feat: moderate the k8s install

- only install a base config
- wait for 3 masters before deploying helm charts
- remove cluster-domain
- manage nginx ingres via rke2 helmconfig
- fix container version for ceph
- fix oidc mount

modules/rke2/lib/facter/k8s_masters.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require 'json'
+require 'open3'
+
+Facter.add(:k8s_masters) do
+  confine do
+    File.exist?('/etc/rancher/rke2/rke2.yaml') &&
+      File.executable?('/usr/bin/kubectl')
+  end
+
+  setcode do
+    env = { 'KUBECONFIG' => '/etc/rancher/rke2/rke2.yaml' }
+    cmd = ['/usr/bin/kubectl', 'get', 'nodes', '-o', 'json']
+
+    stdout, stderr, status = Open3.capture3(env, *cmd)
+
+    if status.success?
+      json = JSON.parse(stdout)
+
+      master_count = json['items'].count do |item|
+        roles = item.dig('metadata', 'labels') || {}
+
+        # Look for well-known labels assigned to control-plane nodes
+        roles.any? do |key, _|
+          key =~ %r{node-role\.kubernetes\.io/(control-plane|master|etcd)}
+        end
+      end
+
+      master_count
+    else
+      Facter.debug("kubectl error: #{stderr}")
+      0
+    end
+  rescue StandardError => e
+    Facter.debug("Exception in k8s_masters fact: #{e.message}")
+    0
+  end
+end