static address lxc template

lxc-post_main.yml

---

# --------------------------------------------
#   Add static hostnames to local /etc/hosts
# --------------------------------------------

- name: Add container names to /etc/hosts
  lineinfile:
    dest: '/etc/hosts'
    regexp: '{{ item.name }}'
    line: '{{ item.template_options.split("--address=")[1].split()[0] }} {{ item.name }}'
  when: '"hosts_entry" in item.keys()'
  with_items: lxc_containers

lxc-template.patch

diff --git a/usr/share/lxc/templates/lxc-inofix.j2 b/usr/share/lxc/templates/lxc-inofix.j2
index 244363d..73c98a7 100755
--- a/usr/share/lxc/templates/lxc-inofix.j2
+++ b/usr/share/lxc/templates/lxc-inofix.j2
@@ -7,6 +7,7 @@
 # Authors:
 # Daniel Lezcano <daniel.lezcano@free.fr>
 # Maciej Delmanowski <drybjed@gmail.com>
+# Reto Gantenbein <reto.gantenbein@inofix.ch>
 
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -280,14 +281,29 @@ EOF
     mkdir -p $rootfs/selinux
     echo 0 > $rootfs/selinux/enforce
 
-    # configure the network using the dhcp
+    # configure the network
     cat <<EOF > $rootfs/etc/network/interfaces
 auto lo
 iface lo inet loopback
 
 auto eth0
-iface eth0 inet dhcp
 EOF
+    if [ -n "$address" ]; then
+        cat << EOF >> $rootfs/etc/network/interfaces
+iface eth0 inet static
+    address $address
+    netmask ${netmask:-255.255.255.0}
+    gateway ${gateway:-${address%.*}.1}
+EOF
+        save_ifs=$IFS
+        IFS=,
+        for addr in ${nameserver:-${address%.*}.1}; do
+            echo "    dns-nameservers ${addr}" >> $rootfs/etc/network/interfaces
+        done
+        IFS=$save_ifs
+    else
+        echo "iface eth0 inet dhcp" >> $rootfs/etc/network/interfaces
+    fi
 
     # set the hostname
     cat <<EOF > $rootfs/etc/hostname
@@ -569,13 +585,18 @@ usage()
 {
     cat <<EOF
 $1 -h|--help -p|--path=<path> [-a|--arch] [-r|--release=<release>] [-c|--clean]
+    [--address=<ip>] [--netmask=<nm>] [--gateway=<ip>] [--nameserver=<ip>[,<ip>]]
 release: the debian release (e.g. wheezy): defaults to host release
 arch: the container architecture (e.g. amd64): defaults to host arch
+address: ip address, enables static network configuration
+netmask: subnetmask for static network config: defaults to 255.255.255.0
+gateway: gateway for static network config: defaults to .1 of static network
+nameserver: dns server(s) for static network config: defaults to .1 of static network
 EOF
     return 0
 }
 
-options=$(getopt -o hp:n:a:r:c -l help,rootfs:,path:,name:,arch:,release:,clean -- "$@")
+options=$(getopt -o hp:n:a:r:c -l help,rootfs:,path:,name:,arch:,release:,clean,address:,netmask:,gateway:,nameserver: -- "$@")
 if [ $? -ne 0 ]; then
         usage $(basename $0)
         exit 1
@@ -606,6 +627,10 @@ do
         -r|--release)   release=$2; shift 2;;
         -n|--name)      name=$2; shift 2;;
         -c|--clean)     clean=$2; shift 1;;
+        --address)      address=$2; shift 2;;
+        --netmask)      netmask=$2; shift 2;;
+        --gateway)      gateway=$2; shift 2;;
+        --nameserver)   nameserver=$2; shift 2;;
         --)             shift 1; break ;;
         *)              break ;;
     esac