A system administrator updates a cluster of web servers with an emergency software patch. Immediately after the update, users report that web applications hosted on those servers are failing to load. Which of the following actions should the administrator take FIRST to restore system functionality?
- Execute the documented rollback plan to revert the servers to their known good baseline configuration.Answer
- BDeploy network firewall rules to block incoming web traffic to the affected servers.
- CReclassify the web server security policy from a preventive control to a detective control.
- DRun an automated vulnerability scan against the web servers to detect open network ports.
Answer
Execute the documented rollback plan to revert the servers to their known good baseline configuration.
When a patch causes unexpected service outage or instability in production, the immediate action within configuration management is to execute a tested rollback plan to restore services to the last known good baseline.
Step-by-Step Solution
Key Concept
Rollback Planning and Configuration Baselines