20 Zypper Command Examples to Manage Packages on SUSE Linux

by Karthikeyan Sadhasivam on April 13, 2015

SUSE Linux Logoyum is for CentOS and Redhat.

apt-get is for Debian and Ubuntu.

In the same way, zypper is for SUSE Linux.

Zypper is a command line tool for package management in OpenSUSE and SUSE Enterprise Linux platforms.
(more…)

AngularJSAngular.js is a client-side javascript framework developed and maintained by Google.

It is a MVW ( Model View Whatever ) framework.

It gives us the flexibility to choose the design pattern that we want to use in our web application.

It is introduced to make static html dynamic. In other words, it updates the view of the web application in sync with any change in the data ( Model ). It makes the view data driven.
(more…)

How to Sync and Start Redhat Cluster to Verify Failover Scenario

by Karthikeyan Sadhasivam on March 19, 2015

In the first part, we explained in detail on how to install and configure 2 Node RedHat Cluster.

We covered the following high-level steps in the previous tutorial:

  • Install and start RICCI cluster service
  • Create cluster on active node
  • Add a node to cluster
  • Add fencing to cluster
  • Configure failover domain
  • Add resources to cluster

In this tutorial, we’ll cover the following high-level steps to finish the cluster setup:
(more…)

How to Configure Linux Cluster with 2 Nodes on RedHat and CentOS

by Karthikeyan Sadhasivam on March 18, 2015

In an active-standby Linux cluster configuration, all the critical services including IP, filesystem will failover from one node to another node in the cluster.

This tutorials explains in detail on how to create and configure two node redhat cluster using command line utilities.

The following are the high-level steps involved in configuring Linux cluster on Redhat or CentOS:
(more…)

How to Add LDAP Users and Groups in OpenLDAP on Linux

by Karthikeyan Sadhasivam on February 24, 2015

To add something to the LDAP directory, you need to first create a LDIF file.

The ldif file should contain definitions for all attributes that are required for the entries that you want to create.

With this ldif file, you can use ldapadd command to import the entries into the directory as explained in this tutorial.
(more…)

Using cloud computing, we can access various business and consumer applications as tools or utilities over the internet.

It allows us to create, modify and customize the business applications online.

Cloud computing can be broadly classified into the following two models:
(more…)

Quick Apache Hadoop Admin Command Reference Examples

by Karthikeyan Sadhasivam on February 18, 2015

Hadoop LogoIf you are working on Hadoop, you’ll realize there are several shell commands available to manage your hadoop cluster.

This article provides a quick handy reference to all Hadoop administration commands.
(more…)

JMeter LogoJMeter is a desktop application that can be used to perform functional testing and load testing.

While the JMeter application itself is designed as pure Java application, it can be used to perform load testing of any kind of web application, including those that are written in PHP, .NET, etc.
(more…)