This article explains how Kubernetes rolling deployments affect pod lifecycle, detailing the startup and shutdown phases, the impact of readiness probes and endpoint updates, and how to prevent connection interruptions by using preStop hooks and proper configuration for zero‑downtime deployments.
This article analyzes why Kubernetes rolling updates can still cause service interruptions during pod startup and termination, explains the underlying mechanisms of Kubelet and Endpoint Controller, and provides practical steps such as readiness probes and preStop hooks to achieve smoother, near‑zero‑downtime deployments.
Deleting a pod triggers endpoint removal, but various components like kube-proxy, CoreDNS, and ingress controllers may still route traffic until the endpoint fully propagates, so you must wait or use preStop hooks to delay deletion and handle SIGTERM gracefully within the configurable shutdown period.
This article examines why traffic loss occurs during Kubernetes application releases, breaks down the three main traffic paths—LoadBalancer Service, Nginx Ingress, and microservice registry—and offers concrete, cloud‑native configurations and lifecycle hooks to achieve loss‑free deployments.
This article explains why a typical Deployment + LoadBalancer setup can experience downtime during updates, analyzes the pod lifecycle, endpoint synchronization, iptables/ipvs and SLB interactions, and provides concrete configuration steps—including readiness probes, preStop hooks, and Service traffic policies—to achieve zero‑downtime deployments.
