Kubernetes Is Retiring Its Popular Ingress NGINX Controller

During last month's KubeCon North America in Atlanta, Kubernetes maintainers announced the upcoming retirement of Ingress NGINX. 'Best-effort maintenance will continue until March 2026,' noted the Kubernetes SIG Network and the Security Response Committee. 'Afterward, there will be no further releases, no bugfixes, and no updates to resolve any security vulnerabilities that may be discovered.' In a recent op-ed for The Register, Steven J. Vaughan-Nichols reflects on the decision and speculates about what might have prevented this outcome: Ingress NGINX, for those who don't know it, is an ingress controller in Kubernetes clusters that manages and routes external HTTP and HTTPS traffic to the cluster's internal services based on configurable Ingress rules. It acts as a reverse proxy, ensuring that requests from clients outside the cluster are forwarded to the correct backend services within the cluster according to path, domain, and TLS configuration. As such, it's vital for network traffic management and load balancing. You know, the important stuff.

Now this longstanding project, once celebrated for its flexibility and breadth of features, will soon be 'abandonware.' So what? After all, it won't be the first time a once-popular program shuffled off the stage. Off the top of my head, dBase, Lotus 1-2-3, and VisiCalc spring to my mind. What's different is that there are still thousands of Ingress NGINX controllers in use. Why is it being put down, then, if it's so popular? Well, there is a good reason. As Tabitha Sable, a staff engineer at Datadog who is also co-chair of the Kubernetes special interest group for security, pointed out: 'Ingress NGINX has always struggled with insufficient or barely sufficient maintainership. For years, the project has had only one or two people doing development work, on their own time, after work hours, and on weekends. Last year, the Ingress NGINX maintainers announced their plans to wind down Ingress NGINX and develop a replacement controller together with the Gateway API community. Unfortunately, even that announcement failed to generate additional interest in helping maintain Ingress NGINX or develop InGate to replace it.'

The final nail in the coffin was when security company Wix found a killer Ingress NGINX security hole. How bad was it? Wix declared: 'Exploiting this flaw allows an attacker to execute arbitrary code and access all cluster secrets across namespaces, which could lead to complete cluster takeover.' You see, the real problem isn't that Ingress NGINX has a major security problem. Heck, hardly a month goes by without another stop-the-presses Windows bug being uncovered. No, the real issue is that here we have yet another example of a mission-critical open source program no one pays to support...

Read more of this story at Slashdot.