Central Controller Password Update for Composable Systems
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Solution Overview
Problem
In composable systems, updating passwords for all devices during deployment is challenging due to devices being offline or unavailable, leading to security vulnerabilities from devices with default or insecure passwords.
Innovation Solution
A central controller requests device information from vendors, checks the number of discovered devices against the expected number, and only updates passwords for all devices once all expected devices are online, halting deployment if any devices are missing to ensure all receive the updated password.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If password update is performed during deployment, then security is improved, but deployment may be interrupted due to devices being offline
Solution Approach 1:
The system performs device discovery and availability checking before executing the password update operation. The central controller identifies all devices in the composable system, verifies their online status, and confirms accessibility before initiating the security update, ensuring that the password change can be successfully applied to all devices without interruption.
Solution Approach 2:
The system implements a feedback mechanism where the central controller continuously monitors device availability during the deployment process. If a device is found to be offline or unavailable, the system receives feedback about this status and adjusts its password update strategy accordingly, either by waiting for device availability or by updating passwords in stages as devices come online.
2Reliability
If password update is performed immediately, then security is improved, but devices that are offline will be left with default passwords creating vulnerabilities
Solution Approach 1:
The system performs comprehensive device discovery and availability verification before executing password updates. The central controller identifies all expected devices in the composable system and checks their online status, ensuring that password updates are only applied to devices that are currently accessible, thereby preventing any device from being left with default passwords.
Solution Approach 2:
The system employs a dynamic password update approach where the update process adapts to the real-time availability of devices. If some devices are offline, the system updates passwords for available devices and schedules updates for offline devices to be performed when they come online, ensuring eventual coverage of all devices without leaving security gaps.
3Reliability
If deployment is halted to ensure all devices are discovered, then security is improved, but deployment time increases
Solution Approach 1:
The system performs device discovery and availability checking as a preliminary step before password updates, but this is integrated into the existing deployment workflow rather than being a separate halting phase. The central controller discovers devices and checks their status during the natural progression of deployment, minimizing additional time overhead while ensuring security requirements are met.
Solution Approach 2:
The system maintains continuous deployment operations by performing password updates as devices become available rather than halting the entire deployment process. The central controller continues to discover and update devices in real-time as they come online, keeping the deployment workflow moving forward while still ensuring all devices receive security updates.
Data Source
AI summary
Secure updating of strong passwords in a composable system, includes: during deployment of the composable system, requesting, by a central controller in the composable system, device information from a device vendor, the device information specifying a number of expected devices for the composable system; checking, by the central controller, a number of discovered devices against the number of expected devices; only upon discovering all the expected devices, updating, by the central controller, a password for all the devices in the composable system; and upon discovering fewer than the total number of expected devices, halting, by the central controller, deployment of the composable system.