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jenkins-2.235.3-1.1 安装 使用

更新历史
2020-08-04 增加jenkins的清华镜像设置
2020-11-14 国内镜像源设置
2025-03-22 增加脚本样例

安装

官方指南

前提

JDK1.8以上 安装

RedHat系 YUM安装

centOS 8 安装稳定版本如下：

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wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
yum install jenkins

如果网络慢， 可以手工安装 清华镜像, 如下 安装版本jenkins-xxxx.noarch.rpm

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wget https://mirrors.tuna.tsinghua.edu.cn/jenkins/redhat-stable/jenkins-xxx.noarch.rpm
yum install -y jenkins-xxxx.noarch.rpm

安装结果

  • daemon ： /etc/init.d/jenkins
  • user ： jenkins （查看passwd，获得工作路径）
  • Log file ： /var/log/jenkins/jenkins.log
  • configuration ： /etc/sysconfig/jenkins (建议修改JENKINS_HOME到空间较大的路径)
  • 初始密码 ：查看 /var/log/jenkins/jenkins.log

启动/停止

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systemctl start/stop/restart jenkins
systemctl enable jenkins ##开机自动启动

ps: 别忘了关闭防火墙或者设置防火墙



选推荐插件



插件管理 升级站点 设置

由于长城的原因， 建议把插件站点设置成国内的。




特别注意
如果是操作系统是CentOS 8 执行如下命令， 重启 jenkins

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update-crypto-policies --set LEGACY

配置

JDK

一般yum安装的 JAVA_HOME 为 /usr/lib/jvm/java

maven

安装maven
yum安装的 M2_HOME 为 /usr/share/maven

插件

这些必须安装：

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Git plugin
Git client plugin
GitLab Plugin
maven plugin

Manage Jenkins –> Configure Global Security

Manage Jenkins –> Configure System

配置 JDK， Jenkins Location， Git plugin， Gitlab

ssh-key

如果连接 Source Code Management 采用 ssh 连接， 需要先生成 ssh-key

ssh-keygen -t rsa -C "your_email@your_email.com" -b 4096

注意生成目录， jenkins ssh-key的默认目录为： /var/lib/jenkins/下的 .ssh/ , 以 jenkins 用户的home目录 为准。

New Item

mavne project

root project

Maven project name
Description

Discard Old Builds
Source Code Management

Build
Root POM：pom.xml
Goals and options： clean deploy -N

sub project

其他 参照上方，
Post Steps –> Excute shell (启动tomcat等Web server)
shell可能长的像下面这样

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#!/bin/bash -ex
JAVA_OPTS="-Xms768m -Xmx1000m -XX:PermSize=512m -XX:MaxPermSize=1024m"
cd /data/apache-tomcat/
bin/catalina.sh stop 35 -force
rm -rf /data/apache-tomcat/webapps/xxxxxxxx.war /data/apache-tomcat/webapps/xxxxxxxx
cp $WORKSPACE/target/xxxxxxxx.war /data/apache-tomcat/webapps
## required, or tomcat will be killed by jenkins. The value can be set to anything.
BUILD_ID=please_do_not_kill_me 
sleep 20s
bin/catalina.sh start

项目权限

项目权限

样例








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#!/bin/bash -ex
PID=`ps -ef|grep jenkins|grep /bin/java|grep -v grep|awk '{print $2}'`
echo $PID
if [ "" != "$PID" ]; then
 echo "killing $PID"
 kill -9 $PID
else
 echo "leyun not running!"
fi
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#!/bin/bash -ex
## JAVA_OPTS="-Xms768m -Xmx1000m -XX:PermSize=512m -XX:MaxPermSize=1024m"
# sleep 3s

cd /data/leyun/apache-tomcat-8.5.60/
# bin/catalina.sh stop 35 -force
rm -rf /data/leyun/apache-tomcat-8.5.60/webapps/ROOT.war /data/leyun/apache-tomcat-8.5.60/webapps/ROOT 
cp $WORKSPACE/target/leyun-server-center-service.war /data/leyun/apache-tomcat-8.5.60/webapps/ROOT.war
## required, or tomcat will be killed by jenkins. The value can be set to anything.
BUILD_ID=please_do_not_kill_me 
sleep 10s

bin/catalina.sh start

完整shell

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#!/bin/bash -ex
## JAVA_OPTS="-Xms768m -Xmx1000m -XX:PermSize=512m -XX:MaxPermSize=1024m"
VER="yaoquansu-infra-biz-1.0.0-SNAPSHOT"
# 定义端口变量
PORT=9301
jdwp_PORT=19301
# 目录
TARGET_DIR="/data/yqs/yqs2/yaoquansu-infra-biz"

PID=$(jps | grep "$VER" | awk '{print $1}') || true
if [ -z "$PID" ]; then
  echo "yaoquansu-infra-biz not running!"
else
  echo "Found process PID: $PID."
  echo "killing $PID"
  kill -9 $PID
fi

