Why Does a Kubernetes Deployment Keep Creating Pods That Never Become Ready?

A Deployment can continuously replace pods that start but never pass readiness checks. The underlying issue may be an incorrect health endpoint, slow initialization, unavailable dependency, probe timing, or a service that listens on a different port.

What to check

Review pod events, container logs, readiness and startup probe configuration, actual listener address and port, dependency health, and rollout history. Compare probe timing with observed initialization and inspect whether all replicas fail in the same way.

Recommended next step

Correct the health contract and dependency assumptions, then roll out gradually and monitor readiness and user-facing requests. Avoid simply removing probes because they help prevent unhealthy pods from receiving traffic.

How Informatix Systems can help

Informatix Systems provides Kubernetes and container platform engineering. We can review the affected systems and workflow, help narrow down the cause, and outline a practical implementation path. Contact us with the platform involved, when the issue began, and non-sensitive error details.