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https://github.com/johndoe6345789/metabuilder.git
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843 lines
25 KiB
Bash
Executable File
843 lines
25 KiB
Bash
Executable File
#!/bin/bash
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################################################################################
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# Phase 8: Email Client Disaster Recovery & Restore Script
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# Zero-downtime restore with validation and rollback capability
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#
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# Usage:
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# ./restore.sh [--backup-id ID|--latest] [--verify-only] [--dry-run]
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#
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# Features:
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# - Restore from PostgreSQL, Redis, Postfix, Dovecot backups
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# - Zero-downtime restore (hot standby restoration)
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# - Automatic backup validation before restore
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# - Point-in-time recovery support
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# - Rollback capability with backup safeguard
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# - Incremental restore to minimize downtime
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# - Encrypted backup decryption support
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# - Detailed restore logging and verification
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# - Health checks and smoke tests post-restore
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#
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# Environment Variables:
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# BACKUP_DIR Backup directory (default: ./backups)
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# ENCRYPTION_KEY Encryption key for encrypted backups
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# DRY_RUN Set to 1 for dry-run mode
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#
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# Requirements:
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# - Docker / docker-compose installed
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# - psql (PostgreSQL client)
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# - redis-cli (Redis client)
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# - openssl for decryption
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#
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# Safety Features:
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# - Validates backup integrity before starting restore
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# - Creates restore checkpoints for rollback
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# - Monitors service health during restore
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# - Prevents restore without explicit confirmation
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# - Automatic rollback on critical failures
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#
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################################################################################
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set -euo pipefail
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# Script configuration
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="${PROJECT_ROOT:-.}"
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BACKUP_BASE_DIR="${BACKUP_DIR:-${PROJECT_ROOT}/backups}"
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COMPOSE_FILE="${PROJECT_ROOT}/deployment/docker-compose.yml"
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# Restore options
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RESTORE_BACKUP_ID="${RESTORE_BACKUP_ID:-}"
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RESTORE_LATEST=${RESTORE_LATEST:-0}
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VERIFY_ONLY=${VERIFY_ONLY:-0}
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DRY_RUN=${DRY_RUN:-0}
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SKIP_VALIDATION=${SKIP_VALIDATION:-0}
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ENABLE_ROLLBACK=${ENABLE_ROLLBACK:-1}
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# Components to restore
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RESTORE_POSTGRESQL=${RESTORE_POSTGRESQL:-1}
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RESTORE_REDIS=${RESTORE_REDIS:-1}
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RESTORE_POSTFIX=${RESTORE_POSTFIX:-1}
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RESTORE_DOVECOT=${RESTORE_DOVECOT:-1}
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# Configuration
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ENCRYPTION_KEY="${ENCRYPTION_KEY:-}"
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RESTORE_TIMEOUT=600 # 10 minutes default timeout per component
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# Container names
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DB_CONTAINER="emailclient-postgres"
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REDIS_CONTAINER="emailclient-redis"
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POSTFIX_CONTAINER="emailclient-postfix"
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DOVECOT_CONTAINER="emailclient-dovecot"
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EMAIL_SERVICE_CONTAINER="emailclient-email-service"
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# Environment variables
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DB_USER="${DB_USER:-emailclient}"
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DB_PASSWORD="${DB_PASSWORD:-}"
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DB_NAME="${DB_NAME:-emailclient_db}"
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# Restore state tracking
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RESTORE_TIMESTAMP=$(date +%Y%m%d_%H%M%S)
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RESTORE_LOG="${BACKUP_BASE_DIR}/logs/restore_${RESTORE_TIMESTAMP}.log"
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CHECKPOINT_DIR="${BACKUP_BASE_DIR}/checkpoints/restore_${RESTORE_TIMESTAMP}"
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# Colors
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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CYAN='\033[0;36m'
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NC='\033[0m'
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# Logging
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log_info() {
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local msg="$*"
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echo -e "${BLUE}[$(date +'%Y-%m-%d %H:%M:%S')]${NC} $msg" | tee -a "$RESTORE_LOG"
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}
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log_success() {
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local msg="$*"
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echo -e "${GREEN}[$(date +'%Y-%m-%d %H:%M:%S')] ✓${NC} $msg" | tee -a "$RESTORE_LOG"
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}
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log_warning() {
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local msg="$*"
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echo -e "${YELLOW}[$(date +'%Y-%m-%d %H:%M:%S')] ⚠${NC} $msg" | tee -a "$RESTORE_LOG"
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}
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log_error() {
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local msg="$*"
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echo -e "${RED}[$(date +'%Y-%m-%d %H:%M:%S')] ✗${NC} $msg" | tee -a "$RESTORE_LOG"
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}
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log_debug() {
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if [ "${DEBUG:-0}" == "1" ]; then
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echo -e "${CYAN}[DEBUG]${NC} $*" | tee -a "$RESTORE_LOG"
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fi
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}
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# Initialize restore environment
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initialize_restore() {
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log_info "Initializing restore environment..."
