Archive for the ‘Proxmox’ Category
Proxmox Virtual Environment (VE) 9.2.3 – how to set up Email Notifications e.g. Gmail
Mittwoch, Juli 1st, 2026Proxmox Virtual Environment (VE) 9.2.3 – run the combined command apt-get update && apt-get dist-upgrade because Proxmox strongly recommends using dist-upgrade (or full-upgrade) instead of the standard upgrade to ensure dependency changes are handled correctly
Dienstag, Juni 30th, 2026# apt-get update && apt-get dist-upgrade
Proxmox Virtual Environment (VE) 9.2.3 – Emergency Step ‚only if disk is 100% full‘
Montag, Juni 29th, 2026When your Proxmox Virtual Environment (VE) boot disk fills up due to old kernels the package manager ‚apt‘ will throw errors like „No space left on device“ and refuse to complete updates or regular autoremovals
# uname -r
# rm -f /boot/vmlinuz-<ALTE_VERSION>-pve
# rm -f /boot/initrd.img-<ALTE_VERSION>-pve
Proxmox Virtual Environment (VE) 9.2.3 – traditional plaintext syslog logs have been replaced by the systemd journal ‚journalctl‘
Sonntag, Juni 28th, 2026If you need a traditional ‚/var/log/syslog‘ file for third-party tools or legacy scripts you must manually install rsyslog by running apt install rsyslog on the Proxmox host
# journalctl -f
Proxmox & Ceph – ditch the old SAN
Samstag, Juni 27th, 2026Proxmox Virtual Environment (VE) 9.2.3 – if ‚local‘ (Proxmox OS / Root) is full
Dienstag, Juni 9th, 2026Remove 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:~#
Proxmox Datacenter Manager 1.1 – has landed and it may be the most important PDM release yet
Freitag, Juni 5th, 2026Pulse – ist ein leichtgewichtiges echtzeitfähiges Dashboard zur Überwachung von Proxmox Systemen
Mittwoch, Juni 3rd, 2026Proxmox Virtual Environment (VE) 9.2.3 – seven new features
Freitag, Mai 29th, 2026Proxmox Datacenter Manager (PDM) 1.1 – introduces automation capabilities alongside multi cluster subscription lifecycle management
Donnerstag, Mai 28th, 2026Proxmox Virtual Environment (VE) 9.2.2 – ein Software Definiertes Netzwerk (SDN) beschreibt eine Architektur mit dem Ziel die Netzwerksteuerung zu vereinfachen und zu verbessern
Samstag, Mai 23rd, 2026Proxmox Virtual Environment (VE) 9.2.2 – these are 5 Proxmox fixes and optimizations that are absolutely worth doing this weekend
Freitag, Mai 22nd, 2026Proxmox Virtual Environment (VE) 9.2 – this release debuts a Dynamic Load Balancer for real time cluster resource scheduling and automated high availability (HA) migrations
Donnerstag, Mai 21st, 2026Proxmox Virtual Environment (VE) 9.1.9 – Mounting a USB Drive to Restore a Proxmox VM from an Older Backup on a New System
Dienstag, Mai 12th, 2026root@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
