IT Solutions Technology Blog

Remove old Kernels & APT Cache and clean up leftover package archives and clear out old unused Linux kernels

root@pve-s740-01:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 6.8G 0 6.8G 0% /dev
tmpfs 1.6G 2.7M 1.6G 1% /run
/dev/mapper/pve-root 24G 24G 0 100% /
tmpfs 7.7G 40M 7.7G 1% /dev/shm
efivarfs 128K 88K 36K 71% /sys/firmware/efi/efivars
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.7G 0 7.7G 0% /tmp
/dev/sdb1 916G 119G 751G 14% /mnt/pve/BackupUSB
/dev/sdc2 511M 9.1M 502M 2% /boot/efi
/dev/fuse 128M 20K 128M 1% /etc/pve
tmpfs 1.0M 0 1.0M 0% /run/credentials/getty@tty1.service
tmpfs 1.6G 4.0K 1.6G 1% /run/user/0

root@pve-s740-01:~# apt-get clean

root@pve-s740-01:~# apt-get autoremove
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
The following packages will be REMOVED
…

root@pve-s740-01:~#

root@pve-s740-01:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 6.8G 0 6.8G 0% /dev
tmpfs 1.6G 2.7M 1.6G 1% /run
/dev/mapper/pve-root 24G 13G 11G 56% /
tmpfs 7.7G 46M 7.7G 1% /dev/shm
efivarfs 128K 88K 36K 71% /sys/firmware/efi/efivars
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.7G 0 7.7G 0% /tmp
/dev/sdb1 916G 119G 751G 14% /mnt/pve/BackupUSB
/dev/sdc2 511M 9.1M 502M 2% /boot/efi
/dev/fuse 128M 20K 128M 1% /etc/pve
tmpfs 1.0M 0 1.0M 0% /run/credentials/getty@tty1.service
tmpfs 1.6G 4.0K 1.6G 1% /run/user/0

root@pve-s740-01:~# apt autoremove –purge
REMOVING:
proxmox-kernel-6.14.11-8-pve-signed* proxmox-kernel-6.17.13-7-pve-signed*
proxmox-kernel-6.17.13-3-pve-signed*

Summary:
Upgrading: 0, Installing: 0, Removing: 3, Not Upgrading: 0
Freed space: 2,613 MB
…

root@pve-s740-01:~#

root@pve-s740-01:~# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
udev 7071332 0 7071332 0% /dev
tmpfs 1613956 2740 1611216 1% /run
/dev/mapper/pve-root 25058324 10347648 13412452 44% /
tmpfs 8069776 46800 8022976 1% /dev/shm
efivarfs 128 88 36 71% /sys/firmware/efi/efivars
tmpfs 1024 0 1024 0% /run/credentials/systemd-journald.service
tmpfs 5120 0 5120 0% /run/lock
tmpfs 8069780 0 8069780 0% /tmp
/dev/sdb1 960302076 124374804 787072848 14% /mnt/pve/BackupUSB
/dev/sdc2 523248 9240 514008 2% /boot/efi
/dev/fuse 131072 20 131052 1% /etc/pve
tmpfs 1024 0 1024 0% /run/credentials/getty@tty1.service
tmpfs 1613952 4 1613948 1% /run/user/0

root@pve-s740-01:~#

Vacuum Systemd Logs and System logs can grow out of control if debugging is active. Limit your logs to a manageable size (e.g. 50MB)

root@pve-s740-01:~# journalctl –vacuum-size=50M
…
Vacuuming done, freed 0B of archived journals from /run/log/journal.
Vacuuming done, freed 2.3G of archived journals from /var/log/journal/7068d0aa65f8428e8f68dc1963ac122f.
Vacuuming done, freed 0B of archived journals from /var/log/journal.

root@pve-s740-01:~#