cookbooks/networking/recipes/default.rb

   1 #
   2 # Cookbook:: networking
   3 # Recipe:: default
   4 #
   5 # Copyright:: 2010, OpenStreetMap Foundation.
   6 # Copyright:: 2009, Opscode, Inc.
   7 #
   8 # Licensed under the Apache License, Version 2.0 (the "License");
   9 # you may not use this file except in compliance with the License.
  10 # You may obtain a copy of the License at
  11 #
  12 #     https://www.apache.org/licenses/LICENSE-2.0
  13 #
  14 # Unless required by applicable law or agreed to in writing, software
  15 # distributed under the License is distributed on an "AS IS" BASIS,
  16 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17 # See the License for the specific language governing permissions and
  18 # limitations under the License.
  19 #
  20 # = Requires
  21 # * node[:networking][:nameservers]
  22
  23 require "ipaddr"
  24 require "yaml"
  25
  26 keys = data_bag_item("networking", "keys")
  27
  28 package "netplan.io"
  29
  30 netplan = {
  31   "network" => {
  32     "version" => 2,
  33     "renderer" => "networkd",
  34     "ethernets" => {},
  35     "bonds" => {},
  36     "vlans" => {}
  37   }
  38 }
  39
  40 node[:networking][:interfaces].each do |name, interface|
  41   if interface[:interface]
  42     if interface[:role] && (role = node[:networking][:roles][interface[:role]])
  43       if role[interface[:family]]
  44         node.default[:networking][:interfaces][name][:prefix] = role[interface[:family]][:prefix]
  45         node.default[:networking][:interfaces][name][:gateway] = role[interface[:family]][:gateway]
  46         node.default[:networking][:interfaces][name][:routes] = role[interface[:family]][:routes]
  47       end
  48
  49       node.default[:networking][:interfaces][name][:metric] = role[:metric]
  50       node.default[:networking][:interfaces][name][:zone] = role[:zone]
  51     end
  52
  53     if interface[:address]
  54       prefix = node[:networking][:interfaces][name][:prefix]
  55
  56       node.default[:networking][:interfaces][name][:netmask] = (~IPAddr.new(interface[:address]).mask(0)).mask(prefix)
  57       node.default[:networking][:interfaces][name][:network] = IPAddr.new(interface[:address]).mask(prefix)
  58     end
  59
  60     interface = node[:networking][:interfaces][name]
  61
  62     deviceplan = if interface[:interface] =~ /^(.*)\.(\d+)$/
  63                    netplan["network"]["vlans"][interface[:interface]] ||= {
  64                      "id" => Regexp.last_match(2).to_i,
  65                      "link" => Regexp.last_match(1),
  66                      "accept-ra" => false,
  67                      "addresses" => [],
  68                      "routes" => []
  69                    }
  70                  elsif interface[:interface] =~ /^bond\d+$/
  71                    netplan["network"]["bonds"][interface[:interface]] ||= {
  72                      "accept-ra" => false,
  73                      "addresses" => [],
  74                      "routes" => []
  75                    }
  76                  else
  77                    netplan["network"]["ethernets"][interface[:interface]] ||= {
  78                      "accept-ra" => false,
  79                      "addresses" => [],
  80                      "routes" => []
  81                    }
  82                  end
  83
  84     if interface[:address]
  85       deviceplan["addresses"].push("#{interface[:address]}/#{prefix}")
  86     end
  87
  88     if interface[:mtu]
  89       deviceplan["mtu"] = interface[:mtu]
  90     end
  91
  92     if interface[:bond]
  93       deviceplan["interfaces"] = interface[:bond][:slaves].to_a
  94
  95       deviceplan["parameters"] = {
  96         "mode" => interface[:bond][:mode] || "active-backup",
  97         "mii-monitor-interval" => interface[:bond][:miimon] || 100,
  98         "down-delay" => interface[:bond][:downdelay] || 200,
  99         "up-delay" => interface[:bond][:updelay] || 200
 100       }
 101
