7 mars 2016

Installer Jenkins sur RedHat

... ou toute autre distributions basée sur RedHat: RHEL, CentOS, Fedora ou Scientific Linux

Des versions récentes sont disponibles sur les dépôt yum


Ajouter Jenkins dans yum.repo.d et l'installer:
sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo
sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key
sudo yum install jenkins

Installation de la version stable

Il y a aussi une version LTS (Long Term Support):
sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo
sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key
sudo yum install jenkins

Installation de JAVA

Jenkins requière Java, par défaut on peut installer OpenJDK:
sudo yum install java
Note: If running CentOS, ensure you follow the guide below.
sudo service jenkins start/stop/restart
sudo chkconfig jenkins on
Note: if you get the following error message, ensure that Java has been installed:

Starting jenkins (via systemctl):  Job for jenkins.service failed. See 'systemctl status jenkins.service' and 'journalctl -xn' for details.

What does this package do?

    Jenkins will be launched as a daemon on startup. See /etc/init.d/jenkins for more details.
    The 'jenkins' user is created to run this service. If you change this to a different user via the config file, you must change the owner of /var/log/jenkins, /var/lib/jenkins, and /var/cache/jenkins.
    Log file will be placed in /var/log/jenkins/jenkins.log. Check this file if you are troubleshooting Jenkins.
    /etc/sysconfig/jenkins will capture configuration parameters for the launch.
    By default, Jenkins listen on port 8080. Access this port with your browser to start configuration.  Note that the built-in firewall may have to be opened to access this port from other computers.  (See http://www.cyberciti.biz/faq/disable-linux-firewall-under-centos-rhel-fedora/ for instructions how to disable the firewall permanently)
    A Jenkins RPM repository is added in /etc/yum.repos.d/jenkins.repo

Désactiver le firewall

firewall-cmd --zone=public --add-port=8080/tcp --permanent
firewall-cmd --zone=public --add-service=http --permanent
firewall-cmd --reload

firewall-cmd --list-all

Important Note on CentOS Java

Jenkins requires Java in order to run, however yum install jenkins does not enforce that java is already installed. Check to make sure that you already hava java installed by running java -version. To further make things difficult for CentOS users, the default CentOS version of Java is not compatible with Jenkins. Jenkins typically works best with a Sun implementation of Java, which is not included in CentOS for licensing reasons.

If you get output similar to the following, it means you're using the default (GCJ) version of Java, which will not work with Jenkins:

java -version
java version "1.5.0"
gij (GNU libgcj) version 4.4.6 20110731 (Red Hat 4.4.6-3)

Pour corriger cela, vous pouvez désinstaller la version openjdk et installer la version sun-compatible

Désintaller le package:
yum remove java
Installer la version Sun-compatible:
 yum install java-1.7.0-openjdk
Depending on your version of CentOS, the package name for OpenJDK may differ. Use yum search openjdk to check for the name of the package. If OpenJDK is not found at all through yum, you probably need to install the EPEL yum repository. After installation, you should be able to get the following output for java -version:

java -version
java version "1.7.0_79"
OpenJDK Runtime Environment (rhel- u79-b14)
OpenJDK 64-Bit Server VM (build 24.79-b02, mixed mode)

Traduction partielle de : https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+on+Red+Hat+distributions

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