set MTU in different network confs

Signed-off-by: Christian Goll <cgoll@suse.com>

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New documentation for development environment (Vagrant)
 - Ability to duplicate an image with `wwctl container copy` or the API
 - New documentation for container duplication procedure
+- Configure network device MTU in nework configuration scripts. #807
 
 ### Fixed
 - Fix hard CPU architecture on proto's installation in the Makefile

overlays/wwinit/etc/NetworkManager/system-connections/ww4-managed.ww

@@ -20,12 +20,18 @@ autoconnect=true
 {{ if eq $netdev.Type "ethernet" -}}
 [ethernet]
 mac-address={{ $netdev.Hwaddr }}
+{{ if $netdev.MTU -}}
+mtu={{ $netdev.MTU }}
+{{ end -}}
 {{ end -}}
 {{ end -}}
 
 {{ if eq $netdev.Type "infiniband" -}}
 [infiniband]
 transport-mode=datagram
+{{ if $netdev.MTU -}}
+mtu={{ $netdev.MTU }}
+{{ end -}}
 {{ end -}}
 
 {{ if $netdev.IpCIDR -}}

overlays/wwinit/etc/network/interfaces.d/default.ww

@@ -1,7 +1,19 @@
-auto {{.NetDevs.default.Device}}
-allow-hotplug {{.NetDevs.default.Device}}
-iface {{.NetDevs.default.Device}} inet static
-  address {{.NetDevs.default.Ipaddr}}
-  netmask {{.NetDevs.default.Netmask}}
-  gateway {{.NetDevs.default.Gateway}}
-  up ifmetric {{.NetDevs.default.Device}} 30
+{{- $host := .BuildHost }}
+{{- $time := .BuildTime }}
+{{- $source := .BuildSource }}
+{{range $devname, $netdev := .NetDevs -}}
+{{- $filename := print $devname  }}
+{{- file $filename }}
+# This file is autogenerated by warewulf
+# Host:   {{ $host }}
+# Time:   {{ $time }}
+# Source: {{ $source }}
+auto {{$netdev.Device}}
+allow-hotplug {{$netdev.Device}}
+iface {{$netdev.Device}} inet static
+  address {{$netdev.Ipaddr}}
+  netmask {{$netdev.Netmask}}
+  gateway {{$netdev.Gateway}}
+  mtu {{$netdev.MTU}}
+  up ifmetric {{$netdev.Device}} 30
+{{- end}}

overlays/wwinit/etc/sysconfig/network-scripts/ifcfg.ww

@@ -11,6 +11,9 @@
 TYPE={{ $netdev.Type }}
 DEVICE={{ $netdev.Device }}
 NAME={{ $devname }}
+{{ if $netdev.MTU -}}
+MTU={{ $netdev.MTU }}
+{{ end -}}
 BOOTPROTO=static
 DEVTIMEOUT=10
 IPADDR={{ $netdev.Ipaddr }}

overlays/wwinit/etc/wicked/ifconfig/ifcfg.xml.ww

@@ -15,6 +15,9 @@ Source: {{ $source }}
   {{ if $netdev.Type -}}
   <link-type>{{ $netdev.Type }}</link-type>
   {{ end -}}
+  {{ if $netdev.MTU -}}
+  <mtu>{{ $netdev.MTU }}</mtu>
+  {{ end -}}
   <control>
     <mode>boot</mode>
   </control>