Installation under centos6.9 of jenkins learning

The following is a test installation under centos6.9:

Install jenkins under docker:

• Update yum source: yum -y update

• Install docker: yum -y install docker-io

• Start the docket service: service docker start

• Self-starting: chkconfig docker on

• Install jenkins: sudo docker pull jenkins

• Manually specify the jenkins installation directory: cd /home && mkdir jenkins_home

• Give the jenkins user the operating authority of the jenkins_home folder: sudo chown -R 1000 /home/jenkins_home

• Start jenkins Docker on port 8080 (if it is already occupied, you can change to another port): sudo docker run -p 8080:8080 -p 50000:50000 -v /home/jenkins_home:/var/jenkins_home jenkins

• To run in the background, use the following: sudo docker run -d -ti -p 8080:8080 -p 50000:50000 -v /home/jenkins_home:/var/jenkins_home jenkins

Visit 8080, enter the installation guide page, and find the initial password inside:

cat /home/jenkins_home/secrets/initialAdminPassword

**Direct installation: **

Install the java environment:

# cd /opt/
# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie""http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz"
# tar xzf jdk-8u91-linux-x64.tar.gz
 

Of course, it is necessary to uninstall the installed java environment in advance:

rpm -qa | grep -E '^open[jre|jdk]|j[re|dk]'

Configure java environment variables:

vim /etc/profile

Add the following at the bottom of the profile file:

export JAVA_HOME=/opt/jdk1.8.0_91
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

Update the configuration file to make the configuration take effect:

source /etc/profile

Add jenkins yum source:

wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo
rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.key

Install jenkins:

yum install jenkins

Start jenkins:

service jenkins start

Set jenkins to start automatically:

chkconfig jenkins on

If an error similar to the following occurs:

Starting Jenkins bash: /usr/bin/java: No such file or directory [FAILED]

It is because the default java path of jenkins is wrong, set as follows:

vi /etc/init.d/jenkins

Find the line /usr/bin/java, and add the following code below:

/opt/jdk1.8.0_91/bin/java

Then restart jenkins:

service jenkins start/stop/restart

If you still can't access it, try to close the linux firewall or allow port 8080 to pass through the firewall!

The full effect is as follows: