Add comprehensive Proxmox host analysis before optimization
New features: - analyze_proxmox_status() function shows detailed system state - RAM usage and allocation - VM/Container count and status - Total VM memory allocation and overcommit ratio - Storage status (pvesm) - Current kernel parameters vs recommended - CPU governor status - ZFS ARC size (if applicable) - Existing optimizations detection - Added optimize_cpu_governor() function - Sets CPU to 'performance' mode for VMs - Makes persistent via cpufrequtils - Added optimize_zfs_arc() function - Limits ZFS ARC to 25% of RAM - Frees more RAM for VMs - Updates initramfs for persistence Analysis now runs automatically when Proxmox is detected, showing comprehensive system status before mode selection.
This commit is contained in:
mindesbunister
@@ -42,6 +42,154 @@ check_root() {
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fi
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}
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analyze_proxmox_status() {
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echo -e "${CYAN}🔍 Proxmox Host Analysis${NC}"
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echo "========================"
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echo ""
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# System info
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local ram_gb=$(free -g | awk '/^Mem:|^Speicher:/{print $2}')
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local ram_used=$(free -g | awk '/^Mem:|^Speicher:/{print $3}')
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local ram_available=$(free -g | awk '/^Mem:|^Speicher:/{print $7}')
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local cpu_cores=$(nproc)
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local pve_version=$(pveversion | head -1 || echo "Unknown")
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echo "📊 System Information:"
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echo " 💾 RAM: ${ram_gb}GB (Used: ${ram_used}GB, Available: ${ram_available}GB)"
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echo " 🖥️ CPU: ${cpu_cores} cores"
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echo " 📦 Proxmox: $pve_version"
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echo ""
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# VM/Container workload
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local vm_count=$(qm list 2>/dev/null | tail -n +2 | wc -l || echo "0")
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local ct_count=$(pct list 2>/dev/null | tail -n +2 | wc -l || echo "0")
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local vm_running=$(qm list 2>/dev/null | grep -c "running" || echo "0")
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local ct_running=$(pct list 2>/dev/null | grep -c "running" || echo "0")
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echo "🖥️ Workload:"
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echo " 🖼️ VMs: $vm_count total ($vm_running running)"
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echo " 📦 Containers: $ct_count total ($ct_running running)"
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echo ""
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# Check VM memory allocation
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local total_vm_mem=0
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if command -v qm &>/dev/null; then
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while read -r vmid; do
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local mem=$(qm config "$vmid" 2>/dev/null | grep "^memory:" | awk '{print $2}' || echo "0")
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total_vm_mem=$((total_vm_mem + mem))
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done < <(qm list 2>/dev/null | tail -n +2 | awk '{print $1}')
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local total_vm_mem_gb=$((total_vm_mem / 1024))
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echo " 📊 Total VM memory allocated: ${total_vm_mem_gb}GB"
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local overcommit_ratio=$(echo "scale=1; $total_vm_mem_gb * 100 / $ram_gb" | bc 2>/dev/null || echo "N/A")
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echo " 📈 Memory overcommit: ${overcommit_ratio}%"
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echo ""
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fi
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# Storage
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echo "💾 Storage:"
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if command -v pvesm &>/dev/null; then
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pvesm status 2>/dev/null | tail -n +2 | while read -r name type status total used avail percent; do
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echo " • $name ($type): ${used}/${total} used"
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done
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fi
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echo ""
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# Check current kernel parameters
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echo "⚙️ Current Kernel Parameters:"
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local swappiness=$(sysctl -n vm.swappiness 2>/dev/null || echo "60")
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local dirty_ratio=$(sysctl -n vm.dirty_ratio 2>/dev/null || echo "20")
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local dirty_bg=$(sysctl -n vm.dirty_background_ratio 2>/dev/null || echo "10")
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local cache_pressure=$(sysctl -n vm.vfs_cache_pressure 2>/dev/null || echo "100")
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local qdisc=$(sysctl -n net.core.default_qdisc 2>/dev/null || echo "pfifo_fast")
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local tcp_congestion=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null || echo "cubic")
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echo " 📊 Memory:"
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echo " vm.swappiness: $swappiness (Proxmox recommended: 10)"
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echo " vm.dirty_ratio: $dirty_ratio (Proxmox recommended: 10)"
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echo " vm.dirty_background_ratio: $dirty_bg (Proxmox recommended: 5)"
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echo " vm.vfs_cache_pressure: $cache_pressure (Proxmox recommended: 50)"