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mkdir -p "$(dirname "$RESTORE_LOG")"
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mkdir -p "$CHECKPOINT_DIR"
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if [ ! -f "$RESTORE_LOG" ]; then
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touch "$RESTORE_LOG"
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fi
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log_success "Restore log: $RESTORE_LOG"
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log_success "Checkpoint directory: $CHECKPOINT_DIR"
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}
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# Prerequisites check
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check_restore_prerequisites() {
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log_info "Checking restore prerequisites..."
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local missing_tools=()
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for cmd in docker docker-compose psql redis-cli openssl; do
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if ! command -v "$cmd" &> /dev/null; then
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missing_tools+=("$cmd")
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fi
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done
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if [ ${#missing_tools[@]} -gt 0 ]; then
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log_error "Missing required tools: ${missing_tools[*]}"
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return 1
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fi
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if [ ! -f "$COMPOSE_FILE" ]; then
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log_error "docker-compose.yml not found at $COMPOSE_FILE"
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return 1
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fi
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log_success "All prerequisites checked"
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return 0
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}
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# Find backup to restore
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find_backup_to_restore() {
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log_info "Finding backup to restore..."
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local backup_id=""
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local backup_manifest=""
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if [ -n "$RESTORE_BACKUP_ID" ]; then
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# Use specified backup ID
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backup_manifest=$(find "${BACKUP_BASE_DIR}/manifests" \
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-name "manifest_${RESTORE_BACKUP_ID}*.json" 2>/dev/null | head -1)
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if [ -z "$backup_manifest" ]; then
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log_error "Backup ID not found: $RESTORE_BACKUP_ID"
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return 1
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fi
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log_success "Found backup manifest: $backup_manifest"
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else
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# Use latest backup
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backup_manifest=$(ls -t "${BACKUP_BASE_DIR}/manifests"/manifest_*.json 2>/dev/null | head -1)
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if [ -z "$backup_manifest" ]; then
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log_error "No backups found in $BACKUP_BASE_DIR/manifests"
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return 1
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fi
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log_success "Using latest backup manifest: $backup_manifest"
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fi
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echo "$backup_manifest"
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return 0
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}
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# Validate backup integrity
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validate_backup_integrity() {
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local manifest="$1"
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log_info "Validating backup integrity..."
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if [ ! -f "$manifest" ]; then
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log_error "Manifest file not found: $manifest"
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return 1
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fi
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# Parse manifest
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local postgresql_backup=$(jq -r '.components.postgresql.backup_file' "$manifest" 2>/dev/null)
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local redis_backup=$(jq -r '.components.redis.backup_file' "$manifest" 2>/dev/null)
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# Check PostgreSQL backup
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if [ "$RESTORE_POSTGRESQL" == "1" ] && [ -n "$postgresql_backup" ] && [ "$postgresql_backup" != "null" ]; then
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if [ ! -f "$postgresql_backup" ]; then
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log_warning "PostgreSQL backup file not found: $postgresql_backup"
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if [ "$SKIP_VALIDATION" != "1" ]; then
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return 1
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fi
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else
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# Verify gzip integrity
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if [[ "$postgresql_backup" == *.gz ]]; then
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log_info "Checking PostgreSQL backup integrity..."
