How to install and configure Jenkins on Amazon EC2, Cloud-Ubuntu 12.04, 14.04 LTS

jenkins-featuresJenkins

Jenkins is an open source Continuous Integration tool that monitors execution of repetitive jobs, such as building a software project or jobs ran by cron. It’s written in Java programming language and designed to test and report on isolated changes in a larger code in real time.

It is Originally started as Hudson in 2004 but due to a dispute in 2011 they forked and continued under the name, Jenkins.

It can be used to build software, deploy software, or websites to various endpoints or to run unit/behaviour-driven software tests.

So the builds on top of Continuous Integration are Continuous Deployment and Delivery where after the successful tests you will be able to run, instantly and automatically release with the latest version of your codebase. We can say Jenkins makes deployment a non-issue and helps you speed up your development.

Basically, we can say that “Jenkins is a Continuous Integration server which is the best practice of running your tests on a non-developer machine.”

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How to Install TeamViewer 11 on Ubuntu System

TeamViewermobileapps-remotecontrol

As we know that,  “TeamViewer”  is a popular  software used for  system’s (PC) remote access and support . TeamViewer software can connect to any PC or server, so you can remote control your partner’s PC  from anywhere by Internet as if you were sitting right in front of it. For the remote session to work the partner has to start a small application, which does not require installation or administrative rights.

TEAMVIEWER HAS LOT OF ADVANTAGES IT SHOWS, WHY SHOULD BE USE OF TEAMVIEWER

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Command Line Tools to Monitoring & Managing Linux Performance/Process

originalA process is a running instance of a launched, executable program. So being a System Engineer it is not easy to monitor Linux server/system performances and keep them up and running, here in this post i will cover mostly used command line to monitoring that might be useful for those who are taking care of Linux servers/systems as Linux Administrator.

Real- time Process Monitoring by ‘ top ‘:

The ‘ top ‘ command line, top program show a dynamic view of system processes and displaying a summary or  it is used to dipslay all the running and active real-time processes in ordered list. It display CPU usage, Memory usage, Swap Memory, Cache Size, Buffer Size, Process PID, User, Commands and much more. It also shows high memory and cpu utilization of a running processess.  And ‘ top ‘ command continuously refreshes at a configurable interval and provides above summary in a column view. The top command is more useful for system administrator to monitor and take correct action when required. Continue reading

Linux Basic Commands for Beginners

basic_linux_commandLinux Basic Commands and Examples of them

Commands: A instruction  for a computer or device to perform a specific task know as ‘Command’. It give through terminal as input (by user), so also we can say that command is an interpreter.

[gaurav@gauravx ~]$____

Command line:  A command line is a text-based interface which can be use to input instruction to a computer system. A Linux command line is provided by a program called “The Shell“.  So in previous post shell are covered, where or as all know there are many Shells have been developed.  So The default shell for users in Linux is the BASH Shell (Borne Again shell) and also it is in MAC OSx.

Instruction: Open terminal ( ctrl+shift t ) it displays a string like “ [user@hostname~]$ _ or  [root@hostname~]$#_” mean of this, it is waiting for a command from the user  ‘it is called Shell prompt’.

So command entered at the shell prompt have three basic parts Continue reading

Linux Boot Process- How it executes

run_levelLinux Boot Process 

Basically “Boot Process A CPU gets its instructions from memory. The CPU reads instruction from the BIOS and searches for the hard disks, CD drives and other hardware. The BIOS program looks at the first sector for boot code.

The boot process for Linux goes through several stages. Different systems follows different stage here in Linux  have 6 stages of Boot.

 

  • BIOS   ( Basic Input/Output System )   Boot
  • MBR    ( Master boot Record )
  • GRUB  ( Grand Unified Boot Loader )
  • Kernel
  • init
  • run level init 0 – init 6 )

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Elasticsearch & Installation

Elasticsearch               Selection_004

Elasticsearch is a popular open-source search and analytics engine for use cases such as log analytics, real-time application monitoring, and click stream analytics.

Elasticsearch  is a search server based on Lucene. Elasticsearch is developed in Java and is released as open source under the terms of the Apache License. Elasticsearch is the most popular enterprise search engine followed by “Apache Solr”, also based on Lucene.

Lucene: Lucene is a “free and open-source information retrieval software library”, originally written in Java by “Doug Cutting”. It is supported by the Apache Software Foundation and is released under the Apache Software License. Also K/A Apache Lucene.) Continue reading