# 目录check
if [ -d "$TARGET_DIR" ]; then
    echo "目录已存在: $TARGET_DIR"
else
    echo "目录不存在，正在创建: $TARGET_DIR"
    mkdir -p "$TARGET_DIR"
    # 检查是否创建成功
    if [ $? -ne 0 ]; then
        echo "错误: 目录创建失败！"
        exit 1
    fi
fi


rm -rf "$TARGET_DIR"/lib
mv $WORKSPACE/yaoquansu-infra-biz/target/lib "$TARGET_DIR"/
mv $WORKSPACE/yaoquansu-infra-biz/target/"${VER}".jar "$TARGET_DIR/"
## required, or tomcat will be killed by jenkins. The value can be set to anything.
BUILD_ID=please_do_not_kill_me
cd "$TARGET_DIR/"
pwd

if [ -f "output.log" ]; then
  rm output.log
fi


sleep 1s

# 执行启动命令 # -Dloader.path="./lib" \
nohup java \
  -Xmx1000M \
  -XX:MetaspaceSize=512M \
  -XX:+UseG1GC \
  -XX:+HeapDumpOnOutOfMemoryError \
  "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:${jdwp_PORT}" \
  -Dloader.path="./lib" \
  -jar "${VER}.jar" \
  --server.port="${PORT}" \
  --spring.profiles.active=uat \
  > output.log 2>&1 &

PID=$(lsof -ti :"$PORT" -sTCP:LISTEN) || true
if [ -z "$PID" ]; then
  echo "yaoquansu-infra-biz  running!"
else
  echo "Found process fail"
fi

问题

第一次ssh连接 gitServer

Source Code Management 中 git 第一次ssh连接， 会有 host error
解决方法：

  • jenkins 用户登录， /etc/passwd 中 jenkins用户的默认shell 需要修改成 bin/bash
  • 执行命令 ssh git@gitServerIP, 接受yes
  • 还原 jenkins用户的默认shell为 bin/false

ssh 非默认22端口

vim /var/lib/jenkins/.ssh/config

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Host gitlab.xianzhongwang.com
Port 34
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chmod 644 /var/lib/jenkins/.ssh/config

网络导致日志疯狂增长

一旦jenkins所在的服务器的网络出现问题， jenkins的日志文件（/var/log/jenkins/jenkins.log）大小会疯狂快速增长，直到撑爆硬盘
日志内容大概为

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Jul 29, 2015 5:04:59 AM javax.jmdns.impl.constants.DNSRecordClass classForIndex
WARNING: Could not find record class for index: -1
Jul 29, 2015 5:04:59 AM javax.jmdns.impl.DNSIncoming$MessageInputStream readName
SEVERE: bad domain name: possible circular name detected. Bad offset: 0xffffffff at 0xb6
Jul 29, 2015 5:04:59 AM javax.jmdns.impl.constants.DNSRecordType typeForIndex
SEVERE: Could not find record type for index: -1
Jul 29, 2015 5:04:59 AM javax.jmdns.impl.DNSIncoming readQuestion
SEVERE: Could not find record type: dns[query,108.61.99.169:53227, length=184, id=0x5c78, flags=0x3030, questions=6
questions:
        [DNSQuestion@84075318 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: 0\x00\x01\x00\x00\x00\x00\x00\x00\x09\x5F\x73\x6.\x72\x76\x69\x63\x65\x73\x07\x5F\x64\x6E\x73\x2D\x73\.4\x04\x5F\x75\x64\x70\x05\x6C\x6F\x63\x61\x6C\x00\x00\.C\x00\x01ϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿ.]
        [DNSQuestion@9629900 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        [DNSQuestion@788455775 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        [DNSQuestion@1602108435 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        [DNSQuestion@1486500959 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        [DNSQuestion@1944352362 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]]
        question:      [DNSQuestion@84075318 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: 0\x00\x01\x00\x00\x00\x00\x00\x00\x09\x5F\x73\x6.\x72\x76\x69\x63\x65\x73\x07\x5F\x64\x6E\x73\x2D\x73\.4\x04\x5F\x75\x64\x70\x05\x6C\x6F\x63\x61\x6C\x00\x00\.C\x00\x01ϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿϿ.]
        question:      [DNSQuestion@9629900 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        question:      [DNSQuestion@788455775 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        question:      [DNSQuestion@1602108435 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        question:      [DNSQuestion@1486500959 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
        question:      [DNSQuestion@1944352362 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
   0: 5c7830305c783030 5c7830305c783030 5c7830305c783031 5c7830305c783030     \x00\x00 \x00\x00 \x00\x01 \x00\x00
  20: 5c7830305c783030 5c7830305c783030 5c7830395c783546 5c7837335c783635     \x00\x00 \x00\x00 \x09\x5F \x73\x65
  40: 5c7837325c783736 5c7836395c783633 5c7836355c783733 5c7830375c783546     \x72\x76 \x69\x63 \x65\x73 \x07\x5F
  60: 5c7836345c783645 5c7837335c783244 5c7837335c783634 5c7830345c783546     \x64\x6E \x73\x2D \x73\x64 \x04\x5F
  80: 5c7837355c783634 5c7837305c783035 5c7836435c783646 5c7836335c783631     \x75\x64 \x70\x05 \x6C\x6F \x63\x61
  a0: 5c7836435c783030 5c7830305c783043 5c7830305c783031                      \x6C\x00 \x00\x0C \x00\x01

jenkins官方的issue，目前尚未fixed

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https://issues.jenkins-ci.org/browse/JENKINS-10160

临时解决方案：
修改jenkins的java启动参数，编辑 /etc/sysconfig/jenkins， 看看效果

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JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true -Dhudson.DNSMultiCast.disabled=true -Dhudson.udp=-1"