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echo ""
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echo " 📡 Network:"
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echo " net.core.default_qdisc: $qdisc (Proxmox recommended: fq)"
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echo " net.ipv4.tcp_congestion_control: $tcp_congestion (Proxmox recommended: bbr)"
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echo ""
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# Check CPU governor
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local governor=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 2>/dev/null || echo "unknown")
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echo "🖥️ CPU Governor: $governor (Recommended: performance)"
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echo ""
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# Check ZFS if present
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if command -v zpool &>/dev/null && zpool list &>/dev/null 2>&1; then
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echo "🗄️ ZFS Configuration:"
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local arc_max=$(cat /sys/module/zfs/parameters/zfs_arc_max 2>/dev/null || echo "0")
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local arc_max_gb=$((arc_max / 1024 / 1024 / 1024))
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local recommended_arc=$((ram_gb / 4))
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echo " <20> Current ARC max: ${arc_max_gb}GB"
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echo " 💡 Recommended: ${recommended_arc}GB (25% of RAM, leaves more for VMs)"
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echo ""
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fi
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# Check for existing optimizations
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echo "🔍 Existing Optimizations:"
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local has_optimizations=false
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if [[ -f /etc/sysctl.d/99-system-optimization.conf ]] || [[ -f /etc/sysctl.d/99-proxmox-tuning.conf ]]; then
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echo " ✅ Custom sysctl configuration found"
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has_optimizations=true
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else
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echo " ❌ No custom sysctl configuration"
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fi
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if mount | grep -q "tmpfs.*tmpfs-cache"; then
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local tmpfs_count=$(mount | grep -c "tmpfs.*tmpfs-cache")
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echo " ⚠️ tmpfs mounts found: $tmpfs_count (may use RAM needed by VMs)"
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has_optimizations=true
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else
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echo " ✅ No tmpfs cache mounts (good for Proxmox)"
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fi
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if [[ -e /dev/zram0 ]] && swapon --show | grep -q zram0; then
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local zram_size=$(swapon --show | grep zram0 | awk '{print $3}')
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echo " ⚠️ zram active: $zram_size (reduces RAM for VMs)"
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has_optimizations=true
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else
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echo " ✅ No zram (good for Proxmox)"
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fi
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echo ""
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# Assessment
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echo "📋 Assessment:"
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local needs_optimization=false
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if [[ "$swappiness" != "10" ]] || [[ "$dirty_ratio" != "10" ]] || [[ "$qdisc" != "fq" ]] || [[ "$tcp_congestion" != "bbr" ]]; then
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echo " ⚠️ Kernel parameters not optimized for hypervisor workload"
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needs_optimization=true
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else
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echo " ✅ Kernel parameters look good"
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fi
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if [[ "$governor" != "performance" ]] && [[ "$governor" != "unknown" ]]; then
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echo " ⚠️ CPU governor not set to 'performance'"
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needs_optimization=true
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fi
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if command -v zpool &>/dev/null && zpool list &>/dev/null 2>&1; then
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if [[ $arc_max_gb -gt $recommended_arc ]]; then
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echo " ⚠️ ZFS ARC could be limited to give VMs more RAM"
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needs_optimization=true
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fi
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fi
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if [[ "$needs_optimization" == "false" ]]; then
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echo " ✅ System is already well-optimized for Proxmox!"
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fi
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echo ""
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echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
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echo ""
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}
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check_proxmox() {
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# Detect if running on Proxmox host
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if [[ -f /etc/pve/.version ]] || [[ -d /etc/pve ]] || pveversion &>/dev/null; then
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@@ -49,17 +197,14 @@ check_proxmox() {
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warn "⚠️ Proxmox VE host detected!"
