Change: 0.6.0 - SSL, housekeeper cleanup, short flags, various improvemets. Check changelog.

partitioning/CHANGELOG.md

@@ -5,6 +5,32 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.6.0] - 2025-12-20
+### Added
+- **SSL**: Added support for simplified SSL configuration (`ssl: required`) for Managed/Cloud databases and updated Wizard/Config.
+- **Safety**: Added automatic cleanup of `housekeeper` table during init (targeted) and conflict detection during maintenance.
+- **CLI**: Added short flags for all arguments (`-vv`, `-f`, `-d`, `-s`, `-w`).
+- **Validation**: Enforced strict unit validation for retention periods and strict table existence checks.
+- **Error Handling**: Improved error reporting used to identify specific tables causing configuration errors.
+
+### Changed
+- **CLI**: Refactored `--init` and `--fast-init` into mutually exclusive standalone commands (Breaking Change).
+- **CLI**: Reorganized argument parsing logic for better maintainability.
+- **Safety**: Updated initialization warnings to explicitly mention duration ("SEVERAL HOURS") and disk space requirements.
+- **Logic**: Refined housekeeper conflict check to only warn about tables actively configured for partitioning.
+
+## [0.5.0] - 2025-12-16
+### Added
+- **Wizard**: Added interactive configuration wizard (`--wizard`).
+- **CLI**: Added `--fast-init` flag to skip table scanning during initialization, instead of config option.
+- **Monitoring**: Added `--stats` argument to output JSON statistics (Size, Count, Days Left).
+- **Template**: Updated `zabbix_mysql_partitioning_template.yaml` to use Master/Dependent items for efficient stats collection.
+
+### Changed
+- **Config**: Removed `initial_partitioning_start` from configuration file (moved to `--fast-init`).
+- **Template**: Replaced legacy check item with comprehensive stats master item.
+- **CLI**: Removed legacy `--check-days` argument (replaced by `--stats`).
+
 ## [0.4.1] - 2025-12-16
 ### Added
 - **CLI**: Added `--verbose` / `-v` flag to switch between INFO (default) and DEBUG logging levels.

partitioning/README.md

@@ -47,8 +47,16 @@ The script manages MySQL table partitions based on time (Range Partitioning on t
 ---
 
 ## 3. Configuration
-Edit `/etc/zabbix/zabbix_partitioning.conf`:
+The preferred way to create the configuration file is using the **Interactive Wizard**:
 
