feat: adding rke2 (#394)

- manage rke2 repos
- add rke2 module (init, params, install, config, service)
- split roles::infra::k8s::node -> control/compute roles
- moved common k8s config into k8s.yaml
- add bootstrap_node, manage server and token fields in rke2 config
- manage install of helm
- manage node attributes (from puppet facts)
- manage frr exclusions for service/cluster network

Reviewed-on: #394

modules/frrouting/manifests/init.pp

@@ -16,8 +16,16 @@ class frrouting (
   Array[String] $mpls_ldp_interfaces         = [],
   Boolean $ospf_preferred_source_enable      = false,
   Optional[Stdlib::IP::Address] $ospf_preferred_source = undef,
+  Boolean $ospf_exclude_k8s_enable           = false,
+  Optional[Stdlib::IP::Address::V4::CIDR] $k8s_cluster_cidr = undef, # pod/cluster CIDR (e.g. 10.42.0.0/16)
+  Optional[Stdlib::IP::Address::V4::CIDR] $k8s_service_cidr = undef, # service CIDR (e.g. 10.43.0.0/16)
 ) {
 
+    # sanity check
+  if $ospf_exclude_k8s_enable and $k8s_cluster_cidr == undef and $k8s_service_cidr == undef {
+    warning('frrouting: ospf_exclude_k8s_enable is true but no k8s_*_cidr provided; nothing will be filtered.')
+  }
+
   $daemons_defaults = {
     'bgpd'    => false,
     'ospfd'   => true,

modules/frrouting/templates/frr.conf.erb

@@ -2,6 +2,7 @@
 frr defaults traditional
 hostname <%= @hostname %>
 no ipv6 forwarding
+
 <% @ospfd_interfaces.each do |iface, params| -%>
 interface <%= iface %>
 <% if params['area'] -%>
@@ -12,12 +13,31 @@ interface <%= iface %>
 <% end -%>
 exit
 <% end -%>
+
+<%# ---- K8s exclude (prefix-list + route-map) ---- -%>
+<% if @ospf_exclude_k8s_enable && (@k8s_cluster_cidr || @k8s_service_cidr) -%>
+! Do not redistribute Kubernetes Pod/Service CIDRs
+ip prefix-list K8S-BLOCK seq 5 permit <%= @k8s_cluster_cidr %> le 32<% if !@k8s_cluster_cidr %>  ! (unset)<% end %>
+<% if @k8s_service_cidr -%>
+ip prefix-list K8S-BLOCK seq 10 permit <%= @k8s_service_cidr %> le 32
+<% end -%>
+route-map CONNECTED-NON-K8S deny 5
+ match ip address prefix-list K8S-BLOCK
+exit
+route-map CONNECTED-NON-K8S permit 100
+exit
+<% end -%>
+
 router ospf
  ospf router-id <%= @ospfd_router_id %>
  log-adjacency-changes detail
 <% @ospfd_redistribute.each do |type| -%>
+<% if @ospf_exclude_k8s_enable && type == 'connected' && (@k8s_cluster_cidr || @k8s_service_cidr) -%>
+ redistribute connected route-map CONNECTED-NON-K8S
+<% else -%>
  redistribute <%= type %>
 <% end -%>
+<% end -%>
 <% @ospfd_networks.each do |network| -%>
  network <%= network %>
 <% end -%>
@@ -31,6 +51,8 @@ router ospf
  mpls-te inter-as area 0.0.0.0
 <% end -%>
 exit
+
+<%# ---- MPLS/LDP config ---- -%>
 <% if @mpls_ldp_router_id and @mpls_ldp_transport_addr and @mpls_ldp_interfaces.any? -%>
 mpls ldp
  router-id <%= @mpls_ldp_router_id %>
@@ -43,6 +65,8 @@ mpls ldp
  exit-address-family
 exit
 <% end -%>
+
+<%# ---- Preferred OSPF source ---- -%>
 <% if @ospf_preferred_source_enable && @ospf_preferred_source -%>
 ip prefix-list ANY seq 5 permit 0.0.0.0/0 le 32
 route-map OSPF-SRC permit 10