Add support for static DNS servers when using the DHCP client

Author: pmuller

README.md

@@ -107,6 +107,15 @@ Normal interface - dhcp:
       ethtool_opts  => 'autoneg off speed 100 duplex full',
     }
 
+Normal interface - dhcp with custom DNS servers (peerdns must be true):
+
+    network::if::dynamic { 'eth0':
+      ensure  => 'up',
+      peerdns => true,
+      dns1    => '8.8.8.8',
+      dns2    => '8.8.4.4',
+    }
+
 Normal interface - bootp (minimal):
 
     network::if::dynamic { 'eth2':

manifests/if/dynamic.pp

@@ -13,6 +13,8 @@
 #   $dhcp_hostname   - optional
 #   $ethtool_opts    - optional
 #   $peerdns         - optional
+#   $dns1            - optional - only used when peerdns is true
+#   $dns2            - optional - only used when peerdns is true
 #   $linkdelay       - optional
 #   $check_link_down - optional
 #   $zone            - optional
@@ -55,6 +57,8 @@
   $dhcp_hostname   = undef,
   $ethtool_opts    = undef,
   $peerdns         = false,
+  $dns1            = undef,
+  $dns2            = undef,
   $linkdelay       = undef,
   $check_link_down = false,
   $defroute        = undef,
@@ -78,6 +82,10 @@
   validate_bool($peerdns)
   validate_bool($manage_hwaddr)
 
+  if !$peerdns and ($dns1 or $dns2) {
+    fail('$peerdns must be true when $dns1 or $dns2 are specified')
+  }
+
   network_if_base { $title:
     ensure          => $ensure,
     ipaddress       => '',
@@ -91,6 +99,8 @@
     dhcp_hostname   => $dhcp_hostname,
     ethtool_opts    => $ethtool_opts,
     peerdns         => $peerdns,
+    dns1            => $dns1,
+    dns2            => $dns2,
     linkdelay       => $linkdelay,
     check_link_down => $check_link_down,
     defroute        => $defroute,

spec/defines/network_if_dynamic_spec.rb

@@ -164,5 +164,38 @@
     it { should contain_service('network') }
   end
 
+  context 'optional parameters - static dns' do
+    let(:title) { 'eth0' }
+    let :params do {
+      :ensure          => 'up',
+      :peerdns         => true,
+      :dns1            => '8.8.8.8',
+      :dns2            => '8.8.4.4',
+      :macaddress_eth0 => 'bb:cc:bb:cc:bb:cc'
+    }
+    end
+    let :facts do {
+      :osfamily => 'RedHat'
+    }
+    end
+    it { should contain_file('ifcfg-eth0').with(
+      :ensure => 'present',
+      :mode   => '0644',
+      :owner  => 'root',
+      :group  => 'root',
+      :path   => '/etc/sysconfig/network-scripts/ifcfg-eth0',
+      :notify => 'Service[network]'
+    )}
+    it 'should contain File[ifcfg-eth0] with required contents' do
+      verify_contents(catalogue, 'ifcfg-eth0', [
+        'DEVICE=eth0',
+        'PEERDNS=yes',
+        'DNS1=8.8.8.8',
+        'DNS2=8.8.4.4',
+        'HWADDR=bb:cc:bb:cc:bb:cc'
+      ])
+    end
+    it { should contain_service('network') }
+  end
 
 end