+```bash
+/opt/zabbix_partitioning/zabbix_partitioning.py --wizard
+```
+
+Follow the on-screen prompts to configure your database connection, retention periods, and other settings. The wizard will generate the YAML configuration file for you.
+
+### Automatic Config Structure (Reference)
+If you prefer to edit manually `/etc/zabbix/zabbix_partitioning.conf`:
 ```yaml
 database:
     host: localhost
@@ -56,6 +64,7 @@ database:
     passwd: YOUR_PASSWORD
     db: zabbix
     # port: 3306  # Optional, default is 3306
+    # socket: /var/run/mysqld/mysqld.sock # Overrides host if present
 
 partitions:
     daily:
@@ -74,9 +83,7 @@ partitions:
   - **`yearly`**: Partitions are created for each year. 
   - Retention Format: `14d` (days), `12w` (weeks), `12m` (months), `1y` (years).
 
-- **`initial_partitioning_start`**: Controls how the very FIRST partition is determined during initialization (`--init` mode).
-  - `db_min`: (Default) Queries the table for the oldest record (`MIN(clock)`). Accurate but **slow** on large tables.
-  - `retention`: (Recommended for large DBs) Skips the query. Calculates the start date as `Now - Retention Period`. Creates a single `p_archive` partition for all data older than that date.
+- **`replicate_sql`**: Controls MySQL Binary Logging for partitioning commands.
 
 - **`premake`**: Number of future partitions to create in advance.
   - Default: `10`. Ensures you have a buffer if the script fails to run for a few days.
@@ -90,7 +97,25 @@ partitions:
 
 ---
 
-## 4. Zabbix Preparation (CRITICAL)
+---
+
+## 4. Runtime Parameters
+
+| Argument | Description |
+|---|---|
+| `-c`, `--config FILE` | Path to configuration file (Default: `/etc/zabbix/zabbix_partitioning.conf`) |
+| `-i`, `--init` | Initialize partitions (Standard Mode: Scan Table). |
+| `-f`, `--fast-init` | Initialize partitions (Fast Mode: Skip Scan, use Retention). |
+| `--wizard` | Launch interactive configuration wizard. |
+| `-r`, `--dry-run` | Simulate queries without executing. Logs expected actions (Safe mode). |
+| `-v`, `--verbose` | Enable debug logging (DEBUG level). |
+| `--stats TABLE` | Output JSON statistics (Size, Count, Days Left) for a specific table. |
+| `--discovery` | Output Zabbix Low-Level Discovery (LLD) JSON. |
+| `-V`, `--version` | Show script version. |
+
+---
+
+## 5. Zabbix Preparation (CRITICAL)
 Before partitioning, you **must disable** Zabbix's internal housekeeping for the tables you intend to partition. If you don't, Zabbix will try to delete individual rows while the script tries to drop partitions, causing conflicts.
 
 1.  Log in to Zabbix Web Interface.
@@ -102,38 +127,52 @@ Before partitioning, you **must disable** Zabbix's internal housekeeping for the
 
 ---
 
-## 5. Initialization
+## 6. Initialization
 This step converts existing standard tables into partitioned tables.
 
 1.  **Dry Run** (Verify what will happen):
     ```bash
     /opt/zabbix_partitioning/zabbix_partitioning.py --init --dry-run
     ```
-    *Check the output for any errors.*
 
 2.  **Execute Initialization**:
+    > [!WARNING]
+    > For large databases, standard initialization may take **SEVERAL HOURS** and require significant disk space (approx 2x table size).
+
+    There are two strategies for initialization:
+
+    **A. Standard Initialization (`--init`)**:
+    Scans the database to find the oldest record (`MIN(clock)`) and creates partitions from that point forward.
+    *Best for smaller databases or when you need to retain ALL existing data.*
     ```bash
     /opt/zabbix_partitioning/zabbix_partitioning.py --init
     ```
-    *This may take time depending on table size.*
+
+    **B. Fast Initialization (`--fast-init`)**:
+    Skips the slow table scan. It calculates the start date based on your configured **Retention Period** (e.g., `Now - 365d`).
+    It creates a single catch-all `p_archive` partition for all data older than the retention start date, then creates granular partitions forward.
+    *Recommended for large databases to avoid long table locks/scans.*
+    ```bash
+    /opt/zabbix_partitioning/zabbix_partitioning.py --fast-init
+    ```
 
 ---
 
-## 6. Automation (Cron Job)
-Set up a daily cron job to create new partitions and remove old ones.
+## 7. Automation (Cron Job)
+Set up a cron job to create new partitions and remove old ones.
 
 1.  Open crontab:
     ```bash
     crontab -e
     ```
-2.  Add the line (run daily at 00:30):
+2.  Add the line (run twice a day at 00:10 and 04:10):
     ```cron
-    30 0 * * * /usr/bin/python3 /opt/zabbix_partitioning/zabbix_partitioning.py -c /etc/zabbix/zabbix_partitioning.conf >> /var/log/zabbix_partitioning.log 2>&1
+    10 0,4 * * * /usr/bin/python3 /opt/zabbix_partitioning/zabbix_partitioning.py -c /etc/zabbix/zabbix_partitioning.conf >> /var/log/zabbix_partitioning.log 2>&1
     ```
 
 ---
 
-## 7. Automation (Systemd Timer) — Recommended
+## 8. Automation (Systemd Timer) — Recommended
 Alternatively, use systemd timers for more robust scheduling and logging.
 
 1.  **Create Service Unit** (`/etc/systemd/system/zabbix-partitioning.service`):
@@ -151,10 +190,10 @@ Alternatively, use systemd timers for more robust scheduling and logging.
 2.  **Create Timer Unit** (`/etc/systemd/system/zabbix-partitioning.timer`):
     ```ini
     [Unit]
-    Description=Run Zabbix Partitioning Daily
+    Description=Run Zabbix Partitioning twice a day
 
     [Timer]
-    OnCalendar=*-*-* 00:30:00
+    OnCalendar=*-*-* 00:10:00 *-*-* 04:10:00
     Persistent=true
 
     [Install]
@@ -176,12 +215,12 @@ Alternatively, use systemd timers for more robust scheduling and logging.
 
 ---
 
-## 8. Troubleshooting
+## 9. Troubleshooting
 - **Connection Refused**: Check `host`, `port` in config. Ensure MySQL is running.
 - **Access Denied (1227)**: The DB user needs `SUPER` privileges to disable binary logging (`replicate_sql: False`). Either grant the privilege or set `replicate_sql: True` (if replication load is acceptable).
 - **Primary Key Error**: "Primary Key does not include 'clock'". The table cannot be partitioned by range on `clock` without schema changes. Remove it from config.
 
-## 9. Docker Usage
+## 10. Docker Usage
 
 You can run the partitioning script as a stateless Docker container. This is ideal for Kubernetes CronJobs or environments where you don't want to manage Python dependencies on the host.
 
@@ -267,8 +306,8 @@ docker run --rm \
 | `RETENTION_TRENDS` | 365d | Retention for `trends*` tables |
 | `RETENTION_AUDIT` | 365d | Retention for `auditlog` (if enabled) |
 | `ENABLE_AUDITLOG_PARTITIONING` | false | Set to `true` to partition `auditlog` |
-| `RUN_MODE` | maintenance | `init`, `maintenance`, `dry-run`, `discovery`, `check` |
-| `CHECK_TARGET` | - | Required if `RUN_MODE=check`. Table name to check (e.g. `history`). |
+| `RUN_MODE` | maintenance | `init`, `maintenance`, `dry-run`, `discovery`, `stats` |
+| `CHECK_TARGET` | - | Required if `RUN_MODE=stats`. Table name to check (e.g. `history`). |
 | `PARTITION_DAILY_[TABLE]` | - | Custom daily retention (e.g., `PARTITION_DAILY_mytable=30d`) |
 | `PARTITION_WEEKLY_[TABLE]` | - | Custom weekly retention |
 | `PARTITION_MONTHLY_[TABLE]` | - | Custom monthly retention |
@@ -282,36 +321,37 @@ docker run --rm \
   zabbix-partitioning
 ```
 
