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proxmox-various-commands [2020/11/28 14:45] – chotaireproxmox-various-commands [2024/10/29 17:16] (current) – [Enable Nested Virtualization] chotaire
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 Careful, don't live-migrate VMs with nested virtualization enabled, I think that wouldn't work. Nested Virtualization is rather something for your standalone hypervisors. Careful, don't live-migrate VMs with nested virtualization enabled, I think that wouldn't work. Nested Virtualization is rather something for your standalone hypervisors.
 +
 +==== Intel Host CPU ====
  
 <code> <code>
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 </code> </code>
  
 +==== AMD Host CPU ====
 +
 +<code>
 +echo "options kvm-amd nested=1" > /etc/modprobe.d/kvm-amd.conf
 +modprobe -r kvm_amd
 +modprobe kvm_amd
 +cat /sys/module/kvm_amd/parameters/nested
 +</code>
 ===== Install and enable KSM (Kernel Samepage Mapping) ===== ===== Install and enable KSM (Kernel Samepage Mapping) =====
  
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 update-grub update-grub
 reboot reboot
 +</code>
 +
 +===== Proxmox installed from Hetzner image causes postfix to bounce mail =====
 +
 +This problem doesn't exist when installing from the Proxmox ISO. Run the following command and set the general configuration to **Internet Site**.
 +
 +<code>
 +dpkg-reconfigure postfix
 </code> </code>
  
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 </code> </code>
  
-===== Convert Virtualbox vdi to vmdk =====+===== Can't SSH into Fedora 33 using pubkey authentication =====
  
 <code> <code>
-vboxmanage clonehd palau.vdi palau.vmdk --format VMDK+update-crypto-policies --set LEGACY 
 +</code> 
 + 
 +===== Convert Virtualbox vdi using vboxmanage ===== 
 + 
 +This is how to convert a vdi image to vmdk using vboxmanage provided by VirtualBox: 
 + 
 +<code> 
 +vboxmanage clonehd whatever.vdi whatever.vmdk --format VMDK 
 +</code> 
 + 
 +===== Convert Virtualbox vdi using qemu-img ===== 
 + 
 +This example shows how to convert vdi to qcow using qemu-img provided by Proxmox: 
 + 
 +<code> 
 +qemu-img convert -f vdi -O qcow2 whatever.vdi whatever.qcow2  
 +</code> 
 + 
 +===== Convert vmdk and import to thinpool ===== 
 + 
 +<code> 
 +qemu-img convert -f vmdk whatever.vmdk -O qcow2 whatever.qcow2 
 +qm importdisk 100 whatever.qcow2 local-zfs
 </code> </code>
  
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 <code> <code>
 fstrim -a -v fstrim -a -v
-</code> 
-===== Convert vmdk and import to thinpool: ===== 
- 
-<code> 
-qemu-img convert -f vmdk whatever.vmdk -O qcow2 whatever.qcow2 
-qm importdisk 100 whatever.qcow2 local-zfs 
 </code> </code>
  
 ===== Replacing a failed drive on a Proxmox 6.3 system booting from ZFS ===== ===== Replacing a failed drive on a Proxmox 6.3 system booting from ZFS =====
  
-Since sgdisk totally hosed one of my SSD partition layouts, here comes the rescue. On EFI systems booting from two ZFS drives (RAID1), take backup from partition layouts of both drives while they are working:+Since the [[https://pve.proxmox.com/wiki/ZFS_on_Linux#_zfs_administration|Proxmox documentation]] is useless and sgdisk totally hosed one of my SSD partition layouts, I came up with this solution. On EFI systems booting from two ZFS drives (RAID1), take backup from partition layouts of both drives while they are working:
  
 <code> <code>
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 echo "sleep 1" >> /etc/default/qemu-guest-agent echo "sleep 1" >> /etc/default/qemu-guest-agent
 reboot reboot
 +</code>
 +
 +===== Can't login on Web UI when cluster is degraded =====
 +
 +Run pvecm expected with the number of still online nodes, e.g. 1. Set back to previous number when done.
 +
 +<code>
 +pvecm expected 1
 </code> </code>
  
proxmox-various-commands.1606571141.txt.gz · Last modified: by chotaire

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