Jenkins Essentials: Continuous Integration – setting up the stage for a DevOps culture


In agile development practices, developers need to integrate their work frequently to fix bugs or to create a new feature or functionality. To integrate all work efficiently and verify it is an error-prone and time-consuming manual task. Jenkins is used specifically for continuous integration, helping to enforce the principles of agile development. Continue reading “Jenkins Essentials: Continuous Integration – setting up the stage for a DevOps culture”

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Location of Maven repository in Windows & Linux


Location of Maven repository

Maven repository is a folder located in system that stores all project’s dependencies  such as jars, pom.xml, and other files which are downloaded by Maven.

Wheb user execute and mvn target, all dependency files will be stored in your Maven repository in local system.

By default, Maven local repository’s name is .m2

In Windows, Location of Maven repository is C:Users<<login user name>>.m2

In Linux Location of Maven repository is /root/.m2 (Go to root, Press ctrl+h to display hidden files)

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Download Jenkins Plugins


Download Jenkins Plugins without compiling source code

I have recently started working on Jenkins and faced many difficulties to download source code from Git and compile them using Maven.

Due to Internet Connection restriction, It was difficult to download source code and run mvn package command that download many jar files from remote repository to your local repository to run source files and create .hpi file in target folder.

To download ready made .hpi file of Jenkins Plugin use https://updates.jenkins-ci.org/download/plugins/

Happy Downloading and Happy Jenkinsing!

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How to Install Jenkins on Windows 8 and Linux


To Install Jenkins on Windows 8 and Linux, CentOS, Ubuntu and Other Linux Distribution follow the below steps

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Download Jenkins from http://jenkins-ci.org/

Download Link is – http://mirrors.jenkins-ci.org/war/latest/jenkins.war

Install Java

Set JAVA_HOME in Environment Variable

Execute java –jar Jenkins.war

C:>java -jar jenkins.war
Running from: C:jenkins.war
webroot: $user.home/.jenkins
21 May, 2014 12:55:22 AM winstone.Logger logInternal
INFO: Beginning extraction from war file
21 May, 2014 12:55:27 AM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: jetty-8.y.z-SNAPSHOT
21 May, 2014 12:55:39 AM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: NO JSP Support for , did not find org.apache.jasper.servlet.JspServlet
Jenkins home directory: C:Usersmitesh.jenkins found at: $user.home/.jenkins
21 May, 2014 12:55:41 AM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: Started SelectChannelConnector@0.0.0.0:8080
21 May, 2014 12:55:41 AM winstone.Logger logInternal
INFO: Winstone Servlet Engine v2.0 running: controlPort=disabled
21 May, 2014 12:55:41 AM jenkins.InitReactorRunner$1 onAttained
INFO: Started initialization
21 May, 2014 12:56:13 AM jenkins.InitReactorRunner$1 onAttained
INFO: Listed all plugins
21 May, 2014 12:56:13 AM jenkins.InitReactorRunner$1 onAttained
INFO: Prepared all plugins
21 May, 2014 12:56:13 AM jenkins.InitReactorRunner$1 onAttained
INFO: Started all plugins
21 May, 2014 12:56:13 AM jenkins.InitReactorRunner$1 onAttained
INFO: Augmented all extensions
21 May, 2014 12:56:13 AM jenkins.InitReactorRunner$1 onAttained
INFO: Loaded all jobs
21 May, 2014 12:56:19 AM org.jenkinsci.main.modules.sshd.SSHD start
INFO: Started SSHD at port 53167
21 May, 2014 12:56:19 AM jenkins.InitReactorRunner$1 onAttained
INFO: Completed initialization
21 May, 2014 12:56:19 AM hudson.TcpSlaveAgentListener <init>
INFO: JNLP slave agent listener started on TCP port 53168
21 May, 2014 12:56:19 AM hudson.WebAppMain$3 run
INFO: Jenkins is fully up and running
Effective SlaveRestarter on master: null

Visit http://localhost:8080/manage

jenkins Dashboard

Done!

Install Maven on Windows 8


Maven on Windows 8

Download Apache Maven from http://maven.apache.org/download.cgi. Different versions are available so user can select the version as per need.

Extract the files from the compressed file of apache-maven-3.2.1-bin.zip

Add Two Environment Variables, M2 and M2_HOME

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Right Click on My Computer and select Properties

My Computer Properties

Click on Advance System Settings

Advance System Settings

It will open System Properties Dialogue box; click on Environment Variables

System Properties

Click on New and set M2_HOME

M2_HOME

Set M2

M2

M2 and M2_HOME

Edit PATH by appending C:apache-maven-3.2.1bin

Path Variable

Open the Command Prompt again and execute mvn –version command

mvn version command

Done!

