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--- computing:grokhacking [2025/03/28 23:48] – oemb1905
+++ computing:grokhacking [2025/03/28 23:55] (current) – oemb1905
@@ Line 1: / Line 1: @@
-```
+#forthcoming
-#!/bin/bash
-# New production VM backup and pruning script
-# Runs monthly to maintain VM image sizes
-# Configuration
-BACKUP_DIR="/mnt/warehouse/backups"
-VM_DIR="/mnt/vms/production"
-TEMP_DIR="/mnt/vms/temps"
-LOG_DIR="/root"
-ALERT_EMAIL="alerts@haacksnetworking.org"
-HOSTNAME=$(hostname -f)
-RETENTION_DAYS=15
-MIN_SPACE_REQUIRED=10737418240  # 10GB in bytes
-MAX_PARALLEL=2  # Maximum parallel VM processes
-# VM images array
-declare -a VM_IMAGES=(
-    "hackingclub.org.qcow2"
-    "felinefantasy.club.qcow2"
-)
-# Check if dry-run mode is enabled
-DRY_RUN=false
-if [[ "$1" == "--dry-run" ]]; then
-    DRY_RUN=true
-    echo "Running in dry-run mode - no changes will be made"
-fi
-# Function to log and email messages
-log_and_mail() {
-    local subject="$1"
-    local message="$2"
-    local log_file="$3"
-    echo "$message" | tee -a "$log_file"
-    if ! $DRY_RUN; then
-        echo "$message" | mail -s "$subject" "$ALERT_EMAIL"
-    fi
-}
-# Cleanup function for interruptions
-cleanup() {
-    echo "Script interrupted - cleaning up temporary files..."
-    rm -f "${TEMP_DIR}"/*.bak "${TEMP_DIR}/trimmed2."*
-    exit 1
-}
-# Trap interrupts
-trap cleanup INT TERM
-# Check available disk space
-check_space() {
-    local dir="$1"
-    local available=$(df --output=avail "$dir" | tail -n1)
-    if (( available * 1024 < MIN_SPACE_REQUIRED )); then
-        return 1
-    fi
-    return 0
-}
-# Process VM function
-process_vm() {
-    local vm="$1"
-    local TIMESTAMP=$(date +"%Y%m%d-%H:%M:%S")
-    local LOG_FILE="${LOG_DIR}/${vm}-loop-b.log"
-    touch "$LOG_FILE"
-    # Log disk space before
-    local space_before=$(du -sb "${VM_DIR}/${vm}" | cut -f1)
-    # Check disk space
-    if ! check_space "$VM_DIR"; then
-        log_and_mail "[vm-sane-bu-${vm}-failed]-${HOSTNAME}-$(date)" \
-            "Insufficient disk space for ${vm} at $(date)." \
-            "$LOG_FILE"
-        return 1
-    fi
-    if ! $DRY_RUN; then
-        # Shutdown VM
-        if ! virsh shutdown "$vm" 2>/dev/null; then
-            log_and_mail "[vm-sane-bu-${vm}-failed]-${HOSTNAME}-$(date)" \
-                "Failed to initiate shutdown of ${vm} at $(date)." \
-                "$LOG_FILE"
-            return 1
-        fi
-        # Wait for shutdown
-        sleep 30
-        if ! tail -n 2 "/var/log/libvirt/qemu/${vm}.log" | grep -q "reason=shutdown"; then
-            log_and_mail "[vm-sane-bu-${vm}-failed]-${HOSTNAME}-$(date)" \
-                "The ${vm} image failed to shutdown properly at $(date)." \
-                "$LOG_FILE"
-            return 1
-        fi
-    fi
-    # Image conversion process
-    cd "$VM_DIR" || return 1
-    local START0=$(date +%s)
-    if ! $DRY_RUN; then
-        if ! virt-sparsify --in-place "$vm" || \
-           ! qemu-img convert -O qcow2 "$vm" "trimmed.$vm" || \
-           ! mv "$vm" "${TEMP_DIR}/${vm}.bak" || \
-           ! mv "trimmed.$vm" "$vm" || \
-           ! virsh start "$vm"; then
-            log_and_mail "[vm-sane-bu-${vm}-failed]-${HOSTNAME}-$(date)" \
-                "Image conversion failed for ${vm} at $(date)." \
-                "$LOG_FILE"
-            return 1
-        fi
-    fi
-    local END0=$(date +%s)
-    local DURATION0=$((END0 - START0))
-    local MINUTES0=$((DURATION0 / 60))
-    # Tarballing process
-    cd "$TEMP_DIR" || return 1
-    local START1=$(date +%s)
-    if ! $DRY_RUN; then
-        if ! qemu-img convert -O qcow2 "${vm}.bak" "trimmed2.$vm" || \
-           ! cp -ar --sparse=always "trimmed2.$vm" "${BACKUP_DIR}/replicas/${vm}:${TIMESTAMP}.bak" || \
-           ! bsdtar --use-compress-program=pbzip2 -Scf "${vm}.bak.tar.bz2" "trimmed2.$vm" || \
-           ! mv "${vm}.bak.tar.bz2" "${BACKUP_DIR}/tarballs/${vm}:${TIMESTAMP}.sane.bak.tar.bz2"; then
-            log_and_mail "[vm-sane-bu-${vm}-failed]-${HOSTNAME}-$(date)" \
-                "Tarball creation failed for ${vm} at $(date)." \
-                "$LOG_FILE"
-            return 1
-        fi
-        # Cleanup temporary files
-        rm -f "${vm}.bak" "trimmed2.$vm"
-    fi
-    local END1=$(date +%s)
-    local DURATION1=$((END1 - START1))
-    local MINUTES1=$((DURATION1 / 60))
-    # Log disk space after
-    local space_after=$(du -sb "${VM_DIR}/${vm}" | cut -f1)
-    local space_saved=$((space_before - space_after))
-    # Prune old backups
-    if ! $DRY_RUN; then
-        find "${BACKUP_DIR}/tarballs/" -type f -mtime "+${RETENTION_DAYS}" -delete
-        find "${BACKUP_DIR}/replicas/" -type f -mtime "+${RETENTION_DAYS}" -delete
-    fi
-    # Success notification
-    local MESSAGE="$(date) Jonathan, the ${vm} image conversion took ${DURATION0} sec. (${MINUTES0} min) "\
-"and the tarballing took ${DURATION1} sec. (${MINUTES1} min). "\
-"Space saved: $((space_saved / 1048576)) MB (Before: $((space_before / 1048576)) MB, After: $((space_after / 1048576)) MB)"
-    log_and_mail "[vm-sane-bu-${vm}-success]-${HOSTNAME}-$(date)" \
-        "$MESSAGE" \
-        "$LOG_FILE"
-    rm -f "$LOG_FILE"
-    return 0
-}
-# Main loop with parallel processing
-pids=()
-for vm in "${VM_IMAGES[@]}"; do
-    # Wait if maximum parallel processes reached
-    while (( ${#pids[@]} >= MAX_PARALLEL )); do
-        wait -n  # Wait for any process to finish
-        # Clean up completed PIDs
-        new_pids=()
-        for pid in "${pids[@]}"; do
-            if kill -0 "$pid" 2>/dev/null; then
-                new_pids+=("$pid")
-            fi
-        done
-        pids=("${new_pids[@]}")
-    done
-    # Process VM in background
-    process_vm "$vm" &
-    pids+=($!)
-done
-# Wait for all processes to complete
-wait
-echo "All VM processing completed at $(date)"
-```

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