1、使用rpm方式安裝的jenkins目錄
先關閉jenkins
systemctl stop jenkins
rpm安裝後jenkins的目錄爲
/var/lib/jenkins/
2、把老jenkins的目錄拷貝出來,替換掉新安裝的jenkins目錄
先移除新安裝的jenkins目錄,整個jenkins目錄移除
rm -rf /var/lib/jenkins
再移動老的目錄到這個目錄下
mv /usr/local/jenkins /var/lib
再把權限全部修改爲jenkins
chown -R jenkins:jenkins /var/lib/jenkins/
啓動jenkins
systemctl start jenkins
再登陸新的jenkins,就可以重新只用老jenkins裏面的東西了