目录
磁盘情况
调查服务器系统盘符资源占用问题（资源占用清单已发），清理无用的资源释放空间:
| 总分区 | 根目录 | 文件夹 | ||
| 40G | ||||
| /opt/ | 6.0G | |||
| /opt/xht_test | 790M | |||
| /opt/xht_test/apache-tomcat-8088 | 239M | |||
| /opt/xht_test/apache-tomcat-28080 | 308M | |||
| /opt/xht_test/apache-tomcat-18080 | 245M | |||
| /opt/datasynchronize | 3.7G | |||
| /opt/datasynchronize/apache-tomcat-8.5.12/webapps/datasynchronize/generateFile/ | 3.6G | |||
| /opt/test-wy | 363M | |||
| /opt/xht_new_lib | 175M | |||
| /opt/xht | 214M | |||
| /opt/xht/help | 3.1M | |||
| /opt/xht/download | 1.9M | |||
| /opt/xht/images | 1.4M | |||
| /opt/xht/js | 6.6M | |||
| /opt/xht/webService | 48K | |||
| /opt/xht/sounds | 52K | |||
| /opt/xht/app | 492K | |||
| /opt/xht/lib | 5.6M | |||
| /opt/xht/WEB-INF | 178M | |||
| /opt/xht/META-INF | 8.0K | |||
| /opt/xht/forestar-ui | 3.9M | |||
| /opt/xht/upload | 14M | |||
| /opt/zmnsetupfiles | 824M | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/webapps | 6.0M | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/logs | 4.0K | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/conf | 228K | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/lib | 7.4M | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/work | 4.0K | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/bin | 816K | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12/temp | 4.0K | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12 | 15M | |||
| /opt/zmnsetupfiles/apache-tomcat-8.5.12.tar.gz | 9.0M | |||
| /opt/zmnsetupfiles/jdk-8u121-linux-x64.gz | 175M | |||
| /opt/zmnsetupfiles/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz | 625M | |||
| /usr/ | 18G | |||
| /usr/local | 16G | |||
| /usr/local/aegis | 244M | |||
| /usr/local/src | 212M | |||
| /usr/local/nginx | 565M | |||
| /usr/local/mysql | 15G | |||
| /usr/share | 410M | |||
| /usr/lib | 809M | |||
| /usr/lib/modules | 341M | |||
| /usr/lib/locale | 102M | |||
| /usr/lib/firmware | 275M | |||
| /usr/java | 358M | |||
| /var/ | 14G | |||
| /var/log | 2.8G | |||
| /var/log/journal | 2.7G | |||
| /var/lib | 2.2G | |||
| /var/lib/docker/volumes | 591M | |||
| /var/lib/docker/overlay2 | 1.5G | |||
| /var/cache | 145M | |||
| /var/swapfile | 8.1G | |||
| 总共40G，已经使用38G，红色是占用最多的 | ||||
第一步： 处理/opt路径下的tomcat服务转移到/vxdbdata/ 或者直接删除不再使用的tomcat。
第二步：删除/var/log下大文件 ，/var/swapfile交换区文件暂不改动（后面有操作检查释放可以删除）。
第三步：转移/usr/local/mysql安装路径到/vxdbdata。
磁盘清理
核对磁盘占用
磁盘使用情况查询df -h
磁盘目录层级查询 du -h --max-depth=1
系统磁盘空间
关键是处理易处理不会有问题的路径。
/opt + 6%
转移/opt文件到/xvdbdata/opt
cp -a /opt /xvdbdata/opt
系统系统盘获得6%磁盘空间。
/var/log/journal +7%
使用以下命令保留一周日志：https://www.cnblogs.com/zuokun/p/10996044.html
1）只保留近一周的日志
journalctl --vacuum-time=1w
2）只保留500MB的日志
journalctl --vacuum-size=500M
3）直接删除 /var/log/journal/ 目录下的日志文件
rm -rf /var/log/journal/f9d400c5e1e8c3a8209e990d887d4ac1
获得7%系统空间。
/var/swapfile +22%
https://blog.csdn.net/seven_tester/article/details/82628866
https://www.cnblogs.com/CandiceW/p/10317918.html
下图可见：Swap功能已被卸载
时间很久了2017/12/21.可见此文件已经很久不用了。
磁盘释放至63%。
/usr/local/mysql >50% 未处理
Mysql 占用系统空间15G
服务在使用，暂不执行。