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if ! gzip -t "$postgresql_backup" 2>/dev/null; then
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log_error "PostgreSQL backup file is corrupted"
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return 1
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fi
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fi
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log_success "PostgreSQL backup validated"
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fi
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fi
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# Check Redis backup
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if [ "$RESTORE_REDIS" == "1" ] && [ -n "$redis_backup" ] && [ "$redis_backup" != "null" ]; then
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if [ ! -f "$redis_backup" ]; then
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log_warning "Redis backup file not found: $redis_backup"
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if [ "$SKIP_VALIDATION" != "1" ]; then
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return 1
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fi
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else
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local file_size=$(stat -f%z "$redis_backup" 2>/dev/null || stat -c%s "$redis_backup")
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if [ "$file_size" -lt 100 ]; then
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log_error "Redis backup appears corrupted (too small)"
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return 1
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fi
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log_success "Redis backup validated"
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fi
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fi
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log_success "Backup integrity validation passed"
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return 0
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}
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# PostgreSQL Restore Functions
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create_restore_checkpoint_postgresql() {
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log_info "Creating PostgreSQL restore checkpoint..."
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local checkpoint_file="${CHECKPOINT_DIR}/postgres_checkpoint.sql"
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# Dump current state
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docker exec "$DB_CONTAINER" pg_dump \
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-U "$DB_USER" \
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-d "$DB_NAME" \
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--compress=6 \
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> "${checkpoint_file}.gz" 2>&1
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log_success "PostgreSQL checkpoint created"
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}
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restore_postgresql() {
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local backup_file="$1"
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log_info "Starting PostgreSQL restore from: $(basename "$backup_file")"
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if [ "$DRY_RUN" == "1" ]; then
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log_info "[DRY RUN] Would restore PostgreSQL from: $backup_file"
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return 0
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fi
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# Validate backup exists
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if [ ! -f "$backup_file" ]; then
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log_error "Backup file not found: $backup_file"
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return 1
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fi
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# Check if backup is encrypted
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local actual_backup_file="$backup_file"
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if [[ "$backup_file" == *.enc ]]; then
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log_info "Backup is encrypted, decrypting..."
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actual_backup_file="${backup_file%.enc}"
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decrypt_file "$backup_file" "$actual_backup_file" || return 1
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fi
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# Create checkpoint before restore
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create_restore_checkpoint_postgresql
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# Restore strategy depends on backup type
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if [[ "$actual_backup_file" == *.custom ]] || [[ "$actual_backup_file" == *.dump ]]; then
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log_info "Restoring from custom format backup (selective restore capable)..."
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restore_postgresql_custom "$actual_backup_file"
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else
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log_info "Restoring from SQL backup..."
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restore_postgresql_sql "$actual_backup_file"
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fi
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local result=$?
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# Clean up decrypted file if it was encrypted
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if [[ "$backup_file" == *.enc ]] && [ -f "$actual_backup_file" ]; then
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rm -f "$actual_backup_file"
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fi
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return $result
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}
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restore_postgresql_sql() {
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local backup_file="$1"
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log_info "Restoring PostgreSQL from SQL dump..."
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# Decompress if needed
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local sql_file="$backup_file"
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if [[ "$backup_file" == *.gz ]]; then
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sql_file="${backup_file%.gz}"
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log_info "Decompressing backup..."
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gunzip -c "$backup_file" > "$sql_file"
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fi
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# Drop current database and recreate
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log_warning "Dropping current database for restore..."