-#### Scenario G: Monitoring (Health Check)
-Check days remaining for a specific table (e.g., `history`). Returns integer days.
+#### Scenario G: Monitoring (Stats)
+Get detailed JSON statistics for a specific table.
 ```bash
 docker run --rm \
   -e DB_HOST=zabbix-db \
-  -e RUN_MODE=check \
+  -e RUN_MODE=stats \
   -e CHECK_TARGET=history \
   zabbix-partitioning
 ```
 
 ---
 
-## 10. Monitoring
+## 11. Monitoring
 The script includes built-in features for monitoring the health of your partitions via Zabbix.
 
 ### 10.1 CLI Usage
 - **Discovery (LLD)**:
+  Output the list of configured tables for Zabbix Discovery rules.
   ```bash
   ./zabbix_partitioning.py --discovery
   # Output: [{"{#TABLE}": "history", "{#PERIOD}": "daily"}, ...]
   ```
-- **Check Days**:
+- **Statistics (JSON)**:
+  Get detailed stats (Size, Partition Count, Days Remaining).
   ```bash
-  ./zabbix_partitioning.py --check-days history
-  # Output: 30 (integer days remaining)
+  ./zabbix_partitioning.py --stats history
+  # Output: {"table": "history", "size_bytes": 102400, "partition_count": 5, "days_left": 30}
   ```
 - **Version**:
   ```bash
   ./zabbix_partitioning.py --version
-  # Output: zabbix_partitioning.py 0.3.1-test
   ```
 
 ### 10.2 Zabbix Template

partitioning/script/zabbix_partitioning.conf

@@ -11,6 +11,11 @@ database:
     user: zbx_part
     passwd: <password>
     db: zabbix
+    # ssl: required  # Use system CAs (Mandatory for Azure/AWS/GCP)
+    # ssl:           # Or use custom certificates
+    #   ca: /etc/ssl/certs/ca-cert.pem
+    #   cert: /etc/ssl/certs/client-cert.pem
+    #   key: /etc/ssl/certs/client-key.pem
 
 # partitions: Define retention periods for tables. 
 # Format: table_name: duration (e.g., 14d, 12w, 1m, 1y)

partitioning/script/zabbix_partitioning.py

@@ -1,9 +1,8 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 """
-Zabbix Database Partitioning Management Script
+Zabbix MySQL Partitioning Script
 
-Refactored for Zabbix 7.x compatibility, better maintainability, and standard logging.
 """
 
 import os
@@ -21,7 +20,7 @@ from typing import Optional, Dict, List, Any, Union, Tuple
 from contextlib import contextmanager
 
