ubuntu18.04安装Jenkins

jenkins需要java支持

首先到java官网下载最新的压缩包

tar -zxvf jdk-8u191-linux-x64.tar.gz
sudo mv jdk1.8.0_191  /usr/local/jdk1.8

设置java环境变量

1. 方案一：修改全局配置文件，作用于所有用户：vim /etc/profile

export JAVA_HOME=/usr/local/jdk1.8
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=.:${JAVA_HOME}/bin:$PATH

2. 方案二：修改当前用户配置文件，只作用于当前用户：vim ~/.bashrc 设置与上一样
3. 使修改的配置立刻生效

##对应方法一：
source /etc/profile 
##对应方法二：
source ~/.bashrc

4. 检查是否安装成功

java -version

安装jenkins

wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add - 
sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list' 
sudo apt-get update 
sudo apt-get install jenkins

jenkins默认端口8080，可到/etc/init.d/jenkins中修改

sudo service jenkins start

启动报错

ERROR: No Java executable found in current PATH: /bin:/usr/bin:/sbin:/usr/sbin
If you actually have java installed on the system make sure the executable is in the aforementioned path and that 'type -p java' returns the java executable path

建立软连接再次启动

sudo ln -s /usr/local/jdk1.8/bin/java /usr/bin/java