src/lxc/lxc-create.in

   1 #!/bin/bash
   2
   3 #
   4 # lxc: linux Container library
   5
   6 # Authors:
   7 # Daniel Lezcano <daniel.lezcano@free.fr>
   8
   9 # This library is free software; you can redistribute it and/or
  10 # modify it under the terms of the GNU Lesser General Public
  11 # License as published by the Free Software Foundation; either
  12 # version 2.1 of the License, or (at your option) any later version.
  13
  14 # This library is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 # Lesser General Public License for more details.
  18
  19 # You should have received a copy of the GNU Lesser General Public
  20 # License along with this library; if not, write to the Free Software
  21 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22
  23 #
  24 # This script allows to set or remove the capabilities on the lxc tools.
  25 # When the capabilities are set, a non root user can manage the containers.
  26 #
  27
  28 usage() {
  29     echo "usage: lxc-create -n <name> [-f configuration] [-t template] [-h]"
  30 }
  31
  32 help() {
  33     usage
  34     echo
  35     echo "creates a lxc system object."
  36     echo
  37     echo "Options:"
  38     echo "name         : name of the container"
  39     echo "configuration: lxc configuration"
  40     echo "template     : lxc-template is an accessible template script"
  41 }
  42
  43 shortoptions='hn:f:t:'
  44 longoptions='help,name:,config:,template:'
  45 lxc_path=@LXCPATH@
  46
  47 getopt=$(getopt -o $shortoptions --longoptions  $longoptions -- "$@")
  48 if [ $? != 0 ]; then
  49     usage
  50     exit 1;
  51 fi
  52
  53 eval set -- "$getopt"
  54
  55 while true; do
  56         case "$1" in
  57             -h|--help)
  58                 help
  59                 exit 1
  60                 ;;
  61             -n|--name)
  62                 shift
  63                 lxc_name=$1
  64                 shift
  65                 ;;
  66             -f|--config)
  67                 shift
  68                 lxc_config=$1
  69                 shift
  70                 ;;
  71             -t|--template)
  72                 shift
  73                 lxc_template=$1
  74                 shift
  75                 ;;
  76             --)
  77                 shift
  78                 break;;
  79             *)
  80                 echo $1
  81                 usage
  82                 exit 1
  83                 ;;
  84         esac
  85 done
  86
  87 if [ -z "$lxc_name" ]; then
  88     echo "no container name specified"
  89     usage
  90     exit 1
  91 fi
  92
  93 if [ "$(id -u)" != "0" ]; then
  94    echo "This command has to be run as root"
  95    exit 1
  96 fi
  97
  98 if [ ! -r $lxc_path ]; then
  99     echo "no configuration path defined !"
 100     exit 1
 101 fi
 102
 103 if [ -d "$lxc_path/$lxc_name" ]; then
 104     echo "'$lxc_name' already exists"
 105     exit 1
 106 fi
 107
 108 trap "lxc-destroy -n $lxc_name; echo aborted; exit 1" SIGHUP SIGINT SIGTERM
 109
 110 mkdir -p $lxc_path/$lxc_name
 111
 112 if [ -z "$lxc_config" ]; then
 113     touch $lxc_path/$lxc_name/config
 114 else
 115     if [ ! -r "$lxc_config" ]; then
 116         echo "'$lxc_config' configuration file not found"
 117         exit 1
 118     fi
 119
 120     cp $lxc_config $lxc_path/$lxc_name/config
 121 fi
 122
 123 if [ ! -z $lxc_template ]; then
 124
 125     type lxc-$lxc_template
 126     if [ $? -ne 0 ]; then
 127         echo "unknown template '$lxc_template'"
 128         lxc-destroy -n $lxc_name
 129         exit 1
 130     fi
 131
 132     if [ -z "$lxc_config" ]; then
 133         echo
 134         echo "Warning:"
 135         echo "-------"
 136         echo "Usually the template option is called with a configuration"
 137         echo "file option too, mostly to configure the network."
 138         echo "eg. lxc-create -n foo -f lxc.conf -t debian"
 139         echo "The configuration file is often:"
 140         echo
 141         echo "lxc.network.type=macvlan"
 142         echo "lxc.network.link=eth0"
 143         echo "lxc.network.flags=up"
 144         echo
 145         echo "or alternatively:"
 146         echo
 147         echo "lxc.network.type=veth"
 148         echo "lxc.network.link=br0"
 149         echo "lxc.network.flags=up"
 150         echo
 151         echo "For more information look at lxc.conf (5)"
 152         echo
 153         echo "At this point, I assume you know what you do."
 154         echo "Press <enter> to continue ..."
 155         read dummy
 156     fi
 157
 158     lxc-$lxc_template --path=$lxc_path/$lxc_name --name=$lxc_name
 159     if [ $? -ne 0 ]; then
 160         echo "failed to execute template '$lxc_template'"
 161         lxc-destroy -n $lxc_name
 162         exit 1
 163     fi
 164
 165     echo "'$lxc_template' template installed"
 166 fi
 167
 168 echo "'$lxc_name' created"