Mikesco3

Proxmox VE tips

Just some tips I gathered over time. All in one easily reachable place so I can share it wherever I want.

Please note that unless you see a shebang (#!/...) these code blocks are usually meant to be copy & pasted directly into the shell. Some of the steps will not work if you run part of them in a script and copy paste other ones as they rely on variables set before.
The { and } surrounding some scripts are meant to avoid poisoning your bash history with individual commands, etc. You can ignore them if you manually copy paste the individual commands.
I chose to write things "in the open" that way so there's still some control and things don't become a black box.

Table of contents

Impact123

Proxmox VE tips

Just some tips I gathered over time. All in one easily reachable place so I can share it wherever I want.

Please note that unless you see a shebang (#!/...) these code blocks are usually meant to be copy & pasted directly into the shell. Some of the steps will not work if you run part of them in a script and copy paste other ones as they rely on variables set before.
The { and } surrounding some scripts are meant to avoid poisoning your bash history with individual commands, etc. You can ignore them if you manually copy paste the individual commands.
I chose to write things "in the open" that way so there's still some control and things don't become a black box.

Table of contents

sporkus

Exposing zfs snapshot to windows previous version using samba vfs_shadow_copy2

This was much trickier than I had originally anticipated and have spent a few hours testing.

The config from samba wiki absolutely works, but it wasn't ranked higher in search engine and it's not general enough. https://github.com/zfsonlinux/zfs-auto-snapshot/wiki/Samba

Tested on ubuntu 22.04LTS, samba 4.15.9 and windows 11.

TLDR

Mikesco3

Usage

1. On system that should be backed up

create a user called zfsbackup

useradd zfsbackup --create-home --system
mkdir -p /home/zfsbackup/{.ssh,.local/bin}
chown zfsbackup:zfsbackup /home/zfsbackup --recursive

add a restricted list of commands allowed by this user

csarn

Usage

on system that should be backed up

• put "restrict_commands.sh" in /usr/local/bin and make it executable
• install ts, lzop and optionally mbuffer

useradd zfsbackup --create-home --system
mkdir /home/zfsbackup/.ssh
zfs allow -u zfsbackup send,hold tank/dataset
echo 'restrict,command="restrict_commands.sh" ssh-ed25519 ...' > /home/zfsbackup/.ssh/authorized_keys