Posts Categorized: Technical Blog

Cloudera Challenge 2014

Yesterday, Cloudera released the score reports for their Data Science Challenge 2014 and I was really ecstatic when I received mine with a “PASS” score! This was a real challenge for me and I had to put a LOT of effort into it, but it paid off in the end! Note: I won’t bother you…

Auditing Files in Linux

Stat command in Linux can be used to display a file or a file system status. I came across an issue in RHEL4 where a file’s ‘Change time’ is far ahead than the ‘Modification time’ without a change in uid, gid and mode. # stat /etc/php.ini File: `/etc/php.ini’ Size: 45809 Blocks: 96 IO Block: 4096…

Lock Timeout Error While Creating Database

Recently I worked on a issue where a third-party application was failing during the installation. Below was the error returned by the Application. Lock request time out period exceeded. (Microsoft SQL Server, Error: 1222) The application was failing while it was trying to create a database. The application seemed to have a default timeout setting…

Comparing CPU Throughput of Azure and AWS EC2

After observing CPU core sharing with Amazon Web Services EC2, I thought it would be interesting to see if Microsoft Azure platform exhibits the same behavior. Signing up for Azure’s 30-day trial gives $200 in credit to use over the next 30-day period: more than enough for this kind of testing. Creating a new virtual…

SaltStack for Remote Parallel Execution of Commands

There are many scenarios when a SysAdmin has to do a “box walk” of the entire infrastructure to execute a command across many servers. This is universally accepted as one of the less glamorous parts of our job. The larger the infrastructure, the longer these box walks take, and the greater chance that human error…

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