 102       deviceplan["parameters"]["primary"] = interface[:bond][:slaves].first if deviceplan["parameters"]["mode"] == "active-backup"
 103       deviceplan["parameters"]["transmit-hash-policy"] = interface[:bond][:xmithashpolicy] if interface[:bond][:xmithashpolicy]
 104       deviceplan["parameters"]["lacp-rate"] = interface[:bond][:lacprate] if interface[:bond][:lacprate]
 105     end
 106
 107     if interface[:gateway] && interface[:gateway] != interface[:address]
 108       if interface[:family] == "inet"
 109         default_route = "0.0.0.0/0"
 110       elsif interface[:family] == "inet6"
 111         default_route = "::/0"
 112       end
 113
 114       deviceplan["routes"].push(
 115         "to" => default_route,
 116         "via" => interface[:gateway],
 117         "metric" => interface[:metric],
 118         "on-link" => true
 119       )
 120
 121       # This ordering relies on systemd-networkd adding routes
 122       # in reverse order and will need moving before the previous
 123       # route once that is fixed:
 124       #
 125       # https://github.com/systemd/systemd/issues/5430
 126       # https://github.com/systemd/systemd/pull/10938
 127       if interface[:family] == "inet6" &&
 128          !interface[:network].include?(interface[:gateway]) &&
 129          !IPAddr.new("fe80::/64").include?(interface[:gateway])
 130         deviceplan["routes"].push(
 131           "to" => interface[:gateway],
 132           "scope" => "link"
 133         )
 134       end
 135     end
 136
 137     if interface[:routes]
 138       interface[:routes].each do |to, parameters|
 139         next if parameters[:via] == interface[:address]
 140
 141         route = {
 142           "to" => to
 143         }
 144
 145         route["type"] = parameters[:type] if parameters[:type]
 146         route["via"] = parameters[:via] if parameters[:via]
 147         route["metric"] = parameters[:metric] if parameters[:metric]
 148
 149         deviceplan["routes"].push(route)
 150       end
 151     end
 152   else
 153     node.rm(:networking, :interfaces, name)
 154   end
 155 end
 156
 157 netplan["network"]["bonds"].each_value do |bond|
 158   bond["interfaces"].each do |interface|
 159     netplan["network"]["ethernets"][interface] ||= { "accept-ra" => false, "optional" => true }
 160   end
 161 end
 162
 163 netplan["network"]["vlans"].each_value do |vlan|
 164   unless vlan["link"] =~ /^bond\d+$/
 165     netplan["network"]["ethernets"][vlan["link"]] ||= { "accept-ra" => false }
 166   end
 167 end
 168
 169 file "/etc/netplan/00-installer-config.yaml" do
 170   action :delete
 171 end
 172
 173 file "/etc/netplan/01-netcfg.yaml" do
 174   action :delete
 175 end
 176
 177 file "/etc/netplan/50-cloud-init.yaml" do
 178   action :delete
 179 end
 180
 181 file "/etc/netplan/99-chef.yaml" do
 182   owner "root"
 183   group "root"
 184   mode "644"
 185   content YAML.dump(netplan)
 186 end
 187
 188 package "cloud-init" do
 189   action :purge
 190 end
 191
 192 if node[:networking][:wireguard][:enabled]
 193   wireguard_id = persistent_token("networking", "wireguard")
 194
 195   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]}"
 196
 197   package "wireguard-tools" do
 198     compile_time true
 199     options "--no-install-recommends"
 200   end
 201
 202   directory "/var/lib/systemd/wireguard" do
 203     owner "root"
 204     group "systemd-network"
 205     mode "750"
 206     compile_time true
 207   end
 208
 209   file "/var/lib/systemd/wireguard/private.key" do
 210     action :create_if_missing
 211     owner "root"
 212     group "systemd-network"
 213     mode "640"
 214     content %x(wg genkey)
 215     compile_time true
 216   end
 217
 218   node.default[:networking][:wireguard][:public_key] = %x(wg pubkey < /var/lib/systemd/wireguard/private.key).chomp
 219
 220   file "/var/lib/systemd/wireguard/preshared.key" do
 221     action :create_if_missing
 222     owner "root"
 223     group "systemd-network"