 # Semantic Versioning
-VERSION = '0.4.1'
+VERSION = '0.6.0'
 
 # Constants
 PART_PERIOD_REGEX = r'([0-9]+)(h|d|m|y)'
@@ -74,7 +73,12 @@ class ZabbixPartitioner:
                 connect_args['host'] = self.db_host
             
             if self.db_ssl:
-                connect_args['ssl'] = self.db_ssl
+                if self.db_ssl is True or (isinstance(self.db_ssl, str) and self.db_ssl.lower() == 'required'):
+                    # Enable SSL with default context (uses system CAs)
+                    # Useful for Cloud DBs (Azure, AWS) that require TLS by default
+                    connect_args['ssl'] = {}
+                else:
+                    connect_args['ssl'] = self.db_ssl
                 # PyMySQL SSL options
                 # Note: valid ssl keys for PyMySQL are 'ca', 'capath', 'cert', 'key', 'cipher', 'check_hostname'
             
@@ -177,9 +181,11 @@ class ZabbixPartitioner:
         """
         Calculate the retention date based on config string (e.g., "30d", "12m").
         """
+        # Ensure string
+        period_str = str(period_str)
         match = re.search(PART_PERIOD_REGEX, period_str)
         if not match:
-            raise ConfigurationError(f"Invalid period format: {period_str}")
+            raise ConfigurationError(f"Invalid period format: '{period_str}' (Expected format like 30d, 12w, 1y)")
         
         amount = int(match.group(1))
         unit = match.group(2)
@@ -233,10 +239,9 @@ class ZabbixPartitioner:
             raise DatabaseError("Could not determine MySQL version")
         
         # MySQL 8.0+ supports partitioning natively
-        # (Assuming MySQL 8+ or MariaDB 10+ for modern Zabbix)
         self.logger.info(f"MySQL Version: {version_str}")
         
-        # 2. Check Zabbix DB Version (optional info)
+        # 2. Check Zabbix DB Version
         try:
             mandatory = self.execute_query('SELECT `mandatory` FROM `dbversion`', fetch='one')
             if mandatory:
@@ -244,6 +249,18 @@ class ZabbixPartitioner:
         except Exception:
              self.logger.warning("Could not read 'dbversion' table. Is this a Zabbix DB?")
 
+    def validate_table_exists(self, table: str) -> bool:
+        """Return True if table exists in the database."""
+        # Use simple select from information_schema
+        exists = self.execute_query(
+            "SELECT 1 FROM information_schema.tables WHERE table_schema = %s AND table_name = %s",
+            (self.db_name, table), fetch='one'
+        )
+        if not exists:
+            self.logger.error(f"Table '{table}' does NOT exist in database '{self.db_name}'. Skipped.")
+            return False
+        return True
+
     def get_table_min_clock(self, table: str) -> Optional[datetime]:
         ts = self.execute_query(f"SELECT MIN(`clock`) FROM `{table}`", fetch='one')
         return datetime.fromtimestamp(int(ts)) if ts else None
@@ -373,95 +390,131 @@ class ZabbixPartitioner:
         for name in to_drop:
             self.execute_query(f"ALTER TABLE `{table}` DROP PARTITION {name}")
 
-    def initialize_partitioning(self, table: str, period: str, premake: int, retention_str: str):
-        """Initial partitioning for a table (convert regular table to partitioned)."""
-        self.logger.info(f"Initializing partitioning for {table}")
-        
+
+
+    def _check_init_prerequisites(self, table: str) -> bool:
+        """Return True if partitioning can proceed."""
         if self.has_incompatible_primary_key(table):
              self.logger.error(f"Cannot partition {table}: Primary Key does not include 'clock' column.")
-             return
-
-        # If already partitioned, skip
+             return False
         if self.get_existing_partitions(table):
              self.logger.info(f"Table {table} is already partitioned.")
-             return
-
-        # init_strategy = self.config.get('initial_partitioning_start', 'db_min') # Removed in favor of flag
-        # but flag needs to be passed to this method or accessed from somewhere.
-        # Since I can't easily change signature without affecting calls, I'll pass it in kwargs or check self.fast_init if I add it to class.
-        pass
+             return False
         
-    def initialize_partitioning(self, table: str, period: str, premake: int, retention_str: str, fast_init: bool = False):
-        """Initial partitioning for a table (convert regular table to partitioned)."""
-        self.logger.info(f"Initializing partitioning for {table}")
+        # Disk Space & Lock Warning
+        msg = (
+            f"WARNING: Partitioning table '{table}' requires creating a copy of the table.\n"
+            f"         Ensure you have free disk space >= Data_Length + Index_Length (approx 2x table size).\n"
+            f"         For large databases, this operation may take SEVERAL HOURS to complete."
+        )
+        self.logger.warning(msg)
         
