whyredfire
d55d711463
Traffic to the 192.168.2.5 external IP is DNATed to the Traefik pod before NetworkPolicy is evaluated, so the 10.0.0.0/8 exclusion blocked VPN clients from reaching services behind the gateway.
gitops
Argo CD manifests for a single-node k3s cluster.
Node configuration
These live on the node, not in this repo, so reapply them when rebuilding it.
k3s
The bundled Traefik is replaced by the Argo CD-managed one, which is exposed
via externalIPs rather than ServiceLB. Control-plane metrics endpoints are
exposed for Prometheus:
# /etc/rancher/k3s/config.yaml
disable:
- traefik
- servicelb
kube-controller-manager-arg:
- bind-address=0.0.0.0
kube-scheduler-arg:
- bind-address=0.0.0.0
kube-proxy-arg:
- metrics-bind-address=0.0.0.0
Image garbage collection
Kubelet only prunes images once the disk crosses 85%, so unused images pile up on a large disk. Also expire images that haven't been used in 7 days:
# /var/lib/rancher/k3s/agent/etc/kubelet.conf.d/50-image-gc.conf
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
imageMaximumGCAge: 168h
Apply with sudo systemctl restart k3s.