jenkins install on centos 6

# jenkins install on centos 6

## yum jenkins2.39

## Backbround:

Minimun Recommended configuration.

java 7

- 256MB free memory
- 1GB+ free disk space
- close iptables setting(:8080)

创建 tester 用户作为jenkins_user, workspace为 tester 家目录下的jenkins目录.不过2.39ver己经默认做好了，我以默认 jenkins。

# http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
    # wget http://download.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.rpm?AuthParam=1510230385_ceaed34236c9f59c2bc7f7285d47aef0

jenkins requires java in order to run.centos need to install Open Java Developemnt Kit.

# yum install java-1.7.0-openjdk

# java -version

```java
  java version "1.7.0_45"
  OpenJDK Runtime Environment (rhel-2.4.3.3.el6-x86_64 u45-b15)
  OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)
```

download repo

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

correct user by jenkins.

# vi /etc/sysconfig/jenkins

```java
jenkins 2.39 ver, home/user had define.

...
  JENKINS_HOME="/var/lib/jenkins"
  JENKINS_USER="jenkins"
  JENKINS_PORT="8080"
   ......

```

# cat /etc/passwd
```
    jenkins:x:496:493:Jenkins Continuous Integration Server:/var/lib/jenkins:/bin/false
```

## open service to firefox.

# chkconfig jenkins on
    # service jenkins start

## firefox open jenkins servers addr

# http://yourjenkinsservers.com:8080
    # netstat -taunlp |grep 8080

```python

tcp        0      0 :::8080           :::*            LISTEN      2731/java
```

## login jenkins user and password.

# cat /var/lib/jenkins/secrets/initialAdminPassword

```python

b37e6612f60c4aad9b8cb56f9cc364b9

```

Done