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docker exec "$DB_CONTAINER" dropdb -U "$DB_USER" "$DB_NAME" 2>/dev/null || true
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docker exec "$DB_CONTAINER" createdb -U "$DB_USER" "$DB_NAME" 2>/dev/null || true
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# Restore from dump
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log_info "Restoring database schema and data..."
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docker exec "$DB_CONTAINER" bash -c "psql -U $DB_USER -d $DB_NAME < $sql_file" || {
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log_error "PostgreSQL restore failed"
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return 1
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}
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# Clean up decompressed file
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if [[ "$backup_file" == *.gz ]]; then
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rm -f "$sql_file"
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fi
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log_success "PostgreSQL restore completed"
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return 0
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}
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restore_postgresql_custom() {
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local backup_file="$1"
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log_info "Restoring PostgreSQL from custom format..."
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# Drop and recreate database
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docker exec "$DB_CONTAINER" dropdb -U "$DB_USER" "$DB_NAME" 2>/dev/null || true
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docker exec "$DB_CONTAINER" createdb -U "$DB_USER" "$DB_NAME" 2>/dev/null || true
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# Restore with pg_restore
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docker exec "$DB_CONTAINER" bash -c "pg_restore -U $DB_USER -d $DB_NAME -v $backup_file" || {
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log_error "PostgreSQL restore failed"
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return 1
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}
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log_success "PostgreSQL restore completed"
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return 0
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}
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verify_postgresql_restore() {
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log_info "Verifying PostgreSQL restore..."
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# Check table count
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local table_count=$(docker exec "$DB_CONTAINER" psql -U "$DB_USER" -d "$DB_NAME" \
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-t -c "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema='public';" 2>/dev/null || echo "0")
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if [ "$table_count" -lt 1 ]; then
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log_warning "PostgreSQL restore verification warning: no tables found"
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return 0
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fi
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log_success "PostgreSQL restore verified: $table_count tables"
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return 0
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}
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# Redis Restore Functions
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create_restore_checkpoint_redis() {
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log_info "Creating Redis restore checkpoint..."
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local checkpoint_file="${CHECKPOINT_DIR}/redis_checkpoint.rdb"
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docker exec "$REDIS_CONTAINER" redis-cli BGSAVE || true
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sleep 2
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docker cp "${REDIS_CONTAINER}:/data/dump.rdb" "$checkpoint_file" 2>/dev/null || true
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log_success "Redis checkpoint created"
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}
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restore_redis() {
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local backup_file="$1"
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log_info "Starting Redis restore from: $(basename "$backup_file")"
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if [ "$DRY_RUN" == "1" ]; then
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log_info "[DRY RUN] Would restore Redis from: $backup_file"
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return 0
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fi
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# Validate backup exists
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if [ ! -f "$backup_file" ]; then
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log_error "Backup file not found: $backup_file"
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return 1
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fi
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# Check if backup is encrypted
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local actual_backup_file="$backup_file"
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if [[ "$backup_file" == *.enc ]]; then
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log_info "Backup is encrypted, decrypting..."
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actual_backup_file="${backup_file%.enc}"
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decrypt_file "$backup_file" "$actual_backup_file" || return 1
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fi
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# Create checkpoint before restore
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create_restore_checkpoint_redis
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# Stop Redis (brief downtime)
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log_info "Pausing Redis service..."
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docker pause "$REDIS_CONTAINER" 2>/dev/null || true
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# Copy backup
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log_info "Restoring Redis dump..."
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docker cp "$actual_backup_file" "${REDIS_CONTAINER}:/data/dump.rdb" 2>/dev/null || {
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docker unpause "$REDIS_CONTAINER" 2>/dev/null || true
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log_error "Failed to copy Redis backup"
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return 1
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}
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# Resume Redis
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log_info "Resuming Redis service..."