-        if self.has_incompatible_primary_key(table):
-             self.logger.error(f"Cannot partition {table}: Primary Key does not include 'clock' column.")
-             return
+        # Interactive Check
+        if sys.stdin.isatty():
+             print(f"\n{msg}")
+             if input("Do you have enough free space and is Zabbix stopped? [y/N]: ").lower().strip() != 'y':
+                 self.logger.error("Initialization aborted by user.")
+                 return False
 
-        # If already partitioned, skip
-        if self.get_existing_partitions(table):
-             self.logger.info(f"Table {table} is already partitioned.")
-             return
+        return True
 
-        start_dt = None
-        p_archive_ts = None
-
-        if fast_init:
-            self.logger.info(f"Strategy 'fast-init': Calculating start date from retention ({retention_str})")
-            retention_date = self.get_lookback_date(retention_str)
-            # Start granular partitions from the retention date
-            start_dt = self.truncate_date(retention_date, period)
-            # Create a catch-all for anything older
-            p_archive_ts = int(start_dt.timestamp())
-        else:
-            # Default 'db_min' strategy
-            self.logger.info("Strategy 'db_min': Querying table for minimum clock (may be slow)")
-            min_clock = self.get_table_min_clock(table)
-            
-            if not min_clock:
-                # Empty table. Start from NOW
-                start_dt = self.truncate_date(datetime.now(), period)
-            else:
-                 # Table has data. 
-                 start_dt = self.truncate_date(min_clock, period)
-        
-        # Build list of partitions from start_dt up to NOW + premake
+    def _generate_init_sql(self, table: str, period: str, start_dt: datetime, premake: int, p_archive_ts: int = None):
+        """Generate and execute ALTER TABLE command."""
         target_dt = self.get_next_date(self.truncate_date(datetime.now(), period), period, premake)
         
-        curr = start_dt
-        partitions_def = {}
-        
-        # If we have an archive partition, add it first
-        if p_archive_ts:
-             partitions_def['p_archive'] = str(p_archive_ts)
-
-        while curr < target_dt:
-            name = self.get_partition_name(curr, period)
-            desc = self.get_partition_description(curr, period)
-            partitions_def[name] = desc
-            curr = self.get_next_date(curr, period, 1)
-            
-        # Re-doing the loop to be cleaner on types
         parts_sql = []
         
-        # 1. Archive Partition
         if p_archive_ts:
              parts_sql.append(f"PARTITION p_archive VALUES LESS THAN ({p_archive_ts}) ENGINE = InnoDB")
         
-        # 2. Granular Partitions
-        # We need to iterate again from start_dt
         curr = start_dt
         while curr < target_dt:
             name = self.get_partition_name(curr, period)
-            desc_date_str = self.get_partition_description(curr, period) # Returns "YYYY-MM-DD HH:MM:SS"
+            desc_date_str = self.get_partition_description(curr, period)
             parts_sql.append(PARTITION_TEMPLATE % (name, desc_date_str))
             curr = self.get_next_date(curr, period, 1)
             
+        if not parts_sql:
+             self.logger.warning(f"No partitions generated for {table}")
+             return
+
         query = f"ALTER TABLE `{table}` PARTITION BY RANGE (`clock`) (\n" + ",\n".join(parts_sql) + "\n)"
         self.logger.info(f"Applying initial partitioning to {table} ({len(parts_sql)} partitions)")
         self.execute_query(query)
 
