feat!: for a single master node do not use etcd and add option to not use kube-vip

Signed-off-by: Devin Buhl <devin@buhl.casa>

bootstrap/templates/addons/kube-prometheus-stack/app/helmvalues.yaml.j2

@@ -61,7 +61,7 @@ data:
             regex: (apiserver_response_sizes_bucket|apiserver_watch_events_sizes_bucket)
     kubeControllerManager:
       enabled: true
-      endpoints:
+      endpoints: &endpoints
       {% for item in bootstrap_nodes.master %}
         - {{ item.address }}
       {% endfor %}
@@ -72,17 +72,15 @@ data:
             sourceLabels: ["__name__"]
             regex: "(apiserver_audit|apiserver_client|apiserver_delegated|apiserver_envelope|apiserver_storage|apiserver_webhooks|attachdetach_controller|authenticated_user|authentication|cronjob_controller|disabled_metric|endpoint_slice|ephemeral_volume|garbagecollector_controller|get_token|go|hidden_metric|job_controller|kubernetes_build|kubernetes_feature|leader_election|node_collector|node_ipam|process_cpu|process_max|process_open|process_resident|process_start|process_virtual|pv_collector|registered_metric|replicaset_controller|rest_client|retroactive_storageclass|root_ca|running_managed|scrape_duration|scrape_samples|scrape_series|service_controller|storage_count|storage_operation|ttl_after|volume_operation|workqueue)_(.+)"
     kubeEtcd:
+      {% if bootstrap_nodes.master | length > 1 %}
       enabled: true
-      endpoints:
-      {% for item in bootstrap_nodes.master %}
-        - {{ item.address }}
-      {% endfor %}
+      {% else %}
+      enabled: false
+      {% endif %}
+      endpoints: *endpoints
     kubeScheduler:
       enabled: true
-      endpoints:
-      {% for item in bootstrap_nodes.master %}
-        - {{ item.address }}
-      {% endfor %}
+      endpoints: *endpoints
       serviceMonitor:
         metricRelabelings:
           # Remove duplicate labels provided by k3s

bootstrap/templates/ansible/inventory/group_vars/kubernetes/main.yaml.j2

@@ -9,13 +9,18 @@
 k3s_release_version: "v1.29.0+k3s1"
 k3s_install_hard_links: true
 k3s_become: true
+{% if bootstrap_nodes.master | length > 1 %}
 k3s_etcd_datastore: true
-k3s_use_unsupported_config: true
+{% else %}
+k3s_etcd_datastore: false
+{% endif %}
 k3s_registration_address: "{% raw %}{{ kube_vip_addr }}{% endraw %}"
 k3s_server_manifests_urls:
+  {% if bootstrap_kube_vip_enabled | default(true) %}
   # Kube-vip RBAC
   - url: https://raw.githubusercontent.com/kube-vip/kube-vip/main/docs/manifests/rbac.yaml
     filename: kube-vip-rbac.yaml
+  {% endif %}
   # Essential Prometheus Operator CRDs (the rest are installed with the kube-prometheus-stack helm release)
   - url: https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/v0.70.0/example/prometheus-operator-crd/monitoring.coreos.com_podmonitors.yaml
     filename: custom-prometheus-podmonitors.yaml
@@ -32,6 +37,8 @@ k3s_server_manifests_templates:
   - custom-cilium-l2.yaml.j2
   {% endif %}
   - custom-coredns-helmchart.yaml.j2
+{% if bootstrap_kube_vip_enabled | default(true) %}
 # /var/lib/rancher/k3s/agent/pod-manifests
 k3s_server_pod_manifests_templates:
   - kube-vip-static-pod.yaml.j2
+{% endif %}