Create Bootable Hirens CD on USB using Linux

Overview This howto outlines the procedures for creating a bootable version of Hirens on a USB drive using Linux. The problem arises when attempting to create the the bootable USB using the traditional (and generally reliable) isohybrid + dd approach. There is one fine which needs to be renamed, and in order to do that, Read More …

Tracking Memory and Swap Usage

In Linux, there is a relatively simple way to track memory and swap usage by process.  First look to the directory “/procs”.  Here you will see a list of subdirectories named by running process ids (PIDs).  Each subdirectory contains files and other directories that contain useful information about that process.  For the metrics we want, Read More …

Generate a Sitemap and Submit it for Google Indexing

Overview Google search engine indexing can be facilitated through the creation of a sitemap. Once the map has been created, you will need to sign-up for Google Webmaster Tools (now called “Search Console) and Google Analytics accounts. Webmaster tools will permit you to submit your site for indexing. Once your web properties are indexed, you Read More …

Quick Globus Endpoint Setup on LInux

The system is running CentOS 6.6. Here is the condensed version for the impatient. Install repo: curl -LOs http://toolkit.globus.org/ftppub/globus-connect-server/globus-connect-server-repo-latest.noarch.rpm Import repo GPG key: rpm –import http://www.globus.org/ftppub/globus-connect-server/RPM-GPG-KEY-Globus Install Globus packages: yum install globus-connect-server-repo-latest.noarch.rpmyum install globus-connect-server Assuming you already have a Globus account, sign-in, and go to “Manage Data->Manage Endpoints->Add Endpoint”. Create your endpoint and assign it Read More …

Java GC is NOT “over-utilization”

The Java VM has a built-in “garbage collection” (GC) feature that clears and compacts the Java memory space (heap). This prevents out of memory (OOM) conditions, and improves application performance. I’ve noted that the admins at the high-performance computing (HPC) center at my place of regular employment, INSIST on classifying the brief spawning of GC Read More …

Running MySQL on ROCKS Cluster

The ROCKS Cluster uses MySQL for internal bookkeeping of the cluster configuration. But what happens if you want to run MySQL as part of a user-based application? Can this be done without tampering with or otherwise corrupting the ROCKS databases? Yes it can. ROCKS runs a MySQL binary (the foundation) generally found here (under the Read More …