F5 BIG-IP Administration Support and Troubleshooting (F5CAB5) exam F5CAB5 Question # 19 Topic 2 Discussion
F5CAB5 Exam Topic 2 Question 19 Discussion:
Question #: 19
Topic #: 2
A pool member is exhibiting frequent up-and-down state changes, leading the BIG-IP Administrator to suspect a health monitor issue. Which specific log file should the BIG-IP Administrator review to diagnose the problem?
The Local Traffic Manager (LTM) log file is the primary repository for all events related to load balancing objects, including virtual servers, pools, and nodes.
Monitor Logging: When a health monitor marks a pool member as "UP" or "DOWN," the system generates a log entry in /var/log/ltm.
Diagnosing Flaps: To troubleshoot "flapping" (frequent state changes), an administrator would look for messages like 01010028:3: Pool /Common/http_pool member /Common/10.10.1.1:80 monitor status down followed quickly by an "up" status. This log provides the timestamp and the specific monitor that triggered the state change.
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