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 bindir=@BINDIR@
  47
  48 getopt=$(getopt -o $shortoptions --longoptions  $longoptions -- "$@")
  49 if [ $? != 0 ]; then
  50     usage
  51     exit 1;
  52 fi
  53
  54 eval set -- "$getopt"
  55
  56 while true; do
  57         case "$1" in
  58             -h|--help)
  59                 help
  60                 exit 1
  61                 ;;
  62             -n|--name)
  63                 shift
  64                 lxc_name=$1
  65                 shift
  66                 ;;
  67             -f|--config)
  68                 shift
  69                 lxc_config=$1
  70                 shift
  71                 ;;
  72             -t|--template)
  73                 shift
  74                 lxc_template=$1
  75                 shift
  76                 ;;
  77             --)
  78                 shift
  79                 break;;
  80             *)
  81                 echo $1
  82                 usage
  83                 exit 1
  84                 ;;
  85         esac
  86 done
  87
  88 if [ -z "$lxc_path" ]; then
  89     echo "no configuration path defined !"
  90     exit 1
  91 fi
  92
  93 if [ ! -r $lxc_path ]; then
  94     echo "configuration path '$lxc_path' not found"
  95     exit 1
  96 fi
  97
  98 if [ -z "$lxc_name" ]; then
  99     echo "no container name specified"
 100     usage
 101     exit 1
 102 fi
 103
 104 if [ "$(id -u)" != "0" ]; then
 105    echo "This command has to be run as root"
 106    exit 1
 107 fi
 108
 109 if [ ! -r $lxc_path ]; then
 110     echo "no configuration path defined !"
 111     exit 1
 112 fi
 113
 114 if [ -d "$lxc_path/$lxc_name" ]; then
 115     echo "'$lxc_name' already exists"
 116     exit 1
 117 fi
 118
 119 trap "${bindir}/lxc-destroy -n $lxc_name; echo aborted; exit 1" SIGHUP SIGINT SIGTERM
 120
 121 mkdir -p $lxc_path/$lxc_name
 122
 123 if [ -z "$lxc_config" ]; then
 124     touch $lxc_path/$lxc_name/config
 125 else
 126     if [ ! -r "$lxc_config" ]; then
 127         echo "'$lxc_config' configuration file not found"
 128         exit 1
 129     fi
 130
 131     cp $lxc_config $lxc_path/$lxc_name/config
 132 fi
 133
 134 if [ ! -z $lxc_template ]; then
 135
 136     type ${bindir}/lxc-$lxc_template >/dev/null
 137     if [ $? -ne 0 ]; then
 138         echo "unknown template '$lxc_template'"
 139         ${bindir}/lxc-destroy -n $lxc_name
 140         exit 1
 141     fi
 142
 143     if [ -z "$lxc_config" ]; then
 144         echo
 145         echo "Warning:"
 146         echo "-------"
 147         echo "Usually the template option is called with a configuration"
 148         echo "file option too, mostly to configure the network."
 149         echo "eg. lxc-create -n foo -f lxc.conf -t debian"
 150         echo "The configuration file is often:"
 151         echo
 152         echo "lxc.network.type=macvlan"
 153         echo "lxc.network.link=eth0"
 154         echo "lxc.network.flags=up"
 155         echo
 156         echo "or alternatively:"
 157         echo
 158         echo "lxc.network.type=veth"
 159         echo "lxc.network.link=br0"
 160         echo "lxc.network.flags=up"
 161         echo
 162         echo "For more information look at lxc.conf (5)"
 163         echo
 164         echo "At this point, I assume you know what you do."
 165         echo "Press <enter> to continue ..."
 166         read dummy
 167     fi
 168
 169     ${bindir}/lxc-$lxc_template --path=$lxc_path/$lxc_name --name=$lxc_name
 170     if [ $? -ne 0 ]; then
 171         echo "failed to execute template '$lxc_template'"
 172         ${bindir}/lxc-destroy -n $lxc_name
 173         exit 1
 174     fi
 175
 176     echo "'$lxc_template' template installed"
 177 fi
 178
 179 echo "'$lxc_name' created"