creating exports from resource

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

CHANGELOG.md

@@ -34,6 +34,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - New "localtime" overlay to define the system time zone. #1303
 - Add support for nested profiles. #1572, #1598
 - Adds `wwctl container <exec|shell> --build=false` to prevent automatically (re)building the container. #1490, #1489
+- Added resource as global variable for templates
 
 ### Changed
 

internal/pkg/overlay/funcmap.go

@@ -46,7 +46,8 @@ func templateFileBlock(inc string, abortStr string) (string, error) {
 	wwlog.Debug("Including file block into template: %s", inc)
 	readFile, err := os.Open(inc)
 	if err != nil {
-		return "", err
+		wwlog.Info("couldn't read block %s: %s", inc, err)
+		return abortStr, nil
 	}
 	defer readFile.Close()
 	var cont string

overlays/host/internal/host_test.go

@@ -58,7 +58,7 @@ func Test_hostOverlay(t *testing.T) {
 			conf:   "",
 			args:   []string{"--render", "host", "host", "etc/exports.ww"},
 			log:    host_exports,
-			header: "",
+			header: "# Do not edit after this line",
 		},
 		{
 			name:   "host:/etc/hosts",
@@ -278,11 +278,10 @@ dhcp-host=e6:92:39:49:7b:04,set:warewulf,node2,192.168.3.23,infinite
 const host_exports string = `backupFile: true
 writeFile: true
 Filename: etc/exports
-
-# This file is autogenerated by warewulf
+# Do not edit after this line
+# This block is autogenerated by warewulf
+# Resource: NFSHOME
 /home 192.168.0.0/255.255.255.0(rw,sync)
-/opt 192.168.0.0/255.255.255.0(ro,sync,no_root_squash)
-
 `
 
 const host_hosts string = `backupFile: true

overlays/host/internal/nodes.conf

@@ -15,3 +15,10 @@ nodes:
         device: wwnet0
         hwaddr: e6:92:39:49:7b:04
         ipaddr: 192.168.3.23
+resource:
+  NFSHOME:
+    mountpoint: /home
+    moptions: defaults
+    eoptions: rw,sync
+    epath: /home
+    server: controller

overlays/host/rootfs/etc/exports.ww

@@ -1,11 +1,11 @@
-{{- if .Nfs.Enabled }}
-# This file is autogenerated by warewulf
+{{ IncludeBlock "/etc/exports" "# Do not edit after this line" }}
+# This block is autogenerated by warewulf
+{{- $Resource := .Resource }}
 {{- $network := .Network }}
 {{- $netmask := .Netmask }}
-{{- range .Nfs.ExportsExtended }}
-{{ .Path }} {{ $network }}/{{ $netmask }}({{ .ExportOptions }})
-{{- end }}
-{{- else }}
-{{ abort }}
-{{- end }}
-
+{{- range $ResName,$Res := .Resource }}
+{{- if eq (substr 0 3 $ResName) "NFS" }}{{ if eq $Res.server "controller" }}
+# Resource: {{ $ResName }}
+{{ $Res.epath}} {{ $network }}/{{ $netmask }}({{ $Res.eoptions }})
+{{- end }}{{ end }}
+{{- end }}