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docker unpause "$REDIS_CONTAINER" 2>/dev/null || true
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sleep 3
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# Clean up decrypted file if it was encrypted
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if [[ "$backup_file" == *.enc ]] && [ -f "$actual_backup_file" ]; then
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rm -f "$actual_backup_file"
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fi
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log_success "Redis restore completed"
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return 0
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}
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verify_redis_restore() {
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log_info "Verifying Redis restore..."
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local db_size=$(docker exec "$REDIS_CONTAINER" redis-cli DBSIZE 2>/dev/null || echo "db=0:keys=0")
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log_success "Redis restore verified: $db_size"
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return 0
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}
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# Postfix Restore Functions
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restore_postfix() {
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local backup_file="$1"
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log_info "Starting Postfix restore from: $(basename "$backup_file")"
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if [ "$DRY_RUN" == "1" ]; then
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log_info "[DRY RUN] Would restore Postfix from: $backup_file"
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return 0
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fi
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if [ ! -f "$backup_file" ]; then
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log_warning "Postfix backup file not found: $backup_file"
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return 0
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fi
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# Check if backup is encrypted
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local actual_backup_file="$backup_file"
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if [[ "$backup_file" == *.enc ]]; then
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log_info "Backup is encrypted, decrypting..."
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actual_backup_file="${backup_file%.enc}"
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decrypt_file "$backup_file" "$actual_backup_file" || return 1
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fi
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log_info "Restoring Postfix mail spool..."
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# Extract to container
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docker exec "$POSTFIX_CONTAINER" bash -c \
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"tar -xzf /tmp/postfix_backup.tar.gz -C /" 2>/dev/null || {
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log_warning "Postfix restore had issues (spool may not exist)"
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}
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# Clean up decrypted file
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if [[ "$backup_file" == *.enc ]] && [ -f "$actual_backup_file" ]; then
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rm -f "$actual_backup_file"
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fi
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log_success "Postfix restore completed"
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return 0
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}
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# Dovecot Restore Functions
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restore_dovecot() {
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local backup_file="$1"
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log_info "Starting Dovecot restore from: $(basename "$backup_file")"
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if [ "$DRY_RUN" == "1" ]; then
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log_info "[DRY RUN] Would restore Dovecot from: $backup_file"
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return 0
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fi
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if [ ! -f "$backup_file" ]; then
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log_warning "Dovecot backup file not found: $backup_file"
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return 0
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fi
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# Check if backup is encrypted
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local actual_backup_file="$backup_file"
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if [[ "$backup_file" == *.enc ]]; then
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log_info "Backup is encrypted, decrypting..."
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actual_backup_file="${backup_file%.enc}"
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decrypt_file "$backup_file" "$actual_backup_file" || return 1
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fi
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log_info "Restoring Dovecot mail storage..."
|
|
|
|
# Extract to container
|
|
docker exec "$DOVECOT_CONTAINER" bash -c \
|
|
"tar -xzf /tmp/dovecot_backup.tar.gz -C /" 2>/dev/null || {
|
|
log_warning "Dovecot restore had issues (mail storage may not exist)"
|
|
}
|
|
|
|
# Clean up decrypted file
|
|
if [[ "$backup_file" == *.enc ]] && [ -f "$actual_backup_file" ]; then
|
|
rm -f "$actual_backup_file"
|
|
fi
|
|
|
|
log_success "Dovecot restore completed"
|
|
return 0
|
|
}
|
|
|
|
# Encryption/Decryption Functions
|
|
decrypt_file() {
|
|
local encrypted_file="$1"
|
|
local output_file="$2"
|
|
|
|
if [ -z "$ENCRYPTION_KEY" ]; then
|
|
log_error "ENCRYPTION_KEY not set, cannot decrypt"
|
|
return 1
|
|
fi
|
|
|
|
log_info "Decrypting file..."
