Links

Documentation

Directory structure

/etc/pve

/var/lib/vz

/var/lib/vz/template/iso

Proxmox cluster

Cluster manager

pvecm status
pvecm nodes

HA status

ha-manager status

Monitoring proxmox with zabbix

https://github.com/takala-jp/zabbix-proxmox

FAQ

Proxmox API call failed: Couldn't authenticate user: zabbix@pve

Funky characters in password string?

FAQ

Cores, sockets and vCPUs

vCPUs is what the vm uses

Stop all proxmox services

systemctl stop pve-cluster systemctl stop pvedaemon systemctl stop pveproxy systemctl stop pvestatd

switch to community repository

cat /etc/apt/sources.list.d/pve-enterprise.list 
#deb https://enterprise.proxmox.com/debian/pve buster pve-enterprise

echo "deb http://download.proxmox.com/debian/pve buster pve-no-subscription" > /etc/apt/sources.list.d/pve-no-subscription.list

apt update

W: (pve-apt-hook) You are attempting to remove the meta-package 'proxmox-ve'!

cehck sources.list :)

unexpected property 'prune-backups' (500)

When for example Add: iSCSI Uncheck "Keep all backups" in "Backup retention"

Error: VM quit/powerdown failed - got timeout

qm stop VMID

if that complains about lock, remove the lock and try again

a used vhost backend has no free memory slots left

You have not turned on protection against thin pools running out of space.

serial console from command line

qm terminal <id}

enable serial console in guest

https://pve.proxmox.com/wiki/Serial_Terminal

looks like this is not needed:

systemctl enable serial-getty@ttyS0.service

in /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0 console=tty0"

ttyS0 is for qm terminal, tty0 is for the "console" buttion in UI

debian based

update-grub

redhat based

grub2-mkconfig --output=/boot/grub2/grub.cfg

add

serial0: socket

to /etc/pve/qemu-server/[vmid].conf and restart

agetty: /dev/ttyS0: not a device

systemctl status useless again, means the serial bit is missing from <vmid>.conf

TASK ERROR: command 'apt-get update' failed: exit code 100

subtle way of telling you to get subscription of at least change the sources list

Import vmdk to lvm

https://pve.proxmox.com/wiki/Qemu/KVM_Virtual_Machines#_importing_virtual_machines_and_disk_images

Can't apply changes to memory allocation

Maybe try enabling NUMA in CPU settings

Adding hardware shows orange

something is not supported (Options->Hotplug)

"Connection error 401: no ticket"

Login session expired?

can't lock file '/var/lock/qemu-server/lock-102.conf' - got timeout (500)

Maybe someone else has/had webui open

== TASK ERROR: Can't use string ("keep-all=0,keep-last=3") as a HASH ref while "strict refs" in use at /usr/share/perl5/PVE/VZDump.pm line 502. ==

Classic, means incorrect syntax in your /etc/pve/storage.cfg

The current guest configuration does not support taking new snapshots

You're using raw instead of qcow2. Convert: Hardware->Hard disk "Move Disk"

WARNING: Device /dev/dm-21 not initialized in udev database even after waiting 10000000 microseconds.

Until someone fixes it:

udevadm trigger

"connection error - server offline?"

Try reconnection browser

Find vm name by id

grep name /etc/pve/nodes/*/qemu-server/101.conf |head -n 1

VM 101 Backup failed: VM is locked (snapshot)

Check if there's no snapshot running (how?)

qm unlock 101

VM 101 Backup failed:: VM is locked (snapshot-delete)

something to check before qm unlock?

Started Proxmox VE replication runner.

??

Find ID by name

grep -l "name: <NAME>"  /etc/pve/nodes/*/qemu-server/*conf| sed 's/^.*\/\([0-9]*\)\.conf/\1/g'

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