
If you enjoy the content, consider subscribing to the feed(s).
Entries RSS
Post a Comment