• 查看占用磁盘的大文件 find / -size +100M -exec ls -lh {} ;

[root@izbp16m9x4u8kej1ty6vxaz majj-shell]# find / -size +100M -exec ls -lh {} \;
-r-------- 1 root root 128T 2月  18 18:27 /proc/kcore
find: ‘/proc/18422/task/18422/fd/6’: 没有那个文件或目录
find: ‘/proc/18422/task/18422/fdinfo/6’: 没有那个文件或目录
find: ‘/proc/18422/fd/6’: 没有那个文件或目录
find: ‘/proc/18422/fdinfo/6’: 没有那个文件或目录
-rw-r-----+ 1 root systemd-journal 112M 9月  24 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-000000000013accd-0005764d6d2cd38d.journal
-rw-r-----+ 1 root systemd-journal 104M 6月  30 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-0000000000000001-00056eebfce14912.journal
-rw-r-----+ 1 root systemd-journal 104M 9月   2 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000000e0b58-0005745d973f733a.journal
-rw-r-----+ 1 root systemd-journal 104M 8月  14 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-000000000009d945-000572e28765ba2a.journal
-rw-r-----+ 1 root systemd-journal 112M 10月  1 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000001689dc-000576d4c3ca7e4a.journal
-rw-r-----+ 1 root systemd-journal 104M 8月   1 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-0000000000071167-000571cbb3aae6d0.journal
-rw-r-----+ 1 root systemd-journal 104M 8月   8 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000000874eb-0005725dfabcc0b9.journal
-rw-r-----+ 1 root systemd-journal 104M 8月  27 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000000ca6b4-000573d3b55f2bc9.journal
-rw-r-----+ 1 root systemd-journal 104M 7月  12 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-000000000002d60a-0005704f57e45a33.journal
-rw-r-----+ 1 root systemd-journal 104M 9月  16 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-000000000010cf56-000575743030b8ba.journal
-rw-r-----+ 1 root systemd-journal 112M 9月  27 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-000000000015215c-000576938a3d9fb5.journal
-rw-r-----+ 1 root systemd-journal 112M 10月 26 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000001dc665-000578ae38a1cfad.journal
-rw-r-----+ 1 root systemd-journal 104M 7月  25 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-000000000005a23b-00057138e79d26af.journal
-rw-r-----+ 1 root systemd-journal 112M 10月 30 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000001f4868-0005790fcf39a120.journal
-rw-r-----+ 1 root systemd-journal 104M 8月  20 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000000b3fb7-000573576959aba7.journal
-rw-r-----+ 1 root systemd-journal 112M 9月  20 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-0000000000123a87-000575fd0dc29252.journal
-rw-r-----+ 1 root systemd-journal 104M 7月  18 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000000439b4-000570cd31aee119.journal
-rw-r-----+ 1 root systemd-journal 112M 10月 15 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000001ac362-000577d349c21391.journal
-rw-r-----+ 1 root systemd-journal 112M 10月 21 2018 /var/log/journal/f0f31005fb5a436d88e3c6cbf54e25aa/system@2d71f35ca0c445eba03209ae25721eb7-00000000001c437f-000578372fad2f17.journal
-rw-r----- 1 root root 143M 2月  18 15:22 /var/lib/docker/containers/dfe61eab85f571dc408f5700ff15e6e8bbb8f1c96b0f191976a705867cdaf67f/dfe61eab85f571dc408f5700ff15e6e8bbb8f1c96b0f191976a705867cdaf67f-json.log
-rw-r----- 1 root root 105M 2月  18 18:22 /var/lib/docker/containers/06be92545c032d4bcbcc87bb40ef157542c6344afee43d4eded9b32e4500dada/06be92545c032d4bcbcc87bb40ef157542c6344afee43d4eded9b32e4500dada-json.log
-rw-r----- 1 root root 4.4G 2月  18 15:22 /var/lib/docker/containers/3e89b5270d381877a66b0e4a5b630b9885afa98aaebfbabefb32549cd7cd3f62/3e89b5270d381877a66b0e4a5b630b9885afa98aaebfbabefb32549cd7cd3f62-json.log
-rw-r--r-- 1 root root 380M 2月  15 2019 /home/majj/software/jdk-8u201-linux-x64.tar
-rw-r--r-- 1 root root 102M 10月 31 2018 /usr/lib/locale/locale-archive

• 发现很多 .journal 的文件 搜索 原因 https://blog.csdn.net/ithomer/article/details/89530790

2、journalctl 命令自动维护文件大小

1）只保留近一周的日志

journalctl --vacuum-time=1w