Fix configuration of wireguard keys on 18.04

[chef.git] / cookbooks / networking / recipes / default.rb

diff --git a/cookbooks/networking/recipes/default.rb b/cookbooks/networking/recipes/default.rb
index 20a696ceca4d7bf02d93e7b604d55b664a516175..34a1a52afba33d0e3e860cf3e6eb6ddcdc975000 100644 (file)
--- a/cookbooks/networking/recipes/default.rb
+++ b/cookbooks/networking/recipes/default.rb
@@ -23,6 +23,8 @@
 require "ipaddr"
 require "yaml"
 
+keys = data_bag_item("networking", "keys")
+
 package "netplan.io"
 
 netplan = {
@@ -130,48 +132,12 @@ node[:networking][:interfaces].each do |name, interface|
           "scope" => "link"
         )
       end
-
-      if interface[:role] == "internal" && interface[:gateway] != interface[:address]
-        search(:node, "networking_interfaces*address:#{interface[:gateway]}") do |gateway|
-          next unless gateway[:openvpn]
-
-          gateway[:openvpn][:tunnels].each_value do |tunnel|
-            if tunnel[:peer][:address]
-              deviceplan["routes"].push(
-                "to" => "#{tunnel[:peer][:address]}/32",
-                "via" => interface[:gateway]
-              )
-
-              route tunnel[:peer][:address] do
-                netmask "255.255.255.255"
-                gateway interface[:gateway]
-                device interface[:interface]
-              end
-            end
-
-            next unless tunnel[:peer][:networks]
-
-            tunnel[:peer][:networks].each do |network|
-              prefix = IPAddr.new("#{network[:address]}/#{network[:netmask]}").prefix
-
-              deviceplan["routes"].push(
-                "to" => "#{network[:address]}/#{prefix}",
-                "via" => interface[:gateway]
-              )
-
-              route network[:address] do
-                netmask network[:netmask]
-                gateway interface[:gateway]
-                device interface[:interface]
-              end
-            end
-          end
-        end
-      end
     end
 
     if interface[:routes]
       interface[:routes].each do |to, parameters|
+        next if parameters[:via] == interface[:address]
+
         route = {
           "to" => to
         }
@@ -219,6 +185,104 @@ package "cloud-init" do
   action :purge
 end
 
+if node[:networking][:wireguard][:enabled]
+  wireguard_id = persistent_token("networking", "wireguard")
+
+  node.default[:networking][:wireguard][:address] = "fd43:e709:ea6d:1:#{wireguard_id[0, 4]}:#{wireguard_id[4, 4]}:#{wireguard_id[8, 4]}:#{wireguard_id[12, 4]}"
+
+  package "wireguard-tools" do
+    compile_time true
+  end
+
+  directory "/var/lib/systemd/wireguard" do
+    owner "root"
+    group "systemd-network"
+    mode "750"
+    compile_time true
+  end
+
+  file "/var/lib/systemd/wireguard/private.key" do
+    action :create_if_missing
+    owner "root"
+    group "systemd-network"
+    mode "640"
+    content %x(wg genkey)
+    compile_time true
+  end
+
+  node.default[:networking][:wireguard][:public_key] = %x(wg pubkey < /var/lib/systemd/wireguard/private.key).chomp
+
+  file "/var/lib/systemd/wireguard/preshared.key" do
+    action :create_if_missing
+    owner "root"
+    group "systemd-network"
+    mode "640"
+    content keys["wireguard"]
+  end
+
+  if node[:roles].include?("gateway")
+    search(:node, "roles:gateway") do |gateway|
+      next if gateway.name == node.name
+      next unless gateway[:networking][:wireguard] && gateway[:networking][:wireguard][:enabled]
+
+      allowed_ips = gateway.interfaces(:role => :internal).map do |interface|
+        "#{interface[:network]}/#{interface[:prefix]}"
+      end
+
+      node.default[:networking][:wireguard][:peers] << {
+        :public_key => gateway[:networking][:wireguard][:public_key],
+        :allowed_ips => allowed_ips,
+        :endpoint => "#{gateway.name}:51820"
+      }
+    end
+  end
+
+  template "/etc/systemd/network/wireguard.netdev" do
+    source "wireguard.netdev.erb"
+    owner "root"
+    group "systemd-network"
+    mode "640"
+  end
+
+  template "/etc/systemd/network/wireguard.network" do
+    source "wireguard.network.erb"
+    owner "root"
+    group "root"
+    mode "644"
+  end
+
+  if node[:lsb][:release].to_f < 20.04
+    execute "ip-link-delete-wg0" do
+      action :nothing
+      command "ip link delete wg0"
+      subscribes :run, "template[/etc/systemd/network/wireguard.netdev]"
+      only_if { ::File.exist?("/sys/class/net/wg0") }
+    end
+
+    service "systemd-networkd" do
+      action :nothing
+      subscribes :restart, "template[/etc/systemd/network/wireguard.netdev]"
+      subscribes :restart, "template[/etc/systemd/network/wireguard.network]"
+      not_if { ENV.key?("TEST_KITCHEN") }
+    end
+  else
+    execute "networkctl-delete-wg0" do
+      action :nothing
+      command "networkctl delete wg0"
+      subscribes :run, "template[/etc/systemd/network/wireguard.netdev]"
+      only_if { ::File.exist?("/sys/class/net/wg0") }
+    end
+
+    execute "networkctl-reload" do
+      action :nothing
+      command "networkctl reload"
+      subscribes :run, "template[/etc/systemd/network/wireguard.netdev]"
+      subscribes :run, "template[/etc/systemd/network/wireguard.network]"
+      not_if { ENV.key?("TEST_KITCHEN") }
+    end
+  end
+end
+
 ohai "reload-hostname" do
   action :nothing
   plugin "hostname"
@@ -389,14 +453,14 @@ firewall_rule "limit-icmp-echo" do
   rate_limit "s:1/sec:5"
 end
 
-%w[ucl ams bm].each do |zone|
-  firewall_rule "accept-openvpn-#{zone}" do
+if node[:networking][:wireguard][:enabled]
+  firewall_rule "accept-wireguard" do
     action :accept
-    source zone
+    source "osm"
     dest "fw"
     proto "udp"
-    dest_ports "1194:1197"
-    source_ports "1194:1197"
+    dest_ports "51820"
+    source_ports "51820"
   end
 end