Using K3s’ Helm Controller to Deploy Charts via CRDs
Learn how K3s’ Helm Controller lets you declare Helm charts as Kubernetes resources, how to verify its operation, and what trade‑offs to consider for edge workloads.
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helmWhat k3OS Got Right About Immutable Infrastructure: A Look Back at config.yaml
k3OS is archived, but its one-file config.yaml model — where hostname, SSH keys, and Kubernetes cluster membership are all declared at boot — is still a design worth stealing for edge and lab clusters.
k3osK3s’ Embedded SQLite: When the Default Data Store Is Enough—and When It Isn’t
K3s ships with an embedded SQLite database that removes the need for an external etcd, but the single‑writer lock and lack of replication limit its use to single‑node or low‑write workloads.
kubernetes
sqlitek3OS's Declarative Config Was the Real Product — and Why It's Now a Design Study, Not a Platform
k3OS is archived, but its headline decision — an entire node defined by one versioned config.yaml — is still the right way to think about provisioning edge Kubernetes fleets.
Run a Highly Available K3s Control Plane with the Embedded SQLite Datastore
Step‑by‑step guide to deploying a highly available K3s control plane using the built‑in SQLite (sqlitedb) datastore, covering bootstrap, verification, failure recovery, and migration to etcd.
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.
Diagnosing k3OS Boot Failures Due to k3os-config Issues
Step‑by‑step guide to diagnose why a k3OS node boots but k3s fails to start, focusing on k3os-config validation and immutable filesystem checks.
Diagnosing Persistent Volume Claim Failures in k3s with Local‑Path Provisioner
When a k3s pod’s PVC stays in Pending, the culprit is often the local‑path provisioner. This guide walks through checking provisioner health, node disk space, stale PVs, and StorageClass config, with fixes tied to findings and escalation steps.
Managing Cluster State with the K3s Embedded SQLite Datastore
Learn how K3s uses an embedded SQLite database to replace etcd in single-node clusters, reducing resource overhead while maintaining full Kubernetes API functionality.