scripts/configure-dhcp-server-UBUNTU16.0.4.sh

   1 #!/bin/bash
   2 ##
   3 # This file is part of openvim
   4 # All Rights Reserved.
   5 #
   6 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   7 # not use this file except in compliance with the License. You may obtain
   8 # a copy of the License at
   9 #
  10 #         http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing, software
  13 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  14 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  15 # License for the specific language governing permissions and limitations
  16 # under the License.
  17 #
  18 # For those usages not covered by the Apache License, Version 2.0 please
  19 # contact with: nfvlabs@tid.es
  20 #
  21 # Authors: Leonardo Mirabal
  22 # February 2017
  23
  24
  25
  26 function _usage(){
  27     echo -e "Usage: sudo $0  <user-name>  "
  28     echo -e "  Configure dhcp server for VIM usage. (version 1.0). Params:"
  29     echo -e "     <user-name> Create if not exist and configure this user for openvim to connect"
  30     echo -e "     -h --help    this help"
  31     exit 1
  32 }
  33
  34 function _install_packages_dependencies()
  35 {
  36     # Required packages by openvim
  37     apt-get -y update
  38     apt-get -y install   ethtool build-essential dnsmasq openvswitch-switch
  39     echo "Remove unneeded packages....."
  40     apt-get -y autoremove
  41 }
  42
  43 function _add_user_to_visudo()
  44 {
  45 # Allow admin users to access without password
  46 if ! grep -q "#openmano" /etc/sudoers
  47 then
  48     cat >> /home/${option_user}/script_visudo.sh << EOL
  49 #!/bin/bash
  50 echo "#openmano allow to group admin to grant root privileges without password" >> \$1
  51 echo "${option_user} ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
  52 EOL
  53     chmod +x /home/${option_user}/script_visudo.sh
  54     echo "allowing admin user to get root privileges withut password"
  55     export EDITOR=/home/${option_user}/script_visudo.sh && sudo -E visudo
  56     rm -f /home/${option_user}/script_visudo.sh
  57 fi
  58
  59 }
  60
  61 function _create_ovs_controller_config_path() {
  62     mkdir -p '/var/lib/openvim'
  63 }
  64
  65 function _install_user() {
  66     # create user given by the user and add to groups need it.
  67     # Add required groups
  68     groupadd -f admin
  69
  70     # Adds user, default password same as name
  71     if grep -q "^${option_user}:" /etc/passwd
  72     then
  73         #user exist, add to group
  74         echo "adding user ${option_user} to group admin"
  75         usermod -a -G admin -g admin ${option_user}
  76     else
  77         #create user if it does not exist
  78         [ -z "$FORCE" ] && read -p "user '${option_user}' does not exist, create (Y/n)" kk
  79         if ! [ -z "$kk" -o "$kk"="y" -o "$kk"="Y" ]
  80         then
  81             exit
  82         fi
  83         echo "creating and configuring user ${option_user}"
  84         useradd -m -G admin -g admin ${option_user}
  85         #Password
  86         if [ -z "$FORCE" ]
  87             then
  88                 echo "Provide a password for ${option_user}"
  89                 passwd ${option_user}
  90             else
  91                 echo -e "$option_user\n$option_user" | passwd --stdin ${option_user}
  92         fi
  93     fi
  94
  95 }
  96
  97
  98
  99
 100 #1.2 input parameters
 101 FORCE=""
 102 while getopts "h" o; do
 103     case "${o}" in
 104         h)
 105             _usage
 106             exit -1
 107             ;;
 108     esac
 109 done
 110 shift $((OPTIND-1))
 111
 112
 113
 114 if [ $# -lt 1 ]
 115 then
 116   usage
 117   exit
 118 fi
 119
 120 [ -z "$1" ] && echo -e "ERROR: User argument is mandatory, --user=<user>\n"  && _usage
 121
 122 option_user=$1
 123
 124 #check root privileges
 125 [ "${USER}" != "root" ] && echo "Needed root privileges" >&2 && exit 2
 126
 127
 128 echo '
 129 #################################################################
 130 #####       INSTALL USER                                    #####
 131 #################################################################'
 132
 133 _install_user
 134 _add_user_to_visudo
 135
 136 echo '
 137 #################################################################
 138 #####       INSTALL NEEDED PACKETS                          #####
 139 #################################################################'
 140 _install_packages_dependencies
 141
 142 _create_ovs_controller_config_path
 143
 144 echo
 145 echo "Do not forget to copy the public ssh key into /home/${option_user}/.ssh/authorized_keys for authomatic login from openvim controller"
 146 echo
 147
 148 echo "Reboot the system to make the changes effective"