 

How to Install Java in CentOS 6.3


Install Java in CentOS

Create a Local Repository for CentOS by using existing packages on Distribution Media or make sure that Internet is accessible from the virtual machine

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List of all available JDK on the system

[root@localhost ~]# yum search java | grep -i –color JDK
ldapjdk-javadoc.x86_64 : Javadoc for ldapjdk
icedtea-web.x86_64 : Additional Java components for OpenJDK – Java browser
java-1.6.0-openjdk.x86_64 : OpenJDK Runtime Environment
java-1.6.0-openjdk-demo.x86_64 : OpenJDK Demos
java-1.6.0-openjdk-devel.x86_64 : OpenJDK Development Environment
java-1.6.0-openjdk-javadoc.x86_64 : OpenJDK API Documentation
java-1.6.0-openjdk-src.x86_64 : OpenJDK Source Bundle
java-1.7.0-openjdk.x86_64 : OpenJDK Runtime Environment
java-1.7.0-openjdk-demo.x86_64 : OpenJDK Demos
java-1.7.0-openjdk-devel.x86_64 : OpenJDK Development Environment
java-1.7.0-openjdk-javadoc.noarch : OpenJDK API Documentation
java-1.7.0-openjdk-src.x86_64 : OpenJDK Source Bundle
ldapjdk.x86_64 : The Mozilla LDAP Java SDK

[root@localhost ~]# yum install java-1.7.0-openjdk java-1.7.0-openjdk-devel
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: centosmirror.go4hosting.in
* extras: centosmirror.go4hosting.in
* updates: centosmirror.go4hosting.in
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package java-1.7.0-openjdk.x86_64 1:1.7.0.55-2.4.7.1.el6_5 will be installe                                                                                        d
–> Processing Dependency: jpackage-utils >= 1.7.3-1jpp.2 for package: 1:java-1.                                                                                        7.0-openjdk-1.7.0.55-2.4.7.1.el6_5.x86_64
–> Processing Dependency: xorg-x11-fonts-Type1 for package: 1:java-1.7.0-openjd                                                                                        k-1.7.0.55-2.4.7.1.el6_5.x86_64
–> Processing Dependency: tzdata-java for package: 1:java-1.7.0-openjdk-1.7.0.5                                                                                        5-2.4.7.1.el6_5.x86_64
–> Processing Dependency: libjpeg.so.62(LIBJPEG_6.2)(64bit) for package: 1:java                                                                                        -1.7.0-openjdk-1.7.0.55-2.4.7.1.el6_5.x86_64
–> Processing Dependency: libgif.so.4()(64bit) for package: 1:java-1.7.0-openjd                                                                                        k-1.7.0.55-2.4.7.1.el6_5.x86_64
—> Package java-1.7.0-openjdk-devel.x86_64 1:1.7.0.55-2.4.7.1.el6_5 will be in                                                                                        stalled
–> Running transaction check
—> Package giflib.x86_64 0:4.1.6-3.1.el6 will be installed
—> Package jpackage-utils.noarch 0:1.7.5-3.12.el6 will be installed
—> Package libjpeg.x86_64 0:6b-46.el6 will be obsoleted
—> Package libjpeg-turbo.x86_64 0:1.2.1-3.el6_5 will be obsoleting
—> Package tzdata-java.noarch 0:2014b-1.el6 will be installed
—> Package xorg-x11-fonts-Type1.noarch 0:7.2-9.1.el6 will be installed
–> Processing Dependency: ttmkfdir for package: xorg-x11-fonts-Type1-7.2-9.1.el                                                                                        6.noarch
–> Processing Dependency: ttmkfdir for package: xorg-x11-fonts-Type1-7.2-9.1.el                                                                                        6.noarch
–> Running transaction check
—> Package ttmkfdir.x86_64 0:3.0.9-32.1.el6 will be installed
–> Finished Dependency Resolution

Dependencies Resolved

================================================================================
Package                    Arch     Version                    Repository
Size
================================================================================
Installing:
java-1.7.0-openjdk         x86_64   1:1.7.0.55-2.4.7.1.el6_5   updates    26 M
java-1.7.0-openjdk-devel   x86_64   1:1.7.0.55-2.4.7.1.el6_5   updates   9.4 M
libjpeg-turbo              x86_64   1.2.1-3.el6_5              updates   174 k
replacing  libjpeg.x86_64 6b-46.el6
Installing for dependencies:
giflib                     x86_64   4.1.6-3.1.el6              base       37 k
jpackage-utils             noarch   1.7.5-3.12.el6             base       59 k
ttmkfdir                   x86_64   3.0.9-32.1.el6             base       43 k
tzdata-java                noarch   2014b-1.el6                updates   147 k
xorg-x11-fonts-Type1       noarch   7.2-9.1.el6                base      520 k

Transaction Summary
================================================================================
Install       8 Package(s)

