Diagnosing SQLite‑Based etcd in K3s Clusters: A Step‑by‑Step Diagnostic Guide
When a K3s cluster loses API access after a node restart, the embedded SQLite etcd datastore is often the hidden cause.
Loading…
ReadMeFeed / Community knowledge
#etcd
Real questions. Useful conversations. Find the people who know your stack.
k3s
kubernetesK3s Embedded etcd vs External etcd: An HA Decision Guide
Decide when to keep K3s embedded etcd and when to move to a dedicated external etcd cluster for control-plane high availability.
Troubleshooting K3s HA Control-Plane Membership and etcd Failures
A diagnostic guide for resolving K3s HA control-plane join failures, etcd quorum issues, and raft membership errors in versions v1.28–v1.30.
Building a Minimal High‑Availability k3OS Cluster with Built‑In etcd
Deploy a minimal, highly available k3OS cluster using its built‑in etcd. Learn the exact install flags, trust boundaries, operational checks, and failure‑mode mitigations for a 3‑node HA design.
Choosing the Right Datastore for K3s: SQLite, etcd, or External SQL
Guide to choosing between SQLite, etcd, and external SQL for K3s. Compare quorum requirements, failure domains, and implementation steps for high-availability state management.
Diagnosing k3s HA Failures with External etcd: Connectivity, TLS, and Quorum Issues
When a k3s HA cluster with an external etcd fails to start, the logs typically show connection errors and the API server pods crash. This guide walks through a quick diagnosis – from endpoint reachability to TLS validation – and outlines fixes and when to seek help.
Gardener Shoot Control-Plane HA: What `failureTolerance: zone` Changes in the Seed
Enabling high availability for a Gardener shoot changes replica counts and pod topology in the seed, not worker nodes. Here is what the etcd quorum trade-off means and how to verify placement.
gardenerChoosing Between SQLite and etcd for K3s Cluster Storage
Learn how to choose between SQLite and embedded etcd for K3s clusters, including implementation steps for edge devices and high-availability production environments.
K3s SQLite Datastore: When the Lightweight Default Becomes a Bottleneck
Embedded SQLite makes k3s ultra‑lightweight, but write‑heavy workloads and shared storage can hit concurrency limits. Here’s how to evaluate the trade‑off and migrate to external etcd if needed.