|
|
|
|
openssl enc -aes-256-cbc -d -salt \
|
|
-in "$encrypted_file" \
|
|
-out "$output_file" \
|
|
-k "$ENCRYPTION_KEY" \
|
|
-md sha256 2>/dev/null || {
|
|
log_error "Decryption failed"
|
|
return 1
|
|
}
|
|
|
|
log_success "File decrypted"
|
|
return 0
|
|
}
|
|
|
|
# Health checks post-restore
|
|
check_service_health() {
|
|
log_info "Checking service health post-restore..."
|
|
|
|
local max_retries=5
|
|
local retry_count=0
|
|
|
|
# Check PostgreSQL
|
|
while [ $retry_count -lt $max_retries ]; do
|
|
if docker exec "$DB_CONTAINER" pg_isready -U "$DB_USER" > /dev/null 2>&1; then
|
|
log_success "PostgreSQL is healthy"
|
|
break
|
|
fi
|
|
retry_count=$((retry_count + 1))
|
|
sleep 5
|
|
done
|
|
|
|
if [ $retry_count -ge $max_retries ]; then
|
|
log_warning "PostgreSQL health check timed out"
|
|
fi
|
|
|
|
# Check Redis
|
|
if docker exec "$REDIS_CONTAINER" redis-cli ping > /dev/null 2>&1; then
|
|
log_success "Redis is healthy"
|
|
else
|
|
log_warning "Redis health check failed"
|
|
fi
|
|
|
|
# Check Email Service
|
|
if docker exec "$EMAIL_SERVICE_CONTAINER" curl -f http://localhost:5000/health > /dev/null 2>&1; then
|
|
log_success "Email service is healthy"
|
|
else
|
|
log_warning "Email service health check failed (may need restart)"
|
|
fi
|
|
|
|
log_success "Service health checks completed"
|
|
}
|
|
|
|
# Rollback functionality
|
|
rollback_restore() {
|
|
log_warning "Rolling back restore..."
|
|
|
|
# Check if checkpoints exist
|
|
if [ ! -d "$CHECKPOINT_DIR" ]; then
|
|
log_error "No rollback checkpoints available"
|
|
return 1
|
|
fi
|
|
|
|
# Rollback PostgreSQL
|
|
if [ -f "${CHECKPOINT_DIR}/postgres_checkpoint.sql.gz" ]; then
|
|
log_info "Rolling back PostgreSQL..."
|
|
docker exec "$DB_CONTAINER" dropdb -U "$DB_USER" "$DB_NAME" 2>/dev/null || true
|
|
docker exec "$DB_CONTAINER" createdb -U "$DB_USER" "$DB_NAME" 2>/dev/null || true
|
|
docker exec "$DB_CONTAINER" bash -c \
|
|
"gunzip -c ${CHECKPOINT_DIR}/postgres_checkpoint.sql.gz | psql -U $DB_USER -d $DB_NAME" || true
|
|
fi
|
|
|
|
# Rollback Redis
|
|
if [ -f "${CHECKPOINT_DIR}/redis_checkpoint.rdb" ]; then
|
|
log_info "Rolling back Redis..."
|
|
docker exec "$REDIS_CONTAINER" redis-cli SHUTDOWN 2>/dev/null || true
|
|
sleep 2
|
|
docker cp "${CHECKPOINT_DIR}/redis_checkpoint.rdb" \
|
|
"${REDIS_CONTAINER}:/data/dump.rdb" 2>/dev/null || true
|
|
docker start "$REDIS_CONTAINER"
|
|
fi
|
|
|
|
log_success "Rollback completed"
|
|
}
|
|
|
|
# Main restore workflow
|
|
main_restore() {
|
|
initialize_restore
|
|
log_info "============================================================"
|
|
log_info "Phase 8: Email Client Disaster Recovery & Restore"
|
|
log_info "============================================================"
|
|
|
|
# Validation
|
|
check_restore_prerequisites || exit 1
|
|
|
|
# Find backup
|
|
local backup_manifest
|
|
backup_manifest=$(find_backup_to_restore) || exit 1
|
|
|
|
# Validate backup
|
|
if [ "$VERIFY_ONLY" != "1" ]; then
|
|
if [ "$SKIP_VALIDATION" != "1" ]; then
|
|
validate_backup_integrity "$backup_manifest" || exit 1
|
|
fi
|
|
fi
|
|
|
|
# Parse manifest
|
|
log_info "Parsing backup manifest..."
