我有一台 Digital Ocean VPS，配备 2GB RAM、50GB 空间和 1 个 vCPU。运行 Ubuntu Server 20.04 LTS
但是，我只剩下 16GB 了。进一步研究后，我发现我的 /var/lib 目录占用了 22GB。但是，当我查看这些文件夹时，我没有看到任何文件占用了那么多空间。
这是为 Wordpress 安装运行 LAMP。我有两个虚拟主机。/var/www 目录仅占用 6GB，我能够处理所有事情。
uname -a
Linux website 5.4.0-80-generic #90-Ubuntu SMP Fri Jul 9 22:49:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
aaron@website:/var/lib$ ls
AccountsService dpkg man-db phpmyadmin tpm
PackageKit fail2ban mecab plymouth ubuntu-advantage
apache2 fwupd misc polkit-1 ubuntu-release-upgrader
apt ghostscript mysql private ucf
boltd git mysql-files python unattended-upgrades
clamav grub mysql-keyring shim-signed update-manager
cloud initramfs-tools mysql-upgrade snapd update-notifier
command-not-found landscape os-prober snmp usbutils
dbus letsencrypt pam sudo vim
dhcp logrotate php systemd
aaron@eastonparkwiki:/var/lib$ dirsize
22G .
aaron@website:/var/lib$ dirdu
du: cannot read directory './apt/lists/partial': Permission denied
du: cannot read directory './mysql-keyring': Permission denied
du: cannot read directory './snapd/cookie': Permission denied
du: cannot read directory './snapd/cache': Permission denied
du: cannot read directory './snapd/void': Permission denied
du: cannot read directory './mysql': Permission denied
du: cannot read directory './mysql-files': Permission denied
du: cannot read directory './update-notifier/package-data-downloads/partial': Permission denied
du: cannot read directory './polkit-1': Permission denied
du: cannot read directory './AccountsService/users': Permission denied
du: cannot read directory './php/sessions': Permission denied
du: cannot read directory './private': Permission denied
du: cannot read directory './fwupd/gnupg': Permission denied
598M ./snapd/snaps
334M ./clamav
197M ./apt/lists
156M ./snapd/seed/snaps
51M ./mecab/dic/ipadic-utf8
40M ./mecab/dic/ipadic
32M ./dpkg/info
3.2M ./command-not-found
1.8M ./dpkg
636K ./fwupd/remotes.d/lvfs
608K ./usbutils
484K ./snapd/apparmor/profiles
324K ./ucf/cache
292K ./systemd/deb-systemd-helper-enabled
292K ./snapd/seccomp/bpf
200K ./dpkg/alternatives
164K ./cloud/instances/252343267/sem
144K ./systemd/catalog
112K ./ucf
108K ./cloud/instances/252343267
aaron@website:/var/lib$ ls -lha
total 212K
drwxr-xr-x 51 root root 4.0K Jun 28 12:12 .
drwxr-xr-x 14 root root 4.0K Jun 27 09:13 ..
drwxr-xr-x 4 root root 4.0K May 18 16:41 AccountsService
drwxr-xr-x 2 root root 4.0K Jun 27 09:11 PackageKit
drwxr-xr-x 5 root root 4.0K Jun 27 09:14 apache2
drwxr-xr-x 5 root root 4.0K Jul 23 15:52 apt
drwxr-xr-x 2 root root 4.0K Sep 10 2020 boltd
drwxr-xr-x 2 clamav clamav 4.0K Jul 23 16:00 clamav
drwxr-xr-x 8 root root 4.0K Jul 23 03:00 cloud
drwxr-xr-x 2 root root 4.0K Jul 23 11:58 command-not-found
drwxr-xr-x 2 root root 4.0K Jun 26 22:41 dbus
drwxr-xr-x 2 root root 4.0K Apr 10 2020 dhcp
drwxr-xr-x 7 root root 4.0K Jul 23 15:53 dpkg
drwxr-xr-x 2 root root 4.0K Jun 27 12:08 fail2ban
drwxr-xr-x 6 root root 4.0K Jun 27 09:14 fwupd
drwxr-xr-x 4 root root 4.0K Jun 27 09:15 ghostscript
drwxr-xr-x 2 root root 4.0K Mar 4 07:01 git
drwxr-xr-x 4 root root 4.0K May 18 16:41 grub
drwxr-xr-x 2 root root 4.0K Jul 23 06:20 initramfs-tools
drwxr-xr-x 2 landscape landscape 4.0K May 18 16:43 landscape
drwxr-xr-x 4 root root 4.0K Jul 23 06:09 letsencrypt
drwxr-xr-x 2 root root 4.0K Jul 23 00:00 logrotate
drwxr-xr-x 2 root root 4.0K May 18 16:43 man-db
drwxr-xr-x 3 root root 4.0K Jun 27 09:13 mecab
drwxr-xr-x 2 root root 4.0K Apr 15 2020 misc
drwx------ 9 mysql mysql 12K Jul 23 03:00 mysql
drwx------ 2 mysql mysql 4.0K Jun 27 09:14 mysql-files
drwx------ 2 mysql mysql 4.0K Jun 27 09:13 mysql-keyring
drwxr-xr-x 2 root root 4.0K May 11 07:49 mysql-upgrade
drwxr-xr-x 2 root root 4.0K Jun 4 2019 os-prober
drwxr-xr-x 2 root root 4.0K Jul 23 06:21 pam
drwxr-xr-x 4 root root 4.0K Jun 27 09:13 php
drwxr-xr-x 3 root root 4.0K Jun 27 09:16 phpmyadmin
drwxr-xr-x 2 root root 4.0K Nov 2 2020 plymouth
drwx------ 3 root root 4.0K May 18 16:39 polkit-1
drwx------ 2 root root 4.0K May 18 16:39 private
drwxr-xr-x 2 root root 4.0K May 18 16:39 python
drwxr-xr-x 3 root root 4.0K May 18 16:48 shim-signed
drwxr-xr-x 23 root root 4.0K Jul 23 14:50 snapd
drwxr-xr-x 2 root root 4.0K Aug 17 2020 snmp
drwxr-xr-x 3 root root 4.0K May 18 16:39 sudo
drwxr-xr-x 10 root root 4.0K Jun 28 11:55 systemd
drwxr-xr-x 2 tss tss 4.0K Dec 3 2019 tpm
drwxr-xr-x 3 root root 4.0K Jun 26 22:44 ubuntu-advantage
drwxr-xr-x 2 root root 4.0K Jul 17 18:49 ubuntu-release-upgrader
drwxr-xr-x 3 root root 4.0K Jun 28 12:12 ucf
drwxr-xr-x 2 root root 4.0K Jul 21 2020 unattended-upgrades
drwxr-xr-x 2 root root 4.0K Jun 26 22:42 update-manager
drwxr-xr-x 4 root root 4.0K Jul 23 15:53 update-notifier
drwxr-xr-x 2 root root 4.0K May 18 16:41 usbutils
drwxr-xr-x 3 root root 4.0K May 18 16:39 vim
对于为什么会发生这种情况以及如何补救，您有什么想法吗？
答案1
我忘记了我的 dirdu 别名没有 sudo。我发现它是一堆 mysql binlog。我已清除过时的 binlog，并设置了全局过期设置