Proxmox Setup and Maintenance Guide

#!/bin/bash

# Define a function for green text output
green_echo() {
  echo -e "\e[32m$1\e[0m"
}

# Backup the current APT sources list
green_echo "Backing up current sources.list..."
cp /etc/apt/sources.list /etc/apt/sources.list.bak

# Replace sources with USTC mirror
green_echo "Updating sources.list to use USTC mirror..."
sed -i 's|http://ftp.debian.org/debian|http://mirrors.ustc.edu.cn/debian|g' /etc/apt/sources.list
sed -i 's|http://security.debian.org|http://mirrors.ustc.edu.cn/debian-security|g' /etc/apt/sources.list
# Add non-free repositories
sed -i '/^deb/ s/$/ non-free non-free-firmware/' /etc/apt/sources.list

# Update Proxmox no-subscription repository
PVE_LIST="/etc/apt/sources.list.d/pve-no-subscription.list"
if [ -f "$PVE_LIST" ]; then
    green_echo "Updating Proxmox no-subscription repository to use USTC mirror..."
    sed -i 's|http://download.proxmox.com/debian/pve|http://mirrors.ustc.edu.cn/proxmox/debian/pve|g' "$PVE_LIST"
else
    green_echo "Adding Proxmox no-subscription repository from USTC mirror..."
    echo "deb http://mirrors.ustc.edu.cn/proxmox/debian/pve bookworm pve-no-subscription" > "$PVE_LIST"
fi

# Remove enterprise repository list
ENTERPRISE_LIST="/etc/apt/sources.list.d/pve-enterprise.list"
if [ -f "$ENTERPRISE_LIST" ]; then
    green_echo "Removing existing Proxmox enterprise repository..."
    rm -f "$ENTERPRISE_LIST"
fi

# Update Ceph repository
if [ -f /etc/apt/sources.list.d/ceph.list ]; then
  CEPH_CODENAME=$(ceph -v | grep ceph | awk '{print $(NF-1)}')
  source /etc/os-release
  echo "deb https://mirrors.ustc.edu.cn/proxmox/debian/ceph-$CEPH_CODENAME $VERSION_CODENAME no-subscription" > /etc/apt/sources.list.d/ceph.list
fi

# Update CT Template source
green_echo "Updating CT Template source to use USTC mirror..."
sed -i.bak 's|http://download.proxmox.com|https://mirrors.ustc.edu.cn/proxmox|g' /usr/share/perl5/PVE/APLInfo.pm

# Disable non-free firmware warnings
green_echo "Disabling non-free firmware warnings..."
echo 'APT::Get::Update::SourceListWarnings::NonFreeFirmware "false";' >/etc/apt/apt.conf.d/no-bookworm-firmware.conf

# Remove subscription nag from UI
green_echo "Removing subscription nag from UI..."
echo "DPkg::Post-Invoke { \"dpkg -V proxmox-widget-toolkit | grep -q '/proxmoxlib\.js$'; if [ \$? -eq 1 ]; then { echo 'Removing subscription nag from UI...'; sed -i '/.*data\.status.*{/{s/\!//;s/active/NoMoreNagging/}' /usr/share/javascript/proxmox-widget-toolkit/proxmoxlib.js; }; fi\"; };" >/etc/apt/apt.conf.d/no-nag-script
apt --reinstall install proxmox-widget-toolkit &>/dev/null

# Disable PVE HA and corosync services if active
if systemctl is-active --quiet pve-ha-crm && systemctl is-active --quiet pve-ha-lrm; then
  green_echo "PVE HA is active. Disabling related services..."
  systemctl disable -q --now pve-ha-crm
  systemctl disable -q --now pve-ha-lrm
fi

if systemctl is-active --quiet corosync; then
  green_echo "Corosync is active. Disabling it..."
  systemctl disable -q --now corosync
fi

# Update APT package index
green_echo "Updating APT package index..."
apt update

# Detect CPU vendor and install appropriate microcode package
cpu_vendor=$(lscpu | grep -i 'vendor id' | awk '{print $3}')
if [ "$cpu_vendor" == "GenuineIntel" ]; then
    green_echo "Detected Intel CPU. Installing intel-microcode..."
    apt install -y intel-microcode
elif [ "$cpu_vendor" == "AuthenticAMD" ]; then
    green_echo "Detected AMD CPU. Installing amd64-microcode..."
    apt install -y amd64-microcode
else
    echo "Unknown CPU vendor. No microcode updates applied."
fi

green_echo "All Completed. You may want to do apt upgrade"

#!/bin/bash

# Desired CPU governor (e.g., "performance", "powersave", "userspace", "ondemand", "conservative", "schedutil")
DESIRED_GOVERNOR="powersave"

# Print all available CPU governors
available_governors=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors)
echo "Available CPU governors: $available_governors"

# Detect current governor
current_governor=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)
echo "Current CPU governor: $current_governor"

# Set new governor
echo "$DESIRED_GOVERNOR" | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor >/dev/null

# Confirm governor change
current_governor=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)
echo "CPU governor set to: $current_governor"

# Set in crontab to maintain settings after reboot
CRONTAB_COMMAND="(sleep 60 && echo \"$DESIRED_GOVERNOR\" | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor)"
CRONTAB_ENTRY="@reboot $CRONTAB_COMMAND"
(crontab -l 2>/dev/null | grep -Fv "scaling_governor"; echo "$CRONTAB_ENTRY") | crontab -

echo "Crontab setup completed (use 'crontab -e' to check)"

#!/bin/bash

# Fetch all LXC container IDs
lxc_ids=$(pct list | awk 'NR>1 {print $1}')

# Iterate through each LXC container
for id in $lxc_ids; do
    # Get LXC container's IPv4 address
    ip=$(pct exec $id -- ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')

    # Extract the last part of the IPv4 address as a tag
    if [[ ! -z "$ip" ]]; then
        tag=${ip##*.}

        # Set the tag
        pct set $id --tags $tag
        echo "LXC container $id tagged with $tag"
    else
        echo "No IPv4 address found for LXC container $id"
    fi
done