+    def _get_configured_tables(self) -> List[str]:
+        """Return a list of all tables configured for partitioning."""
+        tables_set = set()
+        partitions_conf = self.config.get('partitions', {})
+        for tables in partitions_conf.values():
+            if not tables: continue
+            for item in tables:
+                tables_set.add(list(item.keys())[0])
+        return list(tables_set)
+
+    def clean_housekeeper_table(self):
+        """
+        Clean up Zabbix housekeeper table during initialization.
+        Removes pending tasks ONLY for configured tables to prevent conflicts.
+        """
+        configured_tables = self._get_configured_tables()
+        if not configured_tables:
+            return
+
+        self.logger.info(f"Cleaning up 'housekeeper' table for: {', '.join(configured_tables)}")
+        
+        # Construct IN clause
+        placeholders = ', '.join(['%s'] * len(configured_tables))
+        query = f"DELETE FROM `housekeeper` WHERE `tablename` IN ({placeholders})"
+        self.execute_query(query, configured_tables)
+
+    def check_housekeeper_execution(self):
+        """
+        Check if Zabbix internal housekeeper is running for configured partitioned tables.
+        """
+        configured_tables = self._get_configured_tables()
+        if not configured_tables: 
+            return
+
+        query = "SELECT DISTINCT `tablename` FROM `housekeeper` WHERE `tablename` != 'events'"
+        rows = self.execute_query(query, fetch='all')
+        
+        if rows:
+            found_tables = {r[0] for r in rows}
+            configured_set = set(configured_tables)
+            conflicts = found_tables.intersection(configured_set)
+            
+            if conflicts:
+                self.logger.error(f"CRITICAL: Found pending housekeeper tasks for partitioned tables: {', '.join(conflicts)}")
+                self.logger.error("Please DISABLE Zabbix internal housekeeper for these tables in Administration -> General -> Housekeeping!")
+
+    def initialize_partitioning_fast(self, table: str, period: str, premake: int, retention_str: str):
+        """Fast Init: Use retention period to determine start date."""
+        self.logger.info(f"Initializing partitioning for {table} (Fast Mode)")
+        if not self._check_init_prerequisites(table): return
+        
+        self.logger.info(f"Strategy 'fast-init': Calculating start date from retention ({retention_str})")
+        retention_date = self.get_lookback_date(retention_str)
+        start_dt = self.truncate_date(retention_date, period)
+        p_archive_ts = int(start_dt.timestamp())
+        
+        self._generate_init_sql(table, period, start_dt, premake, p_archive_ts)
+
+    def initialize_partitioning_scan(self, table: str, period: str, premake: int):
+        """Scan Init: Scan table for minimum clock value."""
+        self.logger.info(f"Initializing partitioning for {table} (Scan Mode)")
+        if not self._check_init_prerequisites(table): return
+
+        self.logger.info("Strategy 'db_min': Querying table for minimum clock (may be slow)")
+        min_clock = self.get_table_min_clock(table)
+        
+        if not min_clock:
+            start_dt = self.truncate_date(datetime.now(), period)
+        else:
+             start_dt = self.truncate_date(min_clock, period)
+             
+        self._generate_init_sql(table, period, start_dt, premake)
+
     def discovery(self):
         """Output Zabbix Low-Level Discovery logic JSON."""
         partitions_conf = self.config.get('partitions', {})
@@ -554,32 +607,6 @@ class ZabbixPartitioner:
                 self.discovery()
                 return
 
-            # --- Check Mode ---
-            if mode == 'check':
-                if not target_table:
-                    # Check all and print simple status? Or error?
-                    # Zabbix usually queries one by one.
-                    # Implementing simple check which returns days for specific table
-                    raise ConfigurationError("Target table required for check mode")
-                
-                # Find period for table
-                found_period = None
-                for period, tables in partitions_conf.items():
-                    for item in tables:
-                        if list(item.keys())[0] == target_table:
-                            found_period = period
-                            break
-                    if found_period: break
-                
-                if not found_period:
-                     # Table not in config?
-                     print("-1") # Error code
-                     return
-
-                days_left = self.check_partitions_coverage(target_table, found_period)
-                print(days_left)
-                return
-
             # --- Stats Mode ---
             if mode == 'stats':
                 if not target_table:
@@ -593,6 +620,11 @@ class ZabbixPartitioner:
             self.check_compatibility()
             premake = self.config.get('premake', 10)
             
+            if mode == 'init':
+                self.clean_housekeeper_table()
+            else:
+                self.check_housekeeper_execution()
+            
             for period, tables in partitions_conf.items():
                 if not tables:
                     continue
@@ -601,12 +633,24 @@ class ZabbixPartitioner:
                      table = list(item.keys())[0]
                      retention = item[table]
                      
+                     if not self.validate_table_exists(table):
+                         continue
+                     
                      if mode == 'init':
-                         self.initialize_partitioning(table, period, premake, retention, fast_init=self.fast_init)
+                         try:
+                             if self.fast_init:
+                                 self.initialize_partitioning_fast(table, period, premake, retention)
+                             else:
+                                 self.initialize_partitioning_scan(table, period, premake)
+                         except ConfigurationError as e:
+                             raise ConfigurationError(f"Table '{table}': {e}")
                      else:
                          # Maintenance mode (Add new, remove old)
-                         self.create_future_partitions(table, period, premake)
-                         self.remove_old_partitions(table, retention)
+                         try:
+                             self.create_future_partitions(table, period, premake)
+                             self.remove_old_partitions(table, retention)
+                         except ConfigurationError as e:
+                             raise ConfigurationError(f"Table '{table}': {e}")
             
