kenrmayfield

Fix the AppStream Issue

[root@centos8 ~]# yum update
CentOS-8 - AppStream 71 B/s | 38 B 00:00
Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

As CentOS Linux 8 had reached the End Of Life (EOL) on December 31st, 2021. It means that CentOS 8 will no longer receive development resources from the official CentOS project. To keep your CentOS updated, you may update the mirrors or upgrade to CentOS Stream.

Proxmox Assign Bind Mount To Unprivileged Container

In order for the LXC container to have full access the proxmox host directory, a subgid is set as owner of a host directory, and an ACL is used to ensure permissions.

Bind Mount dataset to LXC

Add the following line to /etc/pve/lxc/<CT_ID>.conf

mp0:/mount/point/on/host,mp=/mount/point/on/lxc

Create group on host

In the default Proxmox configuration, unpriviliged container subgids will have the prefix "10" followed by the expected 4-digit gid.

Proxmox PVE Host Config Backup Script

This script can be used to backup essential configuration files from the Proxmox Virtual Enivronment (PVE) host.

The script will create backups using tar with specified backup prefix and date and time stamp in the file name. Script will also delete backups that are older then number of days specified.

Create backup script file

To create backup script that will be executed every day we can create backup script in /etc/cron.daily/ folder. We need to make it writeable by root (creator) only, but readable and executable by everyone:

touch /etc/cron.daily/pvehost-backup

	#! /bin/sh
	# @author: Jarle Friestad
	# Based on script by Claus Witt (http://clauswitt.com/319.html)

	# Adding or Removing Items to hosts file
	# Use -h flag for help

	DEFAULT_IP=127.0.0.1
	IP=${3:-$DEFAULT_IP}

	# source: https://forum.proxmox.com/threads/removing-deleting-a-created-cluster.18887/
	#/bin/sh
	# stop service
	systemctl stop pvestatd.service
	systemctl stop pvedaemon.service
	systemctl stop pve-cluster.service
	systemctl stop corosync
	systemctl stop pve-cluster

	killall pmxcfs

	#!/bin/bash

	# This script is designed to assist in mounting CIFS/SMB shares to a Proxmox LXC container.
	# It automates the process of creating a mount point on the Proxmox VE (PVE) host, adding the
	# CIFS share to the /etc/fstab for persistent mounts, and configuring the LXC container to
	# recognize the share. This script is intended for use on a Proxmox Virtual Environment and
	# requires an LXC container to be specified that will access the mounted share.
	#
	# Prerequisites:
	# - Proxmox Virtual Environment setup.