Add support for NetworkManager

Introduce the new NM_NETWORKING image property that will force the
creation of Network Manager configuration files if defined

docs/interface.rst

@@ -228,6 +228,12 @@ All image formats properties
    you want to write a custom configuration task check
    :ref:`Configuration Tasks Environment<configuration-tasks-environment>`.
 
+ * **NM_NETWORKING=bool**
+   If this property is defined with a yes value, the *ConfigureNetwork* task
+   will try to configure the Ganeti-provided NICs by creating Network Manager
+   configuration files, instead of using the distro-specific network
+   configuration mechanism (*ifupdown* for Debian, *ifcfg* for Red Hat, etc.).
+
  * **EXCLUDE_ALL_TASKS=bool**
    If this property is defined with a yes value, the image will not be
    configured at all, during the deployment. This is really handy because it

snf-image-helper/common.sh.in

@@ -294,13 +294,17 @@ get_networking_tool() {
     local root_dir distro tool
     root_dir=$1
 
-    distro=$(get_base_distro "$root_dir")
-    if [ "$distro" = debian ]; then
-        tool=ifupdown
-    elif [ "$distro" = redhat ]; then
-        tool=ifcfg
+    if check_yes_no SNF_IMAGE_PROPERTY_NM_NETWORKING; then
+        tool="nm"
     else
-        tool=$distro
+        distro=$(get_base_distro "$root_dir")
+        if [ "$distro" = debian ]; then
+            tool=ifupdown
+        elif [ "$distro" = redhat ]; then
+            tool=ifcfg
+        else
+            tool=$distro
+        fi
     fi
 
     echo "@networkingdir@/$tool.sh"

snf-image-helper/networking/Makefile.am

 networkingdir=$(libdir)/$(PACKAGE)/networking
 
-dist_networking_SCRIPTS = ifupdown.sh ifcfg.sh freebsd.sh openbsd.sh netbsd.sh
+dist_networking_SCRIPTS = ifupdown.sh ifcfg.sh freebsd.sh openbsd.sh netbsd.sh nm.sh
 
 edit = sed \
            -e 's|@sysconfdir[@]|$(sysconfdir)|g' \

snf-image-helper/networking/nm.sh.in

+#! /bin/bash
+
+# Copyright (C) 2016 GRNET S.A.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+# Script for configuring network manager connections
+
+set -e
+. "@commondir@/common.sh"
+
+networking_opts "$@"
+
+SYSTEM_CONNECTIONS="$SNF_IMAGE_TARGET/etc/NetworkManager/system-connections/"
+
+if [ "$initialize" = yes ]; then
+    exit 0
+fi
+
+if [ "$finalize" = yes ]; then
+    exit 0
+fi
+
+if [ "$ipv4" = "none" ]; then
+    ipv4_section+="method=disabled"
+elif [ "$ipv4" = "dhcp" ]; then
+    ipv4_section+="method=auto"
+else
+    ipv4_section+="method=manual
+address1=$IP/${SUBNET##*/}"
+
+    if [ -n "$GATEWAY" ]; then
+        ipv4_section+=",$GATEWAY"
+    fi
+fi
+
+if [ "$ipv6" != 'none' ]; then
+    ipv6_section="method=auto"
+else
+    ipv6_section="method=disabled"
+fi
+
+connection="$SYSTEM_CONNECTIONS/Wired connection $index"
+cat > "$connection" <<EOF
+[connection]
+id=Wired connection $index
+uuid=$(cat /proc/sys/kernel/random/uuid)
+type=ethernet
+autoconnect=true
+
+[ethernet]
+mac-address=$MAC
+mac-address-blacklist=
+
+[ipv4]
+dns-search=
+$ipv4_section
+
+[ipv6]
+addr-gen-mode=eui64
+dns-search=
+ip6-privacy=0
+$ipv6_section
+EOF
+
+# For security, the 'keyfile' plugin that will read the connection files found
+# under /etc/NetworkManager/system-connections will ignore files that are
+# readable or writeable by any user or group other than 'root' since private
+# keys and passphrases may be stored in plaintext inside the file.
+chown 0:0 "$connection"
+chmod 600 "$connection"
+
+# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :