Openvim controller dhcp server over a ovs vxlan mesh

[osm/openvim.git] / scripts / configure-dhcp-server-UBUNTU16.0.4.sh

diff --git a/scripts/configure-dhcp-server-UBUNTU16.0.4.sh b/scripts/configure-dhcp-server-UBUNTU16.0.4.sh
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+++ b/scripts/configure-dhcp-server-UBUNTU16.0.4.sh
@@ -0,0 +1,148 @@
+#!/bin/bash
+##
+# This file is part of openvim
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact with: nfvlabs@tid.es
+#
+# Authors: Leonardo Mirabal
+# February 2017
+
+
+
+function _usage(){
+    echo -e "Usage: sudo $0  <user-name>  "
+    echo -e "  Configure dhcp server for VIM usage. (version 1.0). Params:"
+    echo -e "     <user-name> Create if not exist and configure this user for openvim to connect"
+    echo -e "     -h --help    this help"
+    exit 1
+}
+
+function _install_packages_dependencies()
+{
+    # Required packages by openvim
+    apt-get -y update
+    apt-get -y install   ethtool build-essential dnsmasq openvswitch-switch
+    echo "Remove unneeded packages....."
+    apt-get -y autoremove
+}
+
+function _add_user_to_visudo()
+{
+# Allow admin users to access without password
+if ! grep -q "#openmano" /etc/sudoers
+then
+    cat >> /home/${option_user}/script_visudo.sh << EOL
+#!/bin/bash
+echo "#openmano allow to group admin to grant root privileges without password" >> \$1
+echo "${option_user} ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+EOL
+    chmod +x /home/${option_user}/script_visudo.sh
+    echo "allowing admin user to get root privileges withut password"
+    export EDITOR=/home/${option_user}/script_visudo.sh && sudo -E visudo
+    rm -f /home/${option_user}/script_visudo.sh
+fi
+
+}
+
+function _create_ovs_controller_config_path() {
+    mkdir -p '/var/lib/openvim'
+}
+
+function _install_user() {
+    # create user given by the user and add to groups need it.
+    # Add required groups
+    groupadd -f admin
+
+    # Adds user, default password same as name
+    if grep -q "^${option_user}:" /etc/passwd
+    then
+        #user exist, add to group
+        echo "adding user ${option_user} to group admin"
+        usermod -a -G admin -g admin ${option_user}
+    else
+        #create user if it does not exist
+        [ -z "$FORCE" ] && read -p "user '${option_user}' does not exist, create (Y/n)" kk
+        if ! [ -z "$kk" -o "$kk"="y" -o "$kk"="Y" ]
+        then
+            exit
+        fi
+        echo "creating and configuring user ${option_user}"
+        useradd -m -G admin -g admin ${option_user}
+        #Password
+        if [ -z "$FORCE" ]
+            then
+                echo "Provide a password for ${option_user}"
+                passwd ${option_user}
+            else
+                echo -e "$option_user\n$option_user" | passwd --stdin ${option_user}
+        fi
+    fi
+
+}
+
+
+
+
+#1.2 input parameters
+FORCE=""
+while getopts "h" o; do
+    case "${o}" in
+        h)
+            _usage
+            exit -1
+            ;;
+    esac
+done
+shift $((OPTIND-1))
+
+
+
+if [ $# -lt 1 ]
+then
+  usage
+  exit
+fi
+
+[ -z "$1" ] && echo -e "ERROR: User argument is mandatory, --user=<user>\n"  && _usage
+
+option_user=$1
+
+#check root privileges
+[ "${USER}" != "root" ] && echo "Needed root privileges" >&2 && exit 2
+
+
+echo '
+#################################################################
+#####       INSTALL USER                                    #####
+#################################################################'
+
+_install_user
+_add_user_to_visudo
+
+echo '
+#################################################################
+#####       INSTALL NEEDED PACKETS                          #####
+#################################################################'
+_install_packages_dependencies
+
+_create_ovs_controller_config_path
+
+echo
+echo "Do not forget to copy the public ssh key into /home/${option_user}/.ssh/authorized_keys for authomatic login from openvim controller"
+echo
+
+echo "Reboot the system to make the changes effective"