Script anti_ddos_challenge.lua fails health check leading to crashing nginx-ingress-controller pods

[nikhilbabaria07]

Script anti_ddos_challenge.lua fails health check leading to crashing nginx-ingress-controller pods

Issue Description

I mounted the script to the nginx-ingress-controller pod and added the external lua script based on the installation steps mentioned in the doc. But unfortunately, pods are crashing leaving below error:

	/tmp/anti_ddos_challenge.lua:2525: in main chunk, client: unix:, server: , request: "GET /is-dynamic-lb-initialized HTTP/1.1", host: "nginx-status"
2021/05/27 10:56:33 [warn] 599#599: *410 [lua] _G write guard:12: __newindex(): writing a global lua variable ('set_cookies') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
stack traceback:
	/tmp/anti_ddos_challenge.lua:3292: in main chunk, client: unix:, server: , request: "GET /is-dynamic-lb-initialized HTTP/1.1", host: "nginx-status"
E0527 10:56:33.857930       6 checker.go:57] healthcheck error: 503
---g82GBbwu---A--

Versions:

• Browser(s): N/A
• Nginx version: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.24.1

[nikhilbabaria07]

Following up to check if anyone has a solution for the problem I am facing.