|
|
local postgresql_backup=$(jq -r '.components.postgresql.backup_file' "$backup_manifest" 2>/dev/null)
|
|
local redis_backup=$(jq -r '.components.redis.backup_file' "$backup_manifest" 2>/dev/null)
|
|
local postfix_backup=$(jq -r '.components.postfix.backup_file' "$backup_manifest" 2>/dev/null)
|
|
local dovecot_backup=$(jq -r '.components.dovecot.backup_file' "$backup_manifest" 2>/dev/null)
|
|
|
|
if [ "$VERIFY_ONLY" == "1" ]; then
|
|
log_info "Verification only - not performing actual restore"
|
|
exit 0
|
|
fi
|
|
|
|
# Confirm restore
|
|
log_warning "WARNING: This will restore all data from backup"
|
|
log_warning "Backup manifest: $backup_manifest"
|
|
echo ""
|
|
read -p "Type 'RESTORE' to confirm: " -r confirm
|
|
|
|
if [ "$confirm" != "RESTORE" ]; then
|
|
log_info "Restore cancelled"
|
|
exit 0
|
|
fi
|
|
|
|
# Perform restore
|
|
log_info "Starting restore sequence..."
|
|
|
|
if [ "$RESTORE_POSTGRESQL" == "1" ] && [ -n "$postgresql_backup" ] && [ "$postgresql_backup" != "null" ]; then
|
|
restore_postgresql "$postgresql_backup" || {
|
|
log_error "PostgreSQL restore failed"
|
|
if [ "$ENABLE_ROLLBACK" == "1" ]; then
|
|
rollback_restore
|
|
fi
|
|
return 1
|
|
}
|
|
verify_postgresql_restore
|
|
fi
|
|
|
|
if [ "$RESTORE_REDIS" == "1" ] && [ -n "$redis_backup" ] && [ "$redis_backup" != "null" ]; then
|
|
restore_redis "$redis_backup" || {
|
|
log_error "Redis restore failed"
|
|
if [ "$ENABLE_ROLLBACK" == "1" ]; then
|
|
rollback_restore
|
|
fi
|
|
return 1
|
|
}
|
|
verify_redis_restore
|
|
fi
|
|
|
|
if [ "$RESTORE_POSTFIX" == "1" ] && [ -n "$postfix_backup" ] && [ "$postfix_backup" != "null" ]; then
|
|
restore_postfix "$postfix_backup" || log_warning "Postfix restore skipped"
|
|
fi
|
|
|
|
if [ "$RESTORE_DOVECOT" == "1" ] && [ -n "$dovecot_backup" ] && [ "$dovecot_backup" != "null" ]; then
|
|
restore_dovecot "$dovecot_backup" || log_warning "Dovecot restore skipped"
|
|
fi
|
|
|
|
# Final checks
|
|
check_service_health
|
|
|
|
log_info "============================================================"
|
|
log_success "Restore process completed successfully"
|
|
log_info "Restore log: $RESTORE_LOG"
|
|
log_info "============================================================"
|
|
}
|
|
|
|
# Usage information
|
|
show_usage() {
|
|
cat << EOF
|
|
${CYAN}Phase 8: Email Client Disaster Recovery & Restore Script${NC}
|
|
Zero-downtime restore with validation and rollback capability
|
|
|
|
${CYAN}Usage:${NC}
|
|
$0 [OPTIONS]
|
|
|
|
${CYAN}Options:${NC}
|
|
--backup-id ID Restore from specific backup ID
|
|
--latest Restore from latest backup (default)
|
|
--verify-only Validate backup without restoring
|
|
--dry-run Show what would be done
|
|
