filou59 / proxmox

Proxmox

Tonton Jo - 2021

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Informations:

This repository contains somes scripts and tips for Proxmox hypervisor and backup server

Find here more of my videos about proxmox

Proxmox Toolbox

This tools will help you get your Proxmox VE and BS installations configured and secured in no time:

• set sources, update bin, remove subsciption message, fail2ban, snmp, mail notifications and much more Proxmox Toolbox

Usefull commands:

You'll find there some usefull commands used for proxmox and more generally debian

1 - Proxmox

1.1 - Stop all services:

for i in pve-cluster pvedaemon vz qemu-server pveproxy pve-cluster; do systemctl stop $i ; done

1.2 - Regenerate console login screen (usefull after ip changes)

pvebanner

2 - VM Management

2.1 - Disk passtrough

qm set $vmid -scsi0 /dev/sdX

2.2 - Appliance Import

qm importdisk $vmid pathtoappliance.ova local-lvm

2.3 - Appliance Export

• Identifiy the disk of a vm

qm config $vmid

• Check absolute path ($absolutepath) for drive as seen by the OS

pvesm path local-lvm:vm-100-disk-0

• Export the drive wanted, watch for the format to be correct :-)

qemu-img convert -O qcow2 -f raw $absolutepath OUTPUT.qcow2

3 - Drives Management

3.1 - Find a disc with ID:

ls /dev/disk/by-id/ -la

ls /dev/disk/by-id/ -la | grep "serial"

3.2 - list disk informations: Replace X

lsblk -o name,model,serial,uuid /dev/sdX

3.3 - find disk UUID or partition UUID

ls -l /dev/disk/by-uuid

ls -l /dev/disk/by-partuuid

3.4 - Wipe Disk

wipefs -af /dev/sdX

3.5 - Read actual partition status after change

hdparm -z /dev/sdX

echo 1 > /sys/block/sdX/device/rescan

3.6 - Find the actual blocksize of all disks - Usually 4k

lsblk -o NAME,PHY-SeC

3.6 - Find the actual blocksize of all disks - Usually 4k

lsblk -o NAME,PHY-SeC

3.6^7 - Test speed of drive (hdparm needed)

hdparm -t /dev/$sdX

4 - Zpool Management

4.1 - Remove import of removed pools at startup:

4.1.1 - Identify your pools:

systemctl | grep zfs

4.1.2 - Remove import of a pool at boot (remove old pools from load)

systemctl disable [e-mail]

4.2 - Find ARC RAM usage for Zpool:

awk '/^size/ { print $1 " " $3 / 1048576 }' < /proc/spl/kstat/zfs/arcstats

4.3 - Find Compression ratio and used space:

zfs list -o name,avail,used,refer,lused,lrefer,mountpoint,compress,compressratio

4.4 - Replace Zpool Drive:

zpool replace pool /old/drive /new/drive

4.5 - Mark a pool as OK - Clear errors on pool and drives

zpool clear "poolname"

4.6 - Get Zpool version:

zpool --version

4.7 - Ugrade a zpool:

zpool upgrade "$poolname"

4.8 - Zpool options settings

4.8.1 - Get your $poolname

zfs list

4.8.2 - find actual options - filter if necessary

zfs get all 

zfs get all | grep atime

4.8.3 - Set new option value

zfs set atime=off $poolname

zfs set compression=off $poolname

4.9 - If pool is created with /dev/sdX instead of ID (wich may lead to mount fail)

zpool export $poolname

zpool import -d /dev/disk/by-id -aN

5 - Monitoring

5.1 - Live disk IO

watch -n 1 "zpool iostat -v"

Ioping - usefull to simulate drive activity and therefore locating it.

s-tui - Graphical interface to monitor system performances

stress - install it with s-tui to be able to stress your system - dont use in prod