jenkins log文件突然占满磁盘空间

　　今天早上同事反应jenkins构建job发生异常，于是登录机器查看发现磁盘空间已满。进一步排查之后发现jenkins的catalina.out文件已占满磁盘空间。

用tail看了下日志后面都是关于DNS的。

[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: ]

网上搜了下解决方法。预算删除大日志文件，并在jenkins配置里面设置了日志项

然后重启jenkins，完成。