 224     mode "640"
 225     content keys["wireguard"]
 226   end
 227
 228   if node[:roles].include?("gateway")
 229     search(:node, "roles:gateway") do |gateway|
 230       next if gateway.name == node.name
 231       next unless gateway[:networking][:wireguard] && gateway[:networking][:wireguard][:enabled]
 232
 233       allowed_ips = gateway.interfaces(:role => :internal).map do |interface|
 234         "#{interface[:network]}/#{interface[:prefix]}"
 235       end
 236
 237       node.default[:networking][:wireguard][:peers] << {
 238         :public_key => gateway[:networking][:wireguard][:public_key],
 239         :allowed_ips => allowed_ips,
 240         :endpoint => "#{gateway.name}:51820"
 241       }
 242     end
 243
 244     search(:node, "roles:prometheus") do |server|
 245       allowed_ips = server.interfaces(:role => :internal).map do |interface|
 246         "#{interface[:network]}/#{interface[:prefix]}"
 247       end
 248
 249       if server[:networking][:private_address]
 250         allowed_ips << "#{server[:networking][:private_address]}/32"
 251       end
 252
 253       node.default[:networking][:wireguard][:peers] << {
 254         :public_key => server[:networking][:wireguard][:public_key],
 255         :allowed_ips => allowed_ips,
 256         :endpoint => "#{server.name}:51820"
 257       }
 258     end
 259
 260     node.default[:networking][:wireguard][:peers] << {
 261       :public_key => "7Oj9ufNlgidyH/xDc+aHQKMjJPqTmD/ab13agMh6AxA=",
 262       :allowed_ips => "10.0.16.1/32",
 263       :endpoint => "gate.compton.nu:51820"
 264     }
 265
 266     # Grant home
 267     node.default[:networking][:wireguard][:peers] << {
 268       :public_key => "RofATnvlWxP3mt87+QKRXFE5MVxtoCcTsJ+yftZYEE4=",
 269       :allowed_ips => "10.89.122.1/32",
 270       :endpoint => "gate.firefishy.com:51820"
 271     }
 272
 273     # Grant roaming
 274     node.default[:networking][:wireguard][:peers] << {
 275       :public_key => "YbUkREE9TAmomqgL/4Fh2e5u2Hh7drN/2o5qg3ndRxg=",
 276       :allowed_ips => "10.89.123.1/32",
 277       :endpoint => "roaming.firefishy.com:51820"
 278     }
 279   elsif node[:roles].include?("shenron")
 280     search(:node, "roles:gateway") do |gateway|
 281       allowed_ips = gateway.interfaces(:role => :internal).map do |interface|
 282         "#{interface[:network]}/#{interface[:prefix]}"
 283       end
 284
 285       node.default[:networking][:wireguard][:peers] << {
 286         :public_key => gateway[:networking][:wireguard][:public_key],
 287         :allowed_ips => allowed_ips,
 288         :endpoint => "#{gateway.name}:51820"
 289       }
 290     end
 291   end
 292
 293   template "/etc/systemd/network/wireguard.netdev" do
 294     source "wireguard.netdev.erb"
 295     owner "root"
 296     group "systemd-network"
 297     mode "640"
 298   end
 299
 300   template "/etc/systemd/network/wireguard.network" do
 301     source "wireguard.network.erb"
 302     owner "root"
 303     group "root"
 304     mode "644"
 305   end
 306
 307   if node[:lsb][:release].to_f < 20.04
 308     execute "ip-link-delete-wg0" do
 309       action :nothing
 310       command "ip link delete wg0"
 311       subscribes :run, "template[/etc/systemd/network/wireguard.netdev]"
 312       only_if { ::File.exist?("/sys/class/net/wg0") }
 313     end
 314
 315     service "systemd-networkd" do
 316       action :nothing
 317       subscribes :restart, "template[/etc/systemd/network/wireguard.netdev]"
 318       subscribes :restart, "template[/etc/systemd/network/wireguard.network]"
 319       not_if { kitchen? }
 320     end
 321   else
 322     execute "networkctl-delete-wg0" do
 323       action :nothing
 324       command "networkctl delete wg0"
 325       subscribes :run, "template[/etc/systemd/network/wireguard.netdev]"
 326       only_if { ::File.exist?("/sys/class/net/wg0") }
 327     end
 328
 329     execute "networkctl-reload" do
 330       action :nothing
 331       command "networkctl reload"