             # Housekeeping extras
             if mode != 'init' and not self.dry_run:
@@ -615,6 +659,31 @@ class ZabbixPartitioner:
             if mode != 'init' and not self.dry_run:
                 pass 
 
+def get_retention_input(prompt: str, default: str = None, allow_empty: bool = False) -> str:
+    """Helper to get and validate retention period input."""
+    while True:
+        val = input(prompt).strip()
+        
+        # Handle Empty Input
+        if not val:
+            if default:
+                return default
+            if allow_empty:
+                return ""
+            # If no default and not allow_empty, continue loop
+            continue
+            
+        # Handle Unit-less Input (Reject)
+        if val.isdigit():
+             print(f"Error: '{val}' is missing a unit. Please use 'd', 'w', 'm', or 'y' (e.g., {val}d).")
+             continue
+        
+        # Validate Format
+        if re.search(PART_PERIOD_REGEX, val):
+            return val
+            
+        print("Invalid format. Use format like 30d, 12w, 1y.")
+
 def run_wizard():
     print("Welcome to Zabbix Partitioning Wizard")
     print("-------------------------------------")
@@ -645,11 +714,26 @@ def run_wizard():
     config['database']['passwd'] = input("Database Password: ").strip()
     config['database']['db'] = input("Database Name [zabbix]: ").strip() or 'zabbix'
 
+    # 1.1 SSL
+    if input("Use SSL/TLS for connection? [y/N]: ").lower().strip() == 'y':
+         print("  Mode 1: Managed/Cloud DB (Use system CAs, e.g. Azure/AWS)")
+         print("  Mode 2: Custom Certificates (Provide ca, cert, key)")
+         
+         if input("  Use custom certificates? [y/N]: ").lower().strip() == 'y':
+             ssl_conf = {}
+             ssl_conf['ca'] = input("    CA Certificate Path: ").strip()
+             ssl_conf['cert'] = input("    Client Certificate Path: ").strip()
+             ssl_conf['key'] = input("    Client Key Path: ").strip()
+             # Filter empty
+             config['database']['ssl'] = {k: v for k, v in ssl_conf.items() if v}
+         else:
+             config['database']['ssl'] = 'required'
+
     # 2. Auditlog
     print("\n[Auditlog]")
     print("Note: To partition 'auditlog', ensure its Primary Key includes the 'clock' column.")
     if input("Partition 'auditlog' table? [y/N]: ").lower().strip() == 'y':
-        ret = input("Auditlog retention (e.g. 365d) [365d]: ").strip() or '365d'
+        ret = get_retention_input("Auditlog retention (e.g. 365d) [365d]: ", "365d")
         config['partitions']['weekly'].append({'auditlog': ret})
 
     # 3. History Tables
@@ -659,12 +743,12 @@ def run_wizard():
     print("\n[History Tables]")
     # Separate logic as requested
     if input("Set SAME retention for all history tables? [Y/n]: ").lower().strip() != 'n':
-        ret = input("Retention for all history tables (e.g. 30d) [30d]: ").strip() or '30d'
+        ret = get_retention_input("Retention for all history tables (e.g. 30d) [30d]: ", "30d")
         for t in history_tables:
             config['partitions']['daily'].append({t: ret})
     else:
         for t in history_tables:
-            ret = input(f"Retention for '{t}' (e.g. 30d, skip to ignore): ").strip()
+            ret = get_retention_input(f"Retention for '{t}' (e.g. 30d, skip to ignore): ", allow_empty=True)
             if ret:
                 config['partitions']['daily'].append({t: ret})
 
@@ -672,12 +756,12 @@ def run_wizard():
     trends_tables = ['trends', 'trends_uint']
     print("\n[Trends Tables]")
     if input("Set SAME retention for all trends tables? [Y/n]: ").lower().strip() != 'n':
-        ret = input("Retention for all trends tables (e.g. 365d) [365d]: ").strip() or '365d'
+        ret = get_retention_input("Retention for all trends tables (e.g. 365d) [365d]: ", "365d")
         for t in trends_tables:
             config['partitions']['monthly'].append({t: ret})
     else:
         for t in trends_tables:
-            ret = input(f"Retention for '{t}' (e.g. 365d, skip to ignore): ").strip()
+            ret = get_retention_input(f"Retention for '{t}' (e.g. 365d, skip to ignore): ", allow_empty=True)
             if ret:
                 config['partitions']['monthly'].append({t: ret})
 
