Install and Configure Salt Minion on Debian-based System

install-salt-minion.sh

#!/bin/bash

set -o nounset                        # unset variables are errors

SCRIPTVERSION="2019.01.25-Debian"
SCRIPTNAME="install-salt-minion.sh"
SCRIPTFULLNAME="$0"
SALTMASTER='192.168.56.101'  #IP of Salt-master

echoerror() { printf "\033[1;31m * ERROR\033[0m: %s\\n" "$@" 1>&2; }

usage() {
  cat << EOT
    Usage :  ${SCRIPTNAME} [options] 

    Options:
      -h  Display this message
      -v  Display script version
      -m  IP address server in salt-master role.  Default is 192.168.56.101.
EOT
}   # ----------  end of function usage  ----------

while getopts ':hvm:' opt
do
  case "${opt}" in

    h )  usage; exit 0                                ;;
    v )  echo "$0 -- Version $SCRIPTVERSION"; exit 0  ;;    
    m )  SALTMASTER=$OPTARG                                 ;;

    \?)  echo
          echoerror "Option does not exist : $OPTARG"
          usage
          exit 1
        ;;

  esac    # --- end of case ---
done
shift $((OPTIND-1))

if [ -f /etc/salt/minion ]; then
  echo "Salt (minion) is already installed on $HOSTNAME."
else  
  echo "************************ SALT-MINION INSTALL **************************"
  echo "Installing SALT-MINION"
  echo "You may be prompted for root credentials to complete the install."
  echo "******************************************************************" 
  
  sudo bash -c "add-apt-repository universe && apt update -y && apt upgrade -y" 
  sudo bash -c "apt install salt-minion -y" 
  
  sudo bash -c "echo -e 'master: $SALTMASTER' >> /etc/salt/minion"  
  sudo bash -c "echo '$SALTMASTER salt' >> /etc/hosts"
  
  sudo bash -c "systemctl enable salt-minion.service && service salt-minion restart"  
  
  echo "$SCRIPTFULLNAME ($SCRIPTVERSION) complete."
fi