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echo ""
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# Get VM/CT count
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local vm_count=$(qm list 2>/dev/null | tail -n +2 | wc -l || echo "0")
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local ct_count=$(pct list 2>/dev/null | tail -n +2 | wc -l || echo "0")
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# Show detailed analysis
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analyze_proxmox_status
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echo "🖥️ System: Proxmox VE (${vm_count} VMs, ${ct_count} containers)"
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echo ""
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echo "This tool has TWO modes:"
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echo ""
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echo " 1️⃣ Proxmox Host Mode (Hypervisor Optimization)"
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echo " • Optimized kernel params for VM workloads"
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echo " • Minimal RAM allocation (5-10% max)"
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echo " • Minimal RAM allocation (2GB APT cache only)"
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echo " • CPU performance governor"
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echo " • ZFS ARC limiting (if applicable)"
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echo " • No desktop app configuration"
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@@ -1320,6 +1465,90 @@ EOF
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success "Kernel parameters optimized ($profile profile)"
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}
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optimize_cpu_governor() {
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if [[ "${PROXMOX_MODE:-false}" != "true" ]]; then
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return 0
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fi
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log "Optimizing CPU governor for Proxmox..."
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# Check current governor
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local current_governor=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 2>/dev/null || echo "unknown")
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if [[ "$current_governor" == "performance" ]]; then
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success "CPU governor already set to 'performance'"
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return 0
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fi
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if [[ "$current_governor" == "unknown" ]]; then
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warn "CPU frequency scaling not available on this system"
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return 0
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fi
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# Install cpufrequtils if needed
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if ! command -v cpufreq-set &>/dev/null; then
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log "Installing cpufrequtils..."
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apt-get update -qq
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apt-get install -y cpufrequtils >/dev/null 2>&1
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fi
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# Set governor to performance
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for cpu in /sys/devices/system/cpu/cpu[0-9]*; do
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if [[ -f "$cpu/cpufreq/scaling_governor" ]]; then
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echo "performance" > "$cpu/cpufreq/scaling_governor" 2>/dev/null || true
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fi
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done
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# Make persistent
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cat > /etc/default/cpufrequtils << 'EOF'
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# CPU governor for Proxmox host
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GOVERNOR="performance"
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EOF
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success "CPU governor set to 'performance' (full speed for VMs)"
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}
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optimize_zfs_arc() {
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if [[ "${PROXMOX_MODE:-false}" != "true" ]]; then
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return 0
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fi
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# Check if ZFS is present
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if ! command -v zpool &>/dev/null || ! zpool list &>/dev/null 2>&1; then
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return 0
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fi
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log "Optimizing ZFS ARC limit..."
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local ram_gb=$(free -g | awk '/^Mem:|^Speicher:/{print $2}')
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local current_arc=$(cat /sys/module/zfs/parameters/zfs_arc_max 2>/dev/null || echo "0")
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local current_arc_gb=$((current_arc / 1024 / 1024 / 1024))
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local recommended_arc=$((ram_gb / 4)) # 25% of RAM
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if [[ $current_arc_gb -le $recommended_arc ]] && [[ $current_arc_gb -gt 0 ]]; then
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success "ZFS ARC already limited to ${current_arc_gb}GB (good for VMs)"
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return 0
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fi
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local arc_bytes=$((recommended_arc * 1024 * 1024 * 1024))
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# Set immediately
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echo "$arc_bytes" > /sys/module/zfs/parameters/zfs_arc_max 2>/dev/null || true
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# Make persistent
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mkdir -p /etc/modprobe.d
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if ! grep -q "zfs_arc_max" /etc/modprobe.d/zfs.conf 2>/dev/null; then
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echo "options zfs zfs_arc_max=$arc_bytes" >> /etc/modprobe.d/zfs.conf
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else
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sed -i "s/zfs_arc_max=[0-9]*/zfs_arc_max=$arc_bytes/" /etc/modprobe.d/zfs.conf
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fi
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# Update initramfs
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update-initramfs -u -k all >/dev/null 2>&1 || true
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success "ZFS ARC limited to ${recommended_arc}GB (frees RAM for VMs)"
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}
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create_service() {
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if [[ $SETUP_SERVICE != true ]]; then
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return 0
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@@ -1494,6 +1723,11 @@ main() {
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setup_zram
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setup_tmpfs
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tune_kernel
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# Proxmox-specific optimizations
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optimize_cpu_governor
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optimize_zfs_arc
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create_service
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# Show results
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