1)下载文件
cd /opt/xcache
wget http://download.surfront.com/updates/ruijie-xcache/3.8.6/ruijie-xcache-upgrade-3.8.6.tar.gz
2)完成升级
/etc/init.d/xcached upgrade /opt/xcache/ruijie-xcache-upgrade-3.8.6.tar.gz