Complete procedures with a way back.

Deploy a pinned vLLM release behind a trusted TLS and authentication proxy, size GPU and KV-cache capacity from real workloads, isolate artifacts and listeners, verify quality and overload behavior, monitor the engine, and rehearse complete-bundle rollback.

Pin Helm and chart inputs, separate secrets from values and release history, render and server-validate manifests, stage upgrades with bounded waits, verify application behavior, roll back only across compatible data, and operate hooks, CRDs, drift, and secret rotation.

Upgrade a kubeadm-managed Kubernetes 1.35 cluster to an exact 1.36 patch one control plane and worker at a time, preserving quorum, application availability, backups, and recovery evidence.

Install pinned Argo CD 3.4.5, constrain an AppProject, verify repository transport and GnuPG-signed commits or tags, preview manual syncs, sequence waves and hooks, harden revision overrides, rehearse rollback, rotate keys, and plan the separate 3.5 sourceIntegrity migration.