feat(ansible): Deploy coredns with HelmChart instead of builtin method and other small QoL changes

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

ansible/inventory/group_vars/kubernetes/kubernetes.yml

@@ -8,7 +8,6 @@
 k3s_release_version: "v1.27.3+k3s1"
 k3s_install_hard_links: true
 k3s_become: true
-k3s_debug: false
 k3s_etcd_datastore: true
 k3s_use_unsupported_config: true
 k3s_registration_address: "{{ kubevip_address }}"
@@ -26,6 +25,7 @@ k3s_server_manifests_urls:
 # /var/lib/rancher/k3s/server/manifests
 k3s_server_manifests_templates:
   - custom-cilium-helmchart.yaml.j2
+  - custom-coredns-helmchart.yaml.j2
 # /var/lib/rancher/k3s/agent/pod-manifests
 k3s_server_pod_manifests_templates:
   - kube-vip-static-pod.yaml.j2

ansible/inventory/group_vars/kubernetes/os.yml

@@ -1,16 +0,0 @@
----
-
-# ssh_authorized_keys: []
-
-ubuntu:
-  packages:
-    - hdparm
-    - htop
-    - ipvsadm
-    - lm-sensors
-    - nano
-    - nfs-common
-    - nvme-cli
-    - socat
-    - python3-kubernetes
-    - python3-yaml

ansible/inventory/group_vars/master/kubernetes.yml

@@ -10,6 +10,7 @@ k3s_server:
   docker: false
   flannel-backend: "none"             # This needs to be in quotes
   disable:
+    - coredns                         # Disable coredns                 - replaced with Helm Chart
     - flannel                         # Disable flannel                 - replaced with Cilium
     - local-storage                   # Disable local-path-provisioner  - installed with Flux
     - metrics-server                  # Disable metrics-server          - installed with Flux
@@ -21,10 +22,10 @@ k3s_server:
   write-kubeconfig-mode: "644"
   cluster-cidr: "{{ cluster_cidr }}"
   service-cidr: "{{ service_cidr }}"
+  etcd-expose-metrics: true           # Required to monitor etcd with kube-prometheus-stack
   kube-controller-manager-arg:
     - "bind-address=0.0.0.0"          # Required to monitor kube-controller-manager with kube-prometheus-stack
   kube-scheduler-arg:
     - "bind-address=0.0.0.0"          # Required to monitor kube-scheduler with kube-prometheus-stack
-  etcd-expose-metrics: true           # Required to monitor etcd with kube-prometheus-stack
   kube-apiserver-arg:
     - "anonymous-auth=true"           # Required for HAProxy health-checks