Archive for the ‘Proxmox’ Category
Dienstag, Juni 9th, 2026
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:~#
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Dienstag, Mai 12th, 2026
root@pve-s740-03:/mnt# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 223.6G 0 disk
├─SSD–LVM–ThinPool-SSD–LVM–ThinPool_tmeta 252:0 0 2.2G 0 lvm
│ └─SSD–LVM–ThinPool-SSD–LVM–ThinPool-tpool 252:2 0 219G 0 lvm
│ └─SSD–LVM–ThinPool-SSD–LVM–ThinPool 252:3 0 219G 1 lvm
└─SSD–LVM–ThinPool-SSD–LVM–ThinPool_tdata 252:1 0 219G 0 lvm
└─SSD–LVM–ThinPool-SSD–LVM–ThinPool-tpool 252:2 0 219G 0 lvm
└─SSD–LVM–ThinPool-SSD–LVM–ThinPool 252:3 0 219G 1 lvm
sdb 8:16 0 465.8G 0 disk
└─sdb1 8:17 0 465.8G 0 part
sdc 8:32 1 57.3G 0 disk
├─sdc1 8:33 1 1007K 0 part
├─sdc2 8:34 1 512M 0 part /boot/efi
└─sdc3 8:35 1 56.8G 0 part
├─pve-swap 252:4 0 7G 0 lvm [SWAP]
├─pve-root 252:5 0 24.4G 0 lvm /
├─pve-data_tmeta 252:6 0 1G 0 lvm
│ └─pve-data 252:8 0 16.3G 0 lvm
└─pve-data_tdata 252:7 0 16.3G 0 lvm
└─pve-data 252:8 0 16.3G 0 lvm
root@pve-s740-03:~# ls -l /dev/disk/by-uuid/*
lrwxrwxrwx 1 root root 10 May 12 16:34 /dev/disk/by-uuid/0c8f5e4d-c4b5-4598-a3ce-017b3d560ef4 -> ../../dm-5
lrwxrwxrwx 1 root root 10 May 12 16:34 /dev/disk/by-uuid/b17f8e4e-22f2-42e5-9f69-42a4de807ad7 -> ../../dm-4
lrwxrwxrwx 1 root root 10 May 12 16:34 /dev/disk/by-uuid/BC04-4362 -> ../../sdc2
lrwxrwxrwx 1 root root 10 May 12 16:34 /dev/disk/by-uuid/dd0e892f-fd9e-414b-b759-a83caf14ed64 -> ../../sdb1
root@pve-s740-03:/etc# vi fstab
root@pve-s740-03:~# vi /etc/fstab
…
/dev/disk/by-uuid/dd0e892f-fd9e-414b-b759-a83caf14ed64 /mnt/usb-drive ext4 defaults 0
root@pve-s740-03:~# mkdir /mnt/usb-drive
root@pve-s740-03:~# mount -a
root@pve-s740-03:~# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
udev 8023596 0 8023596 0% /dev
tmpfs 1614136 1484 1612652 1% /run
/dev/mapper/pve-root 25058324 4029460 19730640 17% /
tmpfs 8070672 46800 8023872 1% /dev/shm
efivarfs 128 104 20 84% /sys/firmware/efi/efivars
tmpfs 5120 0 5120 0% /run/lock
tmpfs 1024 0 1024 0% /run/credentials/systemd-journald.service
tmpfs 8070676 0 8070676 0% /tmp
/dev/sdc2 523248 8976 514272 2% /boot/efi
/dev/fuse 131072 16 131056 1% /etc/pve
tmpfs 1024 0 1024 0% /run/credentials/getty@tty1.service
tmpfs 1614132 4 1614128 1% /run/user/0
/dev/sdb1 479596204 99068688 356091856 22% /mnt/usb-drive
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Freitag, April 24th, 2026
Installing Ubuntu Desktop on systems with low memory (typically less than 4GB) can lead to hangs specifically during the ‚Copying files‘ or ‚Preparing‘ stages, because the Live USB environment lacks sufficient swap space
How to install ’ssh‘
root@pve-SNIFFER-01:~# apt-get install openssh-server
root@pve-SNIFFER-01:~# systemctl status ssh
root@pve-SNIFFER-01:~# systemctl enable ssh
root@pve-SNIFFER-01:~# systemctl start ssh
root@pve-SNIFFER-01:~# systemctl status ssh
root@pve-SNIFFER-01:~# vi /etc/ssh/sshd_config
PermitRootLogin yes
root@pve-SNIFFER-01:~# systemctl restart ssh
How to install ‚wireshark‘
root@pve-SNIFFER-01:~# add-apt-repository ppa:wireshark-dev/stable
root@pve-SNIFFER-01:~# apt-get update
root@pve-SNIFFER-01:~# apt-get install wireshark
root@pve-SNIFFER-01:~# dpkg-reconfigure wireshark-common
js@pve-SNIFFER-01:~$ sudo adduser $USER wireshark
js@pve-SNIFFER-01:~$ wireshark
Posted in Administration, Linux Solution, Proxmox | No Comments »