我的安装环境：jdk1.8， linux系统为：
[root@ipha-dev71-1 nmon]# cat /etc/redhat-release # Linux查看版本当前操作系统发行版信息
CentOS Linux release 7.4.1708 (Core)
1.下载jenkins
root用户登录xshell
[root@ipha-dev71-1 jenkins]# pwd
/home/jenkins # 进入到事先创建的jenkins目录
[root@ipha-dev71- jenkins]# wget http://mirrors.jenkins.io/war-stable/latest/jenkins.war
---- ::-- http://mirrors.jenkins.io/war-stable/latest/jenkins.war
Resolving mirrors.jenkins.io (mirrors.jenkins.io)... 52.202.51.185
Connecting to mirrors.jenkins.io (mirrors.jenkins.io)|52.202.51.185|:... connected.
HTTP request sent, awaiting response... Found
Location: http://mirrors.tuna.tsinghua.edu.cn/jenkins/war-stable/2.176.2/jenkins.war [following]
---- ::-- http://mirrors.tuna.tsinghua.edu.cn/jenkins/war-stable/2.176.2/jenkins.war
Resolving mirrors.tuna.tsinghua.edu.cn (mirrors.tuna.tsinghua.edu.cn)... 101.6.8.193, :f000:::::
Connecting to mirrors.tuna.tsinghua.edu.cn (mirrors.tuna.tsinghua.edu.cn)|101.6.8.193|:... connected.
HTTP request sent, awaiting response... OK
Length: (74M) [application/java-archive]
Saving to: ‘jenkins.war’ %[==============================================================================================================================>] ,, .2MB/s in .6s -- :: (28.2 MB/s) - ‘jenkins.war’ saved [/]
附：http://mirrors.jenkins.io/war-stable/latest/jenkins.war的获取方式
a.进入官网https://jenkins.io/download/
b.
鼠标放上右键-复制链接地址
2.启动jenkins
[root@ipha-dev71-1 jenkins]# pwd
/home/jenkins
[root@ipha-dev71-1 jenkins]# ll
total 75576
-rw-r--r-- 1 root root 77379386 Jul 15 23:22 jenkins.war
-rw------- 1 root root 4552 Aug 9 00:09 nohup.out
[root@ipha-dev71-1 chenjl]# nohup java -jar jenkins.war --httpPort=8080 & # 后台启动命令，注意在jenkins目录下执行
[root@ipha-dev71-1 .jenkins]# pwd
/root/.jenkins # jenkins安装后的默认路径
[root@ipha-dev71- chenjl]# cat /root/.jenkins/secrets/initialAdminPassword # 查看密码，将密码赋值到jenkins页面
3.浏览器访问：http://10.1.1.71:8080/
自定义安装插件：插件安装过程中可能部分插件安装失败，重试一下可能就安装成功
4.设置管理员
5.配置jenkins url
