jenkins节点的jdk版本过低时如何曲线救国

问题：Slave节点的jdk版本过低导致jenkins服务器无法与之建立正常通信，无法传递gerrit相关参数，直接升级jdk对版本机的潜在影响较大，虽放弃。

解决办法：<jdk版本低的节点 + jdk版本正常节点 + jenkins服务器>  然后通过执行中间节点上的脚本实现间接控制构建目的；

1 pipeline代码

import groovy.transform.Field;

timeout(time: 180, unit: 'MINUTES') {
    echo "The timeout limit is 180 minutes."
}

getcodenodename = "${getcodenodename}"

node(getcodenodename) {
    def changeBranch = "change-${GERRIT_CHANGE_NUMBER}-${GERRIT_PATCHSET_NUMBER}"
    stage "build cgs_v3 64 and 32 rpm"
    echo "build cgs_v3 64 and 32 rpm"
        dir ("/home/svp/") {
            sh """
            if [ ! -d "xxxxx_V3" ]; then
                 echo "clone code"
                 git clone ssh://admin@10.xxx.xxx.xxx:29418/${GERRIT_PROJECT}
            fi
            cd ZXEmbsys-KLinux_CGS_V3
            git fetch origin ${GERRIT_REFSPEC}:${changeBranch}
            git checkout ${changeBranch}
            git log -n2 --format=short
            sh /home/cxy/cgs_v3_build.sh
            """
        }
}

　2 拷贝可用Node的公钥到实际编译机器的 ~/.ssh/authorized_keys，实现免密登录

   3 编写可用节点的执行脚本

#!/bin/bash
#author:cxy
#date:  2019/05/15

# fetch git project update
echo "<<<<< start scp git update to cgs_v3_build_64 >>>>>>"
scp -r /home/svp/xxx_V3/* root@10.xxx.xxx.xxx:/git/XXXX_V3/
if [ $? -ne 0 ];then
    echo "###### scp to v3_64 failed  ######"
    exit -1
fi

echo "<<<<< start scp git update to cgs_v3_build_32 >>>>>>"
scp -r /home/svp/XXX_V3/* root@10.xxx.xxx.xxx:/git/XXX_V3/
if [ $? -ne 0 ];then
    echo "###### scp to v3_32 failed  ######"
    exit -1
fi

# login in 74 and build v3_64
ssh 10.xxx.xxx.xxx '/xxx/rpm_build'
if [ $? -eq 0 ];then
   echo "<<<<<<    build v3_64 success   >>>>>>"
else
   echo "######    fail to build v3_64   ######"
   exit -1
fi


# login in 73 and build v3_32
ssh 10.xxx.xxx.xxx '/xxx/rpm_build'
if [ $? -eq 0 ];then
   echo "<<<<<<    build v3_32 success   >>>>>>"
else
   echo "######    fail to build v3_32   ######"
   exit -1
fi

　　说明：黑色加粗部分表示登录目标IP并再目标机上执行单引号''内的脚本；另外一种办法是使用expect脚本，执行办法 expect scp_xxx.exp 如果文件有可执行权限，./scp_xxx.exp

#!/usr/bin/expect

set usernmae "root"
set password "xxxx"
set A_SERVERIP [lindex $argv 0]
set TEST_FILE [lindex $argv 1]
set timeout 20

spawn ssh ip_address
expect {
                "(yes/no)" { send "yes\r"; exp_continue }
                "password:" { send "$password\r" }
}

expect -re "\](\$|#) "

send "touch /tmp/aaa\r"
expect -re "\](\$|#) "

send "exit\r"