Kosta Mushkin
331 lines
12 KiB
Python
331 lines
12 KiB
Python
#!/usr/bin/env python3
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"""
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Exercise 5: VPG Operations - Beginner-Friendly Instructions
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This script demonstrates how to create and configure VPGs in your Zerto environment.
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PREREQUISITES (Complete these first):
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1. ✅ Completed Exercise 4 (Resource Discovery)
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2. ✅ Make sure you have the zvml package installed
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3. ✅ Updated prerequisites/config.py with your ZVM details
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4. ✅ Have some unprotected VMs available in your local site
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WHAT YOU NEED TO DO:
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In this exercise, you will:
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1. Create a ZVMLClient to connect to your ZVM
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2. Parse command line arguments (VM names and VPG name)
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3. Find VMs by their names in your local site
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4. Get peer site resources (datastores, folders, networks, hosts)
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5. Create a VPG configuration with all necessary settings
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6. Create the VPG
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7. Add VMs to the VPG
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8. Optionally remove a VM from the VPG
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STEP-BY-STEP INSTRUCTIONS:
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1. Look at the TODO comments below - they tell you exactly what to do
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2. Replace the placeholder code with the actual code
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3. Each step has hints and examples to help you
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4. If you get stuck, check the solution file in the solution/ directory
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WHAT IS A VPG?
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- **VPG** = Virtual Protection Group
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- It's a group of VMs that are protected together
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- All VMs in a VPG have the same protection settings
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- You can replicate VMs from one site to another using VPGs
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USAGE EXAMPLE:
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python create_vpg.py --vm-names "vm1" "vm2" "vm3" --vpg-name "My-VPG"
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"""
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import sys
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import os
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import logging
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import json
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import argparse
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from pathlib import Path
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import urllib3
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# Suppress SSL warnings
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urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
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# Add prerequisites to Python path (this helps Python find your config file)
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prerequisites_path = Path(__file__).parent.parent.parent.parent / "prerequisites"
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sys.path.append(str(prerequisites_path))
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# Import the Zerto SDK - this gives us the ZVMLClient class
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from zvml import ZVMLClient
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# Import your configuration settings
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try:
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from config import (
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ZVM_HOST, # Your ZVM IP address (e.g., "192.168.1.100")
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ZVM_PORT, # Usually 443 for HTTPS
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ZVM_SSL_VERIFY, # True/False for SSL certificate verification
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CLIENT_ID, # Your Keycloak client ID (e.g., "my-api-client")
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CLIENT_SECRET # Your Keycloak client secret
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)
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except ImportError:
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print("❌ ERROR: Configuration file not found!")
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print("Please copy config.example.py to config.py and update with your values")
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print("Expected path:", prerequisites_path / "config.py")
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sys.exit(1)
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def parse_arguments():
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"""
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Parse command line arguments.
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TODO: Implement argument parsing
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HINT: Use this syntax:
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parser = argparse.ArgumentParser(description='Create VPG and add specified VMs')
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parser.add_argument('--vm-names', nargs='+', required=True,
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help='List of VM names to add to the VPG')
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parser.add_argument('--vpg-name', default="Test-VPG-Python",
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help='Name of the VPG to create (default: Test-VPG-Python)')
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return parser.parse_args()
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EXPLANATION:
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- argparse helps you get command line arguments
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- --vm-names: List of VM names (required)
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- --vpg-name: Name for the VPG (optional, has default)
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"""
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pass # ← REPLACE WITH YOUR CODE
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def find_vms_by_names(client, site_identifier, vm_names):
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"""
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Find VMs by their names in the specified site.
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TODO: Implement the function to:
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1. Get all VMs from the site using client.virtualization_sites.get_virtualization_site_vms()
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2. Create a dictionary for easy lookup: {vm.get('VmName'): vm for vm in vms}
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3. Find requested VMs and return found/not found lists
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HINT: Use this syntax:
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vms = client.virtualization_sites.get_virtualization_site_vms(site_identifier=site_identifier)
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vm_dict = {vm.get('VmName'): vm for vm in vms}
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found_vms = []
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not_found = []
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for vm_name in vm_names:
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if vm_name in vm_dict:
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found_vms.append(vm_dict[vm_name])
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else:
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not_found.append(vm_name)
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return found_vms, not_found
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"""
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pass # ← REPLACE WITH YOUR CODE
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def remove_vm_from_vpg(client, vpg_name, vm):
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"""
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Remove a VM from the VPG.
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TODO: Implement the function to:
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1. Get VM name from vm object
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2. Call client.vpgs.remove_vm_from_vpg() to remove the VM
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HINT: Use this syntax:
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vm_name = vm.get('VmName')
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client.vpgs.remove_vm_from_vpg(vpg_name=vpg_name, vm_name=vm_name)
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"""
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pass # ← REPLACE WITH YOUR CODE
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def main():
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"""
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Main function - this is where your code goes!
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Follow the step-by-step instructions below.
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"""
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# Set up logging so you can see what's happening
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logging.basicConfig(
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level=logging.INFO,
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format='%(asctime)s - %(levelname)s - %(message)s'
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)
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print("🚀 Starting Zerto VPG Operations Exercise")
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print("=" * 50)
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try:
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# ========================================
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# STEP 1: Parse command line arguments
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# ========================================
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print("\n📝 STEP 1: Parsing command line arguments...")
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print("You need to call the parse_arguments() function you created above.")
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# TODO: Add code to parse arguments
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# HINT: Use this syntax:
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# args = parse_arguments()
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#
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# EXPLANATION:
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# This gets the VM names and VPG name from command line
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 2: Create ZVMLClient instance
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# ========================================
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print("\n📝 STEP 2: Creating ZVMLClient...")
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print("This is the same as previous exercises.")
