CentOS下jenkins安裝與配置

安裝jdk

在usr下建立java目錄，使用命令下載jdk壓縮包。這裏是安裝在/usr/java，或者能夠使用yum安裝到/usr/lib/jvm。

$ wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u102-b14/jdk-8u102-linux-x64.tar.gz

或者在本地先下載好再使用scp命令上傳

$ scp /本地路徑/jdk-8u102-linux-x64.tar.gz 登陸用戶名@服務器ip:/usr/java

解壓完刪除壓縮包

$ tar xvf jdk-8u102-linux-x64.tar.gz

配置環境變量，將如下腳本添加到/etc/profile文件的末尾

JAVA_HOME=/usr/java/jdk1.8.0_102
JRE_HOME=/usr/java/jdk1.8.0_102/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH

最後reboot重啓，執行java -version，結果顯示已安裝成功

$ java -version
java version "1.8.0_102"
Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)

安裝jenkins

添加jenkins庫

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

接下來使用yum命令來安裝

$ yum install jenkins

下載rpm包過程當中報錯

Downloading Packages:
http://pkg.jenkins.io/redhat/jenkins-2.16-1.1.noarch.rpm: [Errno 14] PYCURL ERROR 18 - "transfer closed with 66371436 bytes remaining to read"
Trying other mirror.


Error Downloading Packages:
  jenkins-2.16-1.1.noarch: failure: jenkins-2.16-1.1.noarch.rpm from jenkins: [Errno 256] No more mirrors to try.

大概就是下載速度太慢關閉了，這裏的解決辦法是屢次執行install直到下完或者仍是到自已機器下載再上傳到rpm所在目錄，下載連接http://pkg.jenkins-ci.org/red...，個人rpm目錄是/var/cache/yum/x86_64/6/jenkins/packages。

執行如下命令，能夠看到jenkins已是開機自啓動的系統服務，它在/etc/init.d目錄下生成了jenkins文件

$ chkconfig --list | grep jenkins

jenkins 0:關閉 1:關閉 2:關閉 3:啓用 4:關閉 5:啓用 6:關閉
jenkins的war包存放在/usr/lib/jenkins目錄下，配置文件jenkins在/etc/sysconfig，我這裏修改端口爲8888

## Type:        integer(0:65535)
## Default:     8080
## ServiceRestart: jenkins
#
# Port Jenkins is listening on.
# Set to -1 to disable
#
JENKINS_PORT="8888"

能夠看到jenkins的主目錄

## Path:        Development/Jenkins
## Description: Jenkins Continuous Integration Server
## Type:        string
## Default:     "/var/lib/jenkins"
## ServiceRestart: jenkins
#
# Directory where Jenkins store its configuration and working
# files (checkouts, build reports, artifacts, ...).
#
JENKINS_HOME="/var/lib/jenkins"

jenkins建立job和slave都會在這個目錄下生成數據，如今是空的，數據遷移時能夠將該目錄下的數據拷貝到新機器的同個目錄下。第一次訪問控制檯後會生成初始數據。

啓動jenkins，直接使用系統服務的啓動命令，結果報錯，找不到java

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

找到/etc/init.d/jenkins文件，在變量candidates後面添加一個路徑/usr/java/jdk1.8.0_102/bin/java。

candidates="
/etc/alternatives/java
/usr/lib/jvm/java-1.6.0/bin/java
/usr/lib/jvm/jre-1.6.0/bin/java
/usr/lib/jvm/java-1.7.0/bin/java
/usr/lib/jvm/jre-1.7.0/bin/java
/usr/lib/jvm/java-1.8.0/bin/java
/usr/lib/jvm/jre-1.8.0/bin/java
/usr/bin/java
/usr/java/jdk1.8.0_102/bin/java
"

再啓動就成功了

$ service jenkins start
Starting Jenkins                                           [  OK  ]

最後在瀏覽器訪問jenkins，輸入：jenkins服務器地址:8888

後續寫如何用jenkins實現一鍵自動部署