一、故障
公司的jenkins因为日志量太大把磁盘占满，进而影响了其他程序，仔细一看日志文件“/var/log/jenkins/jenkins.log”几分钟产生了30G的日志
日志内容部分如下：
[DNSQuestion@1398141921 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@752862545 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@2077034887 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@545402584 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@1546918866 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@236169288 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@494995772 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@742654138 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@1347581035 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@1125173185 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@1447947894 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@1518364117 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@431141826 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]
[DNSQuestion@1549353466 type: TYPE_IGNORE index 0, class: CLASS_UNKNOWN index 0, name: ]二、解决
上面内容主要是因为DNS查询错误，返回了所有的日志数据，解决方法：
【系统管理】=》【system log】=>【日志级别】=》【Name: javax.jmdns,Level: off】
详情图如下：
1）
2）