Total download size: 36 M
Is this ok [y/N]: y
Downloading Packages:
(1/8): giflib-4.1.6-3.1.el6.x86_64.rpm                   |  37 kB     00:01
(2/8): java-1.7.0-openjdk-1.7.0.55-2.4.7.1.el6_5.x86_64. |  26 MB     18:30
(3/8): java-1.7.0-openjdk-devel-1.7.0.55-2.4.7.1.el6_5.x86_64.rpm                                                                                | 9.4 MB     07:02
(4/8): jpackage-utils-1.7.5-3.12.el6.noarch.rpm                                                                                                  |  59 kB     00:00
(5/8): libjpeg-turbo-1.2.1-3.el6_5.x86_64.rpm                                                                                                    | 174 kB     00:09
(6/8): ttmkfdir-3.0.9-32.1.el6.x86_64.rpm                                                                                                        |  43 kB     00:01
(7/8): tzdata-java-2014b-1.el6.noarch.rpm                                                                                                        | 147 kB     00:05
(8/8): xorg-x11-fonts-Type1-7.2-9.1.el6.noarch.rpm                                                                                               | 520 kB     00:16
————————————————————————————————————————————————————————
Total                                                                                                                                    23 kB/s |  36 MB     26:19
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : jpackage-utils-1.7.5-3.12.el6.noarch                                                                                                                 1/9
Installing : giflib-4.1.6-3.1.el6.x86_64                                                                                                                          2/9
Installing : libjpeg-turbo-1.2.1-3.el6_5.x86_64                                                                                                                   3/9
Installing : tzdata-java-2014b-1.el6.noarch                                                                                                                       4/9
Installing : ttmkfdir-3.0.9-32.1.el6.x86_64                                                                                                                       5/9
Installing : xorg-x11-fonts-Type1-7.2-9.1.el6.noarch                                                                                                              6/9
Installing : 1:java-1.7.0-openjdk-devel-1.7.0.55-2.4.7.1.el6_5.x86_64                                                                                             7/9
Installing : 1:java-1.7.0-openjdk-1.7.0.55-2.4.7.1.el6_5.x86_64                                                                                                   8/9
Erasing    : libjpeg-6b-46.el6.x86_64                                                                                                                             9/9
Verifying  : ttmkfdir-3.0.9-32.1.el6.x86_64                                                                                                                       1/9
Verifying  : xorg-x11-fonts-Type1-7.2-9.1.el6.noarch                                                                                                              2/9
Verifying  : 1:java-1.7.0-openjdk-devel-1.7.0.55-2.4.7.1.el6_5.x86_64                                                                                             3/9
Verifying  : tzdata-java-2014b-1.el6.noarch                                                                                                                       4/9
Verifying  : libjpeg-turbo-1.2.1-3.el6_5.x86_64                                                                                                                   5/9
Verifying  : giflib-4.1.6-3.1.el6.x86_64                                                                                                                          6/9
Verifying  : 1:java-1.7.0-openjdk-1.7.0.55-2.4.7.1.el6_5.x86_64                                                                                                   7/9
Verifying  : jpackage-utils-1.7.5-3.12.el6.noarch                                                                                                                 8/9
Verifying  : libjpeg-6b-46.el6.x86_64                                                                                                                             9/9

Installed:
java-1.7.0-openjdk.x86_64 1:1.7.0.55-2.4.7.1.el6_5        java-1.7.0-openjdk-devel.x86_64 1:1.7.0.55-2.4.7.1.el6_5        libjpeg-turbo.x86_64 0:1.2.1-3.el6_5

Dependency Installed:
giflib.x86_64 0:4.1.6-3.1.el6                  jpackage-utils.noarch 0:1.7.5-3.12.el6      ttmkfdir.x86_64 0:3.0.9-32.1.el6      tzdata-java.noarch 0:2014b-1.el6
xorg-x11-fonts-Type1.noarch 0:7.2-9.1.el6

Replaced:
libjpeg.x86_64 0:6b-46.el6

Complete!
You have mail in /var/spool/mail/root
[root@localhost ~]#

RHEL and CentOS Linux install OpenJDK into /usr/lib/jvm/ directory

Set the JAVA_HOME class path variable

export JAVA_HOME="/usr/lib/jvm/jre-1.7.0-openjdk.x86_64

 

CloudBees Java PaaS Definition


CloudBees Definition

CloudBees supports Java SE and Java EE. It also includes Tomcat, MySQL, Commercial relational databases, BIG data – MongoDB and CouchDB in its stack. It brings quite a few unique features into the Java PaaS landscape, especially continuous integration – an entire development / testing / deployment management in the cloud. Application deployment requires no special framework and it is easy to migrate in or out application to or from CloudBees. Developers can use Jenkins service to have CloudBees automatically and continuously build, test, check in, and check out code in the repository. CloudBees supports Command Line Tools, IDE tools such as eclipse, Web-based Console, Web access to logs, Third party developer / testing services and API access. New Relic monitoring is a part of the CloudBees Ecosystem; user can turn monitoring on for any of the applications with a few clicks. In CloudBees, the New Relic monitoring agent is automatically deployed into your application at the time of deployment. CloudBees also supports sending mail from applications with the SendGrid Service for RUN@cloud.

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