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Step‑by‑step diagnostic guide for troubleshooting Gardener Shoot API server unavailability, covering etcd quorum, pod resources, network policies, node taints, and cloud load balancer checks.
Learn how to implement K3s High Availability using embedded etcd to eliminate control plane single points of failure and ensure cluster resilience.
Learn how to configure the Rancher Backup Operator to automate etcd snapshots to S3-compatible storage and recover cluster state during a disaster.
When implementing custom controllers in Kubernetes (v1.28+), ensuring that retried write operations do not result in duplicate resources or overwritten data is critical. The API server utilizes optimistic concurrency control via the resourceVersion field to prevent conflicting updates during PUT requests. While resourceVersion manages updates, the behavior f
Goal Determine the optimal data‑store strategy for a low‑resource edge node that must balance minimal configuration with resilience to data corruption. Constraints k3s offers two documented modes: embedded SQLite (default) and external etcd. SQLite stores all API objects in a single local file (k3s.db) and the process terminates if the file becomes corrupted
gardener
kubernetes
k3s
rancher
sqlite