Provisioning & Lifecycle.

1. Instance Management:
   • Automated Linode instance creation from public OS images.
2. Lifecycle Operations:
   • Suspend, Unsuspend, Terminate, Reboot, and Shutdown operations.
3. Password & Rebuild:
   • Root password change support and server rebuild from the admin panel.

Admin Configuration.

1. Product Configuration:
   • Per-product configuration for OS, region, plan, and backups.
2. Configurable Options:
   • Auto-generated WHMCS configurable options for OS, Location, Plan, and Backups.
   • Configurable option overrides for client-selected values at order time.
3. Client Area Control:
   • Toggle client area tab visibility per product.
4. Resource Limits:
   • Set resource limits per product for volumes, snapshots, and NodeBalancers.
5. API Testing:
   • API connection test from server settings for easy setup.

Client Area Management Tabs.

1. Overview:
   • Server status, specs, IPs, and quick actions.
2. Snapshots:
   • Create and manage manual snapshots.
3. Backups:
   • View automatic backups and restore from backup.
4. IP Addresses:
   • View IPv4/IPv6, update reverse DNS, assign/share IPs.
5. Disks:
   • Create, resize, clone, delete disks; reset disk passwords.
6. Images:
   • Create images from disks, upload, replicate, and delete.
7. SSH Keys:
   • Add, update, and delete SSH public keys.
8. Configurations:
   • View Linode kernel and boot configurations.
9. Volumes:
   • Attach and manage block storage volumes.
10. NodeBalancers:
    • Create, configure, and manage load balancers.
11. History:
    • View event history for the Linode instance.
12. Graph:
    • CPU, network, and disk I/O performance charts with transfer stats.

Automation & Integration.

1. Custom Fields:
   • Auto-creation of LinodeId and SSHKey custom fields per product.
2. Database Management:
   • Auto-creation of required database tables on product/server save.
3. Live API Data:
   • Configurable options auto-populate with live API data (OS images, regions, plan types).
4. Sync Hook:
   • AdminServiceEdit hook syncs configurable option values to creation fields.
5. License Validation:
   • License validation via WHMPress licensing server.

Security.

1. API Authentication:
   • API token-based authentication stored in the WHMCS server Access Hash.
2. Audit Trail:
   • All API calls logged via WHMCS logModuleCall for full audit trail.
3. Error Handling:
   • Input validation and error handling on all operations.