Posts Categorized: Technical Blog

Deploying a Private Cloud at Home — Part 6

Today’s blog post is part six of seven in a series dedicated to Deploying a Private Cloud at Home, where I will be demonstrating how to configure controller node with legacy networking ad OpenStack dashboard for webgui. Feel free to check out part five where we configured compute node with OpenStack services. First load the admin variables…

High System Time on Windows Running in a VM

Recently I’ve seen an issue with CPU usage on a server running Windows 2003 Server in a VMware. This is a small Virtual Machine with just 2 cores allocated (which are possibly mapped to “threads” on a host level but I don’t know the details). For some reason very high System CPU time was reported…

Deploying a Private Cloud at Home — Part 5

Today’s blog post is part five of seven in a series dedicated to Deploying Private Cloud at Home, where I will be demonstrating how to configure Compute node and OpenStack services on the compute node. We have already installed the MySQL Python library on compute node in previous posts. Install OpenStack compute packages on the node yum…

An Introduction to Extended Data Types in Oracle 12c

One of the lesser known new features that comes as a boon to many developers and DBAs is the provision of implicit handling of large data strings using scalar data types like VARCHAR2 and RAW. When creating tables, each column must be assigned a data type, which determines the nature of the values that can…

Debugging High CPU Usage Using Perf Tool and vmcore Analysis

There are several tools and technologies available to debug deeper into high CPU utilization in a system; perf, sysrq, oprofile, vmcore, and more. In this post, I will narrate the course of debugging a CPU utilization issue using technologies like perf and vmcore. Following sar output is from a system which faces high %system usage. [root@prod-smsgw1…

Deploying a Private Cloud at Home — Part 4

Today’s blog post is part four of seven in a series dedicated to Deploying Private Cloud at Home, where I will be demonstrating how to configure Imaging and compute services on controller node. See my previous blog post where we began configuring Keystone Identity Service. Install the Imaging service yum install -y openstack-glance python-glanceclient Configure Glance (Imaging…

Deploying a Private Cloud at Home — Part 3

Today’s blog post is part three of seven in a series dedicated to Deploying Private Cloud at Home, where I will demonstrate how to configure OpenStack Identity service on the controller node. We have already configured the required repo in part two of the series, so let’s get started on configuring Keystone Identity Service. Install keystone on…

Oracle E-Business Suite Updates From OpenWorld 2014

Oracle OpenWorld has always been my most exciting conference to attend. I always see high energy levels everywhere, and it kind of revs me up to tackle new upcoming technologies. This year I concentrated on attending mostly Oracle E-Business Suite release 12.2 and Oracle 12c Database-related sessions. On the Oracle E-Business Suite side, I started…

Deploying a Private Cloud at Home — Part 2

Today’s blog post is part two of seven in a series dedicated to Deploying Private Cloud at Home, where I will demonstrate how to do basic configuration setup to get started with OpenStack. In my first blog post, I explained why I decided to use OpenStack. I am using a two-node setup in my environment, but you…

What is Continuous Integration?

Most companies want to deploy features faster, and fix bugs more quickly—at the same time, a stable product that delivers what the users expected is crucial to winning and keeping the trust of those users.  At face value, stability and speed appear to be in conflict; developers can either spend their time on features or on…

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