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# TODO: Add code to create ZVMLClient
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# HINT: Use this syntax:
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# client = ZVMLClient(
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# zvm_address=ZVM_HOST,
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# client_id=CLIENT_ID,
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# client_secret=CLIENT_SECRET,
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# verify_certificate=ZVM_SSL_VERIFY
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# )
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 3: Identify local and peer sites
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# ========================================
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print("\n📝 STEP 3: Getting site information...")
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print("You need to get local and peer site identifiers.")
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# TODO: Add code to get sites and site identifiers
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# HINT: Use this syntax:
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# sites = client.virtualization_sites.get_virtualization_sites()
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# local_site = client.localsite.get_local_site()
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# local_site_identifier = local_site.get('SiteIdentifier')
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# peer_site = next((site for site in sites if site.get('SiteIdentifier') != local_site_identifier), None)
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# peer_site_identifier = peer_site.get('SiteIdentifier')
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 4: Get peer site resources
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# ========================================
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print("\n📝 STEP 4: Getting peer site resources...")
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print("You need to get datastores, folders, networks, and hosts from the peer site.")
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# TODO: Add code to get peer site resources
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# HINT: Use this syntax:
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# peer_datastores = client.virtualization_sites.get_virtualization_site_datastores(site_identifier=peer_site_identifier)
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# target_datastore = peer_datastores[0] # Use first available
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#
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# peer_folders = client.virtualization_sites.get_virtualization_site_folders(site_identifier=peer_site_identifier)
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# target_folder = peer_folders[0] # Use first available
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#
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# peer_networks = client.virtualization_sites.get_virtualization_site_networks(site_identifier=peer_site_identifier)
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# target_network = peer_networks[0] # Use first available
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#
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# peer_hosts = client.virtualization_sites.get_virtualization_site_hosts(site_identifier=peer_site_identifier)
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# target_host = peer_hosts[0] # Use first available
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 5: Create VPG configuration
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# ========================================
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print("\n📝 STEP 5: Creating VPG configuration...")
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print("You need to create the basic, journal, recovery, and network settings.")
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# TODO: Add code to create VPG configuration
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# HINT: Use this syntax:
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# basic = {
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# "Name": args.vpg_name,
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# "VpgType": "Remote",
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# "RpoInSeconds": 300,
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# "JournalHistoryInHours": 24,
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# "Priority": "Medium",
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# "UseWanCompression": True,
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# "ProtectedSiteIdentifier": local_site_identifier,
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# "RecoverySiteIdentifier": peer_site_identifier
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# }
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#
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# journal = {} # Keep default settings
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#
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# recovery = {
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# "DefaultHostIdentifier": target_host.get('HostIdentifier'),
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# "DefaultDatastoreIdentifier": target_datastore.get('DatastoreIdentifier'),
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# "DefaultFolderIdentifier": target_folder.get('FolderIdentifier')
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# }
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#
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# networks = {
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# "Failover": {
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# "Hypervisor": {
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# "DefaultNetworkIdentifier": target_network.get('NetworkIdentifier')
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# }
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# },
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# "FailoverTest": {
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# "Hypervisor": {
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# "DefaultNetworkIdentifier": target_network.get('NetworkIdentifier')
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# }
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# }
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# }
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 6: Create VPG
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# ========================================
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print("\n📝 STEP 6: Creating the VPG...")
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print("You need to call the create_vpg method with your configuration.")
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# TODO: Add code to create VPG
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# HINT: Use this syntax:
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# vpg_id = client.vpgs.create_vpg(basic=basic, journal=journal, recovery=recovery, networks=networks, sync=True)
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#
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# EXPLANATION:
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# This creates the VPG with all your settings
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 7: Find and add VMs to VPG
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# ========================================
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print("\n📝 STEP 7: Finding and adding VMs...")
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print("You need to find the VMs and add them to the VPG.")
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# TODO: Add code to find VMs
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# HINT: Use this syntax:
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# found_vms, not_found = find_vms_by_names(client, local_site_identifier, args.vm_names)
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#
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# EXPLANATION:
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# This finds the VMs you specified in the command line
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# ← ADD YOUR CODE HERE
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# TODO: Add code to add VMs to VPG
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# HINT: Use this syntax:
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# for vm in found_vms:
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# vm_name = vm.get('VmName')
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# vm_id = vm.get('VmIdentifier')
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# vm_payload = {
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# "VmIdentifier": vm_id,
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# "Recovery": {
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# "HostIdentifier": target_host.get('HostIdentifier'),
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# "DatastoreIdentifier": target_datastore.get('DatastoreIdentifier'),
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# "FolderIdentifier": target_folder.get('FolderIdentifier')
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# }
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# }
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# task_id = client.vpgs.add_vm_to_vpg(args.vpg_name, vm_list_payload=vm_payload)
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# ← ADD YOUR CODE HERE
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# ========================================
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# STEP 8: Interactive VM removal (optional)
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# ========================================
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print("\n📝 STEP 8: Interactive VM removal...")
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print("You can optionally remove the last VM from the VPG.")
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# TODO: Add code for interactive VM removal
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# HINT: Use this syntax:
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# if found_vms:
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# last_vm = found_vms[-1]
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# vm_name = last_vm.get('VmName')
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# response = input(f"Remove VM {vm_name} from VPG? (yes/no): ").lower()
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# if response in ['yes', 'y']:
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# remove_vm_from_vpg(client, args.vpg_name, last_vm)
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# ← ADD YOUR CODE HERE
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except Exception as e:
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# This catches any errors that might occur
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print(f"\n❌ ERROR: Something went wrong!")
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print(f"Error details: {str(e)}")
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logging.error(f"VPG operation failed: {str(e)}")
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sys.exit(1)
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if __name__ == "__main__":
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main() |