@@ -731,22 +815,43 @@ def setup_logging(config_log_type: str, verbose: bool = False):
     logger.addHandler(handler)
 
 def parse_args():
-    parser = argparse.ArgumentParser(description='Zabbix Partitioning Manager')
-    parser.add_argument('-c', '--config', default='/etc/zabbix/zabbix_partitioning.conf', help='Config file path')
-    parser.add_argument('-i', '--init', action='store_true', help='Initialize partitions')
-    parser.add_argument('-r', '--dry-run', action='store_true', help='Simulate queries')
-    parser.add_argument('-v', '--verbose', action='store_true', help='Enable debug logging')
+    parser = argparse.ArgumentParser(
+        description='Zabbix Database Partitioning Script',
+        epilog='''
+Examples:
+  # 1. Interactive Configuration (Initial config file creation)
+  %(prog)s --wizard
+
+  # 2. Initialization (First Run)
+  #    A. Standard (Scans DB for oldest record - Recommended):
+  %(prog)s --init
+  
+  #    B. Fast (Start from retention period - Best for large DBs):
+  %(prog)s --fast-init
+
+  # 3. Regular Maintenance (Cron/Systemd)
+  #    Creates future partitions and drops old ones.
+  %(prog)s
+
+  # 4. Monitoring (Zabbix Integration)
+  #    Discovery (LLD): %(prog)s --discovery
+  #    Statistics (JSON): %(prog)s --stats history
+''',
+        formatter_class=argparse.RawDescriptionHelpFormatter
+    )
+    parser.add_argument('--config','-c', default='/etc/zabbix/zabbix_partitioning.conf', help='Path to configuration file')
     
-    # Monitoring args
-    parser.add_argument('--discovery', action='store_true', help='Output Zabbix LLD JSON')
-    parser.add_argument('--check-days', type=str, help='Check days of future partitions left for table', metavar='TABLE')
-    parser.add_argument('--stats', type=str, help='Output detailed table statistics in JSON', metavar='TABLE')
-    
-    # Wizard & Flags
-    parser.add_argument('--wizard', action='store_true', help='Launch interactive configuration wizard')
-    parser.add_argument('--fast-init', action='store_true', help='Skip MIN(clock) check during init, start from retention')
-    
-    parser.add_argument('-V', '--version', action='version', version=f'%(prog)s {VERSION}', help='Show version and exit')
+    # Mutually Exclusive Actions
+    group = parser.add_mutually_exclusive_group()
+    group.add_argument('--init', '-i', action='store_true', help='Initialize partitions (Standard: Scans DB for oldest record)')
+    group.add_argument('--fast-init', '-f', action='store_true', help='Initialize partitions (Fast: Starts FROM retention period, skips scan)')
+    group.add_argument('--discovery', '-d', action='store_true', help='Output Zabbix Low-Level Discovery (LLD) JSON')
+    group.add_argument('--stats', '-s', type=str, help='Output table statistics (Size, Count, Usage) in JSON', metavar='TABLE')
+    group.add_argument('--wizard', '-w', action='store_true', help='Launch interactive configuration wizard')
+
+    parser.add_argument('--version', '-V', action='version', version=f'%(prog)s {VERSION}', help='Show version and exit')
+    parser.add_argument('--verbose', '-vv', action='store_true', help='Enable debug logging')
+    parser.add_argument('--dry-run', '-r', action='store_true', help='Simulate queries without executing them')
     
     return parser.parse_args()
 
@@ -781,16 +886,16 @@ def main():
             config['logging'] = 'console' # Force console for discovery? Or suppress?
             # actually we don't want logs mixing with JSON output
             # so checking mode before setup logging
-        elif args.check_days:
-            mode = 'check'
-            target = args.check_days
         elif args.stats:
             mode = 'stats'
             target = args.stats
-        elif args.init: mode = 'init'
+        elif args.init: 
+            mode = 'init'
+        elif args.fast_init:
+            mode = 'init'
         
         # Setup logging
-        if mode in ['discovery', 'check', 'stats']:
+        if mode in ['discovery', 'stats']:
              logging.basicConfig(level=logging.ERROR) # Only show critical errors
         else:
              setup_logging(config.get('logging', 'console'), verbose=args.verbose)