Remove Web Application Proxy Server From — Cluster

I waited ten minutes. Then twenty.

As I prepared to shut down the virtual machine, I decided to tail the legacy logs one last time. tail -f /var/log/wap/traffic.log on wap-03 . remove web application proxy server from cluster

No alerts. No 500 errors. No angry emails from the night shift fraud team. I waited ten minutes

The business didn't see 0.5%. They saw "99.95% uptime." But I saw the angry tweets. I saw the support tickets: "Card declined. Please try again." Those weren't bank declines. Those were wap-03 swallowing the requests whole. tail -f /var/log/wap/traffic

Instantly, the average response time for the payment API dropped from 340ms to 190ms. A 44% improvement. The error rate fell to 0.001%.

The remaining two WAPs ( wap-01 and wap-02 ) recalculated their session tables. CPU usage on wap-01 jumped from 18% to 32%. Well within limits. Memory stable. Error rate on the payment API… held steady at 0.01% (baseline noise).

At 2:17 AM, I drained the traffic. The F5 showed wap-03 's connection count dropping from 1,200 to 0. Beautiful.