VM Lifecycle¶
The VM lifecycle describes the various states an Azure VM can transition through, each with distinct billing and resource implications.
Power States and Billing¶
Understanding the difference between "Stopped" and "Deallocated" is crucial for cost management.
| State | Billing (Compute) | IP Address Retention | Disk Retention |
|---|---|---|---|
| Starting/Running | Yes | Yes (Dynamic/Static) | Yes |
| Stopped | Yes | Yes (Dynamic/Static) | Yes |
| Stopped (Deallocated) | No | Private IP retained; dynamic public IP released; static public IP retained | Yes |
| Deleting | No | No | Depends (Delete with VM) |
State Transitions¶
stateDiagram-v2
[*] --> Creating
Creating --> Running
Running --> Stopping
Stopping --> Stopped
Stopped --> Deallocating
Deallocating --> Deallocated
Deallocated --> Starting
Starting --> Running
Running --> Deleting
Deleting --> [*]Management Operations¶
Common maintenance and recovery operations for Azure Virtual Machines.
| Operation | Description | Use Case |
|---|---|---|
| Redeploy | Moves VM to a new host | Hardware-related failures |
| Reimage | Reinstalls the OS disk | Corrupted OS or configuration reset |
| Restart | Reboots the Guest OS | Software updates or configuration changes |