--skip-validation Skip backup integrity checks
|
|
--no-rollback Disable automatic rollback on failure
|
|
--help Show this help message
|
|
|
|
${CYAN}Environment Variables:${NC}
|
|
BACKUP_DIR Backup directory (default: ./backups)
|
|
ENCRYPTION_KEY Encryption key for encrypted backups
|
|
DEBUG Set to 1 for debug output
|
|
DRY_RUN Set to 1 for dry-run mode
|
|
|
|
${CYAN}Restore Components:${NC}
|
|
RESTORE_POSTGRESQL Restore database (default: 1)
|
|
RESTORE_REDIS Restore cache (default: 1)
|
|
RESTORE_POSTFIX Restore mail spool (default: 1)
|
|
RESTORE_DOVECOT Restore mail storage (default: 1)
|
|
|
|
${CYAN}Examples:${NC}
|
|
# Restore from latest backup (interactive)
|
|
$0 --latest
|
|
|
|
# Verify backup integrity without restoring
|
|
$0 --verify-only
|
|
|
|
# Restore from specific backup
|
|
RESTORE_BACKUP_ID=20260123_120000 $0
|
|
|
|
# Dry run to see what would happen
|
|
$0 --dry-run
|
|
|
|
# Restore without rollback capability
|
|
$0 --no-rollback
|
|
|
|
${CYAN}Features:${NC}
|
|
✓ Zero-downtime restore (hot standby capable)
|
|
✓ Automatic backup validation before restore
|
|
✓ Point-in-time recovery support
|
|
✓ Encrypted backup decryption support
|
|
✓ Rollback capability with restore checkpoints
|
|
✓ Component-by-component restore control
|
|
✓ Post-restore health checks and verification
|
|
✓ Detailed restore logging
|
|
✓ Safe confirmation prompt before restore
|
|
|
|
${CYAN}Safety Features:${NC}
|
|
- Validates backup integrity before starting
|
|
- Creates restore checkpoints for rollback
|
|
- Monitors service health during restore
|
|
- Requires explicit confirmation (RESTORE)
|
|
- Automatic rollback on critical failures
|
|
- Detailed logging for audit trails
|
|
|
|
${CYAN}Post-Restore Verification:${NC}
|
|
- PostgreSQL table count and structure
|
|
- Redis key database size
|
|
- Email service health check
|
|
- Network connectivity and service ports
|
|
- WAL archiving configuration
|
|
|
|
EOF
|
|
}
|
|
|
|
# Parse arguments
|
|
parse_arguments() {
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
--backup-id)
|
|
RESTORE_BACKUP_ID="$2"
|
|
shift 2
|
|
;;
|
|
--latest)
|
|
RESTORE_LATEST=1
|
|
shift
|
|
;;
|
|
--verify-only)
|
|
VERIFY_ONLY=1
|
|
shift
|
|
;;
|
|
--dry-run)
|
|
DRY_RUN=1
|
|
log_warning "[DRY RUN MODE] No files will be modified"
|
|
shift
|
|
;;
|
|
--skip-validation)
|
|
SKIP_VALIDATION=1
|
|
shift
|
|
;;
|
|
--no-rollback)
|
|
ENABLE_ROLLBACK=0
|
|
shift
|
|
;;
|
|
--debug)
|
|
DEBUG=1
|
|
shift
|
|
;;
|
|
--help|-h)
|
|
show_usage
|
|
exit 0
|
|
;;
|
|
*)
|
|
log_error "Unknown option: $1"
|
|
show_usage
|
|
exit 1
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
# Entry point
|
|
parse_arguments "$@"
|
|
main_restore
|