feat: enable etcd monitoring for k0s (#1179)

* feat: enable etcd monitoring for k0s

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

* fix: always enable etcd on k3s

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

---------

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

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

@@ -9,11 +9,8 @@
 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
-#% else %#
-k3s_etcd_datastore: false
-#% endif %#
+k3s_use_unsupported_config: true
 k3s_registration_address: "{{ kube_api_addr }}"
 # /var/lib/rancher/k3s/server/manifests
 k3s_server_manifests_templates:

bootstrap/templates/kubernetes/apps/observability/kube-prometheus-stack/app/helmrelease.yaml.j2

@@ -103,11 +103,7 @@ spec:
             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)_(.+)"
       #% endif %#
     kubeEtcd:
-      #% if bootstrap_nodes.master | length > 1 %#
       enabled: true
-      #% else %#
-      enabled: false
-      #% endif %#
       endpoints: *endpoints
     kubeScheduler:
       enabled: true

bootstrap/templates/kubernetes/k0s/k0s-config.yaml.j2

@@ -67,6 +67,10 @@ spec:
           extraArgs:
             # Required to monitor kube-scheduler with kube-prometheus-stack
             bind-address: "0.0.0.0"
+        storage:
+          etcd:
+            extraArgs:
+              listen-metrics-urls: http://0.0.0.0:2381 # Required to monitor etcd with kube-prometheus-stack
         api:
           sans:
             - "#{ bootstrap_kube_api_addr }#"