NoBIGTech Wiki Técnico - docu:csheet:sysadm:venv:qemu

proxmox_add_uso

Anonymous (anonymous@undisclosed.example.com) — 2020-12-03T10:18:13+00:00

Add an ISO to your proxmox installation on the server via SSH For example: if we have an ubuntu-20.04.1-desktop-amd64.iso image, we will scp the iso to the server and then: cp ubuntu-20.04.1-desktop-amd64.iso /var/lib/vz/template/iso/ And now you can use this ISO to create virtual machines!

proxmox_local_pool

Anonymous (anonymous@undisclosed.example.com) — 2020-12-03T19:54:24+00:00

Crear a local directory storage pool on Proxmox (ex: sshfs or other) For example: if we have an sshfs storage mounted at /mnt/data, we can use that as a local storage this way: pvesm add dir backup-sshfs --path /mnt/data

proxmox_nested_vm

Anonymous (anonymous@undisclosed.example.com) — 2021-02-27T14:16:52+00:00

Nest virtual machines on Proxmox

resize_qcow2_img

Anonymous (anonymous@undisclosed.example.com) — 2020-09-25T10:58:47+00:00

Resize (expand) partitions on a qcow2 image using qemu-img and virt-resize In case you have no space left on the virtual machine, and you had specified a low maximum allocation for the qcow2 image... you can dump the partitions to a new qcow2 image with

shrink_qcow2_img

Anonymous (anonymous@undisclosed.example.com) — 2020-08-21T10:03:27+00:00

Shrink a qcow2 image file using qemu-img tool In case you did allocate more than you needed, and want to get some disk space back, you can use this command on a qcow2 image, to shrink it. # using a low priority is recommended, otherwise your host machine becomes unusable nice -n 19 qemu-img convert -O qcow2 ubuntu.qcow2 ubuntu.new.qcow2 # search the process on another terminal, # and also apply a low io priority using ionice ionice -n 7 -p `pgrep qemu-img | head -n1`