 332       subscribes :run, "template[/etc/systemd/network/wireguard.netdev]"
 333       subscribes :run, "template[/etc/systemd/network/wireguard.network]"
 334       not_if { kitchen? }
 335     end
 336   end
 337 end
 338
 339 ohai "reload-hostname" do
 340   action :nothing
 341   plugin "hostname"
 342 end
 343
 344 execute "hostnamectl-set-hostname" do
 345   command "hostnamectl set-hostname #{node[:networking][:hostname]}"
 346   notifies :reload, "ohai[reload-hostname]"
 347   not_if { kitchen? || node[:hostnamectl][:static_hostname] == node[:networking][:hostname] }
 348 end
 349
 350 template "/etc/hosts" do
 351   source "hosts.erb"
 352   owner "root"
 353   group "root"
 354   mode "644"
 355   not_if { kitchen? }
 356 end
 357
 358 service "systemd-resolved" do
 359   action [:enable, :start]
 360 end
 361
 362 directory "/etc/systemd/resolved.conf.d" do
 363   owner "root"
 364   group "root"
 365   mode "755"
 366 end
 367
 368 template "/etc/systemd/resolved.conf.d/99-chef.conf" do
 369   source "resolved.conf.erb"
 370   owner "root"
 371   group "root"
 372   mode "644"
 373   notifies :restart, "service[systemd-resolved]", :immediately
 374 end
 375
 376 if node[:filesystem][:by_mountpoint][:"/etc/resolv.conf"]
 377   execute "umount-resolve-conf" do
 378     command "umount -c /etc/resolv.conf"
 379   end
 380 end
 381
 382 link "/etc/resolv.conf" do
 383   to "../run/systemd/resolve/stub-resolv.conf"
 384 end
 385
 386 hosts = { "inet" => [], "inet6" => [] }
 387
 388 search(:node, "networking:interfaces").collect do |n|
 389   next if n[:fqdn] == node[:fqdn]
 390
 391   n.interfaces.each do |interface|
 392     next unless interface[:role] == "external"
 393
 394     hosts[interface[:family]] << interface[:address]
 395   end
 396 end
 397
 398 package "nftables"
 399
 400 interfaces = []
 401
 402 node.interfaces(:role => :external).each do |interface|
 403   interfaces << interface[:interface]
 404 end
 405
 406 template "/etc/nftables.conf" do
 407   source "nftables.conf.erb"
 408   owner "root"
 409   group "root"
 410   mode "755"
 411   variables :interfaces => interfaces, :hosts => hosts
 412   notifies :restart, "service[nftables]"
 413 end
 414
 415 stop_commands = [
 416   "-/usr/sbin/nft delete table inet filter",
 417   "-/usr/sbin/nft delete table inet chef-filter"
 418 ]
 419
 420 stop_commands << "-/usr/sbin/nft delete table ip nat" if node[:roles].include?("gateway")
 421 stop_commands << "-/usr/sbin/nft delete table ip chef-nat" if node[:roles].include?("gateway")
 422
 423 systemd_service "nftables-stop" do
 424   service "nftables"
 425   dropin "stop"
 426   exec_reload ""
 427   exec_stop stop_commands
 428 end
 429
 430 if node[:networking][:firewall][:enabled]
 431   service "nftables" do
 432     action [:enable, :start]
 433   end
 434 else
 435   service "nftables" do
 436     action [:disable, :stop]
 437   end
 438 end
 439
 440 if node[:networking][:wireguard][:enabled]
 441   wireguard_source = if node[:roles].include?("gateway")
 442                        "net"
 443                      else
 444                        "osm"
 445                      end
 446
 447   firewall_rule "accept-wireguard" do
 448     action :accept
 449     source wireguard_source
 450     dest "fw"
 451     proto "udp"
 452     dest_ports "51820"
 453     source_ports "51820"
 454   end
 455 end
 456
 457 firewall_rule "accept-http" do
 458   action :accept
 459   source "net"
 460   dest "fw"
 461   proto "tcp:syn"
 462   dest_ports "http"
 463   rate_limit node[:networking][:firewall][:http_rate_limit]
 464   connection_limit node[:networking][:firewall][:http_connection_limit]
 465 end
 466
 467 firewall_rule "accept-https" do
 468   action :accept
 469   source "net"
 470   dest "fw"
 471   proto "tcp:syn"
 472   dest_ports "https"
 473   rate_limit node[:networking][:firewall][:http_rate_limit]
 474   connection_limit node[:networking][:firewall][:http_connection_limit]
 475 end